java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label57_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 01:10:42,185 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 01:10:42,187 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 01:10:42,200 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 01:10:42,201 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 01:10:42,202 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 01:10:42,206 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 01:10:42,208 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 01:10:42,209 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 01:10:42,212 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 01:10:42,213 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 01:10:42,214 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 01:10:42,215 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 01:10:42,216 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 01:10:42,217 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 01:10:42,218 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 01:10:42,219 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 01:10:42,221 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 01:10:42,223 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 01:10:42,224 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 01:10:42,226 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 01:10:42,227 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 01:10:42,229 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 01:10:42,230 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 01:10:42,230 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 01:10:42,231 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 01:10:42,232 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 01:10:42,233 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 01:10:42,233 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 01:10:42,235 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 01:10:42,235 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 01:10:42,236 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 01:10:42,236 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 01:10:42,236 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 01:10:42,237 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 01:10:42,238 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 01:10:42,238 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 [2018-07-24 01:10:42,254 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 01:10:42,254 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 01:10:42,255 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 01:10:42,255 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-24 01:10:42,256 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-24 01:10:42,256 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-24 01:10:42,256 INFO L133 SettingsManager]: * Use SBE=true [2018-07-24 01:10:42,257 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 01:10:42,257 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 01:10:42,257 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 01:10:42,258 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 01:10:42,259 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 01:10:42,259 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 01:10:42,259 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 01:10:42,259 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 01:10:42,260 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 01:10:42,260 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 01:10:42,260 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 01:10:42,260 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 01:10:42,261 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 01:10:42,261 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 01:10:42,261 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 01:10:42,261 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 01:10:42,261 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-24 01:10:42,262 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 01:10:42,262 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 01:10:42,262 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 01:10:42,262 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 01:10:42,317 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 01:10:42,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 01:10:42,343 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 01:10:42,345 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 01:10:42,345 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 01:10:42,346 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label57_false-unreach-call.c [2018-07-24 01:10:42,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa1999205/56f719641a5645e78d274f92ed83e929/FLAGefc65d2c7 [2018-07-24 01:10:43,103 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 01:10:43,104 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label57_false-unreach-call.c [2018-07-24 01:10:43,137 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa1999205/56f719641a5645e78d274f92ed83e929/FLAGefc65d2c7 [2018-07-24 01:10:43,160 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa1999205/56f719641a5645e78d274f92ed83e929 [2018-07-24 01:10:43,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 01:10:43,175 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 01:10:43,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 01:10:43,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 01:10:43,186 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 01:10:43,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:10:43" (1/1) ... [2018-07-24 01:10:43,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e68d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:10:43, skipping insertion in model container [2018-07-24 01:10:43,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:10:43" (1/1) ... [2018-07-24 01:10:43,512 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 01:10:44,379 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 01:10:44,397 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 01:10:44,981 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 01:10:45,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:10:45 WrapperNode [2018-07-24 01:10:45,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 01:10:45,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 01:10:45,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 01:10:45,153 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 01:10:45,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:10:45" (1/1) ... [2018-07-24 01:10:45,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:10:45" (1/1) ... [2018-07-24 01:10:45,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 01:10:45,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 01:10:45,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 01:10:45,490 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 01:10:46,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:10:45" (1/1) ... [2018-07-24 01:10:46,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:10:45" (1/1) ... [2018-07-24 01:10:46,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:10:45" (1/1) ... [2018-07-24 01:10:46,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:10:45" (1/1) ... [2018-07-24 01:10:46,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:10:45" (1/1) ... [2018-07-24 01:10:46,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:10:45" (1/1) ... [2018-07-24 01:10:46,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:10:45" (1/1) ... [2018-07-24 01:10:46,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 01:10:46,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 01:10:46,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 01:10:46,313 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 01:10:46,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:10:45" (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 [2018-07-24 01:10:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-24 01:10:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 01:10:46,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 01:10:54,239 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 01:10:54,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:10:54 BoogieIcfgContainer [2018-07-24 01:10:54,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 01:10:54,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 01:10:54,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 01:10:54,245 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 01:10:54,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 01:10:43" (1/3) ... [2018-07-24 01:10:54,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bb7f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:10:54, skipping insertion in model container [2018-07-24 01:10:54,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:10:45" (2/3) ... [2018-07-24 01:10:54,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bb7f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:10:54, skipping insertion in model container [2018-07-24 01:10:54,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:10:54" (3/3) ... [2018-07-24 01:10:54,250 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label57_false-unreach-call.c [2018-07-24 01:10:54,260 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 01:10:54,271 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 01:10:54,337 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 01:10:54,338 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 01:10:54,338 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 01:10:54,338 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 01:10:54,338 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 01:10:54,338 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 01:10:54,339 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 01:10:54,339 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 01:10:54,339 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 01:10:54,373 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-07-24 01:10:54,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-24 01:10:54,380 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:10:54,381 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:10:54,382 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:10:54,386 INFO L82 PathProgramCache]: Analyzing trace with hash 384191218, now seen corresponding path program 1 times [2018-07-24 01:10:54,388 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:10:54,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:10:54,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:10:54,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:10:54,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:10:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:10:54,745 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-07-24 01:10:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 01:10:54,751 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:10:54,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:10:54,756 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:10:54,772 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:10:54,773 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:10:54,776 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-07-24 01:11:05,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:11:05,795 INFO L93 Difference]: Finished difference Result 2918 states and 5666 transitions. [2018-07-24 01:11:05,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:11:05,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-07-24 01:11:05,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:11:05,840 INFO L225 Difference]: With dead ends: 2918 [2018-07-24 01:11:05,841 INFO L226 Difference]: Without dead ends: 2153 [2018-07-24 01:11:05,850 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:11:05,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2018-07-24 01:11:06,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2018-07-24 01:11:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2018-07-24 01:11:06,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3619 transitions. [2018-07-24 01:11:06,040 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3619 transitions. Word has length 9 [2018-07-24 01:11:06,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:11:06,040 INFO L471 AbstractCegarLoop]: Abstraction has 2153 states and 3619 transitions. [2018-07-24 01:11:06,040 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:11:06,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3619 transitions. [2018-07-24 01:11:06,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-24 01:11:06,044 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:11:06,045 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 01:11:06,045 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:11:06,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1377418497, now seen corresponding path program 1 times [2018-07-24 01:11:06,046 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:11:06,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:11:06,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:11:06,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:11:06,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:11:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:11:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 01:11:06,356 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:11:06,356 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:11:06,359 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:11:06,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:11:06,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:11:06,360 INFO L87 Difference]: Start difference. First operand 2153 states and 3619 transitions. Second operand 4 states. [2018-07-24 01:11:12,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:11:12,510 INFO L93 Difference]: Finished difference Result 6377 states and 10776 transitions. [2018-07-24 01:11:12,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:11:12,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2018-07-24 01:11:12,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:11:12,543 INFO L225 Difference]: With dead ends: 6377 [2018-07-24 01:11:12,544 INFO L226 Difference]: Without dead ends: 4226 [2018-07-24 01:11:12,553 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:11:12,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2018-07-24 01:11:12,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4226. [2018-07-24 01:11:12,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4226 states. [2018-07-24 01:11:12,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 6043 transitions. [2018-07-24 01:11:12,634 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 6043 transitions. Word has length 75 [2018-07-24 01:11:12,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:11:12,635 INFO L471 AbstractCegarLoop]: Abstraction has 4226 states and 6043 transitions. [2018-07-24 01:11:12,635 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:11:12,635 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 6043 transitions. [2018-07-24 01:11:12,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-24 01:11:12,645 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:11:12,645 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:11:12,646 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:11:12,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1133553946, now seen corresponding path program 1 times [2018-07-24 01:11:12,646 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:11:12,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:11:12,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:11:12,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:11:12,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:11:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:11:13,268 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 01:11:13,268 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:11:13,268 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 01:11:13,269 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 01:11:13,269 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 01:11:13,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-24 01:11:13,270 INFO L87 Difference]: Start difference. First operand 4226 states and 6043 transitions. Second operand 5 states. [2018-07-24 01:11:22,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:11:22,749 INFO L93 Difference]: Finished difference Result 13287 states and 18113 transitions. [2018-07-24 01:11:22,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 01:11:22,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2018-07-24 01:11:22,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:11:22,796 INFO L225 Difference]: With dead ends: 13287 [2018-07-24 01:11:22,797 INFO L226 Difference]: Without dead ends: 9063 [2018-07-24 01:11:22,802 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-24 01:11:22,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9063 states. [2018-07-24 01:11:22,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9063 to 8372. [2018-07-24 01:11:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8372 states. [2018-07-24 01:11:22,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8372 states to 8372 states and 10467 transitions. [2018-07-24 01:11:22,950 INFO L78 Accepts]: Start accepts. Automaton has 8372 states and 10467 transitions. Word has length 194 [2018-07-24 01:11:22,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:11:22,951 INFO L471 AbstractCegarLoop]: Abstraction has 8372 states and 10467 transitions. [2018-07-24 01:11:22,951 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 01:11:22,951 INFO L276 IsEmpty]: Start isEmpty. Operand 8372 states and 10467 transitions. [2018-07-24 01:11:22,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-07-24 01:11:22,962 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:11:22,963 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 01:11:22,963 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:11:22,963 INFO L82 PathProgramCache]: Analyzing trace with hash 897580097, now seen corresponding path program 1 times [2018-07-24 01:11:22,963 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:11:22,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:11:22,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:11:22,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:11:22,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:11:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:11:23,550 WARN L169 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-07-24 01:11:23,848 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 244 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-07-24 01:11:23,849 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 01:11:23,849 INFO L221 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 [2018-07-24 01:11:23,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:11:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:11:24,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 01:11:24,165 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-07-24 01:11:24,187 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 01:11:24,188 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-24 01:11:24,189 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 01:11:24,189 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 01:11:24,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-24 01:11:24,190 INFO L87 Difference]: Start difference. First operand 8372 states and 10467 transitions. Second operand 6 states. [2018-07-24 01:11:35,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:11:35,330 INFO L93 Difference]: Finished difference Result 26432 states and 32780 transitions. [2018-07-24 01:11:35,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 01:11:35,332 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 377 [2018-07-24 01:11:35,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:11:35,395 INFO L225 Difference]: With dead ends: 26432 [2018-07-24 01:11:35,395 INFO L226 Difference]: Without dead ends: 15986 [2018-07-24 01:11:35,411 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 377 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-07-24 01:11:35,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15986 states. [2018-07-24 01:11:35,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15986 to 11810. [2018-07-24 01:11:35,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11810 states. [2018-07-24 01:11:35,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11810 states to 11810 states and 13599 transitions. [2018-07-24 01:11:35,652 INFO L78 Accepts]: Start accepts. Automaton has 11810 states and 13599 transitions. Word has length 377 [2018-07-24 01:11:35,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:11:35,653 INFO L471 AbstractCegarLoop]: Abstraction has 11810 states and 13599 transitions. [2018-07-24 01:11:35,653 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 01:11:35,653 INFO L276 IsEmpty]: Start isEmpty. Operand 11810 states and 13599 transitions. [2018-07-24 01:11:35,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-24 01:11:35,660 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:11:35,661 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:11:35,661 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:11:35,661 INFO L82 PathProgramCache]: Analyzing trace with hash 264855007, now seen corresponding path program 1 times [2018-07-24 01:11:35,662 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:11:35,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:11:35,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:11:35,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:11:35,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:11:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:11:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 01:11:36,129 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:11:36,130 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:11:36,131 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:11:36,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:11:36,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:11:36,131 INFO L87 Difference]: Start difference. First operand 11810 states and 13599 transitions. Second operand 3 states. [2018-07-24 01:11:39,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:11:39,635 INFO L93 Difference]: Finished difference Result 32601 states and 37900 transitions. [2018-07-24 01:11:39,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:11:39,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 382 [2018-07-24 01:11:39,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:11:39,671 INFO L225 Difference]: With dead ends: 32601 [2018-07-24 01:11:39,671 INFO L226 Difference]: Without dead ends: 20793 [2018-07-24 01:11:39,686 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:11:39,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20793 states. [2018-07-24 01:11:39,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20793 to 20102. [2018-07-24 01:11:39,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20102 states. [2018-07-24 01:11:39,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20102 states to 20102 states and 23171 transitions. [2018-07-24 01:11:39,956 INFO L78 Accepts]: Start accepts. Automaton has 20102 states and 23171 transitions. Word has length 382 [2018-07-24 01:11:39,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:11:39,958 INFO L471 AbstractCegarLoop]: Abstraction has 20102 states and 23171 transitions. [2018-07-24 01:11:39,958 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:11:39,958 INFO L276 IsEmpty]: Start isEmpty. Operand 20102 states and 23171 transitions. [2018-07-24 01:11:39,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2018-07-24 01:11:39,967 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:11:39,967 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:11:39,969 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:11:39,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1642645853, now seen corresponding path program 1 times [2018-07-24 01:11:39,969 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:11:39,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:11:39,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:11:39,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:11:39,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:11:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:11:40,279 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-07-24 01:11:40,280 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:11:40,280 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:11:40,281 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:11:40,281 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:11:40,281 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:11:40,281 INFO L87 Difference]: Start difference. First operand 20102 states and 23171 transitions. Second operand 3 states. [2018-07-24 01:11:43,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:11:43,651 INFO L93 Difference]: Finished difference Result 47803 states and 55025 transitions. [2018-07-24 01:11:43,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:11:43,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 417 [2018-07-24 01:11:43,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:11:43,690 INFO L225 Difference]: With dead ends: 47803 [2018-07-24 01:11:43,691 INFO L226 Difference]: Without dead ends: 27703 [2018-07-24 01:11:43,713 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:11:43,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27703 states. [2018-07-24 01:11:44,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27703 to 27703. [2018-07-24 01:11:44,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27703 states. [2018-07-24 01:11:44,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27703 states to 27703 states and 31043 transitions. [2018-07-24 01:11:44,043 INFO L78 Accepts]: Start accepts. Automaton has 27703 states and 31043 transitions. Word has length 417 [2018-07-24 01:11:44,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:11:44,044 INFO L471 AbstractCegarLoop]: Abstraction has 27703 states and 31043 transitions. [2018-07-24 01:11:44,045 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:11:44,045 INFO L276 IsEmpty]: Start isEmpty. Operand 27703 states and 31043 transitions. [2018-07-24 01:11:44,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2018-07-24 01:11:44,062 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:11:44,062 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 01:11:44,062 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:11:44,063 INFO L82 PathProgramCache]: Analyzing trace with hash 66175646, now seen corresponding path program 1 times [2018-07-24 01:11:44,063 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:11:44,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:11:44,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:11:44,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:11:44,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:11:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:11:44,649 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 413 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 01:11:44,650 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:11:44,650 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 01:11:44,651 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:11:44,651 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:11:44,651 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:11:44,651 INFO L87 Difference]: Start difference. First operand 27703 states and 31043 transitions. Second operand 4 states. [2018-07-24 01:11:51,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:11:51,156 INFO L93 Difference]: Finished difference Result 74752 states and 84041 transitions. [2018-07-24 01:11:51,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:11:51,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 603 [2018-07-24 01:11:51,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:11:51,220 INFO L225 Difference]: With dead ends: 74752 [2018-07-24 01:11:51,221 INFO L226 Difference]: Without dead ends: 47051 [2018-07-24 01:11:51,249 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:11:51,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47051 states. [2018-07-24 01:11:51,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47051 to 46360. [2018-07-24 01:11:51,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46360 states. [2018-07-24 01:11:51,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46360 states to 46360 states and 51159 transitions. [2018-07-24 01:11:51,799 INFO L78 Accepts]: Start accepts. Automaton has 46360 states and 51159 transitions. Word has length 603 [2018-07-24 01:11:51,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:11:51,800 INFO L471 AbstractCegarLoop]: Abstraction has 46360 states and 51159 transitions. [2018-07-24 01:11:51,800 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:11:51,801 INFO L276 IsEmpty]: Start isEmpty. Operand 46360 states and 51159 transitions. [2018-07-24 01:11:51,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2018-07-24 01:11:51,835 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:11:51,836 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:11:51,836 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:11:51,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1424915838, now seen corresponding path program 1 times [2018-07-24 01:11:51,837 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:11:51,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:11:51,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:11:51,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:11:51,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:11:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:11:52,496 WARN L169 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-07-24 01:11:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 655 backedges. 562 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 01:11:52,677 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:11:52,677 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 01:11:52,678 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:11:52,678 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:11:52,678 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:11:52,679 INFO L87 Difference]: Start difference. First operand 46360 states and 51159 transitions. Second operand 4 states. [2018-07-24 01:11:59,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:11:59,268 INFO L93 Difference]: Finished difference Result 102392 states and 113703 transitions. [2018-07-24 01:11:59,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:11:59,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 681 [2018-07-24 01:11:59,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:11:59,324 INFO L225 Difference]: With dead ends: 102392 [2018-07-24 01:11:59,325 INFO L226 Difference]: Without dead ends: 56034 [2018-07-24 01:11:59,357 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:11:59,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56034 states. [2018-07-24 01:11:59,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56034 to 53270. [2018-07-24 01:11:59,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53270 states. [2018-07-24 01:11:59,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53270 states to 53270 states and 57974 transitions. [2018-07-24 01:11:59,964 INFO L78 Accepts]: Start accepts. Automaton has 53270 states and 57974 transitions. Word has length 681 [2018-07-24 01:11:59,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:11:59,965 INFO L471 AbstractCegarLoop]: Abstraction has 53270 states and 57974 transitions. [2018-07-24 01:11:59,965 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:11:59,965 INFO L276 IsEmpty]: Start isEmpty. Operand 53270 states and 57974 transitions. [2018-07-24 01:11:59,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2018-07-24 01:11:59,997 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:11:59,998 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 01:11:59,999 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:11:59,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1697140653, now seen corresponding path program 1 times [2018-07-24 01:11:59,999 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:11:59,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:12:00,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:12:00,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:12:00,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:12:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:12:01,214 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 36 proven. 572 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-07-24 01:12:01,214 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 01:12:01,215 INFO L221 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 [2018-07-24 01:12:01,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:12:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:12:01,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 01:12:01,657 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2018-07-24 01:12:01,678 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 01:12:01,679 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-07-24 01:12:01,680 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 01:12:01,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 01:12:01,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-24 01:12:01,680 INFO L87 Difference]: Start difference. First operand 53270 states and 57974 transitions. Second operand 8 states. [2018-07-24 01:12:18,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:12:18,876 INFO L93 Difference]: Finished difference Result 132105 states and 144811 transitions. [2018-07-24 01:12:18,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 01:12:18,876 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 700 [2018-07-24 01:12:18,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:12:18,955 INFO L225 Difference]: With dead ends: 132105 [2018-07-24 01:12:18,955 INFO L226 Difference]: Without dead ends: 68452 [2018-07-24 01:12:18,994 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 703 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-07-24 01:12:19,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68452 states. [2018-07-24 01:12:19,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68452 to 66379. [2018-07-24 01:12:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66379 states. [2018-07-24 01:12:19,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66379 states to 66379 states and 69180 transitions. [2018-07-24 01:12:19,965 INFO L78 Accepts]: Start accepts. Automaton has 66379 states and 69180 transitions. Word has length 700 [2018-07-24 01:12:19,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:12:19,967 INFO L471 AbstractCegarLoop]: Abstraction has 66379 states and 69180 transitions. [2018-07-24 01:12:19,967 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 01:12:19,967 INFO L276 IsEmpty]: Start isEmpty. Operand 66379 states and 69180 transitions. [2018-07-24 01:12:20,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1055 [2018-07-24 01:12:20,040 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:12:20,041 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:12:20,041 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:12:20,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1814826830, now seen corresponding path program 1 times [2018-07-24 01:12:20,042 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:12:20,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:12:20,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:12:20,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:12:20,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:12:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:12:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 752 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2018-07-24 01:12:21,251 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:12:21,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 01:12:21,252 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:12:21,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:12:21,253 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:12:21,253 INFO L87 Difference]: Start difference. First operand 66379 states and 69180 transitions. Second operand 4 states. [2018-07-24 01:12:27,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:12:27,761 INFO L93 Difference]: Finished difference Result 163159 states and 171228 transitions. [2018-07-24 01:12:27,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:12:27,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1054 [2018-07-24 01:12:27,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:12:27,870 INFO L225 Difference]: With dead ends: 163159 [2018-07-24 01:12:27,870 INFO L226 Difference]: Without dead ends: 85707 [2018-07-24 01:12:27,918 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:12:27,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85707 states. [2018-07-24 01:12:28,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85707 to 84325. [2018-07-24 01:12:28,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84325 states. [2018-07-24 01:12:28,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84325 states to 84325 states and 87197 transitions. [2018-07-24 01:12:28,864 INFO L78 Accepts]: Start accepts. Automaton has 84325 states and 87197 transitions. Word has length 1054 [2018-07-24 01:12:28,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:12:28,865 INFO L471 AbstractCegarLoop]: Abstraction has 84325 states and 87197 transitions. [2018-07-24 01:12:28,865 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:12:28,865 INFO L276 IsEmpty]: Start isEmpty. Operand 84325 states and 87197 transitions. [2018-07-24 01:12:28,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1270 [2018-07-24 01:12:28,937 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:12:28,940 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 01:12:28,940 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:12:28,940 INFO L82 PathProgramCache]: Analyzing trace with hash -66949218, now seen corresponding path program 1 times [2018-07-24 01:12:28,940 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:12:28,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:12:28,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:12:28,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:12:28,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:12:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:12:31,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 1823 proven. 0 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2018-07-24 01:12:31,218 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:12:31,218 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 01:12:31,219 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:12:31,219 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:12:31,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:12:31,219 INFO L87 Difference]: Start difference. First operand 84325 states and 87197 transitions. Second operand 4 states. [2018-07-24 01:12:35,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:12:35,682 INFO L93 Difference]: Finished difference Result 168648 states and 174392 transitions. [2018-07-24 01:12:35,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:12:35,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1269 [2018-07-24 01:12:35,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:12:35,777 INFO L225 Difference]: With dead ends: 168648 [2018-07-24 01:12:35,777 INFO L226 Difference]: Without dead ends: 84325 [2018-07-24 01:12:35,817 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:12:35,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84325 states. [2018-07-24 01:12:36,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84325 to 84325. [2018-07-24 01:12:36,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84325 states. [2018-07-24 01:12:36,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84325 states to 84325 states and 86939 transitions. [2018-07-24 01:12:36,866 INFO L78 Accepts]: Start accepts. Automaton has 84325 states and 86939 transitions. Word has length 1269 [2018-07-24 01:12:36,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:12:36,867 INFO L471 AbstractCegarLoop]: Abstraction has 84325 states and 86939 transitions. [2018-07-24 01:12:36,867 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:12:36,867 INFO L276 IsEmpty]: Start isEmpty. Operand 84325 states and 86939 transitions. [2018-07-24 01:12:36,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1330 [2018-07-24 01:12:36,926 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:12:36,927 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 01:12:36,927 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:12:36,927 INFO L82 PathProgramCache]: Analyzing trace with hash -919677156, now seen corresponding path program 1 times [2018-07-24 01:12:36,928 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:12:36,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:12:36,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:12:36,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:12:36,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:12:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:12:37,759 WARN L169 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 01:12:37,948 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 01:12:38,146 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 01:12:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2819 backedges. 1771 proven. 0 refuted. 0 times theorem prover too weak. 1048 trivial. 0 not checked. [2018-07-24 01:12:39,935 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:12:39,935 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 01:12:39,936 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 01:12:39,936 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 01:12:39,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 01:12:39,936 INFO L87 Difference]: Start difference. First operand 84325 states and 86939 transitions. Second operand 6 states. [2018-07-24 01:12:48,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:12:48,304 INFO L93 Difference]: Finished difference Result 175574 states and 180897 transitions. [2018-07-24 01:12:48,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 01:12:48,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1329 [2018-07-24 01:12:48,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:12:48,391 INFO L225 Difference]: With dead ends: 175574 [2018-07-24 01:12:48,392 INFO L226 Difference]: Without dead ends: 91251 [2018-07-24 01:12:48,436 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-07-24 01:12:48,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91251 states. [2018-07-24 01:12:49,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91251 to 84325. [2018-07-24 01:12:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84325 states. [2018-07-24 01:12:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84325 states to 84325 states and 86928 transitions. [2018-07-24 01:12:49,631 INFO L78 Accepts]: Start accepts. Automaton has 84325 states and 86928 transitions. Word has length 1329 [2018-07-24 01:12:49,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:12:49,632 INFO L471 AbstractCegarLoop]: Abstraction has 84325 states and 86928 transitions. [2018-07-24 01:12:49,632 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 01:12:49,632 INFO L276 IsEmpty]: Start isEmpty. Operand 84325 states and 86928 transitions. [2018-07-24 01:12:49,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1356 [2018-07-24 01:12:49,684 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:12:49,685 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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] [2018-07-24 01:12:49,685 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:12:49,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1604238790, now seen corresponding path program 1 times [2018-07-24 01:12:49,685 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:12:49,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:12:49,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:12:49,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:12:49,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:12:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:12:51,110 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-24 01:12:54,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 294 proven. 1808 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-07-24 01:12:54,773 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 01:12:54,773 INFO L221 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 [2018-07-24 01:12:54,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:12:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:12:55,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 01:12:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 989 proven. 0 refuted. 0 times theorem prover too weak. 1252 trivial. 0 not checked. [2018-07-24 01:12:56,741 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 01:12:56,741 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2018-07-24 01:12:56,743 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 01:12:56,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 01:12:56,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-24 01:12:56,743 INFO L87 Difference]: Start difference. First operand 84325 states and 86928 transitions. Second operand 11 states. [2018-07-24 01:13:26,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:13:26,772 INFO L93 Difference]: Finished difference Result 210652 states and 217597 transitions. [2018-07-24 01:13:26,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-24 01:13:26,773 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1355 [2018-07-24 01:13:26,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:13:26,892 INFO L225 Difference]: With dead ends: 210652 [2018-07-24 01:13:26,892 INFO L226 Difference]: Without dead ends: 126329 [2018-07-24 01:13:26,926 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1384 GetRequests, 1354 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2018-07-24 01:13:27,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126329 states. [2018-07-24 01:13:27,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126329 to 98143. [2018-07-24 01:13:27,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98143 states. [2018-07-24 01:13:27,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98143 states to 98143 states and 100823 transitions. [2018-07-24 01:13:27,987 INFO L78 Accepts]: Start accepts. Automaton has 98143 states and 100823 transitions. Word has length 1355 [2018-07-24 01:13:27,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:13:27,988 INFO L471 AbstractCegarLoop]: Abstraction has 98143 states and 100823 transitions. [2018-07-24 01:13:27,988 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 01:13:27,988 INFO L276 IsEmpty]: Start isEmpty. Operand 98143 states and 100823 transitions. [2018-07-24 01:13:28,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1877 [2018-07-24 01:13:28,041 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:13:28,042 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:13:28,042 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:13:28,043 INFO L82 PathProgramCache]: Analyzing trace with hash -395942207, now seen corresponding path program 1 times [2018-07-24 01:13:28,043 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:13:28,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:13:28,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:13:28,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:13:28,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:13:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:13:29,485 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-07-24 01:13:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3733 backedges. 2514 proven. 0 refuted. 0 times theorem prover too weak. 1219 trivial. 0 not checked. [2018-07-24 01:13:31,058 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:13:31,059 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 01:13:31,060 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:13:31,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:13:31,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:13:31,060 INFO L87 Difference]: Start difference. First operand 98143 states and 100823 transitions. Second operand 4 states. [2018-07-24 01:13:36,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:13:36,460 INFO L93 Difference]: Finished difference Result 196971 states and 202333 transitions. [2018-07-24 01:13:36,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:13:36,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1876 [2018-07-24 01:13:36,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:13:36,568 INFO L225 Difference]: With dead ends: 196971 [2018-07-24 01:13:36,569 INFO L226 Difference]: Without dead ends: 98830 [2018-07-24 01:13:36,615 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:13:36,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98830 states. [2018-07-24 01:13:37,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98830 to 96066. [2018-07-24 01:13:37,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96066 states. [2018-07-24 01:13:37,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96066 states to 96066 states and 98514 transitions. [2018-07-24 01:13:37,437 INFO L78 Accepts]: Start accepts. Automaton has 96066 states and 98514 transitions. Word has length 1876 [2018-07-24 01:13:37,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:13:37,438 INFO L471 AbstractCegarLoop]: Abstraction has 96066 states and 98514 transitions. [2018-07-24 01:13:37,438 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:13:37,438 INFO L276 IsEmpty]: Start isEmpty. Operand 96066 states and 98514 transitions. [2018-07-24 01:13:37,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1948 [2018-07-24 01:13:37,499 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:13:37,501 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:13:37,501 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:13:37,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1809646054, now seen corresponding path program 1 times [2018-07-24 01:13:37,502 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:13:37,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:13:37,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:13:37,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:13:37,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:13:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:13:40,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3761 backedges. 2528 proven. 0 refuted. 0 times theorem prover too weak. 1233 trivial. 0 not checked. [2018-07-24 01:13:40,716 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:13:40,716 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 01:13:40,717 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:13:40,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:13:40,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:13:40,718 INFO L87 Difference]: Start difference. First operand 96066 states and 98514 transitions. Second operand 4 states. [2018-07-24 01:13:45,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:13:45,313 INFO L93 Difference]: Finished difference Result 199040 states and 204270 transitions. [2018-07-24 01:13:45,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:13:45,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1947 [2018-07-24 01:13:45,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:13:45,400 INFO L225 Difference]: With dead ends: 199040 [2018-07-24 01:13:45,400 INFO L226 Difference]: Without dead ends: 102976 [2018-07-24 01:13:45,440 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:13:45,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102976 states. [2018-07-24 01:13:46,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102976 to 100212. [2018-07-24 01:13:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100212 states. [2018-07-24 01:13:46,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100212 states to 100212 states and 102551 transitions. [2018-07-24 01:13:46,482 INFO L78 Accepts]: Start accepts. Automaton has 100212 states and 102551 transitions. Word has length 1947 [2018-07-24 01:13:46,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:13:46,483 INFO L471 AbstractCegarLoop]: Abstraction has 100212 states and 102551 transitions. [2018-07-24 01:13:46,483 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:13:46,483 INFO L276 IsEmpty]: Start isEmpty. Operand 100212 states and 102551 transitions. [2018-07-24 01:13:46,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2095 [2018-07-24 01:13:46,548 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:13:46,549 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 01:13:46,549 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:13:46,549 INFO L82 PathProgramCache]: Analyzing trace with hash 278643882, now seen corresponding path program 1 times [2018-07-24 01:13:46,549 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:13:46,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:13:46,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:13:46,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:13:46,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:13:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:13:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 3550 proven. 108 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked. [2018-07-24 01:13:50,063 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 01:13:50,063 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 01:13:50,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:13:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:13:50,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 01:13:50,992 WARN L169 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 18 [2018-07-24 01:13:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 2765 proven. 0 refuted. 0 times theorem prover too weak. 1791 trivial. 0 not checked. [2018-07-24 01:13:55,992 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 01:13:55,993 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-07-24 01:13:55,995 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 01:13:55,995 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 01:13:55,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 01:13:55,995 INFO L87 Difference]: Start difference. First operand 100212 states and 102551 transitions. Second operand 6 states. [2018-07-24 01:14:15,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:14:15,029 INFO L93 Difference]: Finished difference Result 228754 states and 234183 transitions. [2018-07-24 01:14:15,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 01:14:15,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 2094 [2018-07-24 01:14:15,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:14:15,160 INFO L225 Difference]: With dead ends: 228754 [2018-07-24 01:14:15,160 INFO L226 Difference]: Without dead ends: 128544 [2018-07-24 01:14:15,215 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2104 GetRequests, 2097 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-07-24 01:14:15,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128544 states. [2018-07-24 01:14:16,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128544 to 125089. [2018-07-24 01:14:16,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125089 states. [2018-07-24 01:14:16,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125089 states to 125089 states and 127312 transitions. [2018-07-24 01:14:16,391 INFO L78 Accepts]: Start accepts. Automaton has 125089 states and 127312 transitions. Word has length 2094 [2018-07-24 01:14:16,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:14:16,392 INFO L471 AbstractCegarLoop]: Abstraction has 125089 states and 127312 transitions. [2018-07-24 01:14:16,392 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 01:14:16,392 INFO L276 IsEmpty]: Start isEmpty. Operand 125089 states and 127312 transitions. [2018-07-24 01:14:16,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2116 [2018-07-24 01:14:16,858 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:14:16,859 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-07-24 01:14:16,859 INFO L414 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:14:16,860 INFO L82 PathProgramCache]: Analyzing trace with hash -469619036, now seen corresponding path program 1 times [2018-07-24 01:14:16,860 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:14:16,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:14:16,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:14:16,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:14:16,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:14:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:14:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4598 backedges. 2786 proven. 0 refuted. 0 times theorem prover too weak. 1812 trivial. 0 not checked. [2018-07-24 01:14:20,306 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:14:20,307 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 01:14:20,308 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:14:20,308 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:14:20,308 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:14:20,308 INFO L87 Difference]: Start difference. First operand 125089 states and 127312 transitions. Second operand 4 states. [2018-07-24 01:14:25,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:14:25,315 INFO L93 Difference]: Finished difference Result 246029 states and 250394 transitions. [2018-07-24 01:14:25,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:14:25,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2115 [2018-07-24 01:14:25,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:14:25,427 INFO L225 Difference]: With dead ends: 246029 [2018-07-24 01:14:25,428 INFO L226 Difference]: Without dead ends: 115403 [2018-07-24 01:14:25,482 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:14:25,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115403 states. [2018-07-24 01:14:26,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115403 to 112553. [2018-07-24 01:14:26,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112553 states. [2018-07-24 01:14:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112553 states to 112553 states and 113708 transitions. [2018-07-24 01:14:26,873 INFO L78 Accepts]: Start accepts. Automaton has 112553 states and 113708 transitions. Word has length 2115 [2018-07-24 01:14:26,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:14:26,875 INFO L471 AbstractCegarLoop]: Abstraction has 112553 states and 113708 transitions. [2018-07-24 01:14:26,875 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:14:26,875 INFO L276 IsEmpty]: Start isEmpty. Operand 112553 states and 113708 transitions. [2018-07-24 01:14:26,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2122 [2018-07-24 01:14:26,937 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:14:26,938 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 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] [2018-07-24 01:14:26,938 INFO L414 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:14:26,938 INFO L82 PathProgramCache]: Analyzing trace with hash 768317699, now seen corresponding path program 1 times [2018-07-24 01:14:26,939 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:14:26,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:14:26,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:14:26,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:14:26,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:14:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:14:28,284 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 01:14:28,501 WARN L169 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 15 Received shutdown request... [2018-07-24 01:14:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4654 backedges. 2505 proven. 1253 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2018-07-24 01:14:34,076 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 01:14:34,076 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 01:14:34,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:14:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:14:34,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 01:14:34,677 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 01:14:34,879 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 01:14:34,879 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 01:14:34,884 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 01:14:34,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 01:14:34 BoogieIcfgContainer [2018-07-24 01:14:34,885 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 01:14:34,886 INFO L168 Benchmark]: Toolchain (without parser) took 231711.96 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -100.0 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-07-24 01:14:34,887 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-07-24 01:14:34,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1974.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. [2018-07-24 01:14:34,888 INFO L168 Benchmark]: Boogie Procedure Inliner took 338.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 01:14:34,889 INFO L168 Benchmark]: Boogie Preprocessor took 822.49 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 917.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 108.1 MB. Max. memory is 7.1 GB. [2018-07-24 01:14:34,889 INFO L168 Benchmark]: RCFGBuilder took 7927.72 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 557.0 MB). Peak memory consumption was 557.0 MB. Max. memory is 7.1 GB. [2018-07-24 01:14:34,890 INFO L168 Benchmark]: TraceAbstraction took 220643.64 ms. Allocated memory was 2.5 GB in the beginning and 3.5 GB in the end (delta: 1.1 GB). Free memory was 1.8 GB in the beginning and 1.5 GB in the end (delta: 259.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-07-24 01:14:34,895 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1974.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 338.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 822.49 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 917.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 108.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7927.72 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 557.0 MB). Peak memory consumption was 557.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220643.64 ms. Allocated memory was 2.5 GB in the beginning and 3.5 GB in the end (delta: 1.1 GB). Free memory was 1.8 GB in the beginning and 1.5 GB in the end (delta: 259.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 33). Cancelled while BasicCegarLoop was analyzing trace of length 2122 with TraceHistMax 8, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 220.5s OverallTime, 18 OverallIterations, 8 TraceHistogramMax, 160.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9852 SDtfs, 45328 SDslu, 1536 SDs, 0 SdLazy, 109246 SolverSat, 12871 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 124.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4664 GetRequests, 4559 SyntacticMatches, 26 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125089occurred in iteration=16, 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: 12.0s AutomataMinimizationTime, 17 MinimizatonAttempts, 59413 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 19.7s InterpolantComputationTime, 21003 NumberOfCodeBlocks, 21003 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 20982 ConstructedInterpolants, 380 QuantifiedInterpolants, 79634069 SizeOfPredicates, 1 NumberOfNonLiveVariables, 5204 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 21 InterpolantComputations, 17 PerfectInterpolantSequences, 32919/35411 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label57_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_01-14-34-908.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label57_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_01-14-34-908.csv Completed graceful shutdown