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_label05_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:40:57,538 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:40:57,540 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:40:57,559 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:40:57,560 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:40:57,561 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:40:57,562 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:40:57,565 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:40:57,568 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:40:57,570 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:40:57,572 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:40:57,573 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:40:57,574 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:40:57,575 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:40:57,578 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:40:57,579 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:40:57,580 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:40:57,583 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:40:57,588 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:40:57,592 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:40:57,593 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:40:57,596 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:40:57,599 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:40:57,602 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:40:57,602 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:40:57,603 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:40:57,604 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:40:57,607 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:40:57,610 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:40:57,613 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:40:57,613 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:40:57,615 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:40:57,615 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:40:57,615 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:40:57,616 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:40:57,617 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:40:57,617 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 16:40:57,648 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:40:57,649 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:40:57,650 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:40:57,650 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:40:57,650 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:40:57,650 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:40:57,650 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:40:57,651 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:40:57,651 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:40:57,651 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:40:57,651 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:40:57,651 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:40:57,652 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:40:57,653 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:40:57,653 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:40:57,654 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:40:57,654 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:40:57,654 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:40:57,654 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:40:57,654 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:40:57,654 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:40:57,656 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:40:57,657 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:40:57,657 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:40:57,657 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:40:57,657 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:40:57,658 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:40:57,658 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:40:57,658 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:40:57,658 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:40:57,658 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:40:57,658 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:40:57,659 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:40:57,659 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:40:57,659 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:40:57,727 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:40:57,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:40:57,748 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:40:57,749 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:40:57,750 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:40:57,750 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label05_false-unreach-call.c [2018-11-12 16:40:57,810 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61fc0538a/98f0671b8f214b4983b67aa053137359/FLAGfca8d6d3a [2018-11-12 16:40:58,490 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:40:58,493 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label05_false-unreach-call.c [2018-11-12 16:40:58,516 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61fc0538a/98f0671b8f214b4983b67aa053137359/FLAGfca8d6d3a [2018-11-12 16:40:58,533 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61fc0538a/98f0671b8f214b4983b67aa053137359 [2018-11-12 16:40:58,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:40:58,544 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:40:58,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:40:58,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:40:58,549 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:40:58,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:40:58" (1/1) ... [2018-11-12 16:40:58,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243c94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:58, skipping insertion in model container [2018-11-12 16:40:58,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:40:58" (1/1) ... [2018-11-12 16:40:58,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:40:58,667 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:40:59,578 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:40:59,583 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:40:59,852 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:40:59,873 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:40:59,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:59 WrapperNode [2018-11-12 16:40:59,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:40:59,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:40:59,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:40:59,875 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:41:00,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:59" (1/1) ... [2018-11-12 16:41:00,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:59" (1/1) ... [2018-11-12 16:41:00,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:41:00,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:41:00,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:41:00,056 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:41:00,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:59" (1/1) ... [2018-11-12 16:41:00,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:59" (1/1) ... [2018-11-12 16:41:00,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:59" (1/1) ... [2018-11-12 16:41:00,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:59" (1/1) ... [2018-11-12 16:41:00,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:59" (1/1) ... [2018-11-12 16:41:00,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:59" (1/1) ... [2018-11-12 16:41:00,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:59" (1/1) ... [2018-11-12 16:41:00,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:41:00,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:41:00,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:41:00,241 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:41:00,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:59" (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 16:41:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:41:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:41:00,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:41:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:41:00,312 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:41:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:41:00,313 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:41:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:41:00,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:41:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:41:00,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:41:06,754 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:41:06,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:41:06 BoogieIcfgContainer [2018-11-12 16:41:06,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:41:06,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:41:06,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:41:06,760 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:41:06,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:40:58" (1/3) ... [2018-11-12 16:41:06,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aaa36bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:41:06, skipping insertion in model container [2018-11-12 16:41:06,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:59" (2/3) ... [2018-11-12 16:41:06,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aaa36bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:41:06, skipping insertion in model container [2018-11-12 16:41:06,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:41:06" (3/3) ... [2018-11-12 16:41:06,764 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label05_false-unreach-call.c [2018-11-12 16:41:06,773 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:41:06,781 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:41:06,799 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:41:06,841 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:41:06,842 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:41:06,842 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:41:06,842 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:41:06,842 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:41:06,843 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:41:06,843 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:41:06,843 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:41:06,877 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 16:41:06,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-12 16:41:06,885 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:41:06,886 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] [2018-11-12 16:41:06,889 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:41:06,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:06,896 INFO L82 PathProgramCache]: Analyzing trace with hash -397266572, now seen corresponding path program 1 times [2018-11-12 16:41:06,898 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:41:06,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:06,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:41:06,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:06,946 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:41:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:41:07,366 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 16:41:07,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:41:07,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:41:07,369 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:41:07,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:41:07,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:41:07,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:41:07,390 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-12 16:41:10,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:41:10,902 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-12 16:41:10,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:41:10,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-11-12 16:41:10,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:41:10,930 INFO L225 Difference]: With dead ends: 1156 [2018-11-12 16:41:10,931 INFO L226 Difference]: Without dead ends: 744 [2018-11-12 16:41:10,941 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 16:41:10,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-12 16:41:11,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-12 16:41:11,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 16:41:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1317 transitions. [2018-11-12 16:41:11,061 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1317 transitions. Word has length 26 [2018-11-12 16:41:11,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:41:11,061 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1317 transitions. [2018-11-12 16:41:11,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:41:11,063 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1317 transitions. [2018-11-12 16:41:11,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-12 16:41:11,070 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:41:11,071 INFO L375 BasicCegarLoop]: trace histogram [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 16:41:11,071 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:41:11,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:11,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1302498186, now seen corresponding path program 1 times [2018-11-12 16:41:11,072 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:41:11,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:11,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:41:11,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:11,074 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:41:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:41:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:41:11,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:41:11,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:41:11,462 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:41:11,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:41:11,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:41:11,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:41:11,465 INFO L87 Difference]: Start difference. First operand 744 states and 1317 transitions. Second operand 6 states. [2018-11-12 16:41:20,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:41:20,993 INFO L93 Difference]: Finished difference Result 2959 states and 5501 transitions. [2018-11-12 16:41:20,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 16:41:20,994 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-11-12 16:41:20,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:41:21,022 INFO L225 Difference]: With dead ends: 2959 [2018-11-12 16:41:21,022 INFO L226 Difference]: Without dead ends: 2221 [2018-11-12 16:41:21,038 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 16:41:21,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2018-11-12 16:41:21,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 2175. [2018-11-12 16:41:21,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2175 states. [2018-11-12 16:41:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 3684 transitions. [2018-11-12 16:41:21,178 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 3684 transitions. Word has length 102 [2018-11-12 16:41:21,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:41:21,179 INFO L480 AbstractCegarLoop]: Abstraction has 2175 states and 3684 transitions. [2018-11-12 16:41:21,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:41:21,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 3684 transitions. [2018-11-12 16:41:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-12 16:41:21,190 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:41:21,190 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:41:21,190 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:41:21,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:21,191 INFO L82 PathProgramCache]: Analyzing trace with hash -583242678, now seen corresponding path program 1 times [2018-11-12 16:41:21,191 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:41:21,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:21,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:41:21,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:21,193 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:41:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:41:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:41:21,430 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:41:21,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:41:21,431 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:41:21,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:41:21,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:41:21,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:41:21,432 INFO L87 Difference]: Start difference. First operand 2175 states and 3684 transitions. Second operand 6 states. [2018-11-12 16:41:26,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:41:26,121 INFO L93 Difference]: Finished difference Result 6460 states and 11189 transitions. [2018-11-12 16:41:26,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:41:26,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-11-12 16:41:26,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:41:26,156 INFO L225 Difference]: With dead ends: 6460 [2018-11-12 16:41:26,156 INFO L226 Difference]: Without dead ends: 4291 [2018-11-12 16:41:26,181 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 16:41:26,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states. [2018-11-12 16:41:26,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4291 to 4253. [2018-11-12 16:41:26,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4253 states. [2018-11-12 16:41:26,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4253 states to 4253 states and 6458 transitions. [2018-11-12 16:41:26,335 INFO L78 Accepts]: Start accepts. Automaton has 4253 states and 6458 transitions. Word has length 108 [2018-11-12 16:41:26,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:41:26,336 INFO L480 AbstractCegarLoop]: Abstraction has 4253 states and 6458 transitions. [2018-11-12 16:41:26,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:41:26,336 INFO L276 IsEmpty]: Start isEmpty. Operand 4253 states and 6458 transitions. [2018-11-12 16:41:26,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-12 16:41:26,340 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:41:26,341 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:41:26,341 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:41:26,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:26,341 INFO L82 PathProgramCache]: Analyzing trace with hash 722807126, now seen corresponding path program 1 times [2018-11-12 16:41:26,342 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:41:26,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:26,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:41:26,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:26,343 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:41:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:41:26,580 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 16:41:26,580 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:41:26,580 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:41:26,581 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 119 with the following transitions: [2018-11-12 16:41:26,584 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [287], [289], [292], [300], [308], [316], [324], [332], [340], [348], [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], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:41:26,631 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:41:26,631 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:41:27,412 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:41:27,988 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:41:27,989 INFO L272 AbstractInterpreter]: Visited 99 different actions 284 times. Merged at 5 different actions 9 times. Never widened. Performed 4366 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4366 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 16:41:28,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:28,034 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:41:28,544 INFO L227 lantSequenceWeakener]: Weakened 52 states. On average, predicates are now at 78.71% of their original sizes. [2018-11-12 16:41:28,544 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:41:29,916 INFO L415 sIntCurrentIteration]: We unified 117 AI predicates to 117 [2018-11-12 16:41:29,917 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:41:29,918 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:41:29,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [4] total 20 [2018-11-12 16:41:29,918 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:41:29,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 16:41:29,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 16:41:29,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-11-12 16:41:29,920 INFO L87 Difference]: Start difference. First operand 4253 states and 6458 transitions. Second operand 18 states. [2018-11-12 16:42:13,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:42:13,588 INFO L93 Difference]: Finished difference Result 11539 states and 18175 transitions. [2018-11-12 16:42:13,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-12 16:42:13,588 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 118 [2018-11-12 16:42:13,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:42:13,625 INFO L225 Difference]: With dead ends: 11539 [2018-11-12 16:42:13,625 INFO L226 Difference]: Without dead ends: 7292 [2018-11-12 16:42:13,664 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 131 GetRequests, 82 SyntacticMatches, 19 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=190, Invalid=802, Unknown=0, NotChecked=0, Total=992 [2018-11-12 16:42:13,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7292 states. [2018-11-12 16:42:13,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7292 to 7047. [2018-11-12 16:42:13,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7047 states. [2018-11-12 16:42:13,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7047 states to 7047 states and 9410 transitions. [2018-11-12 16:42:13,846 INFO L78 Accepts]: Start accepts. Automaton has 7047 states and 9410 transitions. Word has length 118 [2018-11-12 16:42:13,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:42:13,847 INFO L480 AbstractCegarLoop]: Abstraction has 7047 states and 9410 transitions. [2018-11-12 16:42:13,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 16:42:13,847 INFO L276 IsEmpty]: Start isEmpty. Operand 7047 states and 9410 transitions. [2018-11-12 16:42:13,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-12 16:42:13,851 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:42:13,852 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:42:13,852 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:42:13,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:13,852 INFO L82 PathProgramCache]: Analyzing trace with hash -564727145, now seen corresponding path program 1 times [2018-11-12 16:42:13,853 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:42:13,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:13,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:42:13,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:13,854 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:42:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:42:14,191 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:42:14,459 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 16:42:14,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:42:14,459 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:42:14,460 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 180 with the following transitions: [2018-11-12 16:42:14,460 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [287], [289], [292], [300], [308], [316], [324], [332], [340], [348], [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], [1004], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:42:14,468 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:42:14,468 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:42:14,711 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:42:15,674 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:42:15,674 INFO L272 AbstractInterpreter]: Visited 160 different actions 467 times. Merged at 5 different actions 9 times. Never widened. Performed 8003 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8003 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 16:42:15,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:15,685 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:42:15,976 INFO L227 lantSequenceWeakener]: Weakened 113 states. On average, predicates are now at 77.93% of their original sizes. [2018-11-12 16:42:15,976 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:42:16,517 INFO L415 sIntCurrentIteration]: We unified 178 AI predicates to 178 [2018-11-12 16:42:16,517 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:42:16,517 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:42:16,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [4] total 23 [2018-11-12 16:42:16,518 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:42:16,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 16:42:16,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 16:42:16,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2018-11-12 16:42:16,519 INFO L87 Difference]: Start difference. First operand 7047 states and 9410 transitions. Second operand 21 states. [2018-11-12 16:43:20,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:43:20,012 INFO L93 Difference]: Finished difference Result 16640 states and 24282 transitions. [2018-11-12 16:43:20,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-12 16:43:20,012 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 179 [2018-11-12 16:43:20,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:43:20,061 INFO L225 Difference]: With dead ends: 16640 [2018-11-12 16:43:20,061 INFO L226 Difference]: Without dead ends: 11021 [2018-11-12 16:43:20,091 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 200 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=332, Invalid=1474, Unknown=0, NotChecked=0, Total=1806 [2018-11-12 16:43:20,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11021 states. [2018-11-12 16:43:20,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11021 to 10161. [2018-11-12 16:43:20,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10161 states. [2018-11-12 16:43:20,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10161 states to 10161 states and 12757 transitions. [2018-11-12 16:43:20,347 INFO L78 Accepts]: Start accepts. Automaton has 10161 states and 12757 transitions. Word has length 179 [2018-11-12 16:43:20,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:43:20,347 INFO L480 AbstractCegarLoop]: Abstraction has 10161 states and 12757 transitions. [2018-11-12 16:43:20,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 16:43:20,348 INFO L276 IsEmpty]: Start isEmpty. Operand 10161 states and 12757 transitions. [2018-11-12 16:43:20,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-11-12 16:43:20,354 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:43:20,354 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:43:20,354 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:43:20,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:20,355 INFO L82 PathProgramCache]: Analyzing trace with hash -753914688, now seen corresponding path program 1 times [2018-11-12 16:43:20,355 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:43:20,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:20,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:43:20,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:20,356 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:43:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:43:20,664 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:43:21,123 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 39 proven. 14 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-12 16:43:21,123 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:43:21,124 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:43:21,124 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 239 with the following transitions: [2018-11-12 16:43:21,124 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [287], [289], [292], [300], [308], [316], [324], [332], [340], [348], [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], [728], [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 16:43:21,140 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:43:21,141 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:43:21,319 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:43:21,672 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:43:21,672 INFO L272 AbstractInterpreter]: Visited 136 different actions 395 times. Merged at 5 different actions 9 times. Never widened. Performed 7177 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7177 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 16:43:21,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:21,709 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:43:22,087 INFO L227 lantSequenceWeakener]: Weakened 54 states. On average, predicates are now at 78.65% of their original sizes. [2018-11-12 16:43:22,088 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:43:22,653 INFO L415 sIntCurrentIteration]: We unified 237 AI predicates to 237 [2018-11-12 16:43:22,653 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:43:22,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:43:22,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [6] total 29 [2018-11-12 16:43:22,653 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:43:22,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-12 16:43:22,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-12 16:43:22,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2018-11-12 16:43:22,655 INFO L87 Difference]: Start difference. First operand 10161 states and 12757 transitions. Second operand 25 states. [2018-11-12 16:43:59,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:43:59,443 INFO L93 Difference]: Finished difference Result 20900 states and 28159 transitions. [2018-11-12 16:43:59,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-12 16:43:59,443 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 238 [2018-11-12 16:43:59,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:43:59,485 INFO L225 Difference]: With dead ends: 20900 [2018-11-12 16:43:59,485 INFO L226 Difference]: Without dead ends: 13036 [2018-11-12 16:43:59,506 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 256 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=341, Invalid=1551, Unknown=0, NotChecked=0, Total=1892 [2018-11-12 16:43:59,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13036 states. [2018-11-12 16:43:59,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13036 to 12760. [2018-11-12 16:43:59,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12760 states. [2018-11-12 16:43:59,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12760 states to 12760 states and 15511 transitions. [2018-11-12 16:43:59,792 INFO L78 Accepts]: Start accepts. Automaton has 12760 states and 15511 transitions. Word has length 238 [2018-11-12 16:43:59,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:43:59,792 INFO L480 AbstractCegarLoop]: Abstraction has 12760 states and 15511 transitions. [2018-11-12 16:43:59,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-12 16:43:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 12760 states and 15511 transitions. [2018-11-12 16:43:59,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-11-12 16:43:59,811 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:43:59,811 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:43:59,812 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:43:59,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:59,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1502464705, now seen corresponding path program 1 times [2018-11-12 16:43:59,812 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:43:59,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:59,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:43:59,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:59,814 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:43:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:00,406 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-12 16:44:00,841 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 143 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:44:00,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:44:00,842 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:44:00,842 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 386 with the following transitions: [2018-11-12 16:44:00,843 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [287], [289], [292], [300], [308], [316], [324], [332], [340], [348], [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], [868], [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 16:44:00,847 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:44:00,847 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:44:01,368 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:44:01,368 INFO L272 AbstractInterpreter]: Visited 248 different actions 490 times. Merged at 5 different actions 5 times. Never widened. Performed 6295 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6295 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 16:44:01,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:01,408 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:44:02,439 INFO L227 lantSequenceWeakener]: Weakened 155 states. On average, predicates are now at 77.82% of their original sizes. [2018-11-12 16:44:02,439 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:44:03,116 INFO L415 sIntCurrentIteration]: We unified 384 AI predicates to 384 [2018-11-12 16:44:03,116 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:44:03,116 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:44:03,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [8] total 25 [2018-11-12 16:44:03,117 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:03,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 16:44:03,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 16:44:03,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:44:03,119 INFO L87 Difference]: Start difference. First operand 12760 states and 15511 transitions. Second operand 19 states. [2018-11-12 16:44:04,974 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:44:25,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:25,319 INFO L93 Difference]: Finished difference Result 22986 states and 28721 transitions. [2018-11-12 16:44:25,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-12 16:44:25,320 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 385 [2018-11-12 16:44:25,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:25,359 INFO L225 Difference]: With dead ends: 22986 [2018-11-12 16:44:25,360 INFO L226 Difference]: Without dead ends: 13396 [2018-11-12 16:44:25,378 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 402 GetRequests, 353 SyntacticMatches, 14 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=1083, Unknown=0, NotChecked=0, Total=1332 [2018-11-12 16:44:25,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13396 states. [2018-11-12 16:44:25,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13396 to 13391. [2018-11-12 16:44:25,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13391 states. [2018-11-12 16:44:25,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13391 states to 13391 states and 16182 transitions. [2018-11-12 16:44:25,637 INFO L78 Accepts]: Start accepts. Automaton has 13391 states and 16182 transitions. Word has length 385 [2018-11-12 16:44:25,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:25,638 INFO L480 AbstractCegarLoop]: Abstraction has 13391 states and 16182 transitions. [2018-11-12 16:44:25,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 16:44:25,639 INFO L276 IsEmpty]: Start isEmpty. Operand 13391 states and 16182 transitions. [2018-11-12 16:44:25,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-11-12 16:44:25,655 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:25,655 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:44:25,655 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:25,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:25,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1266186968, now seen corresponding path program 1 times [2018-11-12 16:44:25,656 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:25,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:25,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:25,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:25,657 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:26,018 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:44:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 39 proven. 44 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 16:44:26,584 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:44:26,584 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:44:26,584 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 387 with the following transitions: [2018-11-12 16:44:26,584 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [287], [289], [292], [300], [308], [316], [324], [332], [340], [348], [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], [840], [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 16:44:26,589 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:44:26,589 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:44:29,484 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:44:29,485 INFO L272 AbstractInterpreter]: Visited 256 different actions 2506 times. Merged at 5 different actions 45 times. Widened at 1 different actions 5 times. Performed 42010 root evaluator evaluations with a maximum evaluation depth of 6. Performed 42010 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 16:44:29,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:29,495 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:44:30,025 INFO L227 lantSequenceWeakener]: Weakened 33 states. On average, predicates are now at 79.48% of their original sizes. [2018-11-12 16:44:30,026 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:44:30,399 INFO L415 sIntCurrentIteration]: We unified 385 AI predicates to 385 [2018-11-12 16:44:30,399 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:44:30,399 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:44:30,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-12 16:44:30,400 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:30,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 16:44:30,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 16:44:30,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2018-11-12 16:44:30,401 INFO L87 Difference]: Start difference. First operand 13391 states and 16182 transitions. Second operand 22 states. [2018-11-12 16:44:32,886 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 16:44:39,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 16:44:39,876 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:44:39,881 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:44:39,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:44:39 BoogieIcfgContainer [2018-11-12 16:44:39,881 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:44:39,882 INFO L168 Benchmark]: Toolchain (without parser) took 221338.95 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -789.1 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-11-12 16:44:39,883 INFO L168 Benchmark]: CDTParser took 0.22 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 16:44:39,884 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1329.92 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:44:39,885 INFO L168 Benchmark]: Boogie Procedure Inliner took 180.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -875.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:44:39,886 INFO L168 Benchmark]: Boogie Preprocessor took 184.43 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 16:44:39,886 INFO L168 Benchmark]: RCFGBuilder took 6514.91 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: 251.0 MB). Peak memory consumption was 251.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:44:39,887 INFO L168 Benchmark]: TraceAbstraction took 213124.93 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -238.3 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-12 16:44:39,892 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1329.92 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 180.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -875.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 184.43 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 6514.91 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: 251.0 MB). Peak memory consumption was 251.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213124.93 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -238.3 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 64). Cancelled while BasicCegarLoop was constructing difference of abstraction (13391states) and FLOYD_HOARE automaton (currently 17 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (1707 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 213.0s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 193.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2030 SDtfs, 24564 SDslu, 1906 SDs, 0 SdLazy, 31331 SolverSat, 5404 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.3s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 1407 GetRequests, 1180 SyntacticMatches, 36 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1945 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13391occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.7s AbstIntTime, 5 AbstIntIterations, 5 AbstIntStrong, 0.9976044213336601 AbsIntWeakeningRatio, 0.09069946195234435 AbsIntAvgWeakeningVarsNumRemoved, 11.664104534973097 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 1470 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 1542 NumberOfCodeBlocks, 1542 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1534 ConstructedInterpolants, 0 QuantifiedInterpolants, 2929507 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 403/505 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown