java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 22:14:16,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 22:14:16,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 22:14:16,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 22:14:16,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 22:14:16,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 22:14:16,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 22:14:16,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 22:14:16,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 22:14:16,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 22:14:16,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 22:14:16,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 22:14:16,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 22:14:16,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 22:14:16,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 22:14:16,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 22:14:16,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 22:14:16,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 22:14:16,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 22:14:16,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 22:14:16,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 22:14:16,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 22:14:16,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 22:14:16,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 22:14:16,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 22:14:16,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 22:14:16,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 22:14:16,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 22:14:16,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 22:14:16,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 22:14:16,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 22:14:16,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 22:14:16,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 22:14:16,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 22:14:16,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 22:14:16,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 22:14:16,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 22:14:16,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 22:14:16,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 22:14:16,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 22:14:16,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 22:14:16,394 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-02 22:14:16,410 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 22:14:16,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 22:14:16,410 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 22:14:16,411 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 22:14:16,411 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 22:14:16,412 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 22:14:16,412 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 22:14:16,412 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 22:14:16,412 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 22:14:16,412 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 22:14:16,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 22:14:16,413 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 22:14:16,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 22:14:16,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 22:14:16,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 22:14:16,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 22:14:16,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 22:14:16,415 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 22:14:16,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 22:14:16,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 22:14:16,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 22:14:16,416 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 22:14:16,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 22:14:16,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 22:14:16,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 22:14:16,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 22:14:16,417 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 22:14:16,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 22:14:16,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 22:14:16,417 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 22:14:16,453 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 22:14:16,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 22:14:16,469 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 22:14:16,470 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 22:14:16,471 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 22:14:16,472 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label59.c [2019-10-02 22:14:16,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531f37fc4/8319a4b4d1ef425fa0015e073dcd83bb/FLAGa6bf39cee [2019-10-02 22:14:17,217 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 22:14:17,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label59.c [2019-10-02 22:14:17,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531f37fc4/8319a4b4d1ef425fa0015e073dcd83bb/FLAGa6bf39cee [2019-10-02 22:14:17,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531f37fc4/8319a4b4d1ef425fa0015e073dcd83bb [2019-10-02 22:14:17,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 22:14:17,381 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 22:14:17,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 22:14:17,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 22:14:17,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 22:14:17,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:14:17" (1/1) ... [2019-10-02 22:14:17,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283534bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:14:17, skipping insertion in model container [2019-10-02 22:14:17,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:14:17" (1/1) ... [2019-10-02 22:14:17,403 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 22:14:17,546 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 22:14:18,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:14:18,601 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 22:14:19,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:14:19,239 INFO L192 MainTranslator]: Completed translation [2019-10-02 22:14:19,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:14:19 WrapperNode [2019-10-02 22:14:19,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 22:14:19,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 22:14:19,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 22:14:19,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 22:14:19,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:14:19" (1/1) ... [2019-10-02 22:14:19,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:14:19" (1/1) ... [2019-10-02 22:14:19,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:14:19" (1/1) ... [2019-10-02 22:14:19,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:14:19" (1/1) ... [2019-10-02 22:14:19,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:14:19" (1/1) ... [2019-10-02 22:14:19,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:14:19" (1/1) ... [2019-10-02 22:14:19,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:14:19" (1/1) ... [2019-10-02 22:14:19,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 22:14:19,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 22:14:19,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 22:14:19,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 22:14:19,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:14:19" (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 [2019-10-02 22:14:19,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 22:14:19,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 22:14:19,583 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 22:14:19,583 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-02 22:14:19,583 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-02 22:14:19,583 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 22:14:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 22:14:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-02 22:14:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-02 22:14:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 22:14:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 22:14:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 22:14:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 22:14:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 22:14:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 22:14:23,425 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 22:14:23,425 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 22:14:23,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:14:23 BoogieIcfgContainer [2019-10-02 22:14:23,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 22:14:23,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 22:14:23,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 22:14:23,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 22:14:23,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 10:14:17" (1/3) ... [2019-10-02 22:14:23,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5adf6989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:14:23, skipping insertion in model container [2019-10-02 22:14:23,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:14:19" (2/3) ... [2019-10-02 22:14:23,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5adf6989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:14:23, skipping insertion in model container [2019-10-02 22:14:23,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:14:23" (3/3) ... [2019-10-02 22:14:23,439 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label59.c [2019-10-02 22:14:23,450 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 22:14:23,461 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 22:14:23,479 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 22:14:23,513 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 22:14:23,514 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 22:14:23,514 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 22:14:23,514 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 22:14:23,514 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 22:14:23,514 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 22:14:23,514 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 22:14:23,514 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 22:14:23,561 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-02 22:14:23,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-02 22:14:23,577 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:14:23,578 INFO L411 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] [2019-10-02 22:14:23,581 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:14:23,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:14:23,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1601296886, now seen corresponding path program 1 times [2019-10-02 22:14:23,593 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:14:23,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:14:23,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:14:23,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:14:23,650 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:14:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:14:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:14:23,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:14:23,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 22:14:23,971 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:14:23,977 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 22:14:23,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 22:14:23,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 22:14:23,995 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 3 states. [2019-10-02 22:14:28,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:14:28,248 INFO L93 Difference]: Finished difference Result 1480 states and 2746 transitions. [2019-10-02 22:14:28,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 22:14:28,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-02 22:14:28,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:14:28,286 INFO L225 Difference]: With dead ends: 1480 [2019-10-02 22:14:28,286 INFO L226 Difference]: Without dead ends: 1412 [2019-10-02 22:14:28,288 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 22:14:28,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2019-10-02 22:14:28,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1412. [2019-10-02 22:14:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2019-10-02 22:14:28,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2630 transitions. [2019-10-02 22:14:28,421 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2630 transitions. Word has length 43 [2019-10-02 22:14:28,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:14:28,421 INFO L475 AbstractCegarLoop]: Abstraction has 1412 states and 2630 transitions. [2019-10-02 22:14:28,421 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 22:14:28,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2630 transitions. [2019-10-02 22:14:28,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-02 22:14:28,427 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:14:28,427 INFO L411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:14:28,427 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:14:28,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:14:28,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1229064497, now seen corresponding path program 1 times [2019-10-02 22:14:28,428 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:14:28,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:14:28,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:14:28,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:14:28,430 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:14:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:14:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:14:28,639 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:14:28,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 22:14:28,640 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:14:28,641 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 22:14:28,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 22:14:28,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 22:14:28,642 INFO L87 Difference]: Start difference. First operand 1412 states and 2630 transitions. Second operand 5 states. [2019-10-02 22:14:33,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:14:33,984 INFO L93 Difference]: Finished difference Result 2885 states and 4979 transitions. [2019-10-02 22:14:33,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 22:14:33,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2019-10-02 22:14:33,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:14:34,004 INFO L225 Difference]: With dead ends: 2885 [2019-10-02 22:14:34,004 INFO L226 Difference]: Without dead ends: 2885 [2019-10-02 22:14:34,005 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-02 22:14:34,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2019-10-02 22:14:34,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2861. [2019-10-02 22:14:34,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2861 states. [2019-10-02 22:14:34,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 4925 transitions. [2019-10-02 22:14:34,100 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 4925 transitions. Word has length 112 [2019-10-02 22:14:34,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:14:34,101 INFO L475 AbstractCegarLoop]: Abstraction has 2861 states and 4925 transitions. [2019-10-02 22:14:34,101 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 22:14:34,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 4925 transitions. [2019-10-02 22:14:34,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-02 22:14:34,104 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:14:34,104 INFO L411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:14:34,104 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:14:34,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:14:34,105 INFO L82 PathProgramCache]: Analyzing trace with hash -25302418, now seen corresponding path program 1 times [2019-10-02 22:14:34,105 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:14:34,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:14:34,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:14:34,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:14:34,107 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:14:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:14:34,228 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:14:34,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:14:34,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 22:14:34,229 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:14:34,229 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 22:14:34,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 22:14:34,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 22:14:34,230 INFO L87 Difference]: Start difference. First operand 2861 states and 4925 transitions. Second operand 5 states. [2019-10-02 22:14:39,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:14:39,553 INFO L93 Difference]: Finished difference Result 4356 states and 6168 transitions. [2019-10-02 22:14:39,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 22:14:39,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2019-10-02 22:14:39,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:14:39,583 INFO L225 Difference]: With dead ends: 4356 [2019-10-02 22:14:39,583 INFO L226 Difference]: Without dead ends: 4356 [2019-10-02 22:14:39,583 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-02 22:14:39,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4356 states. [2019-10-02 22:14:39,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4356 to 4325. [2019-10-02 22:14:39,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4325 states. [2019-10-02 22:14:39,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4325 states to 4325 states and 6079 transitions. [2019-10-02 22:14:39,741 INFO L78 Accepts]: Start accepts. Automaton has 4325 states and 6079 transitions. Word has length 113 [2019-10-02 22:14:39,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:14:39,743 INFO L475 AbstractCegarLoop]: Abstraction has 4325 states and 6079 transitions. [2019-10-02 22:14:39,743 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 22:14:39,743 INFO L276 IsEmpty]: Start isEmpty. Operand 4325 states and 6079 transitions. [2019-10-02 22:14:39,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-02 22:14:39,749 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:14:39,749 INFO L411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:14:39,749 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:14:39,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:14:39,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1998315758, now seen corresponding path program 1 times [2019-10-02 22:14:39,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:14:39,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:14:39,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:14:39,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:14:39,754 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:14:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:14:39,961 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:14:39,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:14:39,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 22:14:39,962 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:14:39,962 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 22:14:39,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 22:14:39,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 22:14:39,964 INFO L87 Difference]: Start difference. First operand 4325 states and 6079 transitions. Second operand 5 states. [2019-10-02 22:14:45,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:14:45,772 INFO L93 Difference]: Finished difference Result 8955 states and 11705 transitions. [2019-10-02 22:14:45,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 22:14:45,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2019-10-02 22:14:45,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:14:45,813 INFO L225 Difference]: With dead ends: 8955 [2019-10-02 22:14:45,813 INFO L226 Difference]: Without dead ends: 8955 [2019-10-02 22:14:45,813 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-02 22:14:45,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8955 states. [2019-10-02 22:14:46,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8955 to 8798. [2019-10-02 22:14:46,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8798 states. [2019-10-02 22:14:46,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8798 states to 8798 states and 11426 transitions. [2019-10-02 22:14:46,028 INFO L78 Accepts]: Start accepts. Automaton has 8798 states and 11426 transitions. Word has length 115 [2019-10-02 22:14:46,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:14:46,029 INFO L475 AbstractCegarLoop]: Abstraction has 8798 states and 11426 transitions. [2019-10-02 22:14:46,029 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 22:14:46,029 INFO L276 IsEmpty]: Start isEmpty. Operand 8798 states and 11426 transitions. [2019-10-02 22:14:46,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-02 22:14:46,030 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:14:46,031 INFO L411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:14:46,031 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:14:46,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:14:46,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2016787783, now seen corresponding path program 1 times [2019-10-02 22:14:46,032 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:14:46,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:14:46,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:14:46,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:14:46,033 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:14:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:14:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:14:46,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:14:46,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 22:14:46,124 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:14:46,125 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 22:14:46,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 22:14:46,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 22:14:46,125 INFO L87 Difference]: Start difference. First operand 8798 states and 11426 transitions. Second operand 3 states. [2019-10-02 22:14:49,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:14:49,914 INFO L93 Difference]: Finished difference Result 16620 states and 19932 transitions. [2019-10-02 22:14:49,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 22:14:49,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2019-10-02 22:14:49,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:14:49,978 INFO L225 Difference]: With dead ends: 16620 [2019-10-02 22:14:49,978 INFO L226 Difference]: Without dead ends: 16620 [2019-10-02 22:14:49,979 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 22:14:49,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16620 states. [2019-10-02 22:14:50,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16620 to 15908. [2019-10-02 22:14:50,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15908 states. [2019-10-02 22:14:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15908 states to 15908 states and 19164 transitions. [2019-10-02 22:14:50,231 INFO L78 Accepts]: Start accepts. Automaton has 15908 states and 19164 transitions. Word has length 140 [2019-10-02 22:14:50,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:14:50,232 INFO L475 AbstractCegarLoop]: Abstraction has 15908 states and 19164 transitions. [2019-10-02 22:14:50,232 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 22:14:50,233 INFO L276 IsEmpty]: Start isEmpty. Operand 15908 states and 19164 transitions. [2019-10-02 22:14:50,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-02 22:14:50,237 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:14:50,237 INFO L411 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-02 22:14:50,238 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:14:50,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:14:50,238 INFO L82 PathProgramCache]: Analyzing trace with hash 894224995, now seen corresponding path program 1 times [2019-10-02 22:14:50,239 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:14:50,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:14:50,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:14:50,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:14:50,244 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:14:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:14:50,491 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-10-02 22:14:50,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:14:50,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 22:14:50,491 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:14:50,492 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 22:14:50,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 22:14:50,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:14:50,494 INFO L87 Difference]: Start difference. First operand 15908 states and 19164 transitions. Second operand 4 states. [2019-10-02 22:14:57,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:14:57,006 INFO L93 Difference]: Finished difference Result 30163 states and 37304 transitions. [2019-10-02 22:14:57,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 22:14:57,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 218 [2019-10-02 22:14:57,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:14:57,105 INFO L225 Difference]: With dead ends: 30163 [2019-10-02 22:14:57,105 INFO L226 Difference]: Without dead ends: 30163 [2019-10-02 22:14:57,106 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:14:57,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30163 states. [2019-10-02 22:14:57,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30163 to 27348. [2019-10-02 22:14:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27348 states. [2019-10-02 22:14:58,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27348 states to 27348 states and 34021 transitions. [2019-10-02 22:14:58,500 INFO L78 Accepts]: Start accepts. Automaton has 27348 states and 34021 transitions. Word has length 218 [2019-10-02 22:14:58,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:14:58,503 INFO L475 AbstractCegarLoop]: Abstraction has 27348 states and 34021 transitions. [2019-10-02 22:14:58,503 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 22:14:58,503 INFO L276 IsEmpty]: Start isEmpty. Operand 27348 states and 34021 transitions. [2019-10-02 22:14:58,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-10-02 22:14:58,507 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:14:58,507 INFO L411 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-02 22:14:58,508 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:14:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:14:58,512 INFO L82 PathProgramCache]: Analyzing trace with hash 935572222, now seen corresponding path program 1 times [2019-10-02 22:14:58,512 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:14:58,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:14:58,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:14:58,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:14:58,514 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:14:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:14:58,658 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:14:58,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 22:14:58,659 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 22:14:58,660 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 222 with the following transitions: [2019-10-02 22:14:58,662 INFO L207 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1875], [1877], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2128], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2996], [3000], [3009], [3013], [3015], [3024], [3025], [3026], [3028], [3029] [2019-10-02 22:14:58,710 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 22:14:58,711 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 22:15:04,984 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 22:15:04,986 INFO L272 AbstractInterpreter]: Visited 111 different actions 111 times. Never merged. Never widened. Performed 261 root evaluator evaluations with a maximum evaluation depth of 13. Performed 261 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Never found a fixpoint. Largest state had 24 variables. [2019-10-02 22:15:04,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:15:04,990 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 22:15:09,743 INFO L227 lantSequenceWeakener]: Weakened 202 states. On average, predicates are now at 77.98% of their original sizes. [2019-10-02 22:15:09,743 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 22:15:09,836 INFO L420 sIntCurrentIteration]: We unified 220 AI predicates to 220 [2019-10-02 22:15:09,836 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 22:15:09,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 22:15:09,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2019-10-02 22:15:09,837 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:15:09,838 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 22:15:09,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 22:15:09,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-10-02 22:15:09,839 INFO L87 Difference]: Start difference. First operand 27348 states and 34021 transitions. Second operand 10 states. [2019-10-02 22:17:04,264 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.