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/Problem11_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 15:52:04,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 15:52:04,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 15:52:04,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 15:52:04,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 15:52:04,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 15:52:04,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 15:52:04,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 15:52:04,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 15:52:04,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 15:52:04,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 15:52:04,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 15:52:04,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 15:52:04,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 15:52:04,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 15:52:04,300 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 [2019-09-09 15:52:04,315 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 15:52:04,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 15:52:04,316 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 15:52:04,316 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 15:52:04,317 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 15:52:04,317 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 15:52:04,317 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 15:52:04,317 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 15:52:04,318 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 15:52:04,318 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 15:52:04,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 15:52:04,318 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 15:52:04,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 15:52:04,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 15:52:04,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 15:52:04,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 15:52:04,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 15:52:04,320 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 15:52:04,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 15:52:04,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 15:52:04,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 15:52:04,321 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 15:52:04,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 15:52:04,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 15:52:04,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 15:52:04,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 15:52:04,322 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 15:52:04,322 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 15:52:04,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 15:52:04,322 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 15:52:04,355 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 15:52:04,368 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 15:52:04,372 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 15:52:04,373 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 15:52:04,374 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 15:52:04,374 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label59.c [2019-09-09 15:52:04,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8d8bb6a7/1461aa607988417ca5a655baa3ccc15a/FLAGd765ecc3f [2019-09-09 15:52:05,035 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 15:52:05,036 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label59.c [2019-09-09 15:52:05,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8d8bb6a7/1461aa607988417ca5a655baa3ccc15a/FLAGd765ecc3f [2019-09-09 15:52:05,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8d8bb6a7/1461aa607988417ca5a655baa3ccc15a [2019-09-09 15:52:05,278 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 15:52:05,280 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 15:52:05,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 15:52:05,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 15:52:05,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 15:52:05,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 03:52:05" (1/1) ... [2019-09-09 15:52:05,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71373b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:05, skipping insertion in model container [2019-09-09 15:52:05,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 03:52:05" (1/1) ... [2019-09-09 15:52:05,301 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 15:52:05,360 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 15:52:06,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 15:52:06,009 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 15:52:06,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 15:52:06,337 INFO L192 MainTranslator]: Completed translation [2019-09-09 15:52:06,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:06 WrapperNode [2019-09-09 15:52:06,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 15:52:06,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 15:52:06,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 15:52:06,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 15:52:06,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:06" (1/1) ... [2019-09-09 15:52:06,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:06" (1/1) ... [2019-09-09 15:52:06,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:06" (1/1) ... [2019-09-09 15:52:06,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:06" (1/1) ... [2019-09-09 15:52:06,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:06" (1/1) ... [2019-09-09 15:52:06,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:06" (1/1) ... [2019-09-09 15:52:06,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:06" (1/1) ... [2019-09-09 15:52:06,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 15:52:06,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 15:52:06,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 15:52:06,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 15:52:06,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:06" (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 [2019-09-09 15:52:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 15:52:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 15:52:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 15:52:06,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 15:52:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 15:52:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 15:52:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 15:52:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 15:52:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 15:52:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 15:52:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 15:52:08,514 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 15:52:08,514 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 15:52:08,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 03:52:08 BoogieIcfgContainer [2019-09-09 15:52:08,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 15:52:08,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 15:52:08,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 15:52:08,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 15:52:08,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 03:52:05" (1/3) ... [2019-09-09 15:52:08,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc340d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 03:52:08, skipping insertion in model container [2019-09-09 15:52:08,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:06" (2/3) ... [2019-09-09 15:52:08,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc340d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 03:52:08, skipping insertion in model container [2019-09-09 15:52:08,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 03:52:08" (3/3) ... [2019-09-09 15:52:08,525 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label59.c [2019-09-09 15:52:08,536 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 15:52:08,545 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 15:52:08,563 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 15:52:08,592 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 15:52:08,592 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 15:52:08,592 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 15:52:08,593 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 15:52:08,593 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 15:52:08,593 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 15:52:08,593 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 15:52:08,594 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 15:52:08,620 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-09-09 15:52:08,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-09 15:52:08,635 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:52:08,636 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 15:52:08,638 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:52:08,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:52:08,645 INFO L82 PathProgramCache]: Analyzing trace with hash -912328190, now seen corresponding path program 1 times [2019-09-09 15:52:08,647 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:52:08,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:08,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:52:08,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:08,704 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:52:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:52:09,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:52:09,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:52:09,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 15:52:09,108 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:52:09,114 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 15:52:09,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 15:52:09,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 15:52:09,132 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 3 states. [2019-09-09 15:52:10,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:52:10,554 INFO L93 Difference]: Finished difference Result 496 states and 803 transitions. [2019-09-09 15:52:10,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 15:52:10,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-09-09 15:52:10,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:52:10,594 INFO L225 Difference]: With dead ends: 496 [2019-09-09 15:52:10,594 INFO L226 Difference]: Without dead ends: 428 [2019-09-09 15:52:10,598 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 15:52:10,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2019-09-09 15:52:10,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 420. [2019-09-09 15:52:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2019-09-09 15:52:10,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 671 transitions. [2019-09-09 15:52:10,688 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 671 transitions. Word has length 65 [2019-09-09 15:52:10,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:52:10,689 INFO L475 AbstractCegarLoop]: Abstraction has 420 states and 671 transitions. [2019-09-09 15:52:10,689 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 15:52:10,689 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 671 transitions. [2019-09-09 15:52:10,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-09 15:52:10,696 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:52:10,696 INFO L399 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, 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] [2019-09-09 15:52:10,697 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:52:10,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:52:10,697 INFO L82 PathProgramCache]: Analyzing trace with hash -588923191, now seen corresponding path program 1 times [2019-09-09 15:52:10,697 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:52:10,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:10,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:52:10,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:10,699 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:52:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:52:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:52:10,895 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:52:10,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 15:52:10,895 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:52:10,897 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 15:52:10,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 15:52:10,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 15:52:10,898 INFO L87 Difference]: Start difference. First operand 420 states and 671 transitions. Second operand 6 states. [2019-09-09 15:52:12,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:52:12,745 INFO L93 Difference]: Finished difference Result 841 states and 1214 transitions. [2019-09-09 15:52:12,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-09 15:52:12,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2019-09-09 15:52:12,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:52:12,755 INFO L225 Difference]: With dead ends: 841 [2019-09-09 15:52:12,755 INFO L226 Difference]: Without dead ends: 841 [2019-09-09 15:52:12,756 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-09 15:52:12,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2019-09-09 15:52:12,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 817. [2019-09-09 15:52:12,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 817 states. [2019-09-09 15:52:12,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1174 transitions. [2019-09-09 15:52:12,807 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1174 transitions. Word has length 134 [2019-09-09 15:52:12,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:52:12,810 INFO L475 AbstractCegarLoop]: Abstraction has 817 states and 1174 transitions. [2019-09-09 15:52:12,810 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 15:52:12,810 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1174 transitions. [2019-09-09 15:52:12,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-09-09 15:52:12,823 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:52:12,823 INFO L399 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, 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] [2019-09-09 15:52:12,824 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:52:12,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:52:12,824 INFO L82 PathProgramCache]: Analyzing trace with hash 578512354, now seen corresponding path program 1 times [2019-09-09 15:52:12,824 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:52:12,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:12,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:52:12,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:12,827 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:52:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:52:13,056 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:52:13,058 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:52:13,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 15:52:13,059 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:52:13,061 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 15:52:13,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 15:52:13,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 15:52:13,062 INFO L87 Difference]: Start difference. First operand 817 states and 1174 transitions. Second operand 6 states. [2019-09-09 15:52:14,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:52:14,577 INFO L93 Difference]: Finished difference Result 1235 states and 1755 transitions. [2019-09-09 15:52:14,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 15:52:14,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2019-09-09 15:52:14,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:52:14,586 INFO L225 Difference]: With dead ends: 1235 [2019-09-09 15:52:14,586 INFO L226 Difference]: Without dead ends: 1235 [2019-09-09 15:52:14,586 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 15:52:14,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2019-09-09 15:52:14,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1221. [2019-09-09 15:52:14,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1221 states. [2019-09-09 15:52:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1725 transitions. [2019-09-09 15:52:14,622 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1725 transitions. Word has length 137 [2019-09-09 15:52:14,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:52:14,623 INFO L475 AbstractCegarLoop]: Abstraction has 1221 states and 1725 transitions. [2019-09-09 15:52:14,623 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 15:52:14,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1725 transitions. [2019-09-09 15:52:14,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-09-09 15:52:14,625 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:52:14,625 INFO L399 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, 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] [2019-09-09 15:52:14,625 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:52:14,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:52:14,626 INFO L82 PathProgramCache]: Analyzing trace with hash -2098670063, now seen corresponding path program 1 times [2019-09-09 15:52:14,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:52:14,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:14,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:52:14,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:14,627 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:52:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:52:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:52:14,749 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:52:14,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 15:52:14,749 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:52:14,750 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 15:52:14,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 15:52:14,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 15:52:14,751 INFO L87 Difference]: Start difference. First operand 1221 states and 1725 transitions. Second operand 4 states. [2019-09-09 15:52:16,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:52:16,644 INFO L93 Difference]: Finished difference Result 3162 states and 4467 transitions. [2019-09-09 15:52:16,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 15:52:16,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2019-09-09 15:52:16,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:52:16,671 INFO L225 Difference]: With dead ends: 3162 [2019-09-09 15:52:16,671 INFO L226 Difference]: Without dead ends: 3162 [2019-09-09 15:52:16,672 INFO L628 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 [2019-09-09 15:52:16,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2019-09-09 15:52:16,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 2968. [2019-09-09 15:52:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2968 states. [2019-09-09 15:52:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 4222 transitions. [2019-09-09 15:52:16,801 INFO L78 Accepts]: Start accepts. Automaton has 2968 states and 4222 transitions. Word has length 138 [2019-09-09 15:52:16,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:52:16,801 INFO L475 AbstractCegarLoop]: Abstraction has 2968 states and 4222 transitions. [2019-09-09 15:52:16,801 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 15:52:16,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2968 states and 4222 transitions. [2019-09-09 15:52:16,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-09-09 15:52:16,805 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:52:16,805 INFO L399 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, 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] [2019-09-09 15:52:16,805 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:52:16,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:52:16,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1237468413, now seen corresponding path program 1 times [2019-09-09 15:52:16,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:52:16,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:16,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:52:16,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:16,808 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:52:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:52:16,948 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:52:16,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:52:16,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 15:52:16,949 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:52:16,950 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 15:52:16,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 15:52:16,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 15:52:16,951 INFO L87 Difference]: Start difference. First operand 2968 states and 4222 transitions. Second operand 6 states. [2019-09-09 15:52:19,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:52:19,374 INFO L93 Difference]: Finished difference Result 5156 states and 8932 transitions. [2019-09-09 15:52:19,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-09 15:52:19,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2019-09-09 15:52:19,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:52:19,430 INFO L225 Difference]: With dead ends: 5156 [2019-09-09 15:52:19,430 INFO L226 Difference]: Without dead ends: 5156 [2019-09-09 15:52:19,431 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-09 15:52:19,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5156 states. [2019-09-09 15:52:19,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5156 to 4822. [2019-09-09 15:52:19,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4822 states. [2019-09-09 15:52:19,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 7345 transitions. [2019-09-09 15:52:19,676 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 7345 transitions. Word has length 144 [2019-09-09 15:52:19,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:52:19,676 INFO L475 AbstractCegarLoop]: Abstraction has 4822 states and 7345 transitions. [2019-09-09 15:52:19,676 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 15:52:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 7345 transitions. [2019-09-09 15:52:19,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-09-09 15:52:19,681 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:52:19,681 INFO L399 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, 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] [2019-09-09 15:52:19,682 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:52:19,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:52:19,682 INFO L82 PathProgramCache]: Analyzing trace with hash -401394695, now seen corresponding path program 1 times [2019-09-09 15:52:19,682 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:52:19,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:19,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:52:19,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:19,684 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:52:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:52:19,884 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:52:19,885 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:52:19,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 15:52:19,885 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:52:19,886 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 15:52:19,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 15:52:19,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 15:52:19,886 INFO L87 Difference]: Start difference. First operand 4822 states and 7345 transitions. Second operand 4 states. [2019-09-09 15:52:21,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:52:21,770 INFO L93 Difference]: Finished difference Result 8683 states and 13042 transitions. [2019-09-09 15:52:21,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 15:52:21,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2019-09-09 15:52:21,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:52:21,772 INFO L225 Difference]: With dead ends: 8683 [2019-09-09 15:52:21,773 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 15:52:21,773 INFO L628 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 [2019-09-09 15:52:21,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 15:52:21,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 15:52:21,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 15:52:21,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 15:52:21,774 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 174 [2019-09-09 15:52:21,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:52:21,775 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 15:52:21,775 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 15:52:21,775 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 15:52:21,775 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 15:52:21,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 03:52:21 BoogieIcfgContainer [2019-09-09 15:52:21,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 15:52:21,784 INFO L168 Benchmark]: Toolchain (without parser) took 16502.93 ms. Allocated memory was 134.7 MB in the beginning and 450.4 MB in the end (delta: 315.6 MB). Free memory was 86.3 MB in the beginning and 363.9 MB in the end (delta: -277.6 MB). Peak memory consumption was 38.1 MB. Max. memory is 7.1 GB. [2019-09-09 15:52:21,784 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 134.7 MB. Free memory is still 107.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-09 15:52:21,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1056.88 ms. Allocated memory was 134.7 MB in the beginning and 205.0 MB in the end (delta: 70.3 MB). Free memory was 85.9 MB in the beginning and 146.8 MB in the end (delta: -60.8 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2019-09-09 15:52:21,786 INFO L168 Benchmark]: Boogie Preprocessor took 191.46 ms. Allocated memory is still 205.0 MB. Free memory was 146.8 MB in the beginning and 138.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 7.1 GB. [2019-09-09 15:52:21,787 INFO L168 Benchmark]: RCFGBuilder took 1985.26 ms. Allocated memory was 205.0 MB in the beginning and 233.3 MB in the end (delta: 28.3 MB). Free memory was 138.3 MB in the beginning and 85.0 MB in the end (delta: 53.3 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2019-09-09 15:52:21,788 INFO L168 Benchmark]: TraceAbstraction took 13264.03 ms. Allocated memory was 233.3 MB in the beginning and 450.4 MB in the end (delta: 217.1 MB). Free memory was 83.4 MB in the beginning and 363.9 MB in the end (delta: -280.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-09 15:52:21,792 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 134.7 MB. Free memory is still 107.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1056.88 ms. Allocated memory was 134.7 MB in the beginning and 205.0 MB in the end (delta: 70.3 MB). Free memory was 85.9 MB in the beginning and 146.8 MB in the end (delta: -60.8 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 191.46 ms. Allocated memory is still 205.0 MB. Free memory was 146.8 MB in the beginning and 138.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1985.26 ms. Allocated memory was 205.0 MB in the beginning and 233.3 MB in the end (delta: 28.3 MB). Free memory was 138.3 MB in the beginning and 85.0 MB in the end (delta: 53.3 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13264.03 ms. Allocated memory was 233.3 MB in the beginning and 450.4 MB in the end (delta: 217.1 MB). Free memory was 83.4 MB in the beginning and 363.9 MB in the end (delta: -280.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 183]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 292 locations, 1 error locations. SAFE Result, 13.1s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 11.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 928 SDtfs, 3185 SDslu, 484 SDs, 0 SdLazy, 6582 SolverSat, 1326 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4822occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 574 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 792 NumberOfCodeBlocks, 792 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 786 ConstructedInterpolants, 0 QuantifiedInterpolants, 356490 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 290/290 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...