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/Problem12_label55_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:19:48,306 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:19:48,308 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:19:48,320 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:19:48,321 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:19:48,322 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:19:48,323 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:19:48,325 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:19:48,327 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:19:48,328 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:19:48,329 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:19:48,329 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:19:48,330 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:19:48,331 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:19:48,332 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:19:48,333 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:19:48,334 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:19:48,336 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:19:48,338 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:19:48,340 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:19:48,341 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:19:48,342 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:19:48,344 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:19:48,345 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:19:48,345 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:19:48,346 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:19:48,347 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:19:48,347 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:19:48,348 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:19:48,349 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:19:48,349 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:19:48,350 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:19:48,350 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:19:48,351 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:19:48,351 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:19:48,352 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:19:48,352 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:19:48,367 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:19:48,368 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:19:48,369 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:19:48,369 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:19:48,369 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:19:48,369 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:19:48,369 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:19:48,370 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:19:48,370 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:19:48,370 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:19:48,370 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:19:48,370 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:19:48,371 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:19:48,371 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:19:48,372 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:19:48,372 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:19:48,372 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:19:48,372 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:19:48,372 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:19:48,373 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:19:48,373 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:19:48,373 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:19:48,373 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:19:48,373 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:19:48,374 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:19:48,374 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:19:48,374 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:19:48,374 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:19:48,374 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:19:48,375 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:19:48,375 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:19:48,375 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:19:48,375 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:19:48,375 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:19:48,375 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:19:48,420 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:19:48,433 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:19:48,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:19:48,439 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:19:48,439 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:19:48,440 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label55_false-unreach-call.c [2018-11-12 16:19:48,500 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/618c2328c/5efa1f2a6130428aa641f90b07e26123/FLAGbb52c80f1 [2018-11-12 16:19:49,359 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:19:49,360 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label55_false-unreach-call.c [2018-11-12 16:19:49,395 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/618c2328c/5efa1f2a6130428aa641f90b07e26123/FLAGbb52c80f1 [2018-11-12 16:19:49,415 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/618c2328c/5efa1f2a6130428aa641f90b07e26123 [2018-11-12 16:19:49,428 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:19:49,432 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:19:49,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:19:49,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:19:49,441 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:19:49,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:19:49" (1/1) ... [2018-11-12 16:19:49,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f1cbd05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:49, skipping insertion in model container [2018-11-12 16:19:49,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:19:49" (1/1) ... [2018-11-12 16:19:49,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:19:49,626 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:19:51,018 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:19:51,028 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:19:51,752 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:19:51,788 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:19:51,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:51 WrapperNode [2018-11-12 16:19:51,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:19:51,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:19:51,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:19:51,791 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:19:52,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:51" (1/1) ... [2018-11-12 16:19:52,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:51" (1/1) ... [2018-11-12 16:19:52,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:19:52,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:19:52,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:19:52,124 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:19:52,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:51" (1/1) ... [2018-11-12 16:19:52,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:51" (1/1) ... [2018-11-12 16:19:52,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:51" (1/1) ... [2018-11-12 16:19:52,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:51" (1/1) ... [2018-11-12 16:19:52,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:51" (1/1) ... [2018-11-12 16:19:52,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:51" (1/1) ... [2018-11-12 16:19:52,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:51" (1/1) ... [2018-11-12 16:19:52,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:19:52,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:19:52,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:19:52,404 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:19:52,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:19:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:19:52,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:19:52,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:19:52,487 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 16:19:52,488 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 16:19:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:19:52,488 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:19:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:19:52,488 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:19:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:19:52,490 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:19:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:19:52,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:19:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:19:52,492 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:20:02,461 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:20:02,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:20:02 BoogieIcfgContainer [2018-11-12 16:20:02,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:20:02,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:20:02,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:20:02,466 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:20:02,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:19:49" (1/3) ... [2018-11-12 16:20:02,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1de857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:20:02, skipping insertion in model container [2018-11-12 16:20:02,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:51" (2/3) ... [2018-11-12 16:20:02,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1de857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:20:02, skipping insertion in model container [2018-11-12 16:20:02,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:20:02" (3/3) ... [2018-11-12 16:20:02,471 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label55_false-unreach-call.c [2018-11-12 16:20:02,482 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:20:02,494 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:20:02,514 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:20:02,582 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:20:02,583 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:20:02,583 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:20:02,583 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:20:02,583 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:20:02,584 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:20:02,584 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:20:02,584 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:20:02,646 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-12 16:20:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-12 16:20:02,653 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:20:02,654 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:20:02,657 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:20:02,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:20:02,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2129497701, now seen corresponding path program 1 times [2018-11-12 16:20:02,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:20:02,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:20:02,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:20:02,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:20:02,726 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:20:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:20:03,040 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-12 16:20:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:20:03,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:20:03,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:20:03,055 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:20:03,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:20:03,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:20:03,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:20:03,082 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-11-12 16:20:15,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:20:15,649 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-11-12 16:20:15,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:20:15,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-11-12 16:20:15,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:20:15,693 INFO L225 Difference]: With dead ends: 3234 [2018-11-12 16:20:15,693 INFO L226 Difference]: Without dead ends: 2388 [2018-11-12 16:20:15,709 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 [2018-11-12 16:20:15,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-11-12 16:20:15,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-11-12 16:20:15,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-11-12 16:20:15,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3845 transitions. [2018-11-12 16:20:15,913 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3845 transitions. Word has length 15 [2018-11-12 16:20:15,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:20:15,913 INFO L480 AbstractCegarLoop]: Abstraction has 2388 states and 3845 transitions. [2018-11-12 16:20:15,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:20:15,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3845 transitions. [2018-11-12 16:20:15,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-11-12 16:20:15,919 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:20:15,920 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:20:15,920 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:20:15,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:20:15,920 INFO L82 PathProgramCache]: Analyzing trace with hash -135376495, now seen corresponding path program 1 times [2018-11-12 16:20:15,921 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:20:15,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:20:15,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:20:15,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:20:15,922 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:20:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:20:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:20:16,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:20:16,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:20:16,480 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:20:16,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:20:16,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:20:16,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:20:16,483 INFO L87 Difference]: Start difference. First operand 2388 states and 3845 transitions. Second operand 6 states. [2018-11-12 16:20:30,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:20:30,258 INFO L93 Difference]: Finished difference Result 9463 states and 15573 transitions. [2018-11-12 16:20:30,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:20:30,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2018-11-12 16:20:30,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:20:30,311 INFO L225 Difference]: With dead ends: 9463 [2018-11-12 16:20:30,311 INFO L226 Difference]: Without dead ends: 7081 [2018-11-12 16:20:30,324 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 [2018-11-12 16:20:30,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2018-11-12 16:20:30,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 7037. [2018-11-12 16:20:30,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7037 states. [2018-11-12 16:20:30,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 10229 transitions. [2018-11-12 16:20:30,543 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 10229 transitions. Word has length 96 [2018-11-12 16:20:30,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:20:30,544 INFO L480 AbstractCegarLoop]: Abstraction has 7037 states and 10229 transitions. [2018-11-12 16:20:30,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:20:30,544 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 10229 transitions. [2018-11-12 16:20:30,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-12 16:20:30,551 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:20:30,552 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:20:30,552 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:20:30,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:20:30,552 INFO L82 PathProgramCache]: Analyzing trace with hash -87022815, now seen corresponding path program 1 times [2018-11-12 16:20:30,553 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:20:30,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:20:30,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:20:30,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:20:30,554 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:20:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:20:30,825 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:20:30,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:20:30,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:20:30,826 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:20:30,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:20:30,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:20:30,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:20:30,827 INFO L87 Difference]: Start difference. First operand 7037 states and 10229 transitions. Second operand 6 states. [2018-11-12 16:20:40,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:20:40,579 INFO L93 Difference]: Finished difference Result 23489 states and 35291 transitions. [2018-11-12 16:20:40,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:20:40,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-11-12 16:20:40,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:20:40,679 INFO L225 Difference]: With dead ends: 23489 [2018-11-12 16:20:40,680 INFO L226 Difference]: Without dead ends: 16458 [2018-11-12 16:20:40,721 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:20:40,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16458 states. [2018-11-12 16:20:41,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16458 to 16369. [2018-11-12 16:20:41,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16369 states. [2018-11-12 16:20:41,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16369 states to 16369 states and 22454 transitions. [2018-11-12 16:20:41,154 INFO L78 Accepts]: Start accepts. Automaton has 16369 states and 22454 transitions. Word has length 104 [2018-11-12 16:20:41,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:20:41,155 INFO L480 AbstractCegarLoop]: Abstraction has 16369 states and 22454 transitions. [2018-11-12 16:20:41,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:20:41,155 INFO L276 IsEmpty]: Start isEmpty. Operand 16369 states and 22454 transitions. [2018-11-12 16:20:41,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-12 16:20:41,159 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:20:41,159 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:20:41,160 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:20:41,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:20:41,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1280943624, now seen corresponding path program 1 times [2018-11-12 16:20:41,160 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:20:41,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:20:41,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:20:41,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:20:41,162 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:20:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:20:41,437 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:20:41,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:20:41,788 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:20:41,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:20:41,789 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:20:41,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:20:41,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:20:41,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:20:41,790 INFO L87 Difference]: Start difference. First operand 16369 states and 22454 transitions. Second operand 6 states. [2018-11-12 16:20:51,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:20:51,280 INFO L93 Difference]: Finished difference Result 42327 states and 60125 transitions. [2018-11-12 16:20:51,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:20:51,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-11-12 16:20:51,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:20:51,370 INFO L225 Difference]: With dead ends: 42327 [2018-11-12 16:20:51,370 INFO L226 Difference]: Without dead ends: 25964 [2018-11-12 16:20:51,439 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:20:51,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25964 states. [2018-11-12 16:20:51,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25964 to 25854. [2018-11-12 16:20:51,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25854 states. [2018-11-12 16:20:52,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25854 states to 25854 states and 33993 transitions. [2018-11-12 16:20:52,006 INFO L78 Accepts]: Start accepts. Automaton has 25854 states and 33993 transitions. Word has length 115 [2018-11-12 16:20:52,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:20:52,007 INFO L480 AbstractCegarLoop]: Abstraction has 25854 states and 33993 transitions. [2018-11-12 16:20:52,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:20:52,007 INFO L276 IsEmpty]: Start isEmpty. Operand 25854 states and 33993 transitions. [2018-11-12 16:20:52,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-12 16:20:52,013 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:20:52,013 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:20:52,013 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:20:52,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:20:52,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1522182260, now seen corresponding path program 1 times [2018-11-12 16:20:52,018 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:20:52,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:20:52,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:20:52,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:20:52,019 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:20:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:20:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:20:52,468 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:20:52,468 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:20:52,469 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 173 with the following transitions: [2018-11-12 16:20:52,471 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1887], [1889], [1892], [1900], [1908], [1916], [1924], [1932], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2404], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 16:20:52,520 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:20:52,521 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:20:53,389 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:20:53,392 INFO L272 AbstractInterpreter]: Visited 89 different actions 171 times. Merged at 4 different actions 4 times. Never widened. Performed 1740 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1740 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 16:20:53,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:20:53,438 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:20:54,075 INFO L227 lantSequenceWeakener]: Weakened 169 states. On average, predicates are now at 74.89% of their original sizes. [2018-11-12 16:20:54,076 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:20:55,007 INFO L415 sIntCurrentIteration]: We unified 171 AI predicates to 171 [2018-11-12 16:20:55,007 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:20:55,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:20:55,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 16:20:55,008 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:20:55,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 16:20:55,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 16:20:55,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:20:55,010 INFO L87 Difference]: Start difference. First operand 25854 states and 33993 transitions. Second operand 11 states. [2018-11-12 16:21:04,589 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:22:20,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:22:20,813 INFO L93 Difference]: Finished difference Result 54012 states and 70870 transitions. [2018-11-12 16:22:20,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 16:22:20,814 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 172 [2018-11-12 16:22:20,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:22:20,935 INFO L225 Difference]: With dead ends: 54012 [2018-11-12 16:22:20,936 INFO L226 Difference]: Without dead ends: 28164 [2018-11-12 16:22:20,978 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 180 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-12 16:22:21,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28164 states. [2018-11-12 16:22:21,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28164 to 28161. [2018-11-12 16:22:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28161 states. [2018-11-12 16:22:21,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28161 states to 28161 states and 36330 transitions. [2018-11-12 16:22:21,531 INFO L78 Accepts]: Start accepts. Automaton has 28161 states and 36330 transitions. Word has length 172 [2018-11-12 16:22:21,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:22:21,532 INFO L480 AbstractCegarLoop]: Abstraction has 28161 states and 36330 transitions. [2018-11-12 16:22:21,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 16:22:21,532 INFO L276 IsEmpty]: Start isEmpty. Operand 28161 states and 36330 transitions. [2018-11-12 16:22:21,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-12 16:22:21,536 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:22:21,536 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:22:21,537 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:22:21,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:22:21,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1383567076, now seen corresponding path program 1 times [2018-11-12 16:22:21,537 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:22:21,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:22:21,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:22:21,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:22:21,539 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:22:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:22:21,928 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:22:22,364 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-12 16:22:22,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:22:22,365 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:22:22,365 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-11-12 16:22:22,366 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1887], [1889], [1892], [1900], [1908], [1916], [1924], [1932], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2396], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2680], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 16:22:22,379 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:22:22,379 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:22:22,548 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:22:22,917 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:22:22,918 INFO L272 AbstractInterpreter]: Visited 158 different actions 310 times. Merged at 5 different actions 5 times. Never widened. Performed 4812 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4812 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 16:22:22,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:22:22,952 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:22:23,629 INFO L227 lantSequenceWeakener]: Weakened 43 states. On average, predicates are now at 75.21% of their original sizes. [2018-11-12 16:22:23,630 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:22:24,435 INFO L415 sIntCurrentIteration]: We unified 243 AI predicates to 243 [2018-11-12 16:22:24,435 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:22:24,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:22:24,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [6] total 28 [2018-11-12 16:22:24,436 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:22:24,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-12 16:22:24,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-12 16:22:24,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2018-11-12 16:22:24,437 INFO L87 Difference]: Start difference. First operand 28161 states and 36330 transitions. Second operand 24 states. Received shutdown request... [2018-11-12 16:23:16,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-12 16:23:16,967 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:23:16,973 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:23:16,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:23:16 BoogieIcfgContainer [2018-11-12 16:23:16,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:23:16,974 INFO L168 Benchmark]: Toolchain (without parser) took 207545.45 ms. Allocated memory was 1.5 GB in the beginning and 6.0 GB in the end (delta: 4.4 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-12 16:23:16,975 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-11-12 16:23:16,976 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2356.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-12 16:23:16,977 INFO L168 Benchmark]: Boogie Procedure Inliner took 332.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 778.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. [2018-11-12 16:23:16,978 INFO L168 Benchmark]: Boogie Preprocessor took 279.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2018-11-12 16:23:16,979 INFO L168 Benchmark]: RCFGBuilder took 10057.73 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 161.0 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -167.8 MB). Peak memory consumption was 669.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:23:16,980 INFO L168 Benchmark]: TraceAbstraction took 194511.19 ms. Allocated memory was 2.5 GB in the beginning and 6.0 GB in the end (delta: 3.5 GB). Free memory was 2.4 GB in the beginning and 3.3 GB in the end (delta: -930.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-12 16:23:16,985 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 2356.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 332.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 778.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 279.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10057.73 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 161.0 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -167.8 MB). Peak memory consumption was 669.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 194511.19 ms. Allocated memory was 2.5 GB in the beginning and 6.0 GB in the end (delta: 3.5 GB). Free memory was 2.4 GB in the beginning and 3.3 GB in the end (delta: -930.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 36]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 36). Cancelled while BasicCegarLoop was constructing difference of abstraction (28161states) and FLOYD_HOARE automaton (currently 27 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (12435 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 194.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 184.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1894 SDtfs, 21868 SDslu, 1569 SDs, 0 SdLazy, 38688 SolverSat, 6710 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 474 GetRequests, 393 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28161occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9966855270683248 AbsIntWeakeningRatio, 0.13043478260869565 AbsIntAvgWeakeningVarsNumRemoved, 16.5 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 246 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 746 NumberOfCodeBlocks, 746 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 740 ConstructedInterpolants, 0 QuantifiedInterpolants, 467541 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 200/211 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown