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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label37_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:30:42,296 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:30:42,298 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:30:42,313 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:30:42,314 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:30:42,315 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:30:42,317 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:30:42,319 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:30:42,322 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:30:42,331 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:30:42,332 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:30:42,332 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:30:42,333 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:30:42,335 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:30:42,337 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:30:42,338 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:30:42,338 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:30:42,340 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:30:42,342 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:30:42,345 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:30:42,347 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:30:42,348 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:30:42,351 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:30:42,362 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:30:42,363 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:30:42,363 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:30:42,364 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:30:42,364 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 22:30:42,391 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:30:42,391 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:30:42,392 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:30:42,392 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:30:42,393 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:30:42,393 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:30:42,393 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:30:42,393 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:30:42,393 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:30:42,394 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:30:42,394 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:30:42,394 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:30:42,395 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:30:42,396 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:30:42,396 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:30:42,396 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:30:42,396 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:30:42,396 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:30:42,397 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:30:42,398 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:30:42,398 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:30:42,398 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:30:42,398 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:30:42,398 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:30:42,399 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:30:42,399 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:30:42,399 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:30:42,399 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:30:42,399 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:30:42,401 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:30:42,401 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:30:42,401 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:30:42,401 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:30:42,401 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:30:42,448 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:30:42,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:30:42,473 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:30:42,474 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:30:42,475 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:30:42,475 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label37_true-unreach-call.c [2018-10-24 22:30:42,539 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/83d1b886c/65a186a4b18f4025bcdc50aa37c96fa4/FLAG6d549fd76 [2018-10-24 22:30:43,425 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:30:43,426 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label37_true-unreach-call.c [2018-10-24 22:30:43,472 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/83d1b886c/65a186a4b18f4025bcdc50aa37c96fa4/FLAG6d549fd76 [2018-10-24 22:30:43,491 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/83d1b886c/65a186a4b18f4025bcdc50aa37c96fa4 [2018-10-24 22:30:43,507 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:30:43,510 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:30:43,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:30:43,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:30:43,515 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:30:43,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:30:43" (1/1) ... [2018-10-24 22:30:43,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d3a67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:43, skipping insertion in model container [2018-10-24 22:30:43,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:30:43" (1/1) ... [2018-10-24 22:30:43,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:30:43,787 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:30:45,764 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:30:45,768 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:30:46,855 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:30:46,911 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:30:46,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:46 WrapperNode [2018-10-24 22:30:46,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:30:46,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:30:46,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:30:46,913 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:30:46,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:46" (1/1) ... [2018-10-24 22:30:47,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:46" (1/1) ... [2018-10-24 22:30:47,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:30:47,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:30:47,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:30:47,629 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:30:47,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:46" (1/1) ... [2018-10-24 22:30:47,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:46" (1/1) ... [2018-10-24 22:30:47,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:46" (1/1) ... [2018-10-24 22:30:47,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:46" (1/1) ... [2018-10-24 22:30:47,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:46" (1/1) ... [2018-10-24 22:30:47,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:46" (1/1) ... [2018-10-24 22:30:47,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:46" (1/1) ... [2018-10-24 22:30:48,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:30:48,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:30:48,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:30:48,032 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:30:48,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:46" (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 [2018-10-24 22:30:48,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:30:48,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:30:48,107 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 22:30:48,107 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 22:30:48,107 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 22:30:48,107 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 22:30:48,108 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 22:30:48,108 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 22:30:48,108 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:30:48,108 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:30:48,108 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:30:48,109 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:30:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:30:48,110 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:30:48,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:30:48,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:30:48,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:30:48,110 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:31:07,298 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:31:07,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:31:07 BoogieIcfgContainer [2018-10-24 22:31:07,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:31:07,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:31:07,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:31:07,304 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:31:07,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:30:43" (1/3) ... [2018-10-24 22:31:07,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9cb27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:31:07, skipping insertion in model container [2018-10-24 22:31:07,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:46" (2/3) ... [2018-10-24 22:31:07,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9cb27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:31:07, skipping insertion in model container [2018-10-24 22:31:07,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:31:07" (3/3) ... [2018-10-24 22:31:07,308 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label37_true-unreach-call.c [2018-10-24 22:31:07,318 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:31:07,329 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:31:07,347 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:31:07,412 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:31:07,412 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:31:07,413 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:31:07,413 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:31:07,413 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:31:07,413 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:31:07,413 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:31:07,414 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:31:07,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 22:31:07,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-24 22:31:07,485 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:31:07,486 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:31:07,489 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:31:07,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:31:07,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1282298446, now seen corresponding path program 1 times [2018-10-24 22:31:07,498 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:31:07,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:31:07,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:31:07,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:31:07,557 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:31:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:31:08,067 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-24 22:31:08,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:31:08,116 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:31:08,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:31:08,117 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:31:08,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:31:08,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:31:08,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:31:08,158 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-10-24 22:31:37,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:31:37,726 INFO L93 Difference]: Finished difference Result 6513 states and 12383 transitions. [2018-10-24 22:31:37,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:31:37,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-10-24 22:31:37,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:31:37,780 INFO L225 Difference]: With dead ends: 6513 [2018-10-24 22:31:37,782 INFO L226 Difference]: Without dead ends: 4729 [2018-10-24 22:31:37,801 INFO L605 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 [2018-10-24 22:31:37,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2018-10-24 22:31:38,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4693. [2018-10-24 22:31:38,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2018-10-24 22:31:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7735 transitions. [2018-10-24 22:31:38,183 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7735 transitions. Word has length 45 [2018-10-24 22:31:38,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:31:38,185 INFO L481 AbstractCegarLoop]: Abstraction has 4693 states and 7735 transitions. [2018-10-24 22:31:38,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:31:38,185 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7735 transitions. [2018-10-24 22:31:38,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 22:31:38,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:31:38,199 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:31:38,199 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:31:38,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:31:38,199 INFO L82 PathProgramCache]: Analyzing trace with hash 889446652, now seen corresponding path program 1 times [2018-10-24 22:31:38,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:31:38,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:31:38,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:31:38,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:31:38,203 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:31:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:31:38,591 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:31:38,997 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:31:38,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:31:38,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:31:38,997 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:31:39,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:31:39,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:31:39,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:31:39,001 INFO L87 Difference]: Start difference. First operand 4693 states and 7735 transitions. Second operand 6 states. [2018-10-24 22:32:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:32:09,586 INFO L93 Difference]: Finished difference Result 17886 states and 30173 transitions. [2018-10-24 22:32:09,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:32:09,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-24 22:32:09,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:32:09,666 INFO L225 Difference]: With dead ends: 17886 [2018-10-24 22:32:09,667 INFO L226 Difference]: Without dead ends: 13199 [2018-10-24 22:32:09,687 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:32:09,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13199 states. [2018-10-24 22:32:10,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13199 to 13130. [2018-10-24 22:32:10,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13130 states. [2018-10-24 22:32:10,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13130 states to 13130 states and 19368 transitions. [2018-10-24 22:32:10,061 INFO L78 Accepts]: Start accepts. Automaton has 13130 states and 19368 transitions. Word has length 117 [2018-10-24 22:32:10,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:32:10,062 INFO L481 AbstractCegarLoop]: Abstraction has 13130 states and 19368 transitions. [2018-10-24 22:32:10,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:32:10,062 INFO L276 IsEmpty]: Start isEmpty. Operand 13130 states and 19368 transitions. [2018-10-24 22:32:10,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-24 22:32:10,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:32:10,074 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:32:10,074 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:32:10,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:32:10,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1968737342, now seen corresponding path program 1 times [2018-10-24 22:32:10,076 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:32:10,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:10,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:32:10,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:10,077 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:32:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:32:10,486 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:32:10,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:32:10,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:32:10,487 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:32:10,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:32:10,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:32:10,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:32:10,489 INFO L87 Difference]: Start difference. First operand 13130 states and 19368 transitions. Second operand 6 states. [2018-10-24 22:32:34,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:32:34,058 INFO L93 Difference]: Finished difference Result 39898 states and 60162 transitions. [2018-10-24 22:32:34,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:32:34,060 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-10-24 22:32:34,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:32:34,195 INFO L225 Difference]: With dead ends: 39898 [2018-10-24 22:32:34,195 INFO L226 Difference]: Without dead ends: 26774 [2018-10-24 22:32:34,235 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:32:34,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26774 states. [2018-10-24 22:32:34,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26774 to 26535. [2018-10-24 22:32:34,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26535 states. [2018-10-24 22:32:34,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26535 states to 26535 states and 38582 transitions. [2018-10-24 22:32:34,830 INFO L78 Accepts]: Start accepts. Automaton has 26535 states and 38582 transitions. Word has length 127 [2018-10-24 22:32:34,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:32:34,831 INFO L481 AbstractCegarLoop]: Abstraction has 26535 states and 38582 transitions. [2018-10-24 22:32:34,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:32:34,831 INFO L276 IsEmpty]: Start isEmpty. Operand 26535 states and 38582 transitions. [2018-10-24 22:32:34,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-24 22:32:34,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:32:34,836 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:32:34,837 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:32:34,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:32:34,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1600159600, now seen corresponding path program 1 times [2018-10-24 22:32:34,837 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:32:34,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:34,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:32:34,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:34,842 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:32:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:32:35,172 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:32:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:32:35,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:32:35,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:32:35,581 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:32:35,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:32:35,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:32:35,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:32:35,583 INFO L87 Difference]: Start difference. First operand 26535 states and 38582 transitions. Second operand 6 states. [2018-10-24 22:32:58,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:32:58,428 INFO L93 Difference]: Finished difference Result 70541 states and 106559 transitions. [2018-10-24 22:32:58,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:32:58,435 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-10-24 22:32:58,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:32:58,569 INFO L225 Difference]: With dead ends: 70541 [2018-10-24 22:32:58,569 INFO L226 Difference]: Without dead ends: 44012 [2018-10-24 22:32:58,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:32:58,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44012 states. [2018-10-24 22:32:59,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44012 to 43856. [2018-10-24 22:32:59,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43856 states. [2018-10-24 22:32:59,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43856 states to 43856 states and 61032 transitions. [2018-10-24 22:32:59,495 INFO L78 Accepts]: Start accepts. Automaton has 43856 states and 61032 transitions. Word has length 160 [2018-10-24 22:32:59,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:32:59,495 INFO L481 AbstractCegarLoop]: Abstraction has 43856 states and 61032 transitions. [2018-10-24 22:32:59,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:32:59,497 INFO L276 IsEmpty]: Start isEmpty. Operand 43856 states and 61032 transitions. [2018-10-24 22:32:59,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-24 22:32:59,500 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:32:59,503 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:32:59,504 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:32:59,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:32:59,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1164760866, now seen corresponding path program 1 times [2018-10-24 22:32:59,504 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:32:59,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:59,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:32:59,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:59,506 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:32:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:32:59,788 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:33:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 76 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:33:00,180 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:33:00,180 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:33:00,181 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-10-24 22:33:00,183 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5486], [5488], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5724], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5769], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-24 22:33:00,270 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:33:00,271 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:33:02,375 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:33:02,377 INFO L272 AbstractInterpreter]: Visited 84 different actions 84 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 22:33:02,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:33:02,422 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:33:04,743 INFO L232 lantSequenceWeakener]: Weakened 186 states. On average, predicates are now at 75.64% of their original sizes. [2018-10-24 22:33:04,744 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:33:05,193 INFO L413 sIntCurrentIteration]: We have 195 unified AI predicates [2018-10-24 22:33:05,194 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:33:05,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:33:05,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 22:33:05,195 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:33:05,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:33:05,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:33:05,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:33:05,196 INFO L87 Difference]: Start difference. First operand 43856 states and 61032 transitions. Second operand 7 states. [2018-10-24 22:33:09,647 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown