java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label39_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 11:50:06,367 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 11:50:06,368 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 11:50:06,381 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 11:50:06,382 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 11:50:06,383 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 11:50:06,384 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 11:50:06,386 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 11:50:06,387 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 11:50:06,388 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 11:50:06,389 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 11:50:06,389 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 11:50:06,390 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 11:50:06,391 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 11:50:06,392 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 11:50:06,393 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 11:50:06,394 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 11:50:06,396 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 11:50:06,398 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 11:50:06,400 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 11:50:06,401 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 11:50:06,402 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 11:50:06,404 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 11:50:06,404 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 11:50:06,405 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 11:50:06,406 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 11:50:06,407 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 11:50:06,408 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 11:50:06,408 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 11:50:06,411 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 11:50:06,411 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 11:50:06,412 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 11:50:06,412 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 11:50:06,412 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 11:50:06,413 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 11:50:06,414 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 11:50:06,414 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 11:50:06,440 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 11:50:06,440 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 11:50:06,442 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 11:50:06,442 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 11:50:06,442 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 11:50:06,442 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 11:50:06,443 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 11:50:06,443 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 11:50:06,443 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 11:50:06,444 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 11:50:06,444 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 11:50:06,444 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 11:50:06,445 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 11:50:06,445 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 11:50:06,445 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 11:50:06,445 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 11:50:06,445 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 11:50:06,445 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 11:50:06,447 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 11:50:06,447 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 11:50:06,448 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 11:50:06,448 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 11:50:06,448 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 11:50:06,448 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 11:50:06,448 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 11:50:06,449 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 11:50:06,449 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 11:50:06,449 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 11:50:06,449 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 11:50:06,450 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 11:50:06,450 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 11:50:06,450 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 11:50:06,450 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 11:50:06,450 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 11:50:06,503 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 11:50:06,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 11:50:06,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 11:50:06,528 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 11:50:06,528 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 11:50:06,529 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label39_false-unreach-call.c [2018-11-07 11:50:06,599 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/245977bca/0246412d7c404926b8012f197bd47447/FLAG50091e526 [2018-11-07 11:50:07,412 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 11:50:07,413 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label39_false-unreach-call.c [2018-11-07 11:50:07,447 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/245977bca/0246412d7c404926b8012f197bd47447/FLAG50091e526 [2018-11-07 11:50:07,469 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/245977bca/0246412d7c404926b8012f197bd47447 [2018-11-07 11:50:07,481 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 11:50:07,484 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 11:50:07,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 11:50:07,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 11:50:07,490 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 11:50:07,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:50:07" (1/1) ... [2018-11-07 11:50:07,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ddd7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:50:07, skipping insertion in model container [2018-11-07 11:50:07,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:50:07" (1/1) ... [2018-11-07 11:50:07,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 11:50:07,688 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 11:50:09,108 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 11:50:09,112 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 11:50:09,733 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 11:50:09,774 INFO L193 MainTranslator]: Completed translation [2018-11-07 11:50:09,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:50:09 WrapperNode [2018-11-07 11:50:09,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 11:50:09,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 11:50:09,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 11:50:09,776 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 11:50:09,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:50:09" (1/1) ... [2018-11-07 11:50:10,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:50:09" (1/1) ... [2018-11-07 11:50:10,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 11:50:10,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 11:50:10,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 11:50:10,134 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 11:50:10,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:50:09" (1/1) ... [2018-11-07 11:50:10,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:50:09" (1/1) ... [2018-11-07 11:50:10,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:50:09" (1/1) ... [2018-11-07 11:50:10,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:50:09" (1/1) ... [2018-11-07 11:50:10,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:50:09" (1/1) ... [2018-11-07 11:50:10,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:50:09" (1/1) ... [2018-11-07 11:50:10,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:50:09" (1/1) ... [2018-11-07 11:50:10,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 11:50:10,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 11:50:10,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 11:50:10,385 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 11:50:10,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:50:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 11:50:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 11:50:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 11:50:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 11:50:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 11:50:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 11:50:10,455 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 11:50:10,455 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 11:50:10,455 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 11:50:10,455 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 11:50:10,455 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 11:50:10,455 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 11:50:10,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 11:50:10,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 11:50:10,457 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 11:50:10,457 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 11:50:19,460 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 11:50:19,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:50:19 BoogieIcfgContainer [2018-11-07 11:50:19,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 11:50:19,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 11:50:19,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 11:50:19,465 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 11:50:19,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:50:07" (1/3) ... [2018-11-07 11:50:19,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5982cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:50:19, skipping insertion in model container [2018-11-07 11:50:19,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:50:09" (2/3) ... [2018-11-07 11:50:19,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5982cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:50:19, skipping insertion in model container [2018-11-07 11:50:19,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:50:19" (3/3) ... [2018-11-07 11:50:19,469 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label39_false-unreach-call.c [2018-11-07 11:50:19,480 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 11:50:19,491 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 11:50:19,508 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 11:50:19,555 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 11:50:19,555 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 11:50:19,556 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 11:50:19,556 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 11:50:19,556 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 11:50:19,556 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 11:50:19,556 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 11:50:19,556 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 11:50:19,597 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 11:50:19,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-07 11:50:19,605 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:50:19,606 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:50:19,609 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:50:19,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:50:19,617 INFO L82 PathProgramCache]: Analyzing trace with hash 491754076, now seen corresponding path program 1 times [2018-11-07 11:50:19,620 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:50:19,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:50:19,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:50:19,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:50:19,677 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:50:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:50:20,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:50:20,109 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:50:20,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 11:50:20,110 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:50:20,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 11:50:20,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 11:50:20,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:50:20,142 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-11-07 11:50:32,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:50:32,036 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-11-07 11:50:32,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 11:50:32,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-11-07 11:50:32,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:50:32,077 INFO L225 Difference]: With dead ends: 3234 [2018-11-07 11:50:32,078 INFO L226 Difference]: Without dead ends: 2388 [2018-11-07 11:50:32,089 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:50:32,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-11-07 11:50:32,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 1604. [2018-11-07 11:50:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 11:50:32,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2600 transitions. [2018-11-07 11:50:32,255 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2600 transitions. Word has length 28 [2018-11-07 11:50:32,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:50:32,257 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2600 transitions. [2018-11-07 11:50:32,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 11:50:32,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2600 transitions. [2018-11-07 11:50:32,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-07 11:50:32,265 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:50:32,267 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:50:32,267 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:50:32,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:50:32,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1894764938, now seen corresponding path program 1 times [2018-11-07 11:50:32,268 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:50:32,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:50:32,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:50:32,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:50:32,271 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:50:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:50:32,602 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:50:32,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:50:32,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 11:50:32,603 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:50:32,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 11:50:32,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 11:50:32,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 11:50:32,606 INFO L87 Difference]: Start difference. First operand 1604 states and 2600 transitions. Second operand 5 states. [2018-11-07 11:50:43,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:50:43,485 INFO L93 Difference]: Finished difference Result 4873 states and 7923 transitions. [2018-11-07 11:50:43,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 11:50:43,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2018-11-07 11:50:43,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:50:43,507 INFO L225 Difference]: With dead ends: 4873 [2018-11-07 11:50:43,507 INFO L226 Difference]: Without dead ends: 3275 [2018-11-07 11:50:43,512 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:50:43,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2018-11-07 11:50:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3241. [2018-11-07 11:50:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2018-11-07 11:50:43,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 4816 transitions. [2018-11-07 11:50:43,628 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 4816 transitions. Word has length 108 [2018-11-07 11:50:43,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:50:43,628 INFO L480 AbstractCegarLoop]: Abstraction has 3241 states and 4816 transitions. [2018-11-07 11:50:43,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 11:50:43,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 4816 transitions. [2018-11-07 11:50:43,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-07 11:50:43,633 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:50:43,634 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:50:43,634 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:50:43,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:50:43,635 INFO L82 PathProgramCache]: Analyzing trace with hash 379884815, now seen corresponding path program 1 times [2018-11-07 11:50:43,635 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:50:43,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:50:43,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:50:43,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:50:43,636 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:50:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:50:43,898 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:50:43,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:50:43,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:50:43,899 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:50:43,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:50:43,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:50:43,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:50:43,900 INFO L87 Difference]: Start difference. First operand 3241 states and 4816 transitions. Second operand 6 states. [2018-11-07 11:50:54,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:50:54,659 INFO L93 Difference]: Finished difference Result 12867 states and 19653 transitions. [2018-11-07 11:50:54,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 11:50:54,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-11-07 11:50:54,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:50:54,713 INFO L225 Difference]: With dead ends: 12867 [2018-11-07 11:50:54,713 INFO L226 Difference]: Without dead ends: 9632 [2018-11-07 11:50:54,732 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 11:50:54,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9632 states. [2018-11-07 11:50:54,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9632 to 9564. [2018-11-07 11:50:54,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9564 states. [2018-11-07 11:50:54,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9564 states to 9564 states and 13820 transitions. [2018-11-07 11:50:54,981 INFO L78 Accepts]: Start accepts. Automaton has 9564 states and 13820 transitions. Word has length 137 [2018-11-07 11:50:54,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:50:54,982 INFO L480 AbstractCegarLoop]: Abstraction has 9564 states and 13820 transitions. [2018-11-07 11:50:54,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:50:54,982 INFO L276 IsEmpty]: Start isEmpty. Operand 9564 states and 13820 transitions. [2018-11-07 11:50:54,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-07 11:50:54,989 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:50:54,989 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:50:54,992 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:50:54,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:50:54,992 INFO L82 PathProgramCache]: Analyzing trace with hash 918827063, now seen corresponding path program 1 times [2018-11-07 11:50:54,992 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:50:54,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:50:54,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:50:54,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:50:54,996 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:50:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:50:55,331 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 11:50:55,519 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:50:55,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:50:55,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:50:55,520 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:50:55,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:50:55,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:50:55,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:50:55,522 INFO L87 Difference]: Start difference. First operand 9564 states and 13820 transitions. Second operand 6 states. [2018-11-07 11:51:02,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:51:02,932 INFO L93 Difference]: Finished difference Result 25925 states and 39265 transitions. [2018-11-07 11:51:02,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 11:51:02,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-11-07 11:51:02,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:51:03,012 INFO L225 Difference]: With dead ends: 25925 [2018-11-07 11:51:03,013 INFO L226 Difference]: Without dead ends: 16367 [2018-11-07 11:51:03,047 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 11:51:03,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16367 states. [2018-11-07 11:51:03,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16367 to 16193. [2018-11-07 11:51:03,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16193 states. [2018-11-07 11:51:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16193 states to 16193 states and 23401 transitions. [2018-11-07 11:51:03,476 INFO L78 Accepts]: Start accepts. Automaton has 16193 states and 23401 transitions. Word has length 149 [2018-11-07 11:51:03,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:51:03,476 INFO L480 AbstractCegarLoop]: Abstraction has 16193 states and 23401 transitions. [2018-11-07 11:51:03,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:51:03,477 INFO L276 IsEmpty]: Start isEmpty. Operand 16193 states and 23401 transitions. [2018-11-07 11:51:03,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-07 11:51:03,480 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:51:03,480 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:51:03,480 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:51:03,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:51:03,484 INFO L82 PathProgramCache]: Analyzing trace with hash -379444241, now seen corresponding path program 1 times [2018-11-07 11:51:03,484 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:51:03,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:51:03,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:51:03,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:51:03,486 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:51:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:51:03,775 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 11:51:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:51:04,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:51:04,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:51:04,115 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:51:04,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:51:04,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:51:04,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:51:04,116 INFO L87 Difference]: Start difference. First operand 16193 states and 23401 transitions. Second operand 6 states. [2018-11-07 11:51:10,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:51:10,675 INFO L93 Difference]: Finished difference Result 39139 states and 58294 transitions. [2018-11-07 11:51:10,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 11:51:10,676 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-11-07 11:51:10,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:51:10,776 INFO L225 Difference]: With dead ends: 39139 [2018-11-07 11:51:10,776 INFO L226 Difference]: Without dead ends: 22952 [2018-11-07 11:51:10,835 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 11:51:10,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22952 states. [2018-11-07 11:51:11,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22952 to 22807. [2018-11-07 11:51:11,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22807 states. [2018-11-07 11:51:11,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22807 states to 22807 states and 31278 transitions. [2018-11-07 11:51:11,345 INFO L78 Accepts]: Start accepts. Automaton has 22807 states and 31278 transitions. Word has length 153 [2018-11-07 11:51:11,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:51:11,345 INFO L480 AbstractCegarLoop]: Abstraction has 22807 states and 31278 transitions. [2018-11-07 11:51:11,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:51:11,345 INFO L276 IsEmpty]: Start isEmpty. Operand 22807 states and 31278 transitions. [2018-11-07 11:51:11,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-07 11:51:11,350 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:51:11,350 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:51:11,350 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:51:11,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:51:11,351 INFO L82 PathProgramCache]: Analyzing trace with hash 96690322, now seen corresponding path program 1 times [2018-11-07 11:51:11,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:51:11,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:51:11,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:51:11,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:51:11,352 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:51:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:51:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:51:11,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:51:11,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 11:51:11,604 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:51:11,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 11:51:11,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 11:51:11,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:51:11,605 INFO L87 Difference]: Start difference. First operand 22807 states and 31278 transitions. Second operand 4 states. [2018-11-07 11:51:19,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:51:19,968 INFO L93 Difference]: Finished difference Result 55125 states and 77472 transitions. [2018-11-07 11:51:19,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 11:51:19,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2018-11-07 11:51:19,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:51:20,101 INFO L225 Difference]: With dead ends: 55125 [2018-11-07 11:51:20,101 INFO L226 Difference]: Without dead ends: 32324 [2018-11-07 11:51:20,156 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:51:20,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32324 states. [2018-11-07 11:51:20,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32324 to 32320. [2018-11-07 11:51:20,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32320 states. [2018-11-07 11:51:20,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32320 states to 32320 states and 44145 transitions. [2018-11-07 11:51:20,789 INFO L78 Accepts]: Start accepts. Automaton has 32320 states and 44145 transitions. Word has length 174 [2018-11-07 11:51:20,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:51:20,790 INFO L480 AbstractCegarLoop]: Abstraction has 32320 states and 44145 transitions. [2018-11-07 11:51:20,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 11:51:20,790 INFO L276 IsEmpty]: Start isEmpty. Operand 32320 states and 44145 transitions. [2018-11-07 11:51:20,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-07 11:51:20,797 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:51:20,798 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:51:20,798 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:51:20,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:51:20,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1795048897, now seen corresponding path program 1 times [2018-11-07 11:51:20,798 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:51:20,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:51:20,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:51:20,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:51:20,807 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:51:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:51:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:51:21,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:51:21,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 11:51:21,049 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:51:21,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 11:51:21,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 11:51:21,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:51:21,050 INFO L87 Difference]: Start difference. First operand 32320 states and 44145 transitions. Second operand 4 states. [2018-11-07 11:51:29,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:51:29,269 INFO L93 Difference]: Finished difference Result 77130 states and 106644 transitions. [2018-11-07 11:51:29,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 11:51:29,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2018-11-07 11:51:29,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:51:29,412 INFO L225 Difference]: With dead ends: 77130 [2018-11-07 11:51:29,412 INFO L226 Difference]: Without dead ends: 44816 [2018-11-07 11:51:29,491 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:51:29,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44816 states. [2018-11-07 11:51:30,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44816 to 44803. [2018-11-07 11:51:30,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44803 states. [2018-11-07 11:51:30,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44803 states to 44803 states and 56594 transitions. [2018-11-07 11:51:30,312 INFO L78 Accepts]: Start accepts. Automaton has 44803 states and 56594 transitions. Word has length 177 [2018-11-07 11:51:30,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:51:30,312 INFO L480 AbstractCegarLoop]: Abstraction has 44803 states and 56594 transitions. [2018-11-07 11:51:30,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 11:51:30,313 INFO L276 IsEmpty]: Start isEmpty. Operand 44803 states and 56594 transitions. [2018-11-07 11:51:30,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-11-07 11:51:30,344 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:51:30,345 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:51:30,345 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:51:30,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:51:30,346 INFO L82 PathProgramCache]: Analyzing trace with hash -252379448, now seen corresponding path program 1 times [2018-11-07 11:51:30,346 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:51:30,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:51:30,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:51:30,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:51:30,347 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:51:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:51:30,758 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 11:51:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 11:51:30,867 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 11:51:30,868 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 11:51:30,869 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 343 with the following transitions: [2018-11-07 11:51:30,872 INFO L202 CegarAbsIntRunner]: [0], [1], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1063], [1867], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1991], [1993], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2997], [3001], [3005], [3009], [3013], [3017], [3021], [3025], [3029], [3033], [3037], [3041], [3045], [3049], [3053], [3057], [3061], [3065], [3069], [3073], [3077], [3081], [3085], [3089], [3093], [3097], [3101], [3105], [3109], [3113], [3117], [3121], [3125], [3129], [3133], [3137], [3141], [3145], [3149], [3153], [3157], [3161], [3165], [3169], [3173], [3177], [3181], [3185], [3189], [3193], [3197], [3201], [3205], [3209], [3213], [3217], [3221], [3225], [3229], [3233], [3237], [3239], [3240], [3244], [3248], [3254], [3258], [3260], [3269], [3270], [3271], [3272], [3273], [3275], [3276] [2018-11-07 11:51:30,946 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 11:51:30,947 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 11:51:32,336 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 11:51:36,014 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 11:51:36,016 INFO L272 AbstractInterpreter]: Visited 321 different actions 950 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 11:51:36,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:51:36,053 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 11:51:37,643 INFO L227 lantSequenceWeakener]: Weakened 262 states. On average, predicates are now at 75.3% of their original sizes. [2018-11-07 11:51:37,643 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 11:51:38,818 INFO L415 sIntCurrentIteration]: We unified 341 AI predicates to 341 [2018-11-07 11:51:38,819 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 11:51:38,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 11:51:38,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [4] total 24 [2018-11-07 11:51:38,821 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:51:38,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 11:51:38,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 11:51:38,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2018-11-07 11:51:38,822 INFO L87 Difference]: Start difference. First operand 44803 states and 56594 transitions. Second operand 22 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown