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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:21:30,427 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:21:30,429 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:21:30,442 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:21:30,443 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:21:30,444 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:21:30,445 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:21:30,447 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:21:30,449 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:21:30,450 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:21:30,451 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:21:30,452 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:21:30,453 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:21:30,454 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:21:30,455 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:21:30,456 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:21:30,456 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:21:30,458 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:21:30,460 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:21:30,462 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:21:30,463 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:21:30,468 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:21:30,471 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:21:30,474 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:21:30,474 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:21:30,475 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:21:30,479 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:21:30,480 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:21:30,481 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:21:30,483 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:21:30,485 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:21:30,487 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:21:30,488 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:21:30,488 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:21:30,489 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:21:30,490 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:21:30,490 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:21:30,518 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:21:30,519 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:21:30,520 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:21:30,520 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:21:30,520 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:21:30,521 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:21:30,521 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:21:30,521 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:21:30,521 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:21:30,521 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:21:30,522 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:21:30,522 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:21:30,523 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:21:30,523 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:21:30,524 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:21:30,524 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:21:30,524 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:21:30,524 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:21:30,525 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:21:30,525 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:21:30,525 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:21:30,525 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:21:30,525 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:21:30,526 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:21:30,526 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:21:30,526 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:21:30,526 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:21:30,526 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:21:30,527 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:21:30,527 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:21:30,527 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:21:30,527 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:21:30,527 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:21:30,528 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:21:30,528 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:21:30,528 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:21:30,581 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:21:30,595 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:21:30,599 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:21:30,601 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:21:30,602 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:21:30,603 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label53_true-unreach-call.c [2018-11-07 09:21:30,686 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee5999445/29a5db1e9a1d4b9ebc9068acafdfdf38/FLAGd0e304c17 [2018-11-07 09:21:31,403 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:21:31,404 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label53_true-unreach-call.c [2018-11-07 09:21:31,430 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee5999445/29a5db1e9a1d4b9ebc9068acafdfdf38/FLAGd0e304c17 [2018-11-07 09:21:31,447 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee5999445/29a5db1e9a1d4b9ebc9068acafdfdf38 [2018-11-07 09:21:31,459 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:21:31,461 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:21:31,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:21:31,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:21:31,468 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:21:31,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:21:31" (1/1) ... [2018-11-07 09:21:31,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d100604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:31, skipping insertion in model container [2018-11-07 09:21:31,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:21:31" (1/1) ... [2018-11-07 09:21:31,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:21:31,576 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:21:32,537 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:21:32,542 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:21:32,836 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:21:32,861 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:21:32,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:32 WrapperNode [2018-11-07 09:21:32,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:21:32,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:21:32,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:21:32,863 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:21:32,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:32" (1/1) ... [2018-11-07 09:21:33,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:32" (1/1) ... [2018-11-07 09:21:33,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:21:33,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:21:33,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:21:33,069 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:21:33,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:32" (1/1) ... [2018-11-07 09:21:33,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:32" (1/1) ... [2018-11-07 09:21:33,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:32" (1/1) ... [2018-11-07 09:21:33,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:32" (1/1) ... [2018-11-07 09:21:33,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:32" (1/1) ... [2018-11-07 09:21:33,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:32" (1/1) ... [2018-11-07 09:21:33,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:32" (1/1) ... [2018-11-07 09:21:33,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:21:33,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:21:33,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:21:33,259 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:21:33,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:32" (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 09:21:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:21:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:21:33,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:21:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:21:33,340 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:21:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:21:33,340 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:21:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:21:33,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:21:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:21:33,341 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:21:39,708 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:21:39,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:21:39 BoogieIcfgContainer [2018-11-07 09:21:39,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:21:39,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:21:39,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:21:39,715 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:21:39,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:21:31" (1/3) ... [2018-11-07 09:21:39,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67529a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:21:39, skipping insertion in model container [2018-11-07 09:21:39,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:32" (2/3) ... [2018-11-07 09:21:39,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67529a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:21:39, skipping insertion in model container [2018-11-07 09:21:39,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:21:39" (3/3) ... [2018-11-07 09:21:39,720 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label53_true-unreach-call.c [2018-11-07 09:21:39,731 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:21:39,742 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:21:39,762 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:21:39,807 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:21:39,808 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:21:39,808 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:21:39,808 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:21:39,808 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:21:39,809 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:21:39,809 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:21:39,809 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:21:39,843 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 09:21:39,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-07 09:21:39,854 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:21:39,855 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] [2018-11-07 09:21:39,858 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:21:39,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:21:39,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1710890852, now seen corresponding path program 1 times [2018-11-07 09:21:39,867 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:21:39,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:39,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:21:39,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:39,922 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:21:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:21:40,346 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:21:40,463 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 09:21:40,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:21:40,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:21:40,471 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:21:40,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:21:40,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:21:40,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:21:40,504 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 09:21:43,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:21:43,967 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 09:21:43,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:21:43,970 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2018-11-07 09:21:43,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:21:43,994 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 09:21:43,995 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 09:21:44,006 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:21:44,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 09:21:44,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 09:21:44,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 09:21:44,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-11-07 09:21:44,148 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 44 [2018-11-07 09:21:44,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:21:44,148 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-11-07 09:21:44,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:21:44,149 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-11-07 09:21:44,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 09:21:44,158 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:21:44,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:21:44,162 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:21:44,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:21:44,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1470767914, now seen corresponding path program 1 times [2018-11-07 09:21:44,163 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:21:44,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:44,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:21:44,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:44,166 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:21:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:21:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:21:44,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:21:44,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:21:44,467 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:21:44,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:21:44,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:21:44,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:21:44,471 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-11-07 09:21:49,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:21:49,786 INFO L93 Difference]: Finished difference Result 2194 states and 4083 transitions. [2018-11-07 09:21:49,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:21:49,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-11-07 09:21:49,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:21:49,800 INFO L225 Difference]: With dead ends: 2194 [2018-11-07 09:21:49,800 INFO L226 Difference]: Without dead ends: 1456 [2018-11-07 09:21:49,804 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:21:49,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-11-07 09:21:49,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1436. [2018-11-07 09:21:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-11-07 09:21:49,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2550 transitions. [2018-11-07 09:21:49,873 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2550 transitions. Word has length 114 [2018-11-07 09:21:49,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:21:49,874 INFO L480 AbstractCegarLoop]: Abstraction has 1436 states and 2550 transitions. [2018-11-07 09:21:49,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:21:49,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2550 transitions. [2018-11-07 09:21:49,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 09:21:49,879 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:21:49,888 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:21:49,888 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:21:49,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:21:49,889 INFO L82 PathProgramCache]: Analyzing trace with hash -183601941, now seen corresponding path program 1 times [2018-11-07 09:21:49,889 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:21:49,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:49,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:21:49,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:49,893 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:21:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:21:50,280 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:21:50,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:21:50,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:21:50,280 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:21:50,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:21:50,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:21:50,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:21:50,282 INFO L87 Difference]: Start difference. First operand 1436 states and 2550 transitions. Second operand 6 states. [2018-11-07 09:21:54,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:21:54,485 INFO L93 Difference]: Finished difference Result 3936 states and 7024 transitions. [2018-11-07 09:21:54,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:21:54,486 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-11-07 09:21:54,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:21:54,509 INFO L225 Difference]: With dead ends: 3936 [2018-11-07 09:21:54,509 INFO L226 Difference]: Without dead ends: 2506 [2018-11-07 09:21:54,519 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 [2018-11-07 09:21:54,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2018-11-07 09:21:54,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2479. [2018-11-07 09:21:54,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2018-11-07 09:21:54,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3996 transitions. [2018-11-07 09:21:54,611 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3996 transitions. Word has length 143 [2018-11-07 09:21:54,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:21:54,612 INFO L480 AbstractCegarLoop]: Abstraction has 2479 states and 3996 transitions. [2018-11-07 09:21:54,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:21:54,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3996 transitions. [2018-11-07 09:21:54,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-07 09:21:54,620 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:21:54,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:21:54,620 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:21:54,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:21:54,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1245396135, now seen corresponding path program 1 times [2018-11-07 09:21:54,621 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:21:54,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:54,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:21:54,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:54,622 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:21:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:21:54,917 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:21:54,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:21:54,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:21:54,918 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:21:54,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:21:54,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:21:54,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:21:54,919 INFO L87 Difference]: Start difference. First operand 2479 states and 3996 transitions. Second operand 6 states. [2018-11-07 09:21:58,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:21:58,711 INFO L93 Difference]: Finished difference Result 6050 states and 9896 transitions. [2018-11-07 09:21:58,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:21:58,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-11-07 09:21:58,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:21:58,748 INFO L225 Difference]: With dead ends: 6050 [2018-11-07 09:21:58,748 INFO L226 Difference]: Without dead ends: 3577 [2018-11-07 09:21:58,760 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 [2018-11-07 09:21:58,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2018-11-07 09:21:58,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3545. [2018-11-07 09:21:58,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-11-07 09:21:58,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4965 transitions. [2018-11-07 09:21:58,874 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4965 transitions. Word has length 161 [2018-11-07 09:21:58,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:21:58,875 INFO L480 AbstractCegarLoop]: Abstraction has 3545 states and 4965 transitions. [2018-11-07 09:21:58,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:21:58,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4965 transitions. [2018-11-07 09:21:58,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-07 09:21:58,879 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:21:58,881 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:21:58,881 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:21:58,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:21:58,882 INFO L82 PathProgramCache]: Analyzing trace with hash -282881664, now seen corresponding path program 1 times [2018-11-07 09:21:58,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:21:58,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:58,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:21:58,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:58,883 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:21:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:21:59,269 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 104 proven. 35 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:21:59,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:21:59,270 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:21:59,271 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-11-07 09:21:59,273 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [431], [433], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:21:59,329 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:21:59,329 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:21:59,997 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:21:59,999 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:22:00,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:22:00,024 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:22:00,644 INFO L227 lantSequenceWeakener]: Weakened 235 states. On average, predicates are now at 77.81% of their original sizes. [2018-11-07 09:22:00,644 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:22:00,909 INFO L415 sIntCurrentIteration]: We unified 243 AI predicates to 243 [2018-11-07 09:22:00,909 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:22:00,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:22:00,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-11-07 09:22:00,911 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:22:00,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:22:00,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:22:00,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:22:00,912 INFO L87 Difference]: Start difference. First operand 3545 states and 4965 transitions. Second operand 6 states. [2018-11-07 09:23:32,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:23:32,869 INFO L93 Difference]: Finished difference Result 7424 states and 10344 transitions. [2018-11-07 09:23:32,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:23:32,869 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 244 [2018-11-07 09:23:32,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:23:32,886 INFO L225 Difference]: With dead ends: 7424 [2018-11-07 09:23:32,886 INFO L226 Difference]: Without dead ends: 3885 [2018-11-07 09:23:32,897 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 244 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:23:32,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2018-11-07 09:23:32,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3883. [2018-11-07 09:23:32,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2018-11-07 09:23:32,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 5311 transitions. [2018-11-07 09:23:32,985 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 5311 transitions. Word has length 244 [2018-11-07 09:23:32,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:23:32,986 INFO L480 AbstractCegarLoop]: Abstraction has 3883 states and 5311 transitions. [2018-11-07 09:23:32,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:23:32,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 5311 transitions. [2018-11-07 09:23:32,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-11-07 09:23:32,993 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:23:32,994 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:23:32,994 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:23:32,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:23:32,995 INFO L82 PathProgramCache]: Analyzing trace with hash 220813762, now seen corresponding path program 1 times [2018-11-07 09:23:32,995 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:23:32,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:23:32,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:23:32,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:23:32,996 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:23:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:23:33,327 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 09:23:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 183 proven. 115 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-07 09:23:33,937 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:23:33,937 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:23:33,937 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 337 with the following transitions: [2018-11-07 09:23:33,938 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [431], [433], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:23:33,944 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:23:33,945 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:23:34,224 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:23:34,224 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 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 09:23:34,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:23:34,240 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:23:34,604 INFO L227 lantSequenceWeakener]: Weakened 333 states. On average, predicates are now at 80.39% of their original sizes. [2018-11-07 09:23:34,605 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:23:34,929 INFO L415 sIntCurrentIteration]: We unified 335 AI predicates to 335 [2018-11-07 09:23:34,930 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:23:34,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:23:34,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-07 09:23:34,930 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:23:34,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:23:34,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:23:34,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:23:34,932 INFO L87 Difference]: Start difference. First operand 3883 states and 5311 transitions. Second operand 10 states. [2018-11-07 09:25:31,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:25:31,226 INFO L93 Difference]: Finished difference Result 9062 states and 12453 transitions. [2018-11-07 09:25:31,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 09:25:31,227 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 336 [2018-11-07 09:25:31,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:25:31,251 INFO L225 Difference]: With dead ends: 9062 [2018-11-07 09:25:31,251 INFO L226 Difference]: Without dead ends: 5523 [2018-11-07 09:25:31,266 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 345 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2018-11-07 09:25:31,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2018-11-07 09:25:31,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 5486. [2018-11-07 09:25:31,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5486 states. [2018-11-07 09:25:31,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 7100 transitions. [2018-11-07 09:25:31,399 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 7100 transitions. Word has length 336 [2018-11-07 09:25:31,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:25:31,400 INFO L480 AbstractCegarLoop]: Abstraction has 5486 states and 7100 transitions. [2018-11-07 09:25:31,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:25:31,400 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 7100 transitions. [2018-11-07 09:25:31,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2018-11-07 09:25:31,415 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:25:31,416 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:25:31,416 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:25:31,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:25:31,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1174694694, now seen corresponding path program 1 times [2018-11-07 09:25:31,417 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:25:31,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:25:31,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:25:31,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:25:31,419 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:25:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:25:31,948 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 214 proven. 35 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-11-07 09:25:31,949 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:25:31,949 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:25:31,949 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 485 with the following transitions: [2018-11-07 09:25:31,950 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [431], [433], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:25:31,956 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:25:31,957 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:25:32,525 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:25:32,525 INFO L272 AbstractInterpreter]: Visited 250 different actions 745 times. Merged at 8 different actions 19 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:25:32,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:25:32,564 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:25:32,564 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:25:32,565 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:25:32,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:25:32,582 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:25:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:25:32,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:25:33,064 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-11-07 09:25:33,064 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:25:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-11-07 09:25:33,664 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:25:33,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2018-11-07 09:25:33,665 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:25:33,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:25:33,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:25:33,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:25:33,666 INFO L87 Difference]: Start difference. First operand 5486 states and 7100 transitions. Second operand 3 states. Received shutdown request... [2018-11-07 09:25:34,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 09:25:34,961 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:25:34,966 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:25:34,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:25:34 BoogieIcfgContainer [2018-11-07 09:25:34,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:25:34,967 INFO L168 Benchmark]: Toolchain (without parser) took 243507.92 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -396.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 09:25:34,969 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:25:34,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1400.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-07 09:25:34,970 INFO L168 Benchmark]: Boogie Procedure Inliner took 205.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -858.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 09:25:34,971 INFO L168 Benchmark]: Boogie Preprocessor took 189.42 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:25:34,972 INFO L168 Benchmark]: RCFGBuilder took 6451.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 259.9 MB). Peak memory consumption was 259.9 MB. Max. memory is 7.1 GB. [2018-11-07 09:25:34,973 INFO L168 Benchmark]: TraceAbstraction took 235254.87 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 128.5 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 09:25:34,977 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1400.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 205.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -858.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 189.42 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6451.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 259.9 MB). Peak memory consumption was 259.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235254.87 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 128.5 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 118). Cancelled while BasicCegarLoop was constructing difference of abstraction (5486states) and FLOYD_HOARE automaton (currently 2 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (1055 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 235.1s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 226.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1653 SDtfs, 8389 SDslu, 1198 SDs, 0 SdLazy, 12034 SolverSat, 2972 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 191.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1597 GetRequests, 1543 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5486occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.6s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.997188532041018 AbsIntWeakeningRatio, 0.10034602076124567 AbsIntAvgWeakeningVarsNumRemoved, 15.813148788927336 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 118 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 2010 NumberOfCodeBlocks, 2010 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2485 ConstructedInterpolants, 0 QuantifiedInterpolants, 1780546 SizeOfPredicates, 3 NumberOfNonLiveVariables, 704 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 1556/1741 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown