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/Problem17_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:08:01,586 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:08:01,588 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:08:01,600 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:08:01,600 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:08:01,601 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:08:01,603 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:08:01,605 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:08:01,606 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:08:01,607 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:08:01,608 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:08:01,608 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:08:01,609 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:08:01,610 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:08:01,612 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:08:01,612 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:08:01,613 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:08:01,615 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:08:01,617 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:08:01,619 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:08:01,620 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:08:01,621 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:08:01,624 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 21:08:01,624 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 21:08:01,624 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 21:08:01,625 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 21:08:01,627 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 21:08:01,627 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 21:08:01,628 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 21:08:01,629 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 21:08:01,630 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 21:08:01,630 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 21:08:01,631 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:08:01,631 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:08:01,632 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:08:01,633 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:08:01,633 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 [2018-11-07 21:08:01,654 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:08:01,657 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:08:01,658 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:08:01,658 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:08:01,659 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:08:01,659 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:08:01,659 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:08:01,659 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:08:01,659 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:08:01,662 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:08:01,662 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:08:01,662 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:08:01,662 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:08:01,663 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:08:01,663 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:08:01,664 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:08:01,664 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:08:01,664 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:08:01,664 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:08:01,664 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:08:01,666 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:08:01,666 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:08:01,666 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:08:01,666 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:08:01,666 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:08:01,667 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:08:01,667 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:08:01,667 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:08:01,667 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:08:01,667 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:08:01,668 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:08:01,668 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:08:01,668 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:08:01,668 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:08:01,668 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:08:01,719 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:08:01,731 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:08:01,735 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:08:01,737 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:08:01,737 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:08:01,738 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c [2018-11-07 21:08:01,804 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4b1700b2/b95e09f3fb0249438413e794e0906813/FLAG9c156da33 [2018-11-07 21:08:02,518 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:08:02,519 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c [2018-11-07 21:08:02,541 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4b1700b2/b95e09f3fb0249438413e794e0906813/FLAG9c156da33 [2018-11-07 21:08:02,557 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4b1700b2/b95e09f3fb0249438413e794e0906813 [2018-11-07 21:08:02,569 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:08:02,572 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:08:02,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:08:02,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:08:02,581 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:08:02,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:08:02" (1/1) ... [2018-11-07 21:08:02,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e745eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:02, skipping insertion in model container [2018-11-07 21:08:02,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:08:02" (1/1) ... [2018-11-07 21:08:02,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:08:02,733 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:08:03,737 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:08:03,743 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:08:04,133 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:08:04,158 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:08:04,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:04 WrapperNode [2018-11-07 21:08:04,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:08:04,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:08:04,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:08:04,160 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:08:04,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:04" (1/1) ... [2018-11-07 21:08:04,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:04" (1/1) ... [2018-11-07 21:08:04,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:08:04,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:08:04,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:08:04,405 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:08:04,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:04" (1/1) ... [2018-11-07 21:08:04,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:04" (1/1) ... [2018-11-07 21:08:04,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:04" (1/1) ... [2018-11-07 21:08:04,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:04" (1/1) ... [2018-11-07 21:08:04,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:04" (1/1) ... [2018-11-07 21:08:04,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:04" (1/1) ... [2018-11-07 21:08:04,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:04" (1/1) ... [2018-11-07 21:08:04,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:08:04,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:08:04,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:08:04,605 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:08:04,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:08:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:08:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:08:04,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:08:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:08:04,670 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:08:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:08:04,670 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:08:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:08:04,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:08:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:08:04,671 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:08:12,482 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:08:12,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:08:12 BoogieIcfgContainer [2018-11-07 21:08:12,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:08:12,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:08:12,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:08:12,488 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:08:12,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:08:02" (1/3) ... [2018-11-07 21:08:12,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c06b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:08:12, skipping insertion in model container [2018-11-07 21:08:12,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:04" (2/3) ... [2018-11-07 21:08:12,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c06b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:08:12, skipping insertion in model container [2018-11-07 21:08:12,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:08:12" (3/3) ... [2018-11-07 21:08:12,492 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label58_true-unreach-call.c [2018-11-07 21:08:12,503 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:08:12,514 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:08:12,534 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:08:12,588 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:08:12,588 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:08:12,588 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:08:12,588 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:08:12,588 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:08:12,589 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:08:12,589 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:08:12,589 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:08:12,630 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 21:08:12,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-07 21:08:12,639 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:08:12,640 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:08:12,642 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:08:12,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:08:12,648 INFO L82 PathProgramCache]: Analyzing trace with hash -567488676, now seen corresponding path program 1 times [2018-11-07 21:08:12,650 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:08:12,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:08:12,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:08:12,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:08:12,700 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:08:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:08:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:08:13,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:08:13,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:08:13,215 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:08:13,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:08:13,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:08:13,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:08:13,240 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 21:08:23,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:08:23,374 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-11-07 21:08:23,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:08:23,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-11-07 21:08:23,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:08:23,410 INFO L225 Difference]: With dead ends: 2162 [2018-11-07 21:08:23,411 INFO L226 Difference]: Without dead ends: 1552 [2018-11-07 21:08:23,423 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 [2018-11-07 21:08:23,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-11-07 21:08:23,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-11-07 21:08:23,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-11-07 21:08:23,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-11-07 21:08:23,583 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 52 [2018-11-07 21:08:23,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:08:23,584 INFO L480 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-11-07 21:08:23,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:08:23,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-11-07 21:08:23,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 21:08:23,594 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:08:23,594 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:08:23,595 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:08:23,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:08:23,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1938169354, now seen corresponding path program 1 times [2018-11-07 21:08:23,595 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:08:23,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:08:23,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:08:23,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:08:23,597 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:08:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:08:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:08:23,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:08:23,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:08:23,916 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:08:23,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:08:23,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:08:23,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:08:23,918 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-11-07 21:08:34,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:08:34,725 INFO L93 Difference]: Finished difference Result 5786 states and 10670 transitions. [2018-11-07 21:08:34,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:08:34,726 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-07 21:08:34,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:08:34,760 INFO L225 Difference]: With dead ends: 5786 [2018-11-07 21:08:34,760 INFO L226 Difference]: Without dead ends: 4267 [2018-11-07 21:08:34,780 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:08:34,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2018-11-07 21:08:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4241. [2018-11-07 21:08:34,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4241 states. [2018-11-07 21:08:34,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4241 states to 4241 states and 6348 transitions. [2018-11-07 21:08:34,945 INFO L78 Accepts]: Start accepts. Automaton has 4241 states and 6348 transitions. Word has length 131 [2018-11-07 21:08:34,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:08:34,946 INFO L480 AbstractCegarLoop]: Abstraction has 4241 states and 6348 transitions. [2018-11-07 21:08:34,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:08:34,946 INFO L276 IsEmpty]: Start isEmpty. Operand 4241 states and 6348 transitions. [2018-11-07 21:08:34,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 21:08:34,955 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:08:34,955 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:08:34,961 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:08:34,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:08:34,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1881840966, now seen corresponding path program 1 times [2018-11-07 21:08:34,962 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:08:34,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:08:34,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:08:34,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:08:34,963 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:08:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:08:35,256 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:08:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:08:35,390 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:08:35,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:08:35,390 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:08:35,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:08:35,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:08:35,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:08:35,392 INFO L87 Difference]: Start difference. First operand 4241 states and 6348 transitions. Second operand 6 states. [2018-11-07 21:08:41,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:08:41,030 INFO L93 Difference]: Finished difference Result 12261 states and 20027 transitions. [2018-11-07 21:08:41,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:08:41,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-11-07 21:08:41,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:08:41,089 INFO L225 Difference]: With dead ends: 12261 [2018-11-07 21:08:41,089 INFO L226 Difference]: Without dead ends: 8026 [2018-11-07 21:08:41,114 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 21:08:41,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8026 states. [2018-11-07 21:08:41,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8026 to 7941. [2018-11-07 21:08:41,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7941 states. [2018-11-07 21:08:41,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7941 states to 7941 states and 11952 transitions. [2018-11-07 21:08:41,404 INFO L78 Accepts]: Start accepts. Automaton has 7941 states and 11952 transitions. Word has length 132 [2018-11-07 21:08:41,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:08:41,405 INFO L480 AbstractCegarLoop]: Abstraction has 7941 states and 11952 transitions. [2018-11-07 21:08:41,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:08:41,405 INFO L276 IsEmpty]: Start isEmpty. Operand 7941 states and 11952 transitions. [2018-11-07 21:08:41,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-11-07 21:08:41,415 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:08:41,415 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:08:41,415 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:08:41,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:08:41,416 INFO L82 PathProgramCache]: Analyzing trace with hash -502912620, now seen corresponding path program 1 times [2018-11-07 21:08:41,416 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:08:41,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:08:41,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:08:41,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:08:41,417 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:08:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:08:41,799 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 91 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 21:08:41,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:08:41,800 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:08:41,800 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 207 with the following transitions: [2018-11-07 21:08:41,802 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1239], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:08:41,857 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:08:41,857 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:08:42,362 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:08:43,141 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:08:43,142 INFO L272 AbstractInterpreter]: Visited 88 different actions 250 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 21:08:43,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:08:43,188 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:08:43,188 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:08:43,188 INFO L194 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 [2018-11-07 21:08:43,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:08:43,202 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:08:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:08:43,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:08:43,898 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:08:43,898 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:08:44,135 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 21:08:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:08:44,635 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 21:08:44,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 21:08:44,635 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 21:08:44,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 21:08:44,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 21:08:44,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 21:08:44,637 INFO L87 Difference]: Start difference. First operand 7941 states and 11952 transitions. Second operand 9 states. [2018-11-07 21:08:53,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:08:53,122 INFO L93 Difference]: Finished difference Result 19976 states and 30375 transitions. [2018-11-07 21:08:53,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 21:08:53,126 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 206 [2018-11-07 21:08:53,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:08:53,223 INFO L225 Difference]: With dead ends: 19976 [2018-11-07 21:08:53,223 INFO L226 Difference]: Without dead ends: 12006 [2018-11-07 21:08:53,295 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 410 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2018-11-07 21:08:53,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12006 states. [2018-11-07 21:08:53,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12006 to 11981. [2018-11-07 21:08:53,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11981 states. [2018-11-07 21:08:53,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11981 states to 11981 states and 15407 transitions. [2018-11-07 21:08:53,653 INFO L78 Accepts]: Start accepts. Automaton has 11981 states and 15407 transitions. Word has length 206 [2018-11-07 21:08:53,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:08:53,653 INFO L480 AbstractCegarLoop]: Abstraction has 11981 states and 15407 transitions. [2018-11-07 21:08:53,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 21:08:53,654 INFO L276 IsEmpty]: Start isEmpty. Operand 11981 states and 15407 transitions. [2018-11-07 21:08:53,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-11-07 21:08:53,662 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:08:53,662 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:08:53,663 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:08:53,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:08:53,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1533263748, now seen corresponding path program 1 times [2018-11-07 21:08:53,663 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:08:53,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:08:53,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:08:53,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:08:53,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:08:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:08:54,049 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 21:08:54,050 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:08:54,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:08:54,050 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:08:54,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:08:54,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:08:54,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:08:54,051 INFO L87 Difference]: Start difference. First operand 11981 states and 15407 transitions. Second operand 4 states. [2018-11-07 21:09:00,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:09:00,351 INFO L93 Difference]: Finished difference Result 32022 states and 44272 transitions. [2018-11-07 21:09:00,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:09:00,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 219 [2018-11-07 21:09:00,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:09:00,423 INFO L225 Difference]: With dead ends: 32022 [2018-11-07 21:09:00,423 INFO L226 Difference]: Without dead ends: 15975 [2018-11-07 21:09:00,500 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:09:00,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15975 states. [2018-11-07 21:09:00,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15975 to 13271. [2018-11-07 21:09:00,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13271 states. [2018-11-07 21:09:00,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13271 states to 13271 states and 16243 transitions. [2018-11-07 21:09:00,821 INFO L78 Accepts]: Start accepts. Automaton has 13271 states and 16243 transitions. Word has length 219 [2018-11-07 21:09:00,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:09:00,822 INFO L480 AbstractCegarLoop]: Abstraction has 13271 states and 16243 transitions. [2018-11-07 21:09:00,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:09:00,822 INFO L276 IsEmpty]: Start isEmpty. Operand 13271 states and 16243 transitions. [2018-11-07 21:09:00,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-11-07 21:09:00,833 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:09:00,833 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:09:00,833 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:09:00,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:09:00,834 INFO L82 PathProgramCache]: Analyzing trace with hash -562860899, now seen corresponding path program 1 times [2018-11-07 21:09:00,834 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:09:00,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:00,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:09:00,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:00,835 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:09:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:09:01,243 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:09:02,072 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 118 proven. 53 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 21:09:02,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:09:02,072 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:09:02,073 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 332 with the following transitions: [2018-11-07 21:09:02,074 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1806], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:09:02,093 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:09:02,093 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:09:02,229 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:09:04,361 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:09:04,361 INFO L272 AbstractInterpreter]: Visited 200 different actions 789 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 21:09:04,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:09:04,400 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:09:04,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:09:04,400 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 21:09:04,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:09:04,412 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:09:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:09:04,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:09:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 21:09:04,745 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:09:04,930 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 21:09:04,951 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:09:04,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-07 21:09:04,952 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:09:04,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 21:09:04,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 21:09:04,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:09:04,953 INFO L87 Difference]: Start difference. First operand 13271 states and 16243 transitions. Second operand 3 states. [2018-11-07 21:09:07,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:09:07,040 INFO L93 Difference]: Finished difference Result 26536 states and 32480 transitions. [2018-11-07 21:09:07,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 21:09:07,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2018-11-07 21:09:07,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:09:07,091 INFO L225 Difference]: With dead ends: 26536 [2018-11-07 21:09:07,091 INFO L226 Difference]: Without dead ends: 13271 [2018-11-07 21:09:07,113 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 662 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:09:07,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13271 states. [2018-11-07 21:09:07,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13271 to 13271. [2018-11-07 21:09:07,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13271 states. [2018-11-07 21:09:07,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13271 states to 13271 states and 15928 transitions. [2018-11-07 21:09:07,368 INFO L78 Accepts]: Start accepts. Automaton has 13271 states and 15928 transitions. Word has length 331 [2018-11-07 21:09:07,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:09:07,369 INFO L480 AbstractCegarLoop]: Abstraction has 13271 states and 15928 transitions. [2018-11-07 21:09:07,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 21:09:07,369 INFO L276 IsEmpty]: Start isEmpty. Operand 13271 states and 15928 transitions. [2018-11-07 21:09:07,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-11-07 21:09:07,380 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:09:07,381 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:09:07,381 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:09:07,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:09:07,381 INFO L82 PathProgramCache]: Analyzing trace with hash 897107937, now seen corresponding path program 1 times [2018-11-07 21:09:07,382 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:09:07,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:07,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:09:07,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:07,384 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:09:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:09:08,361 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 21:09:08,362 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:09:08,362 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:09:08,362 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 357 with the following transitions: [2018-11-07 21:09:08,364 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1474], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:09:08,376 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:09:08,376 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:09:08,470 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:09:09,717 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:09:09,718 INFO L272 AbstractInterpreter]: Visited 139 different actions 690 times. Merged at 8 different actions 43 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 21:09:09,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:09:09,756 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:09:09,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:09:09,756 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 21:09:09,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:09:09,769 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:09:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:09:09,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:09:10,110 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 21:09:10,110 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:09:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 21:09:10,662 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 21:09:10,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 21:09:10,662 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 21:09:10,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 21:09:10,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 21:09:10,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 21:09:10,664 INFO L87 Difference]: Start difference. First operand 13271 states and 15928 transitions. Second operand 7 states. [2018-11-07 21:09:17,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:09:17,931 INFO L93 Difference]: Finished difference Result 46291 states and 59312 transitions. [2018-11-07 21:09:17,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 21:09:17,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2018-11-07 21:09:17,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:09:18,030 INFO L225 Difference]: With dead ends: 46291 [2018-11-07 21:09:18,030 INFO L226 Difference]: Without dead ends: 30385 [2018-11-07 21:09:18,074 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 716 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-11-07 21:09:18,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30385 states. [2018-11-07 21:09:18,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30385 to 28469. [2018-11-07 21:09:18,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28469 states. [2018-11-07 21:09:18,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28469 states to 28469 states and 34315 transitions. [2018-11-07 21:09:18,614 INFO L78 Accepts]: Start accepts. Automaton has 28469 states and 34315 transitions. Word has length 356 [2018-11-07 21:09:18,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:09:18,615 INFO L480 AbstractCegarLoop]: Abstraction has 28469 states and 34315 transitions. [2018-11-07 21:09:18,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 21:09:18,616 INFO L276 IsEmpty]: Start isEmpty. Operand 28469 states and 34315 transitions. [2018-11-07 21:09:18,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-11-07 21:09:18,631 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:09:18,631 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:09:18,631 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:09:18,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:09:18,632 INFO L82 PathProgramCache]: Analyzing trace with hash -337293599, now seen corresponding path program 1 times [2018-11-07 21:09:18,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:09:18,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:18,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:09:18,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:18,633 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:09:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:09:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-11-07 21:09:19,060 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:09:19,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:09:19,060 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:09:19,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:09:19,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:09:19,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:09:19,062 INFO L87 Difference]: Start difference. First operand 28469 states and 34315 transitions. Second operand 4 states. [2018-11-07 21:09:23,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:09:23,493 INFO L93 Difference]: Finished difference Result 75303 states and 92392 transitions. [2018-11-07 21:09:23,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:09:23,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 379 [2018-11-07 21:09:23,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:09:24,024 INFO L225 Difference]: With dead ends: 75303 [2018-11-07 21:09:24,025 INFO L226 Difference]: Without dead ends: 38754 [2018-11-07 21:09:24,079 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:09:24,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38754 states. [2018-11-07 21:09:24,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38754 to 37853. [2018-11-07 21:09:24,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37853 states. [2018-11-07 21:09:24,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37853 states to 37853 states and 45049 transitions. [2018-11-07 21:09:24,687 INFO L78 Accepts]: Start accepts. Automaton has 37853 states and 45049 transitions. Word has length 379 [2018-11-07 21:09:24,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:09:24,687 INFO L480 AbstractCegarLoop]: Abstraction has 37853 states and 45049 transitions. [2018-11-07 21:09:24,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:09:24,688 INFO L276 IsEmpty]: Start isEmpty. Operand 37853 states and 45049 transitions. [2018-11-07 21:09:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-11-07 21:09:24,713 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:09:24,713 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, 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, 3, 3, 3, 3, 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] [2018-11-07 21:09:24,714 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:09:24,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:09:24,714 INFO L82 PathProgramCache]: Analyzing trace with hash -111931155, now seen corresponding path program 1 times [2018-11-07 21:09:24,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:09:24,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:24,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:09:24,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:24,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:09:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:09:25,145 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 195 proven. 314 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2018-11-07 21:09:25,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:09:25,146 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:09:25,146 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 455 with the following transitions: [2018-11-07 21:09:25,146 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1243], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1600], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:09:25,150 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:09:25,150 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:09:25,217 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:09:26,899 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:09:26,899 INFO L272 AbstractInterpreter]: Visited 161 different actions 960 times. Merged at 9 different actions 51 times. Widened at 1 different actions 1 times. Found 13 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 21:09:26,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:09:26,942 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:09:26,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:09:26,942 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 21:09:26,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:09:26,957 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:09:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:09:27,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:09:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 424 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-11-07 21:09:28,119 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:09:28,335 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2018-11-07 21:09:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 424 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-11-07 21:09:29,149 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 21:09:29,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-07 21:09:29,149 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 21:09:29,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 21:09:29,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 21:09:29,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-11-07 21:09:29,151 INFO L87 Difference]: Start difference. First operand 37853 states and 45049 transitions. Second operand 10 states. [2018-11-07 21:09:48,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:09:48,229 INFO L93 Difference]: Finished difference Result 91498 states and 108867 transitions. [2018-11-07 21:09:48,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-11-07 21:09:48,231 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 454 [2018-11-07 21:09:48,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:09:48,371 INFO L225 Difference]: With dead ends: 91498 [2018-11-07 21:09:48,371 INFO L226 Difference]: Without dead ends: 53212 [2018-11-07 21:09:48,429 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1022 GetRequests, 956 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1496 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=696, Invalid=3860, Unknown=0, NotChecked=0, Total=4556 [2018-11-07 21:09:48,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53212 states. [2018-11-07 21:09:49,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53212 to 47155. [2018-11-07 21:09:49,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47155 states. [2018-11-07 21:09:49,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47155 states to 47155 states and 54990 transitions. [2018-11-07 21:09:49,256 INFO L78 Accepts]: Start accepts. Automaton has 47155 states and 54990 transitions. Word has length 454 [2018-11-07 21:09:49,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:09:49,256 INFO L480 AbstractCegarLoop]: Abstraction has 47155 states and 54990 transitions. [2018-11-07 21:09:49,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 21:09:49,257 INFO L276 IsEmpty]: Start isEmpty. Operand 47155 states and 54990 transitions. [2018-11-07 21:09:49,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2018-11-07 21:09:49,310 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:09:49,311 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:09:49,311 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:09:49,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:09:49,312 INFO L82 PathProgramCache]: Analyzing trace with hash -911093887, now seen corresponding path program 1 times [2018-11-07 21:09:49,312 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:09:49,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:49,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:09:49,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:49,313 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:09:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:09:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2018-11-07 21:09:50,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:09:50,302 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:09:50,302 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 667 with the following transitions: [2018-11-07 21:09:50,303 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [196], [199], [203], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1243], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:09:50,310 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:09:50,310 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:09:50,376 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:09:51,761 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:09:51,762 INFO L272 AbstractInterpreter]: Visited 341 different actions 1010 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 21:09:51,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:09:51,771 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:09:52,894 INFO L227 lantSequenceWeakener]: Weakened 658 states. On average, predicates are now at 75.24% of their original sizes. [2018-11-07 21:09:52,894 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:09:53,059 INFO L415 sIntCurrentIteration]: We unified 665 AI predicates to 665 [2018-11-07 21:09:53,059 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:09:53,060 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:09:53,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [4] total 15 [2018-11-07 21:09:53,060 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:09:53,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 21:09:53,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 21:09:53,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-07 21:09:53,062 INFO L87 Difference]: Start difference. First operand 47155 states and 54990 transitions. Second operand 13 states. [2018-11-07 21:10:47,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:10:47,593 INFO L93 Difference]: Finished difference Result 97400 states and 113636 transitions. [2018-11-07 21:10:47,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 21:10:47,593 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 666 [2018-11-07 21:10:47,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:10:47,737 INFO L225 Difference]: With dead ends: 97400 [2018-11-07 21:10:47,737 INFO L226 Difference]: Without dead ends: 50251 [2018-11-07 21:10:47,789 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 680 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2018-11-07 21:10:47,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50251 states. [2018-11-07 21:10:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50251 to 50239. [2018-11-07 21:10:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50239 states. [2018-11-07 21:10:48,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50239 states to 50239 states and 58557 transitions. [2018-11-07 21:10:48,557 INFO L78 Accepts]: Start accepts. Automaton has 50239 states and 58557 transitions. Word has length 666 [2018-11-07 21:10:48,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:10:48,558 INFO L480 AbstractCegarLoop]: Abstraction has 50239 states and 58557 transitions. [2018-11-07 21:10:48,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-07 21:10:48,558 INFO L276 IsEmpty]: Start isEmpty. Operand 50239 states and 58557 transitions. [2018-11-07 21:10:48,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2018-11-07 21:10:48,608 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:10:48,608 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:10:48,609 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:10:48,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:10:48,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1844283531, now seen corresponding path program 1 times [2018-11-07 21:10:48,609 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:10:48,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:10:48,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:10:48,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:10:48,610 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:10:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:10:49,478 WARN L179 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2018-11-07 21:10:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 506 proven. 48 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-11-07 21:10:51,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:10:51,016 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:10:51,016 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 736 with the following transitions: [2018-11-07 21:10:51,017 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [153], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1243], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1356], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:10:51,022 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:10:51,023 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:10:51,067 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:10:54,096 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:10:54,096 INFO L272 AbstractInterpreter]: Visited 337 different actions 2367 times. Merged at 10 different actions 82 times. Widened at 1 different actions 3 times. Found 20 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 21:10:54,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:10:54,103 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:10:54,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:10:54,103 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 21:10:54,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:10:54,121 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:10:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:10:54,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:10:55,486 WARN L179 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 371 DAG size of output: 70 [2018-11-07 21:10:56,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 806 proven. 2 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2018-11-07 21:10:56,481 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:10:57,576 WARN L179 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2018-11-07 21:10:57,726 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2018-11-07 21:10:58,202 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2018-11-07 21:10:59,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 546 proven. 8 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-11-07 21:10:59,115 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 21:10:59,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 7] total 18 [2018-11-07 21:10:59,116 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 21:10:59,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 21:10:59,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 21:10:59,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2018-11-07 21:10:59,118 INFO L87 Difference]: Start difference. First operand 50239 states and 58557 transitions. Second operand 13 states. [2018-11-07 21:11:15,429 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 89 [2018-11-07 21:11:35,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:11:35,313 INFO L93 Difference]: Finished difference Result 111614 states and 131718 transitions. [2018-11-07 21:11:35,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-11-07 21:11:35,313 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 735 [2018-11-07 21:11:35,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:11:35,468 INFO L225 Difference]: With dead ends: 111614 [2018-11-07 21:11:35,468 INFO L226 Difference]: Without dead ends: 65335 [2018-11-07 21:11:35,519 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1569 GetRequests, 1504 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=911, Invalid=3379, Unknown=0, NotChecked=0, Total=4290 [2018-11-07 21:11:35,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65335 states. Received shutdown request... [2018-11-07 21:11:36,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65335 to 60723. [2018-11-07 21:11:36,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60723 states. [2018-11-07 21:11:36,447 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:11:36,452 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:11:36,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:11:36 BoogieIcfgContainer [2018-11-07 21:11:36,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:11:36,454 INFO L168 Benchmark]: Toolchain (without parser) took 213883.05 ms. Allocated memory was 1.5 GB in the beginning and 5.6 GB in the end (delta: 4.1 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-07 21:11:36,455 INFO L168 Benchmark]: CDTParser took 0.26 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. [2018-11-07 21:11:36,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1585.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-07 21:11:36,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 244.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -978.6 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2018-11-07 21:11:36,457 INFO L168 Benchmark]: Boogie Preprocessor took 199.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-11-07 21:11:36,458 INFO L168 Benchmark]: RCFGBuilder took 7878.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 468.5 MB). Peak memory consumption was 468.5 MB. Max. memory is 7.1 GB. [2018-11-07 21:11:36,459 INFO L168 Benchmark]: TraceAbstraction took 203968.63 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 1.8 GB in the beginning and 3.0 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 21:11:36,463 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 1585.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 244.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -978.6 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 199.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7878.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 468.5 MB). Peak memory consumption was 468.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203968.63 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 1.8 GB in the beginning and 3.0 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 143). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 203.8s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 166.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4048 SDtfs, 24224 SDslu, 4491 SDs, 0 SdLazy, 65651 SolverSat, 8782 SolverUnsat, 179 SolverUnknown, 0 SolverNotchecked, 114.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 5137 GetRequests, 4917 SyntacticMatches, 11 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2810 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50239occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.4s AbstIntTime, 6 AbstIntIterations, 1 AbstIntStrong, 0.9981809662496163 AbsIntWeakeningRatio, 0.06616541353383458 AbsIntAvgWeakeningVarsNumRemoved, 24.19097744360902 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 11753 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 14.2s InterpolantComputationTime, 5743 NumberOfCodeBlocks, 5743 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 7804 ConstructedInterpolants, 10 QuantifiedInterpolants, 13602621 SizeOfPredicates, 13 NumberOfNonLiveVariables, 3308 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 8443/8889 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown