java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 22:03:41,188 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 22:03:41,190 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 22:03:41,206 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 22:03:41,207 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 22:03:41,208 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 22:03:41,212 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 22:03:41,215 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 22:03:41,217 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 22:03:41,218 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 22:03:41,219 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 22:03:41,219 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 22:03:41,223 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 22:03:41,227 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 22:03:41,229 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 22:03:41,230 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 22:03:41,231 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 22:03:41,234 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 22:03:41,236 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 22:03:41,237 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 22:03:41,238 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 22:03:41,239 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 22:03:41,242 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 22:03:41,242 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 22:03:41,242 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 22:03:41,243 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 22:03:41,244 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 22:03:41,245 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 22:03:41,246 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 22:03:41,247 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 22:03:41,247 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 22:03:41,248 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 22:03:41,248 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 22:03:41,248 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 22:03:41,249 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 22:03:41,250 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 22:03:41,250 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 22:03:41,266 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 22:03:41,266 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 22:03:41,267 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 22:03:41,268 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 22:03:41,268 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 22:03:41,268 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 22:03:41,269 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 22:03:41,269 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 22:03:41,269 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 22:03:41,269 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 22:03:41,269 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 22:03:41,270 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 22:03:41,270 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 22:03:41,270 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 22:03:41,270 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 22:03:41,270 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 22:03:41,271 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 22:03:41,271 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 22:03:41,271 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 22:03:41,271 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:03:41,271 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 22:03:41,272 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 22:03:41,272 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 22:03:41,272 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 22:03:41,272 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 22:03:41,272 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 22:03:41,273 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 22:03:41,273 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 22:03:41,327 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 22:03:41,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 22:03:41,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 22:03:41,349 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 22:03:41,349 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 22:03:41,350 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label46_true-unreach-call.c [2018-11-06 22:03:41,411 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d360ac15/9a759dcc597841b296a19b30cd0f602b/FLAGe5193fd38 [2018-11-06 22:03:42,299 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 22:03:42,299 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label46_true-unreach-call.c [2018-11-06 22:03:42,350 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d360ac15/9a759dcc597841b296a19b30cd0f602b/FLAGe5193fd38 [2018-11-06 22:03:42,366 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d360ac15/9a759dcc597841b296a19b30cd0f602b [2018-11-06 22:03:42,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 22:03:42,383 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 22:03:42,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 22:03:42,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 22:03:42,392 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 22:03:42,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:42" (1/1) ... [2018-11-06 22:03:42,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb2d5a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:42, skipping insertion in model container [2018-11-06 22:03:42,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:42" (1/1) ... [2018-11-06 22:03:42,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 22:03:42,687 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 22:03:44,670 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:03:44,675 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 22:03:45,754 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:03:45,806 INFO L193 MainTranslator]: Completed translation [2018-11-06 22:03:45,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:45 WrapperNode [2018-11-06 22:03:45,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 22:03:45,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 22:03:45,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 22:03:45,809 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 22:03:45,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:45" (1/1) ... [2018-11-06 22:03:46,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:45" (1/1) ... [2018-11-06 22:03:46,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 22:03:46,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 22:03:46,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 22:03:46,991 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 22:03:47,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:45" (1/1) ... [2018-11-06 22:03:47,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:45" (1/1) ... [2018-11-06 22:03:47,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:45" (1/1) ... [2018-11-06 22:03:47,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:45" (1/1) ... [2018-11-06 22:03:47,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:45" (1/1) ... [2018-11-06 22:03:47,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:45" (1/1) ... [2018-11-06 22:03:47,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:45" (1/1) ... [2018-11-06 22:03:47,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 22:03:47,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 22:03:47,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 22:03:47,644 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 22:03:47,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:03:47,710 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 22:03:47,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 22:03:47,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:04:04,722 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:04:04,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:04 BoogieIcfgContainer [2018-11-06 22:04:04,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:04:04,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:04:04,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:04:04,728 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:04:04,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:03:42" (1/3) ... [2018-11-06 22:04:04,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5154e86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:04, skipping insertion in model container [2018-11-06 22:04:04,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:45" (2/3) ... [2018-11-06 22:04:04,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5154e86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:04, skipping insertion in model container [2018-11-06 22:04:04,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:04" (3/3) ... [2018-11-06 22:04:04,733 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label46_true-unreach-call.c [2018-11-06 22:04:04,742 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:04:04,756 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 22:04:04,774 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 22:04:04,835 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:04:04,836 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:04:04,836 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:04:04,836 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:04:04,836 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:04:04,837 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:04:04,837 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:04:04,837 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:04:04,837 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:04:04,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 22:04:04,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-06 22:04:04,912 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:04:04,913 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:04:04,916 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:04:04,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:04:04,925 INFO L82 PathProgramCache]: Analyzing trace with hash 575043410, now seen corresponding path program 1 times [2018-11-06 22:04:04,928 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:04:04,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:04:04,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:04:04,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:04:04,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:04:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:04:05,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:04:05,277 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:04:05,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:04:05,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:04:05,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:04:05,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:04:05,309 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-11-06 22:04:26,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:04:26,312 INFO L93 Difference]: Finished difference Result 6361 states and 12176 transitions. [2018-11-06 22:04:26,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:04:26,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-11-06 22:04:26,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:04:26,371 INFO L225 Difference]: With dead ends: 6361 [2018-11-06 22:04:26,371 INFO L226 Difference]: Without dead ends: 4605 [2018-11-06 22:04:26,380 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:04:26,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2018-11-06 22:04:26,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 3148. [2018-11-06 22:04:26,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3148 states. [2018-11-06 22:04:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5068 transitions. [2018-11-06 22:04:26,577 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5068 transitions. Word has length 33 [2018-11-06 22:04:26,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:04:26,578 INFO L480 AbstractCegarLoop]: Abstraction has 3148 states and 5068 transitions. [2018-11-06 22:04:26,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:04:26,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5068 transitions. [2018-11-06 22:04:26,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-06 22:04:26,582 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:04:26,583 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:04:26,583 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:04:26,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:04:26,584 INFO L82 PathProgramCache]: Analyzing trace with hash -795561107, now seen corresponding path program 1 times [2018-11-06 22:04:26,584 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:04:26,584 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:04:26,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:04:26,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:04:26,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:04:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:04:26,982 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-06 22:04:27,617 WARN L179 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-11-06 22:04:28,125 WARN L179 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-11-06 22:04:28,445 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:04:28,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:04:28,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 22:04:28,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 22:04:28,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 22:04:28,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 22:04:28,450 INFO L87 Difference]: Start difference. First operand 3148 states and 5068 transitions. Second operand 6 states. [2018-11-06 22:04:28,646 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-06 22:04:56,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:04:56,241 INFO L93 Difference]: Finished difference Result 13170 states and 20020 transitions. [2018-11-06 22:04:56,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 22:04:56,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-11-06 22:04:56,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:04:56,288 INFO L225 Difference]: With dead ends: 13170 [2018-11-06 22:04:56,288 INFO L226 Difference]: Without dead ends: 10024 [2018-11-06 22:04:56,295 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 22:04:56,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10024 states. [2018-11-06 22:04:56,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10024 to 8652. [2018-11-06 22:04:56,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8652 states. [2018-11-06 22:04:56,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8652 states to 8652 states and 12036 transitions. [2018-11-06 22:04:56,461 INFO L78 Accepts]: Start accepts. Automaton has 8652 states and 12036 transitions. Word has length 101 [2018-11-06 22:04:56,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:04:56,461 INFO L480 AbstractCegarLoop]: Abstraction has 8652 states and 12036 transitions. [2018-11-06 22:04:56,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 22:04:56,462 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 12036 transitions. [2018-11-06 22:04:56,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-11-06 22:04:56,470 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:04:56,471 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:04:56,471 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:04:56,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:04:56,472 INFO L82 PathProgramCache]: Analyzing trace with hash -881435059, now seen corresponding path program 1 times [2018-11-06 22:04:56,472 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:04:56,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:04:56,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:04:56,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:04:56,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:04:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:04:57,428 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-11-06 22:04:57,429 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:04:57,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 22:04:57,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 22:04:57,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 22:04:57,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:04:57,430 INFO L87 Difference]: Start difference. First operand 8652 states and 12036 transitions. Second operand 7 states. [2018-11-06 22:05:28,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:05:28,200 INFO L93 Difference]: Finished difference Result 26878 states and 36468 transitions. [2018-11-06 22:05:28,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:05:28,201 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2018-11-06 22:05:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:05:28,263 INFO L225 Difference]: With dead ends: 26878 [2018-11-06 22:05:28,263 INFO L226 Difference]: Without dead ends: 18228 [2018-11-06 22:05:28,274 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-06 22:05:28,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18228 states. [2018-11-06 22:05:28,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18228 to 15493. [2018-11-06 22:05:28,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15493 states. [2018-11-06 22:05:28,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15493 states to 15493 states and 19189 transitions. [2018-11-06 22:05:28,575 INFO L78 Accepts]: Start accepts. Automaton has 15493 states and 19189 transitions. Word has length 309 [2018-11-06 22:05:28,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:05:28,576 INFO L480 AbstractCegarLoop]: Abstraction has 15493 states and 19189 transitions. [2018-11-06 22:05:28,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 22:05:28,576 INFO L276 IsEmpty]: Start isEmpty. Operand 15493 states and 19189 transitions. [2018-11-06 22:05:28,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-11-06 22:05:28,582 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:05:28,582 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:05:28,583 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:05:28,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:05:28,583 INFO L82 PathProgramCache]: Analyzing trace with hash -304753805, now seen corresponding path program 1 times [2018-11-06 22:05:28,583 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:05:28,584 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:05:28,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:05:28,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:05:28,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:05:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:05:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 61 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:05:29,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:05:29,059 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:05:29,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:05:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:05:29,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:05:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:05:29,429 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:05:29,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-11-06 22:05:29,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:05:29,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:05:29,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:05:29,432 INFO L87 Difference]: Start difference. First operand 15493 states and 19189 transitions. Second operand 5 states. [2018-11-06 22:05:59,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:05:59,730 INFO L93 Difference]: Finished difference Result 70982 states and 95208 transitions. [2018-11-06 22:05:59,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:05:59,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 337 [2018-11-06 22:05:59,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:05:59,830 INFO L225 Difference]: With dead ends: 70982 [2018-11-06 22:05:59,830 INFO L226 Difference]: Without dead ends: 51391 [2018-11-06 22:05:59,851 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:05:59,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51391 states. [2018-11-06 22:06:00,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51391 to 51309. [2018-11-06 22:06:00,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51309 states. [2018-11-06 22:06:00,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51309 states to 51309 states and 60472 transitions. [2018-11-06 22:06:00,725 INFO L78 Accepts]: Start accepts. Automaton has 51309 states and 60472 transitions. Word has length 337 [2018-11-06 22:06:00,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:06:00,726 INFO L480 AbstractCegarLoop]: Abstraction has 51309 states and 60472 transitions. [2018-11-06 22:06:00,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 22:06:00,726 INFO L276 IsEmpty]: Start isEmpty. Operand 51309 states and 60472 transitions. [2018-11-06 22:06:00,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-11-06 22:06:00,732 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:06:00,732 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:06:00,733 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:06:00,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:06:00,733 INFO L82 PathProgramCache]: Analyzing trace with hash -199585925, now seen corresponding path program 1 times [2018-11-06 22:06:00,733 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:06:00,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:06:00,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:06:00,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:06:00,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:06:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:06:01,384 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 61 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-06 22:06:01,384 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:06:01,385 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:06:01,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:06:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:06:01,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:06:01,656 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:06:01,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:06:01,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 22:06:01,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:06:01,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:06:01,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:06:01,693 INFO L87 Difference]: Start difference. First operand 51309 states and 60472 transitions. Second operand 4 states. [2018-11-06 22:06:18,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:06:18,986 INFO L93 Difference]: Finished difference Result 184884 states and 220618 transitions. [2018-11-06 22:06:18,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:06:18,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 347 [2018-11-06 22:06:18,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:06:19,313 INFO L225 Difference]: With dead ends: 184884 [2018-11-06 22:06:19,313 INFO L226 Difference]: Without dead ends: 134943 [2018-11-06 22:06:19,398 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:06:19,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134943 states. [2018-11-06 22:06:21,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134943 to 86821. [2018-11-06 22:06:21,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86821 states. [2018-11-06 22:06:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86821 states to 86821 states and 101826 transitions. [2018-11-06 22:06:21,235 INFO L78 Accepts]: Start accepts. Automaton has 86821 states and 101826 transitions. Word has length 347 [2018-11-06 22:06:21,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:06:21,236 INFO L480 AbstractCegarLoop]: Abstraction has 86821 states and 101826 transitions. [2018-11-06 22:06:21,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:06:21,236 INFO L276 IsEmpty]: Start isEmpty. Operand 86821 states and 101826 transitions. [2018-11-06 22:06:21,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2018-11-06 22:06:21,253 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:06:21,254 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-11-06 22:06:21,254 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:06:21,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:06:21,255 INFO L82 PathProgramCache]: Analyzing trace with hash 633175195, now seen corresponding path program 1 times [2018-11-06 22:06:21,255 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:06:21,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:06:21,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:06:21,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:06:21,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:06:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:06:22,270 WARN L179 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-11-06 22:06:22,656 WARN L179 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-11-06 22:06:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 459 proven. 4 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-11-06 22:06:23,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:06:23,283 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:06:23,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:06:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:06:23,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:06:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-11-06 22:06:23,813 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:06:23,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 22:06:23,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:06:23,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:06:23,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:06:23,815 INFO L87 Difference]: Start difference. First operand 86821 states and 101826 transitions. Second operand 5 states. [2018-11-06 22:06:42,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:06:42,105 INFO L93 Difference]: Finished difference Result 183205 states and 213687 transitions. [2018-11-06 22:06:42,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 22:06:42,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 650 [2018-11-06 22:06:42,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:06:42,231 INFO L225 Difference]: With dead ends: 183205 [2018-11-06 22:06:42,231 INFO L226 Difference]: Without dead ends: 93651 [2018-11-06 22:06:42,298 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 650 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 22:06:42,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93651 states. [2018-11-06 22:06:43,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93651 to 90917. [2018-11-06 22:06:43,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90917 states. [2018-11-06 22:06:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90917 states to 90917 states and 100330 transitions. [2018-11-06 22:06:43,866 INFO L78 Accepts]: Start accepts. Automaton has 90917 states and 100330 transitions. Word has length 650 [2018-11-06 22:06:43,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:06:43,867 INFO L480 AbstractCegarLoop]: Abstraction has 90917 states and 100330 transitions. [2018-11-06 22:06:43,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 22:06:43,867 INFO L276 IsEmpty]: Start isEmpty. Operand 90917 states and 100330 transitions. [2018-11-06 22:06:43,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2018-11-06 22:06:43,873 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:06:43,874 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:06:43,874 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:06:43,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:06:43,874 INFO L82 PathProgramCache]: Analyzing trace with hash -862785651, now seen corresponding path program 1 times [2018-11-06 22:06:43,875 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:06:43,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:06:43,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:06:43,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:06:43,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:06:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:06:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-11-06 22:06:44,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:06:44,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 22:06:44,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:06:44,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:06:44,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:06:44,447 INFO L87 Difference]: Start difference. First operand 90917 states and 100330 transitions. Second operand 5 states. [2018-11-06 22:07:02,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:07:02,365 INFO L93 Difference]: Finished difference Result 283097 states and 316959 transitions. [2018-11-06 22:07:02,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 22:07:02,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 734 [2018-11-06 22:07:02,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:07:02,621 INFO L225 Difference]: With dead ends: 283097 [2018-11-06 22:07:02,621 INFO L226 Difference]: Without dead ends: 193548 [2018-11-06 22:07:02,719 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:07:02,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193548 states. [2018-11-06 22:07:04,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193548 to 122342. [2018-11-06 22:07:04,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122342 states. [2018-11-06 22:07:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122342 states to 122342 states and 136739 transitions. [2018-11-06 22:07:04,949 INFO L78 Accepts]: Start accepts. Automaton has 122342 states and 136739 transitions. Word has length 734 [2018-11-06 22:07:04,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:07:04,950 INFO L480 AbstractCegarLoop]: Abstraction has 122342 states and 136739 transitions. [2018-11-06 22:07:04,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 22:07:04,951 INFO L276 IsEmpty]: Start isEmpty. Operand 122342 states and 136739 transitions. [2018-11-06 22:07:04,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2018-11-06 22:07:04,963 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:07:04,964 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:07:04,965 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:07:04,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:07:04,965 INFO L82 PathProgramCache]: Analyzing trace with hash -295125564, now seen corresponding path program 1 times [2018-11-06 22:07:04,965 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:07:04,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:07:04,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:07:04,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:07:04,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:07:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:07:06,024 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 413 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-11-06 22:07:06,024 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:07:06,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:07:06,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:07:06,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:07:06,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:07:06,026 INFO L87 Difference]: Start difference. First operand 122342 states and 136739 transitions. Second operand 4 states. [2018-11-06 22:07:22,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:07:22,274 INFO L93 Difference]: Finished difference Result 360967 states and 407433 transitions. [2018-11-06 22:07:22,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:07:22,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 895 [2018-11-06 22:07:22,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:07:22,653 INFO L225 Difference]: With dead ends: 360967 [2018-11-06 22:07:22,653 INFO L226 Difference]: Without dead ends: 239993 [2018-11-06 22:07:22,723 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:07:22,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239993 states. [2018-11-06 22:07:26,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239993 to 230269. [2018-11-06 22:07:26,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230269 states. [2018-11-06 22:07:26,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230269 states to 230269 states and 254700 transitions. [2018-11-06 22:07:26,587 INFO L78 Accepts]: Start accepts. Automaton has 230269 states and 254700 transitions. Word has length 895 [2018-11-06 22:07:26,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:07:26,589 INFO L480 AbstractCegarLoop]: Abstraction has 230269 states and 254700 transitions. [2018-11-06 22:07:26,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:07:26,589 INFO L276 IsEmpty]: Start isEmpty. Operand 230269 states and 254700 transitions. [2018-11-06 22:07:26,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2018-11-06 22:07:26,604 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:07:26,605 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:07:26,605 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:07:26,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:07:26,606 INFO L82 PathProgramCache]: Analyzing trace with hash 640724884, now seen corresponding path program 1 times [2018-11-06 22:07:26,606 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:07:26,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:07:26,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:07:26,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:07:26,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:07:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:07:29,037 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 413 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-11-06 22:07:29,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:07:29,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:07:29,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:07:29,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:07:29,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:07:29,039 INFO L87 Difference]: Start difference. First operand 230269 states and 254700 transitions. Second operand 4 states. Received shutdown request... [2018-11-06 22:07:30,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 22:07:30,084 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 22:07:30,089 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 22:07:30,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:07:30 BoogieIcfgContainer [2018-11-06 22:07:30,089 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:07:30,090 INFO L168 Benchmark]: Toolchain (without parser) took 227708.94 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 299.2 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-06 22:07:30,091 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:07:30,092 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3424.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.9 MB). Peak memory consumption was 391.9 MB. Max. memory is 7.1 GB. [2018-11-06 22:07:30,093 INFO L168 Benchmark]: Boogie Procedure Inliner took 1181.80 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 861.9 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. [2018-11-06 22:07:30,094 INFO L168 Benchmark]: Boogie Preprocessor took 651.89 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 98.5 MB). Peak memory consumption was 98.5 MB. Max. memory is 7.1 GB. [2018-11-06 22:07:30,094 INFO L168 Benchmark]: RCFGBuilder took 17080.02 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 304.6 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -380.9 MB). Peak memory consumption was 818.2 MB. Max. memory is 7.1 GB. [2018-11-06 22:07:30,095 INFO L168 Benchmark]: TraceAbstraction took 205365.24 ms. Allocated memory was 2.7 GB in the beginning and 3.3 GB in the end (delta: 623.9 MB). Free memory was 2.4 GB in the beginning and 1.1 GB in the end (delta: 1.3 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-06 22:07:30,101 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3424.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.9 MB). Peak memory consumption was 391.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1181.80 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 861.9 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 651.89 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 98.5 MB). Peak memory consumption was 98.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17080.02 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 304.6 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -380.9 MB). Peak memory consumption was 818.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205365.24 ms. Allocated memory was 2.7 GB in the beginning and 3.3 GB in the end (delta: 623.9 MB). Free memory was 2.4 GB in the beginning and 1.1 GB in the end (delta: 1.3 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 112). Cancelled while BasicCegarLoop was constructing difference of abstraction (230269states) and FLOYD_HOARE automaton (currently 3 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (509 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 205.2s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 182.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9790 SDtfs, 50209 SDslu, 4360 SDs, 0 SdLazy, 101378 SolverSat, 21250 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 148.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1394 GetRequests, 1346 SyntacticMatches, 14 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230269occurred in iteration=8, 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: 11.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 137432 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 5642 NumberOfCodeBlocks, 5642 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 5630 ConstructedInterpolants, 0 QuantifiedInterpolants, 9020166 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1628 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 3401/3474 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown