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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:17:12,441 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:17:12,443 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:17:12,460 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:17:12,460 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:17:12,462 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:17:12,463 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:17:12,466 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:17:12,469 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:17:12,470 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:17:12,472 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:17:12,472 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:17:12,473 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:17:12,476 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:17:12,483 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:17:12,487 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:17:12,488 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:17:12,493 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:17:12,495 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:17:12,499 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:17:12,500 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:17:12,503 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:17:12,508 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:17:12,509 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:17:12,509 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:17:12,510 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:17:12,511 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:17:12,515 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:17:12,516 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:17:12,518 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:17:12,518 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:17:12,519 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:17:12,519 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:17:12,520 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:17:12,521 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:17:12,522 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:17:12,522 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.epf [2018-11-07 14:17:12,552 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:17:12,553 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:17:12,554 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:17:12,554 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:17:12,554 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:17:12,554 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:17:12,554 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:17:12,555 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:17:12,555 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:17:12,556 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:17:12,556 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:17:12,556 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:17:12,557 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:17:12,557 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:17:12,557 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:17:12,557 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:17:12,558 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:17:12,559 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:17:12,559 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:17:12,560 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:17:12,560 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:17:12,560 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:17:12,560 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:17:12,560 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:17:12,561 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:17:12,561 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:17:12,561 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:17:12,562 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:17:12,562 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:17:12,562 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:17:12,562 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:17:12,562 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:17:12,563 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:17:12,563 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:17:12,612 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:17:12,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:17:12,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:17:12,637 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:17:12,637 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:17:12,638 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label27_true-unreach-call.c [2018-11-07 14:17:12,705 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d82327e59/79e79740a4c64400801cb192c3967c28/FLAG479df1308 [2018-11-07 14:17:13,301 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:17:13,302 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label27_true-unreach-call.c [2018-11-07 14:17:13,327 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d82327e59/79e79740a4c64400801cb192c3967c28/FLAG479df1308 [2018-11-07 14:17:13,347 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d82327e59/79e79740a4c64400801cb192c3967c28 [2018-11-07 14:17:13,361 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:17:13,363 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:17:13,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:17:13,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:17:13,369 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:17:13,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:17:13" (1/1) ... [2018-11-07 14:17:13,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e4bd03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:13, skipping insertion in model container [2018-11-07 14:17:13,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:17:13" (1/1) ... [2018-11-07 14:17:13,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:17:13,444 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:17:13,850 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:17:13,855 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:17:14,020 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:17:14,053 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:17:14,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:14 WrapperNode [2018-11-07 14:17:14,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:17:14,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:17:14,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:17:14,055 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:17:14,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:14" (1/1) ... [2018-11-07 14:17:14,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:14" (1/1) ... [2018-11-07 14:17:14,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:17:14,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:17:14,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:17:14,199 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:17:14,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:14" (1/1) ... [2018-11-07 14:17:14,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:14" (1/1) ... [2018-11-07 14:17:14,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:14" (1/1) ... [2018-11-07 14:17:14,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:14" (1/1) ... [2018-11-07 14:17:14,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:14" (1/1) ... [2018-11-07 14:17:14,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:14" (1/1) ... [2018-11-07 14:17:14,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:14" (1/1) ... [2018-11-07 14:17:14,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:17:14,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:17:14,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:17:14,313 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:17:14,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:14" (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 14:17:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:17:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:17:14,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:17:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:17:14,384 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:17:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:17:14,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:17:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:17:14,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:17:17,563 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:17:17,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:17:17 BoogieIcfgContainer [2018-11-07 14:17:17,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:17:17,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:17:17,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:17:17,572 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:17:17,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:17:13" (1/3) ... [2018-11-07 14:17:17,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d1e732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:17:17, skipping insertion in model container [2018-11-07 14:17:17,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:14" (2/3) ... [2018-11-07 14:17:17,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d1e732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:17:17, skipping insertion in model container [2018-11-07 14:17:17,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:17:17" (3/3) ... [2018-11-07 14:17:17,578 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label27_true-unreach-call.c [2018-11-07 14:17:17,590 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:17:17,606 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:17:17,627 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:17:17,666 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:17:17,666 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:17:17,666 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:17:17,666 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:17:17,667 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:17:17,667 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:17:17,667 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:17:17,668 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:17:17,708 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 14:17:17,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-07 14:17:17,724 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:17:17,726 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, 1, 1, 1, 1, 1] [2018-11-07 14:17:17,730 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:17:17,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:17:17,736 INFO L82 PathProgramCache]: Analyzing trace with hash 51771233, now seen corresponding path program 1 times [2018-11-07 14:17:17,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:17:17,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:17:17,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:17:17,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:17:17,789 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:17:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:17:18,285 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 14:17:18,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:17:18,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:17:18,289 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:17:18,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:17:18,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:17:18,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:17:18,317 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-11-07 14:17:20,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:17:20,717 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-11-07 14:17:20,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:17:20,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2018-11-07 14:17:20,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:17:20,741 INFO L225 Difference]: With dead ends: 737 [2018-11-07 14:17:20,741 INFO L226 Difference]: Without dead ends: 515 [2018-11-07 14:17:20,750 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 14:17:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-11-07 14:17:20,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 356. [2018-11-07 14:17:20,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-07 14:17:20,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 613 transitions. [2018-11-07 14:17:20,838 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 613 transitions. Word has length 67 [2018-11-07 14:17:20,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:17:20,839 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 613 transitions. [2018-11-07 14:17:20,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:17:20,839 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 613 transitions. [2018-11-07 14:17:20,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-07 14:17:20,848 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:17:20,849 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, 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] [2018-11-07 14:17:20,849 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:17:20,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:17:20,850 INFO L82 PathProgramCache]: Analyzing trace with hash -316431117, now seen corresponding path program 1 times [2018-11-07 14:17:20,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:17:20,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:17:20,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:17:20,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:17:20,852 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:17:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:17:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 14:17:21,317 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:17:21,318 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:17:21,319 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 139 with the following transitions: [2018-11-07 14:17:21,321 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], [401], [409], [417], [425], [433], [437], [439], [442], [450], [458], [466], [474], [482], [490], [495], [498], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 14:17:21,366 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:17:21,366 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:17:21,826 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:17:22,202 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:17:22,204 INFO L272 AbstractInterpreter]: Visited 78 different actions 221 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 14:17:22,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:17:22,243 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:17:22,669 INFO L227 lantSequenceWeakener]: Weakened 66 states. On average, predicates are now at 76.69% of their original sizes. [2018-11-07 14:17:22,670 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:17:23,591 INFO L415 sIntCurrentIteration]: We unified 137 AI predicates to 137 [2018-11-07 14:17:23,592 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:17:23,593 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:17:23,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [4] total 19 [2018-11-07 14:17:23,594 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:17:23,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 14:17:23,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 14:17:23,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-11-07 14:17:23,597 INFO L87 Difference]: Start difference. First operand 356 states and 613 transitions. Second operand 17 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown