java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label41_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:29:09,334 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:29:09,336 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:29:09,349 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:29:09,349 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:29:09,350 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:29:09,351 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:29:09,353 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:29:09,355 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:29:09,356 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:29:09,357 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:29:09,357 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:29:09,358 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:29:09,359 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:29:09,360 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:29:09,361 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:29:09,362 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:29:09,364 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:29:09,366 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:29:09,368 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:29:09,369 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:29:09,370 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:29:09,373 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:29:09,373 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:29:09,373 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:29:09,374 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:29:09,375 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:29:09,376 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:29:09,377 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:29:09,378 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:29:09,378 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:29:09,379 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:29:09,379 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:29:09,379 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:29:09,381 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:29:09,381 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:29:09,382 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 05:29:09,409 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:29:09,409 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:29:09,410 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:29:09,410 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:29:09,410 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:29:09,411 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:29:09,411 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 05:29:09,411 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:29:09,411 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 05:29:09,412 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:29:09,412 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 05:29:09,412 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:29:09,412 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:29:09,412 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:29:09,413 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:29:09,413 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:29:09,413 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:29:09,415 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:29:09,415 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:29:09,415 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:29:09,415 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:29:09,415 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:29:09,416 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:29:09,417 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:29:09,417 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:29:09,417 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:29:09,417 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:29:09,417 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:29:09,418 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:29:09,418 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:29:09,418 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:29:09,419 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:29:09,419 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:29:09,419 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:29:09,419 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 05:29:09,419 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 05:29:09,473 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:29:09,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:29:09,496 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:29:09,498 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:29:09,498 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:29:09,499 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label41_false-unreach-call_false-termination.c [2018-10-27 05:29:09,570 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/29fc74c0a/c4177075a2374e7cb03b90380bafd1a3/FLAGf989079b6 [2018-10-27 05:29:10,199 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:29:10,200 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label41_false-unreach-call_false-termination.c [2018-10-27 05:29:10,225 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/29fc74c0a/c4177075a2374e7cb03b90380bafd1a3/FLAGf989079b6 [2018-10-27 05:29:10,248 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/29fc74c0a/c4177075a2374e7cb03b90380bafd1a3 [2018-10-27 05:29:10,262 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:29:10,265 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:29:10,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:29:10,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:29:10,270 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:29:10,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:29:10" (1/1) ... [2018-10-27 05:29:10,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128929bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:10, skipping insertion in model container [2018-10-27 05:29:10,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:29:10" (1/1) ... [2018-10-27 05:29:10,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:29:10,373 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:29:10,872 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:29:10,877 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:29:11,020 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:29:11,038 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:29:11,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:11 WrapperNode [2018-10-27 05:29:11,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:29:11,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:29:11,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:29:11,041 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:29:11,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:11" (1/1) ... [2018-10-27 05:29:11,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:11" (1/1) ... [2018-10-27 05:29:11,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:29:11,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:29:11,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:29:11,291 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:29:11,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:11" (1/1) ... [2018-10-27 05:29:11,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:11" (1/1) ... [2018-10-27 05:29:11,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:11" (1/1) ... [2018-10-27 05:29:11,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:11" (1/1) ... [2018-10-27 05:29:11,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:11" (1/1) ... [2018-10-27 05:29:11,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:11" (1/1) ... [2018-10-27 05:29:11,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:11" (1/1) ... [2018-10-27 05:29:11,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:29:11,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:29:11,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:29:11,402 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:29:11,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:29:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:29:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:29:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 05:29:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 05:29:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:29:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:29:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:29:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:29:15,421 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:29:15,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:29:15 BoogieIcfgContainer [2018-10-27 05:29:15,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:29:15,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:29:15,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:29:15,429 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:29:15,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:29:10" (1/3) ... [2018-10-27 05:29:15,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5de1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:29:15, skipping insertion in model container [2018-10-27 05:29:15,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:29:11" (2/3) ... [2018-10-27 05:29:15,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5de1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:29:15, skipping insertion in model container [2018-10-27 05:29:15,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:29:15" (3/3) ... [2018-10-27 05:29:15,433 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label41_false-unreach-call_false-termination.c [2018-10-27 05:29:15,445 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:29:15,454 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 05:29:15,473 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 05:29:15,520 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:29:15,520 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:29:15,520 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:29:15,521 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:29:15,521 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:29:15,521 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:29:15,521 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:29:15,521 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:29:15,550 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 05:29:15,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-27 05:29:15,559 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:29:15,561 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:29:15,565 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:29:15,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:15,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1981251204, now seen corresponding path program 1 times [2018-10-27 05:29:15,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:29:15,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:15,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:15,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:15,621 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:29:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:15,946 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 05:29:16,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:29:16,051 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:29:16,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:29:16,052 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:29:16,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:29:16,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:29:16,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:29:16,078 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-27 05:29:18,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:29:18,048 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-27 05:29:18,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:29:18,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-10-27 05:29:18,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:29:18,073 INFO L225 Difference]: With dead ends: 691 [2018-10-27 05:29:18,073 INFO L226 Difference]: Without dead ends: 434 [2018-10-27 05:29:18,082 INFO L605 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 [2018-10-27 05:29:18,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-27 05:29:18,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-27 05:29:18,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-27 05:29:18,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-27 05:29:18,179 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 14 [2018-10-27 05:29:18,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:29:18,179 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-27 05:29:18,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:29:18,180 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-27 05:29:18,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-27 05:29:18,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:29:18,191 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 05:29:18,192 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:29:18,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:18,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1394388241, now seen corresponding path program 1 times [2018-10-27 05:29:18,193 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:29:18,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:18,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:18,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:18,195 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:29:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:18,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:29:18,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:29:18,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 05:29:18,604 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:29:18,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:29:18,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:29:18,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:29:18,608 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-27 05:29:20,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:29:20,580 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-27 05:29:20,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:29:20,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-10-27 05:29:20,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:29:20,590 INFO L225 Difference]: With dead ends: 1062 [2018-10-27 05:29:20,590 INFO L226 Difference]: Without dead ends: 634 [2018-10-27 05:29:20,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:29:20,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-27 05:29:20,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-27 05:29:20,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-27 05:29:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-27 05:29:20,636 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 101 [2018-10-27 05:29:20,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:29:20,637 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-27 05:29:20,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:29:20,638 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-27 05:29:20,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-27 05:29:20,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:29:20,641 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 05:29:20,641 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:29:20,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:20,642 INFO L82 PathProgramCache]: Analyzing trace with hash -425574092, now seen corresponding path program 1 times [2018-10-27 05:29:20,642 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:29:20,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:20,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:20,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:20,643 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:29:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:20,874 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:29:20,874 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:29:20,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:29:20,875 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:29:20,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:29:20,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:29:20,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:29:20,876 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 3 states. [2018-10-27 05:29:24,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:29:24,228 INFO L93 Difference]: Finished difference Result 1797 states and 3018 transitions. [2018-10-27 05:29:24,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:29:24,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2018-10-27 05:29:24,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:29:24,241 INFO L225 Difference]: With dead ends: 1797 [2018-10-27 05:29:24,242 INFO L226 Difference]: Without dead ends: 1178 [2018-10-27 05:29:24,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:29:24,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2018-10-27 05:29:24,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1178. [2018-10-27 05:29:24,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2018-10-27 05:29:24,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1732 transitions. [2018-10-27 05:29:24,317 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1732 transitions. Word has length 110 [2018-10-27 05:29:24,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:29:24,318 INFO L481 AbstractCegarLoop]: Abstraction has 1178 states and 1732 transitions. [2018-10-27 05:29:24,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:29:24,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1732 transitions. [2018-10-27 05:29:24,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-27 05:29:24,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:29:24,339 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-27 05:29:24,340 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:29:24,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:24,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1659653320, now seen corresponding path program 1 times [2018-10-27 05:29:24,341 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:29:24,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:24,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:24,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:24,342 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:29:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-27 05:29:24,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:29:24,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:29:24,637 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:29:24,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:29:24,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:29:24,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:29:24,641 INFO L87 Difference]: Start difference. First operand 1178 states and 1732 transitions. Second operand 3 states. [2018-10-27 05:29:27,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:29:27,025 INFO L93 Difference]: Finished difference Result 2903 states and 4462 transitions. [2018-10-27 05:29:27,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:29:27,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2018-10-27 05:29:27,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:29:27,044 INFO L225 Difference]: With dead ends: 2903 [2018-10-27 05:29:27,044 INFO L226 Difference]: Without dead ends: 1731 [2018-10-27 05:29:27,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:29:27,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-27 05:29:27,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-27 05:29:27,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-27 05:29:27,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2449 transitions. [2018-10-27 05:29:27,112 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2449 transitions. Word has length 214 [2018-10-27 05:29:27,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:29:27,113 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2449 transitions. [2018-10-27 05:29:27,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:29:27,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2449 transitions. [2018-10-27 05:29:27,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-27 05:29:27,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:29:27,123 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 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] [2018-10-27 05:29:27,123 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:29:27,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:27,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1017345513, now seen corresponding path program 1 times [2018-10-27 05:29:27,124 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:29:27,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:27,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:27,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:27,125 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:29:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:27,648 WARN L179 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-27 05:29:27,997 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 05:29:28,537 WARN L179 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2018-10-27 05:29:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 14 proven. 101 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:29:28,640 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:29:28,640 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:29:28,641 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-10-27 05:29:28,643 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:29:28,696 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:29:28,697 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:29:32,992 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:29:32,993 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 05:29:33,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:33,008 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:29:36,174 INFO L227 lantSequenceWeakener]: Weakened 224 states. On average, predicates are now at 77.23% of their original sizes. [2018-10-27 05:29:36,175 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:29:36,425 INFO L415 sIntCurrentIteration]: We unified 232 AI predicates to 232 [2018-10-27 05:29:36,426 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:29:36,430 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:29:36,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-27 05:29:36,431 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:29:36,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:29:36,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:29:36,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:29:36,432 INFO L87 Difference]: Start difference. First operand 1731 states and 2449 transitions. Second operand 6 states. [2018-10-27 05:30:01,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:30:01,675 INFO L93 Difference]: Finished difference Result 3641 states and 5191 transitions. [2018-10-27 05:30:01,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 05:30:01,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 233 [2018-10-27 05:30:01,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:30:01,686 INFO L225 Difference]: With dead ends: 3641 [2018-10-27 05:30:01,687 INFO L226 Difference]: Without dead ends: 1916 [2018-10-27 05:30:01,695 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 233 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 05:30:01,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-10-27 05:30:01,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-10-27 05:30:01,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-10-27 05:30:01,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2640 transitions. [2018-10-27 05:30:01,748 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2640 transitions. Word has length 233 [2018-10-27 05:30:01,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:30:01,748 INFO L481 AbstractCegarLoop]: Abstraction has 1914 states and 2640 transitions. [2018-10-27 05:30:01,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:30:01,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2640 transitions. [2018-10-27 05:30:01,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-27 05:30:01,756 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:30:01,757 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:30:01,757 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:30:01,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:01,758 INFO L82 PathProgramCache]: Analyzing trace with hash 931974248, now seen corresponding path program 1 times [2018-10-27 05:30:01,758 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:30:01,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:01,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:01,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:01,760 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:30:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:02,288 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:30:02,489 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 05:30:02,719 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:30:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 109 proven. 183 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:30:03,298 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:03,299 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:30:03,299 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 319 with the following transitions: [2018-10-27 05:30:03,299 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:30:03,306 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:30:03,307 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:30:07,623 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:30:07,623 INFO L272 AbstractInterpreter]: Visited 123 different actions 238 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:30:07,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:07,631 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:30:07,632 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:07,632 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:30:07,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:07,644 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:30:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:07,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:30:08,168 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:30:08,566 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:30:08,925 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 236 proven. 53 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-27 05:30:08,926 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:30:09,629 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-27 05:30:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 31 proven. 261 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:30:10,239 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:30:10,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2018-10-27 05:30:10,240 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:30:10,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 05:30:10,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 05:30:10,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2018-10-27 05:30:10,245 INFO L87 Difference]: Start difference. First operand 1914 states and 2640 transitions. Second operand 15 states. [2018-10-27 05:30:16,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:30:16,831 INFO L93 Difference]: Finished difference Result 5119 states and 7150 transitions. [2018-10-27 05:30:16,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-27 05:30:16,831 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 318 [2018-10-27 05:30:16,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:30:16,850 INFO L225 Difference]: With dead ends: 5119 [2018-10-27 05:30:16,850 INFO L226 Difference]: Without dead ends: 3195 [2018-10-27 05:30:16,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 644 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2018-10-27 05:30:16,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2018-10-27 05:30:16,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 2921. [2018-10-27 05:30:16,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2921 states. [2018-10-27 05:30:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 3617 transitions. [2018-10-27 05:30:16,957 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 3617 transitions. Word has length 318 [2018-10-27 05:30:16,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:30:16,958 INFO L481 AbstractCegarLoop]: Abstraction has 2921 states and 3617 transitions. [2018-10-27 05:30:16,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-27 05:30:16,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 3617 transitions. [2018-10-27 05:30:16,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-10-27 05:30:16,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:30:16,970 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:30:16,970 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:30:16,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:16,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1252708484, now seen corresponding path program 1 times [2018-10-27 05:30:16,971 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:30:16,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:16,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:16,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:16,972 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:30:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:17,509 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:30:17,678 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 05:30:17,882 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:30:18,219 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-27 05:30:18,709 WARN L179 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-10-27 05:30:19,530 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 34 proven. 305 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:30:19,530 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:19,530 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:30:19,531 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 345 with the following transitions: [2018-10-27 05:30:19,531 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:30:19,538 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:30:19,538 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:30:24,488 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:30:24,489 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:30:24,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:24,496 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:30:27,068 INFO L227 lantSequenceWeakener]: Weakened 341 states. On average, predicates are now at 77.32% of their original sizes. [2018-10-27 05:30:27,068 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:30:27,468 INFO L415 sIntCurrentIteration]: We unified 343 AI predicates to 343 [2018-10-27 05:30:27,468 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:30:27,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:30:27,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2018-10-27 05:30:27,469 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:30:27,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:30:27,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:30:27,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:30:27,470 INFO L87 Difference]: Start difference. First operand 2921 states and 3617 transitions. Second operand 10 states. [2018-10-27 05:30:46,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:30:46,984 INFO L93 Difference]: Finished difference Result 5841 states and 7248 transitions. [2018-10-27 05:30:46,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 05:30:46,984 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 344 [2018-10-27 05:30:46,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:30:46,999 INFO L225 Difference]: With dead ends: 5841 [2018-10-27 05:30:46,999 INFO L226 Difference]: Without dead ends: 3109 [2018-10-27 05:30:47,010 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 351 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-10-27 05:30:47,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2018-10-27 05:30:47,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 3106. [2018-10-27 05:30:47,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3106 states. [2018-10-27 05:30:47,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 3803 transitions. [2018-10-27 05:30:47,083 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 3803 transitions. Word has length 344 [2018-10-27 05:30:47,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:30:47,084 INFO L481 AbstractCegarLoop]: Abstraction has 3106 states and 3803 transitions. [2018-10-27 05:30:47,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:30:47,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 3803 transitions. [2018-10-27 05:30:47,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-10-27 05:30:47,099 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:30:47,099 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:30:47,100 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:30:47,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:47,100 INFO L82 PathProgramCache]: Analyzing trace with hash 700870408, now seen corresponding path program 1 times [2018-10-27 05:30:47,100 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:30:47,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:47,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:47,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:47,102 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:30:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 260 proven. 105 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-10-27 05:30:47,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:47,942 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:30:47,943 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 455 with the following transitions: [2018-10-27 05:30:47,943 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:30:47,947 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:30:47,947 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:30:57,382 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:30:57,382 INFO L272 AbstractInterpreter]: Visited 123 different actions 368 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 05:30:57,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:57,403 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:30:58,847 INFO L227 lantSequenceWeakener]: Weakened 451 states. On average, predicates are now at 79.99% of their original sizes. [2018-10-27 05:30:58,847 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:30:58,922 INFO L415 sIntCurrentIteration]: We unified 453 AI predicates to 453 [2018-10-27 05:30:58,922 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:30:58,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:30:58,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-10-27 05:30:58,923 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:30:58,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 05:30:58,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 05:30:58,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:30:58,924 INFO L87 Difference]: Start difference. First operand 3106 states and 3803 transitions. Second operand 9 states. [2018-10-27 05:31:19,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:31:19,329 INFO L93 Difference]: Finished difference Result 7087 states and 8828 transitions. [2018-10-27 05:31:19,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 05:31:19,329 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 454 [2018-10-27 05:31:19,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:31:19,350 INFO L225 Difference]: With dead ends: 7087 [2018-10-27 05:31:19,351 INFO L226 Difference]: Without dead ends: 4355 [2018-10-27 05:31:19,364 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 460 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-10-27 05:31:19,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4355 states. [2018-10-27 05:31:19,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4355 to 4329. [2018-10-27 05:31:19,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4329 states. [2018-10-27 05:31:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4329 states to 4329 states and 5151 transitions. [2018-10-27 05:31:19,466 INFO L78 Accepts]: Start accepts. Automaton has 4329 states and 5151 transitions. Word has length 454 [2018-10-27 05:31:19,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:31:19,467 INFO L481 AbstractCegarLoop]: Abstraction has 4329 states and 5151 transitions. [2018-10-27 05:31:19,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 05:31:19,467 INFO L276 IsEmpty]: Start isEmpty. Operand 4329 states and 5151 transitions. [2018-10-27 05:31:19,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2018-10-27 05:31:19,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:31:19,484 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:31:19,485 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:31:19,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:19,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1214354999, now seen corresponding path program 1 times [2018-10-27 05:31:19,486 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:31:19,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:19,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:19,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:19,487 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:31:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:20,883 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 262 proven. 311 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-10-27 05:31:20,884 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:20,884 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:31:20,884 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 522 with the following transitions: [2018-10-27 05:31:20,885 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:31:20,889 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:31:20,889 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:31:26,878 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:31:26,879 INFO L272 AbstractInterpreter]: Visited 191 different actions 763 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 05:31:26,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:26,887 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:31:26,887 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:26,887 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:31:26,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:26,895 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:31:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:27,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:31:27,284 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 350 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-10-27 05:31:27,285 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:31:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 350 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-10-27 05:31:27,680 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:31:27,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 17 [2018-10-27 05:31:27,680 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:31:27,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-27 05:31:27,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-27 05:31:27,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2018-10-27 05:31:27,683 INFO L87 Difference]: Start difference. First operand 4329 states and 5151 transitions. Second operand 16 states. [2018-10-27 05:31:36,593 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2018-10-27 05:31:39,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:31:39,176 INFO L93 Difference]: Finished difference Result 12290 states and 15677 transitions. [2018-10-27 05:31:39,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-27 05:31:39,177 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 521 [2018-10-27 05:31:39,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:31:39,215 INFO L225 Difference]: With dead ends: 12290 [2018-10-27 05:31:39,216 INFO L226 Difference]: Without dead ends: 7866 [2018-10-27 05:31:39,243 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1156 GetRequests, 1079 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1905 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1184, Invalid=4668, Unknown=0, NotChecked=0, Total=5852 [2018-10-27 05:31:39,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7866 states. [2018-10-27 05:31:39,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7866 to 7536. [2018-10-27 05:31:39,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7536 states. [2018-10-27 05:31:39,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7536 states to 7536 states and 9171 transitions. [2018-10-27 05:31:39,434 INFO L78 Accepts]: Start accepts. Automaton has 7536 states and 9171 transitions. Word has length 521 [2018-10-27 05:31:39,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:31:39,434 INFO L481 AbstractCegarLoop]: Abstraction has 7536 states and 9171 transitions. [2018-10-27 05:31:39,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-27 05:31:39,435 INFO L276 IsEmpty]: Start isEmpty. Operand 7536 states and 9171 transitions. [2018-10-27 05:31:39,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2018-10-27 05:31:39,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:31:39,461 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:31:39,461 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:31:39,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:39,462 INFO L82 PathProgramCache]: Analyzing trace with hash 283713559, now seen corresponding path program 1 times [2018-10-27 05:31:39,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:31:39,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:39,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:39,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:39,464 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:31:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:40,060 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 05:31:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 366 proven. 471 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2018-10-27 05:31:41,134 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:41,134 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:31:41,134 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 540 with the following transitions: [2018-10-27 05:31:41,134 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:31:41,137 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:31:41,137 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:31:56,140 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:31:56,140 INFO L272 AbstractInterpreter]: Visited 125 different actions 504 times. Merged at 10 different actions 38 times. Never widened. Found 10 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 05:31:56,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:56,146 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:31:56,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:56,146 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:31:56,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:56,156 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:31:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:56,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:31:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 740 proven. 2 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2018-10-27 05:31:56,701 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:31:57,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 360 proven. 105 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-10-27 05:31:57,300 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:31:57,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 14 [2018-10-27 05:31:57,300 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:31:57,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-27 05:31:57,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-27 05:31:57,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-10-27 05:31:57,302 INFO L87 Difference]: Start difference. First operand 7536 states and 9171 transitions. Second operand 13 states. [2018-10-27 05:32:00,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:32:00,745 INFO L93 Difference]: Finished difference Result 15239 states and 19159 transitions. [2018-10-27 05:32:00,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-27 05:32:00,746 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 539 [2018-10-27 05:32:00,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:32:00,803 INFO L225 Difference]: With dead ends: 15239 [2018-10-27 05:32:00,804 INFO L226 Difference]: Without dead ends: 7874 [2018-10-27 05:32:00,831 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1107 GetRequests, 1083 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2018-10-27 05:32:00,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7874 states. [2018-10-27 05:32:01,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7874 to 7716. [2018-10-27 05:32:01,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7716 states. [2018-10-27 05:32:01,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7716 states to 7716 states and 9087 transitions. [2018-10-27 05:32:01,032 INFO L78 Accepts]: Start accepts. Automaton has 7716 states and 9087 transitions. Word has length 539 [2018-10-27 05:32:01,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:32:01,033 INFO L481 AbstractCegarLoop]: Abstraction has 7716 states and 9087 transitions. [2018-10-27 05:32:01,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-27 05:32:01,033 INFO L276 IsEmpty]: Start isEmpty. Operand 7716 states and 9087 transitions. [2018-10-27 05:32:01,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2018-10-27 05:32:01,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:32:01,052 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:32:01,052 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:32:01,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:01,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1995580207, now seen corresponding path program 1 times [2018-10-27 05:32:01,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:32:01,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:01,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:01,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:01,056 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:32:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1499 backedges. 485 proven. 656 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2018-10-27 05:32:02,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:02,788 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:32:02,788 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 640 with the following transitions: [2018-10-27 05:32:02,788 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:32:02,791 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:32:02,791 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:32:13,017 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:32:13,017 INFO L272 AbstractInterpreter]: Visited 125 different actions 496 times. Merged at 9 different actions 32 times. Never widened. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 05:32:13,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:13,023 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:32:13,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:13,023 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:32:13,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:13,031 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:32:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:13,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:32:14,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1499 backedges. 1050 proven. 2 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2018-10-27 05:32:14,329 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:32:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1499 backedges. 298 proven. 144 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2018-10-27 05:32:15,044 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:32:15,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5] total 21 [2018-10-27 05:32:15,044 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:32:15,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-27 05:32:15,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-27 05:32:15,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2018-10-27 05:32:15,046 INFO L87 Difference]: Start difference. First operand 7716 states and 9087 transitions. Second operand 19 states. [2018-10-27 05:32:17,384 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2018-10-27 05:32:21,439 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 24 [2018-10-27 05:32:24,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:32:24,699 INFO L93 Difference]: Finished difference Result 18486 states and 22784 transitions. [2018-10-27 05:32:24,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-27 05:32:24,700 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 639 [2018-10-27 05:32:24,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:32:24,742 INFO L225 Difference]: With dead ends: 18486 [2018-10-27 05:32:24,742 INFO L226 Difference]: Without dead ends: 10564 [2018-10-27 05:32:24,773 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1359 GetRequests, 1299 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=724, Invalid=2936, Unknown=0, NotChecked=0, Total=3660 [2018-10-27 05:32:24,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10564 states. [2018-10-27 05:32:24,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10564 to 9204. [2018-10-27 05:32:24,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9204 states. [2018-10-27 05:32:24,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9204 states to 9204 states and 10540 transitions. [2018-10-27 05:32:24,978 INFO L78 Accepts]: Start accepts. Automaton has 9204 states and 10540 transitions. Word has length 639 [2018-10-27 05:32:24,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:32:24,979 INFO L481 AbstractCegarLoop]: Abstraction has 9204 states and 10540 transitions. [2018-10-27 05:32:24,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-27 05:32:24,980 INFO L276 IsEmpty]: Start isEmpty. Operand 9204 states and 10540 transitions. [2018-10-27 05:32:24,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2018-10-27 05:32:24,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:32:24,994 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 05:32:24,994 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:32:24,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:24,995 INFO L82 PathProgramCache]: Analyzing trace with hash 136634335, now seen corresponding path program 1 times [2018-10-27 05:32:24,995 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:32:24,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:24,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:24,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:24,996 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:32:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:25,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1164 backedges. 393 proven. 119 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-10-27 05:32:25,714 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:25,714 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:32:25,714 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 654 with the following transitions: [2018-10-27 05:32:25,714 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:32:25,717 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:32:25,717 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:32:31,501 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:32:31,501 INFO L272 AbstractInterpreter]: Visited 192 different actions 772 times. Merged at 10 different actions 40 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 05:32:31,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:31,508 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:32:31,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:31,508 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:32:31,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:31,516 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:32:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:31,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:32:31,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1164 backedges. 829 proven. 2 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2018-10-27 05:32:31,874 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:32:32,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1164 backedges. 393 proven. 119 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-10-27 05:32:32,257 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:32:32,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-27 05:32:32,257 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:32:32,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 05:32:32,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 05:32:32,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:32:32,259 INFO L87 Difference]: Start difference. First operand 9204 states and 10540 transitions. Second operand 7 states. [2018-10-27 05:32:35,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:32:35,274 INFO L93 Difference]: Finished difference Result 24998 states and 33417 transitions. [2018-10-27 05:32:35,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 05:32:35,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 653 [2018-10-27 05:32:35,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:32:35,477 INFO L225 Difference]: With dead ends: 24998 [2018-10-27 05:32:35,477 INFO L226 Difference]: Without dead ends: 15985 [2018-10-27 05:32:35,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1323 GetRequests, 1309 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-10-27 05:32:35,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15985 states. [2018-10-27 05:32:35,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15985 to 15638. [2018-10-27 05:32:35,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15638 states. [2018-10-27 05:32:35,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15638 states to 15638 states and 18408 transitions. [2018-10-27 05:32:35,927 INFO L78 Accepts]: Start accepts. Automaton has 15638 states and 18408 transitions. Word has length 653 [2018-10-27 05:32:35,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:32:35,928 INFO L481 AbstractCegarLoop]: Abstraction has 15638 states and 18408 transitions. [2018-10-27 05:32:35,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 05:32:35,929 INFO L276 IsEmpty]: Start isEmpty. Operand 15638 states and 18408 transitions. [2018-10-27 05:32:35,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2018-10-27 05:32:35,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:32:35,948 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:32:35,948 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:32:35,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:35,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1310599695, now seen corresponding path program 1 times [2018-10-27 05:32:35,949 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:32:35,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:35,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:35,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:35,950 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:32:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:36,391 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-27 05:32:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1790 backedges. 57 proven. 105 refuted. 0 times theorem prover too weak. 1628 trivial. 0 not checked. [2018-10-27 05:32:36,977 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:36,978 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:32:36,978 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 814 with the following transitions: [2018-10-27 05:32:36,978 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [854], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:32:36,982 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:32:36,982 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:32:42,953 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:32:42,953 INFO L272 AbstractInterpreter]: Visited 193 different actions 776 times. Merged at 10 different actions 40 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 05:32:42,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:42,960 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:32:42,960 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:42,960 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:32:42,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:42,970 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:32:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:43,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:32:43,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1790 backedges. 1119 proven. 2 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2018-10-27 05:32:43,803 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:32:44,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1790 backedges. 568 proven. 119 refuted. 0 times theorem prover too weak. 1103 trivial. 0 not checked. [2018-10-27 05:32:44,277 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:32:44,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-10-27 05:32:44,277 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:32:44,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 05:32:44,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 05:32:44,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:32:44,279 INFO L87 Difference]: Start difference. First operand 15638 states and 18408 transitions. Second operand 8 states. [2018-10-27 05:32:49,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:32:49,185 INFO L93 Difference]: Finished difference Result 33501 states and 40348 transitions. [2018-10-27 05:32:49,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-27 05:32:49,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 813 [2018-10-27 05:32:49,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:32:49,248 INFO L225 Difference]: With dead ends: 33501 [2018-10-27 05:32:49,248 INFO L226 Difference]: Without dead ends: 18054 [2018-10-27 05:32:49,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1672 GetRequests, 1642 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870 [2018-10-27 05:32:49,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18054 states. [2018-10-27 05:32:49,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18054 to 17673. [2018-10-27 05:32:49,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17673 states. [2018-10-27 05:32:49,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17673 states to 17673 states and 20304 transitions. [2018-10-27 05:32:49,683 INFO L78 Accepts]: Start accepts. Automaton has 17673 states and 20304 transitions. Word has length 813 [2018-10-27 05:32:49,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:32:49,684 INFO L481 AbstractCegarLoop]: Abstraction has 17673 states and 20304 transitions. [2018-10-27 05:32:49,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 05:32:49,684 INFO L276 IsEmpty]: Start isEmpty. Operand 17673 states and 20304 transitions. [2018-10-27 05:32:49,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2018-10-27 05:32:49,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:32:49,708 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:32:49,708 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:32:49,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:49,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1139493305, now seen corresponding path program 1 times [2018-10-27 05:32:49,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:32:49,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:49,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:49,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:49,710 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:32:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 436 proven. 1181 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2018-10-27 05:32:52,306 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:52,307 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:32:52,307 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 924 with the following transitions: [2018-10-27 05:32:52,307 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [754], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:32:52,311 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:32:52,311 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:32:58,621 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:32:58,621 INFO L272 AbstractInterpreter]: Visited 194 different actions 783 times. Merged at 11 different actions 43 times. Widened at 1 different actions 1 times. Found 13 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 05:32:58,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:58,644 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:32:58,644 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:58,644 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:32:58,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:58,652 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:32:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:58,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:32:59,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 1667 proven. 2 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2018-10-27 05:32:59,575 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:32:59,734 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 18 Received shutdown request... [2018-10-27 05:32:59,820 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 05:33:00,021 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:33:00,022 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 05:33:00,027 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 05:33:00,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:33:00 BoogieIcfgContainer [2018-10-27 05:33:00,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:33:00,028 INFO L168 Benchmark]: Toolchain (without parser) took 229764.93 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 2.3 GB in the end (delta: -888.5 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-27 05:33:00,029 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-27 05:33:00,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 773.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-27 05:33:00,030 INFO L168 Benchmark]: Boogie Procedure Inliner took 249.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -823.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2018-10-27 05:33:00,031 INFO L168 Benchmark]: Boogie Preprocessor took 110.42 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-27 05:33:00,032 INFO L168 Benchmark]: RCFGBuilder took 4020.86 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 132.2 MB). Peak memory consumption was 132.2 MB. Max. memory is 7.1 GB. [2018-10-27 05:33:00,032 INFO L168 Benchmark]: TraceAbstraction took 224603.54 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -253.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-27 05:33:00,037 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 773.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 249.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -823.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.42 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4020.86 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 132.2 MB). Peak memory consumption was 132.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224603.54 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -253.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 25). Cancelled while BasicCegarLoop was analyzing trace of length 924 with TraceHistMax 8,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 224.5s OverallTime, 14 OverallIterations, 8 TraceHistogramMax, 114.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2331 SDtfs, 20996 SDslu, 2953 SDs, 0 SdLazy, 28838 SolverSat, 4445 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81.4s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 8364 GetRequests, 8075 SyntacticMatches, 14 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3578 ImplicationChecksByTransitivity, 14.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17673occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 72.4s AbstIntTime, 10 AbstIntIterations, 3 AbstIntStrong, 0.9971582518221704 AbsIntWeakeningRatio, 0.0933852140077821 AbsIntAvgWeakeningVarsNumRemoved, 15.90466926070039 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 13 MinimizatonAttempts, 2890 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 17.4s InterpolantComputationTime, 8436 NumberOfCodeBlocks, 8436 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 11894 ConstructedInterpolants, 0 QuantifiedInterpolants, 28589293 SizeOfPredicates, 16 NumberOfNonLiveVariables, 5227 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 17440/20609 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown