java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 20:56:14,493 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 20:56:14,495 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 20:56:14,507 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 20:56:14,508 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 20:56:14,509 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 20:56:14,510 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 20:56:14,512 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 20:56:14,514 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 20:56:14,515 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 20:56:14,515 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 20:56:14,516 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 20:56:14,517 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 20:56:14,518 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 20:56:14,519 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 20:56:14,520 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 20:56:14,521 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 20:56:14,523 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 20:56:14,525 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 20:56:14,526 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 20:56:14,528 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 20:56:14,529 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 20:56:14,532 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 20:56:14,539 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 20:56:14,539 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 20:56:14,540 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 20:56:14,541 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 20:56:14,542 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 20:56:14,570 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 20:56:14,570 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 20:56:14,571 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 20:56:14,572 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 20:56:14,573 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 20:56:14,573 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 20:56:14,573 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 20:56:14,574 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 20:56:14,574 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 20:56:14,574 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 20:56:14,574 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 20:56:14,574 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 20:56:14,576 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 20:56:14,576 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 20:56:14,576 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 20:56:14,576 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 20:56:14,576 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 20:56:14,577 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 20:56:14,577 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 20:56:14,577 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 20:56:14,577 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 20:56:14,577 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 20:56:14,578 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 20:56:14,579 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 20:56:14,579 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 20:56:14,579 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 20:56:14,580 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 20:56:14,580 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 20:56:14,580 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 20:56:14,580 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 20:56:14,580 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 20:56:14,581 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 20:56:14,581 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 20:56:14,581 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 20:56:14,649 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 20:56:14,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 20:56:14,673 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 20:56:14,675 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 20:56:14,675 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 20:56:14,676 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13_true-unreach-call.c [2018-10-24 20:56:14,735 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/92118221a/0988a934ff05421eb83c803f4af59352/FLAG8a2799bc2 [2018-10-24 20:56:15,300 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 20:56:15,302 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label13_true-unreach-call.c [2018-10-24 20:56:15,315 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/92118221a/0988a934ff05421eb83c803f4af59352/FLAG8a2799bc2 [2018-10-24 20:56:15,332 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/92118221a/0988a934ff05421eb83c803f4af59352 [2018-10-24 20:56:15,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 20:56:15,347 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 20:56:15,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 20:56:15,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 20:56:15,354 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 20:56:15,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 08:56:15" (1/1) ... [2018-10-24 20:56:15,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79efdec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:56:15, skipping insertion in model container [2018-10-24 20:56:15,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 08:56:15" (1/1) ... [2018-10-24 20:56:15,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 20:56:15,444 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 20:56:15,965 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 20:56:15,971 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 20:56:16,103 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 20:56:16,121 INFO L193 MainTranslator]: Completed translation [2018-10-24 20:56:16,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:56:16 WrapperNode [2018-10-24 20:56:16,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 20:56:16,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 20:56:16,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 20:56:16,123 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 20:56:16,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:56:16" (1/1) ... [2018-10-24 20:56:16,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:56:16" (1/1) ... [2018-10-24 20:56:16,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 20:56:16,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 20:56:16,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 20:56:16,340 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 20:56:16,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:56:16" (1/1) ... [2018-10-24 20:56:16,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:56:16" (1/1) ... [2018-10-24 20:56:16,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:56:16" (1/1) ... [2018-10-24 20:56:16,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:56:16" (1/1) ... [2018-10-24 20:56:16,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:56:16" (1/1) ... [2018-10-24 20:56:16,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:56:16" (1/1) ... [2018-10-24 20:56:16,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:56:16" (1/1) ... [2018-10-24 20:56:16,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 20:56:16,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 20:56:16,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 20:56:16,461 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 20:56:16,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:56:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 20:56:16,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 20:56:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 20:56:16,541 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 20:56:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 20:56:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 20:56:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 20:56:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 20:56:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 20:56:19,624 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 20:56:19,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 08:56:19 BoogieIcfgContainer [2018-10-24 20:56:19,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 20:56:19,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 20:56:19,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 20:56:19,631 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 20:56:19,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 08:56:15" (1/3) ... [2018-10-24 20:56:19,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383af6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 08:56:19, skipping insertion in model container [2018-10-24 20:56:19,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:56:16" (2/3) ... [2018-10-24 20:56:19,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383af6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 08:56:19, skipping insertion in model container [2018-10-24 20:56:19,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 08:56:19" (3/3) ... [2018-10-24 20:56:19,636 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label13_true-unreach-call.c [2018-10-24 20:56:19,646 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 20:56:19,655 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 20:56:19,673 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 20:56:19,712 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 20:56:19,712 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 20:56:19,712 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 20:56:19,712 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 20:56:19,713 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 20:56:19,713 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 20:56:19,713 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 20:56:19,713 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 20:56:19,741 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 20:56:19,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-24 20:56:19,752 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:56:19,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 20:56:19,756 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:56:19,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:56:19,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1833590460, now seen corresponding path program 1 times [2018-10-24 20:56:19,766 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:56:19,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:56:19,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:56:19,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:56:19,816 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:56:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:56:20,322 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 20:56:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:56:20,447 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:56:20,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 20:56:20,448 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:56:20,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 20:56:20,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 20:56:20,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 20:56:20,479 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-24 20:56:22,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:56:22,389 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-24 20:56:22,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 20:56:22,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2018-10-24 20:56:22,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:56:22,412 INFO L225 Difference]: With dead ends: 574 [2018-10-24 20:56:22,413 INFO L226 Difference]: Without dead ends: 356 [2018-10-24 20:56:22,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 20:56:22,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-24 20:56:22,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-24 20:56:22,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 20:56:22,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-24 20:56:22,505 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 62 [2018-10-24 20:56:22,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:56:22,506 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-24 20:56:22,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 20:56:22,506 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-24 20:56:22,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-24 20:56:22,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:56:22,517 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, 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] [2018-10-24 20:56:22,517 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:56:22,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:56:22,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1187218136, now seen corresponding path program 1 times [2018-10-24 20:56:22,518 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:56:22,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:56:22,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:56:22,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:56:22,520 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:56:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:56:23,041 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:56:23,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:56:23,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 20:56:23,042 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:56:23,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 20:56:23,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 20:56:23,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 20:56:23,046 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-10-24 20:56:26,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:56:26,843 INFO L93 Difference]: Finished difference Result 1140 states and 2022 transitions. [2018-10-24 20:56:26,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 20:56:26,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2018-10-24 20:56:26,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:56:26,856 INFO L225 Difference]: With dead ends: 1140 [2018-10-24 20:56:26,856 INFO L226 Difference]: Without dead ends: 790 [2018-10-24 20:56:26,860 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 20:56:26,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2018-10-24 20:56:26,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 784. [2018-10-24 20:56:26,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2018-10-24 20:56:26,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1300 transitions. [2018-10-24 20:56:26,912 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1300 transitions. Word has length 182 [2018-10-24 20:56:26,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:56:26,913 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1300 transitions. [2018-10-24 20:56:26,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 20:56:26,913 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1300 transitions. [2018-10-24 20:56:26,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-24 20:56:26,921 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:56:26,921 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, 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] [2018-10-24 20:56:26,921 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:56:26,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:56:26,922 INFO L82 PathProgramCache]: Analyzing trace with hash 853127875, now seen corresponding path program 1 times [2018-10-24 20:56:26,922 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:56:26,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:56:26,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:56:26,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:56:26,924 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:56:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:56:27,355 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 20:56:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:56:27,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:56:27,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 20:56:27,788 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:56:27,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 20:56:27,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 20:56:27,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 20:56:27,789 INFO L87 Difference]: Start difference. First operand 784 states and 1300 transitions. Second operand 6 states. [2018-10-24 20:56:33,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:56:33,108 INFO L93 Difference]: Finished difference Result 1975 states and 3367 transitions. [2018-10-24 20:56:33,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 20:56:33,109 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-10-24 20:56:33,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:56:33,117 INFO L225 Difference]: With dead ends: 1975 [2018-10-24 20:56:33,117 INFO L226 Difference]: Without dead ends: 1197 [2018-10-24 20:56:33,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 20:56:33,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2018-10-24 20:56:33,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1177. [2018-10-24 20:56:33,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2018-10-24 20:56:33,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1754 transitions. [2018-10-24 20:56:33,162 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1754 transitions. Word has length 189 [2018-10-24 20:56:33,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:56:33,163 INFO L481 AbstractCegarLoop]: Abstraction has 1177 states and 1754 transitions. [2018-10-24 20:56:33,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 20:56:33,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1754 transitions. [2018-10-24 20:56:33,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-24 20:56:33,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:56:33,170 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 20:56:33,170 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:56:33,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:56:33,171 INFO L82 PathProgramCache]: Analyzing trace with hash 751323799, now seen corresponding path program 1 times [2018-10-24 20:56:33,171 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:56:33,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:56:33,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:56:33,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:56:33,172 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:56:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:56:33,618 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 20:56:34,231 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 20:56:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:56:34,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 20:56:34,597 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 20:56:34,598 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-10-24 20:56:34,601 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 20:56:34,670 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 20:56:34,671 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 20:56:36,621 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 20:56:47,122 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 20:56:47,123 INFO L272 AbstractInterpreter]: Visited 128 different actions 372 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 20:56:47,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:56:47,136 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 20:56:50,007 INFO L232 lantSequenceWeakener]: Weakened 86 states. On average, predicates are now at 75.79% of their original sizes. [2018-10-24 20:56:50,007 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 20:57:01,667 INFO L413 sIntCurrentIteration]: We have 252 unified AI predicates [2018-10-24 20:57:01,667 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 20:57:01,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 20:57:01,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [13] total 30 [2018-10-24 20:57:01,668 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:57:01,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 20:57:01,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 20:57:01,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2018-10-24 20:57:01,670 INFO L87 Difference]: Start difference. First operand 1177 states and 1754 transitions. Second operand 19 states. [2018-10-24 20:59:51,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:59:51,997 INFO L93 Difference]: Finished difference Result 2813 states and 4270 transitions. [2018-10-24 20:59:51,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-24 20:59:51,998 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 253 [2018-10-24 20:59:51,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:59:52,007 INFO L225 Difference]: With dead ends: 2813 [2018-10-24 20:59:52,008 INFO L226 Difference]: Without dead ends: 1642 [2018-10-24 20:59:52,013 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 264 GetRequests, 225 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2018-10-24 20:59:52,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2018-10-24 20:59:52,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1619. [2018-10-24 20:59:52,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1619 states. [2018-10-24 20:59:52,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2225 transitions. [2018-10-24 20:59:52,120 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2225 transitions. Word has length 253 [2018-10-24 20:59:52,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:59:52,120 INFO L481 AbstractCegarLoop]: Abstraction has 1619 states and 2225 transitions. [2018-10-24 20:59:52,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-24 20:59:52,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2225 transitions. [2018-10-24 20:59:52,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-24 20:59:52,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:59:52,128 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 20:59:52,129 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:59:52,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:59:52,129 INFO L82 PathProgramCache]: Analyzing trace with hash 802766300, now seen corresponding path program 1 times [2018-10-24 20:59:52,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:59:52,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:59:52,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:59:52,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:59:52,131 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:59:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:59:52,424 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 20:59:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 20:59:52,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 20:59:52,566 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 20:59:52,567 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-10-24 20:59:52,567 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 20:59:52,573 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 20:59:52,574 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 20:59:54,603 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:00:13,187 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 21:00:13,188 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 21:00:13,189 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 21:00:13,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:00:13,190 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 21:00:13,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:00:13,203 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 21:00:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:00:13,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 21:00:13,342 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 21:00:13,543 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 21:00:13,544 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:00:13,549 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:00:13,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:00:13 BoogieIcfgContainer [2018-10-24 21:00:13,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:00:13,550 INFO L168 Benchmark]: Toolchain (without parser) took 238204.49 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 21:00:13,551 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:00:13,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 773.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:00:13,553 INFO L168 Benchmark]: Boogie Procedure Inliner took 216.43 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 725.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.5 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:00:13,554 INFO L168 Benchmark]: Boogie Preprocessor took 120.61 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:00:13,554 INFO L168 Benchmark]: RCFGBuilder took 3165.66 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 133.8 MB). Peak memory consumption was 133.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:00:13,555 INFO L168 Benchmark]: TraceAbstraction took 233922.52 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -369.7 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 21:00:13,561 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 773.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 216.43 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 725.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.5 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.61 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3165.66 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 133.8 MB). Peak memory consumption was 133.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233922.52 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -369.7 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 169]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 169). Cancelled while BasicCegarLoop was analyzing trace of length 263 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 233.8s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 181.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 455 SDtfs, 3003 SDslu, 378 SDs, 0 SdLazy, 4526 SolverSat, 924 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 288 GetRequests, 232 SyntacticMatches, 14 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 15.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1619occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 33.1s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9953200483091791 AbsIntWeakeningRatio, 0.10317460317460317 AbsIntAvgWeakeningVarsNumRemoved, 737.984126984127 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 49 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 686 NumberOfCodeBlocks, 686 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 682 ConstructedInterpolants, 0 QuantifiedInterpolants, 1030785 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 289/291 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown