java -Xss4m -Xmx6000000000 -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 ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label45_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 23:08:43,250 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 23:08:43,252 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 23:08:43,268 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 23:08:43,269 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 23:08:43,270 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 23:08:43,271 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 23:08:43,273 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 23:08:43,275 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 23:08:43,275 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 23:08:43,276 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 23:08:43,276 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 23:08:43,277 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 23:08:43,278 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 23:08:43,279 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 23:08:43,280 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 23:08:43,280 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 23:08:43,282 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 23:08:43,284 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 23:08:43,285 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 23:08:43,286 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 23:08:43,288 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 23:08:43,290 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-21 23:08:43,298 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-21 23:08:43,313 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 23:08:43,314 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 23:08:43,314 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 23:08:43,315 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-21 23:08:43,315 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-21 23:08:43,315 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-21 23:08:43,316 INFO L133 SettingsManager]: * Use SBE=true [2018-07-21 23:08:43,316 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 23:08:43,316 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 23:08:43,316 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 23:08:43,317 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 23:08:43,317 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 23:08:43,317 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 23:08:43,317 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 23:08:43,317 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 23:08:43,318 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 23:08:43,318 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 23:08:43,318 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 23:08:43,318 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 23:08:43,318 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 23:08:43,319 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 23:08:43,319 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 23:08:43,319 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 23:08:43,319 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 23:08:43,319 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-21 23:08:43,320 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 23:08:43,320 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 23:08:43,320 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 23:08:43,320 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 23:08:43,356 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 23:08:43,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 23:08:43,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 23:08:43,385 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 23:08:43,385 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 23:08:43,386 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label45_false-unreach-call.c [2018-07-21 23:08:43,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/27cb7d9bf/002a338efede4cb085d11dc004715041/FLAG32e95a9de [2018-07-21 23:08:44,180 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 23:08:44,181 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label45_false-unreach-call.c [2018-07-21 23:08:44,242 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/27cb7d9bf/002a338efede4cb085d11dc004715041/FLAG32e95a9de [2018-07-21 23:08:44,264 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/27cb7d9bf/002a338efede4cb085d11dc004715041 [2018-07-21 23:08:44,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 23:08:44,279 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 23:08:44,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 23:08:44,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 23:08:44,287 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 23:08:44,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:08:44" (1/1) ... [2018-07-21 23:08:44,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708af1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:44, skipping insertion in model container [2018-07-21 23:08:44,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:08:44" (1/1) ... [2018-07-21 23:08:44,546 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 23:08:45,059 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 23:08:45,078 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 23:08:45,623 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 23:08:45,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:45 WrapperNode [2018-07-21 23:08:45,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 23:08:45,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 23:08:45,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 23:08:45,696 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 23:08:45,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:45" (1/1) ... [2018-07-21 23:08:45,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:45" (1/1) ... [2018-07-21 23:08:45,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 23:08:45,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 23:08:45,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 23:08:45,860 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 23:08:45,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:45" (1/1) ... [2018-07-21 23:08:45,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:45" (1/1) ... [2018-07-21 23:08:45,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:45" (1/1) ... [2018-07-21 23:08:45,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:45" (1/1) ... [2018-07-21 23:08:45,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:45" (1/1) ... [2018-07-21 23:08:45,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:45" (1/1) ... [2018-07-21 23:08:45,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:45" (1/1) ... [2018-07-21 23:08:46,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 23:08:46,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 23:08:46,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 23:08:46,011 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 23:08:46,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:45" (1/1) ... No working directory specified, using /storage/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 [2018-07-21 23:08:46,410 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-21 23:08:46,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 23:08:46,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 23:08:52,088 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 23:08:52,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:08:52 BoogieIcfgContainer [2018-07-21 23:08:52,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 23:08:52,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 23:08:52,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 23:08:52,124 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 23:08:52,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:08:44" (1/3) ... [2018-07-21 23:08:52,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9ef260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:08:52, skipping insertion in model container [2018-07-21 23:08:52,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:45" (2/3) ... [2018-07-21 23:08:52,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9ef260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:08:52, skipping insertion in model container [2018-07-21 23:08:52,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:08:52" (3/3) ... [2018-07-21 23:08:52,127 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label45_false-unreach-call.c [2018-07-21 23:08:52,133 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 23:08:52,141 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 23:08:52,192 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 23:08:52,193 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 23:08:52,193 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 23:08:52,193 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 23:08:52,193 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 23:08:52,194 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 23:08:52,194 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 23:08:52,194 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 23:08:52,194 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 23:08:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states. [2018-07-21 23:08:52,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-21 23:08:52,234 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:08:52,235 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:08:52,236 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:08:52,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1272460738, now seen corresponding path program 1 times [2018-07-21 23:08:52,241 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:08:52,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:08:52,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:08:52,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:08:52,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:08:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:08:52,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 23:08:52,995 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:08:52,996 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-21 23:08:53,000 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:08:53,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:08:53,017 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:08:53,020 INFO L87 Difference]: Start difference. First operand 303 states. Second operand 3 states. [2018-07-21 23:08:54,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:08:54,984 INFO L93 Difference]: Finished difference Result 832 states and 1481 transitions. [2018-07-21 23:08:54,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:08:54,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 145 [2018-07-21 23:08:54,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:08:55,008 INFO L225 Difference]: With dead ends: 832 [2018-07-21 23:08:55,008 INFO L226 Difference]: Without dead ends: 525 [2018-07-21 23:08:55,014 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:08:55,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2018-07-21 23:08:55,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 511. [2018-07-21 23:08:55,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2018-07-21 23:08:55,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 878 transitions. [2018-07-21 23:08:55,095 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 878 transitions. Word has length 145 [2018-07-21 23:08:55,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:08:55,096 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 878 transitions. [2018-07-21 23:08:55,097 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 23:08:55,098 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 878 transitions. [2018-07-21 23:08:55,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-21 23:08:55,102 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:08:55,103 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-21 23:08:55,103 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:08:55,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1408994801, now seen corresponding path program 1 times [2018-07-21 23:08:55,104 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:08:55,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:08:55,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:08:55,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:08:55,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:08:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:08:55,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 23:08:55,276 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:08:55,276 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-21 23:08:55,306 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:08:55,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:08:55,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:08:55,307 INFO L87 Difference]: Start difference. First operand 511 states and 878 transitions. Second operand 3 states. [2018-07-21 23:08:56,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:08:56,004 INFO L93 Difference]: Finished difference Result 1518 states and 2616 transitions. [2018-07-21 23:08:56,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:08:56,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2018-07-21 23:08:56,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:08:56,012 INFO L225 Difference]: With dead ends: 1518 [2018-07-21 23:08:56,013 INFO L226 Difference]: Without dead ends: 1009 [2018-07-21 23:08:56,016 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:08:56,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2018-07-21 23:08:56,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 1006. [2018-07-21 23:08:56,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1006 states. [2018-07-21 23:08:56,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1731 transitions. [2018-07-21 23:08:56,077 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1731 transitions. Word has length 151 [2018-07-21 23:08:56,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:08:56,077 INFO L471 AbstractCegarLoop]: Abstraction has 1006 states and 1731 transitions. [2018-07-21 23:08:56,077 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 23:08:56,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1731 transitions. [2018-07-21 23:08:56,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-21 23:08:56,081 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:08:56,081 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-21 23:08:56,082 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:08:56,082 INFO L82 PathProgramCache]: Analyzing trace with hash -544093802, now seen corresponding path program 1 times [2018-07-21 23:08:56,082 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:08:56,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:08:56,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:08:56,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:08:56,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:08:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:08:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 23:08:56,360 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:08:56,360 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:08:56,361 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:08:56,361 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:08:56,361 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:08:56,362 INFO L87 Difference]: Start difference. First operand 1006 states and 1731 transitions. Second operand 3 states. [2018-07-21 23:08:58,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:08:58,784 INFO L93 Difference]: Finished difference Result 2848 states and 5000 transitions. [2018-07-21 23:08:58,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:08:58,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2018-07-21 23:08:58,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:08:58,795 INFO L225 Difference]: With dead ends: 2848 [2018-07-21 23:08:58,795 INFO L226 Difference]: Without dead ends: 1844 [2018-07-21 23:08:58,798 INFO L578 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 [2018-07-21 23:08:58,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2018-07-21 23:08:58,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2018-07-21 23:08:58,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1842 states. [2018-07-21 23:08:58,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2992 transitions. [2018-07-21 23:08:58,865 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2992 transitions. Word has length 153 [2018-07-21 23:08:58,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:08:58,866 INFO L471 AbstractCegarLoop]: Abstraction has 1842 states and 2992 transitions. [2018-07-21 23:08:58,866 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 23:08:58,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2992 transitions. [2018-07-21 23:08:58,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-21 23:08:58,872 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:08:58,873 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-21 23:08:58,873 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:08:58,873 INFO L82 PathProgramCache]: Analyzing trace with hash -496112718, now seen corresponding path program 1 times [2018-07-21 23:08:58,873 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:08:58,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:08:58,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:08:58,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:08:58,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:08:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:08:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 23:08:59,016 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:08:59,016 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-21 23:08:59,018 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:08:59,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:08:59,018 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:08:59,018 INFO L87 Difference]: Start difference. First operand 1842 states and 2992 transitions. Second operand 3 states. [2018-07-21 23:08:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:08:59,561 INFO L93 Difference]: Finished difference Result 5489 states and 8930 transitions. [2018-07-21 23:08:59,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:08:59,567 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2018-07-21 23:08:59,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:08:59,586 INFO L225 Difference]: With dead ends: 5489 [2018-07-21 23:08:59,587 INFO L226 Difference]: Without dead ends: 3649 [2018-07-21 23:08:59,590 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:08:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2018-07-21 23:08:59,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 3647. [2018-07-21 23:08:59,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3647 states. [2018-07-21 23:08:59,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 5923 transitions. [2018-07-21 23:08:59,722 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 5923 transitions. Word has length 160 [2018-07-21 23:08:59,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:08:59,722 INFO L471 AbstractCegarLoop]: Abstraction has 3647 states and 5923 transitions. [2018-07-21 23:08:59,722 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 23:08:59,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 5923 transitions. [2018-07-21 23:08:59,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-21 23:08:59,728 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:08:59,728 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-21 23:08:59,729 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:08:59,729 INFO L82 PathProgramCache]: Analyzing trace with hash 62220525, now seen corresponding path program 1 times [2018-07-21 23:08:59,729 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:08:59,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:08:59,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:08:59,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:08:59,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:08:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:08:59,975 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-07-21 23:08:59,975 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:08:59,975 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:08:59,976 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:08:59,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:08:59,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:08:59,976 INFO L87 Difference]: Start difference. First operand 3647 states and 5923 transitions. Second operand 4 states. [2018-07-21 23:09:01,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:09:01,463 INFO L93 Difference]: Finished difference Result 13982 states and 23015 transitions. [2018-07-21 23:09:01,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:09:01,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2018-07-21 23:09:01,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:09:01,520 INFO L225 Difference]: With dead ends: 13982 [2018-07-21 23:09:01,520 INFO L226 Difference]: Without dead ends: 10337 [2018-07-21 23:09:01,529 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:09:01,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10337 states. [2018-07-21 23:09:01,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10337 to 6921. [2018-07-21 23:09:01,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6921 states. [2018-07-21 23:09:01,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6921 states to 6921 states and 10597 transitions. [2018-07-21 23:09:01,825 INFO L78 Accepts]: Start accepts. Automaton has 6921 states and 10597 transitions. Word has length 175 [2018-07-21 23:09:01,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:09:01,826 INFO L471 AbstractCegarLoop]: Abstraction has 6921 states and 10597 transitions. [2018-07-21 23:09:01,826 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:09:01,826 INFO L276 IsEmpty]: Start isEmpty. Operand 6921 states and 10597 transitions. [2018-07-21 23:09:01,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-21 23:09:01,838 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:09:01,838 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-07-21 23:09:01,838 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:09:01,838 INFO L82 PathProgramCache]: Analyzing trace with hash 956216146, now seen corresponding path program 1 times [2018-07-21 23:09:01,839 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:09:01,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:09:01,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:09:01,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:09:01,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:09:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:09:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-21 23:09:02,026 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:09:02,027 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-21 23:09:02,027 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:09:02,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:09:02,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:09:02,028 INFO L87 Difference]: Start difference. First operand 6921 states and 10597 transitions. Second operand 3 states. [2018-07-21 23:09:02,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:09:02,648 INFO L93 Difference]: Finished difference Result 13752 states and 21072 transitions. [2018-07-21 23:09:02,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:09:02,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2018-07-21 23:09:02,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:09:02,693 INFO L225 Difference]: With dead ends: 13752 [2018-07-21 23:09:02,693 INFO L226 Difference]: Without dead ends: 6833 [2018-07-21 23:09:02,703 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:09:02,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6833 states. [2018-07-21 23:09:02,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6833 to 6833. [2018-07-21 23:09:02,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6833 states. [2018-07-21 23:09:02,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6833 states to 6833 states and 10293 transitions. [2018-07-21 23:09:02,887 INFO L78 Accepts]: Start accepts. Automaton has 6833 states and 10293 transitions. Word has length 176 [2018-07-21 23:09:02,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:09:02,888 INFO L471 AbstractCegarLoop]: Abstraction has 6833 states and 10293 transitions. [2018-07-21 23:09:02,888 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 23:09:02,888 INFO L276 IsEmpty]: Start isEmpty. Operand 6833 states and 10293 transitions. [2018-07-21 23:09:02,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-21 23:09:02,897 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:09:02,897 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:09:02,897 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:09:02,898 INFO L82 PathProgramCache]: Analyzing trace with hash 598732614, now seen corresponding path program 1 times [2018-07-21 23:09:02,898 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:09:02,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:09:02,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:09:02,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:09:02,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:09:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:09:03,474 WARN L169 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-07-21 23:09:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 23:09:03,524 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:09:03,525 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 23:09:03,525 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 23:09:03,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 23:09:03,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-21 23:09:03,526 INFO L87 Difference]: Start difference. First operand 6833 states and 10293 transitions. Second operand 5 states. [2018-07-21 23:09:06,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:09:06,835 INFO L93 Difference]: Finished difference Result 16200 states and 24698 transitions. [2018-07-21 23:09:06,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-21 23:09:06,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2018-07-21 23:09:06,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:09:06,867 INFO L225 Difference]: With dead ends: 16200 [2018-07-21 23:09:06,868 INFO L226 Difference]: Without dead ends: 9369 [2018-07-21 23:09:06,878 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-21 23:09:06,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9369 states. [2018-07-21 23:09:07,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9369 to 7649. [2018-07-21 23:09:07,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7649 states. [2018-07-21 23:09:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7649 states to 7649 states and 11437 transitions. [2018-07-21 23:09:07,033 INFO L78 Accepts]: Start accepts. Automaton has 7649 states and 11437 transitions. Word has length 185 [2018-07-21 23:09:07,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:09:07,033 INFO L471 AbstractCegarLoop]: Abstraction has 7649 states and 11437 transitions. [2018-07-21 23:09:07,033 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 23:09:07,034 INFO L276 IsEmpty]: Start isEmpty. Operand 7649 states and 11437 transitions. [2018-07-21 23:09:07,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-21 23:09:07,044 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:09:07,044 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-07-21 23:09:07,045 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:09:07,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1634157547, now seen corresponding path program 1 times [2018-07-21 23:09:07,045 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:09:07,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:09:07,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:09:07,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:09:07,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:09:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:09:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-21 23:09:07,344 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:09:07,344 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 23:09:07,345 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:09:07,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:09:07,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:09:07,345 INFO L87 Difference]: Start difference. First operand 7649 states and 11437 transitions. Second operand 4 states. [2018-07-21 23:09:09,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:09:09,119 INFO L93 Difference]: Finished difference Result 28564 states and 42598 transitions. [2018-07-21 23:09:09,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:09:09,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 186 [2018-07-21 23:09:09,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:09:09,158 INFO L225 Difference]: With dead ends: 28564 [2018-07-21 23:09:09,158 INFO L226 Difference]: Without dead ends: 20917 [2018-07-21 23:09:09,172 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:09:09,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20917 states. [2018-07-21 23:09:09,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20917 to 20909. [2018-07-21 23:09:09,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20909 states. [2018-07-21 23:09:09,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20909 states to 20909 states and 26955 transitions. [2018-07-21 23:09:09,637 INFO L78 Accepts]: Start accepts. Automaton has 20909 states and 26955 transitions. Word has length 186 [2018-07-21 23:09:09,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:09:09,638 INFO L471 AbstractCegarLoop]: Abstraction has 20909 states and 26955 transitions. [2018-07-21 23:09:09,638 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:09:09,638 INFO L276 IsEmpty]: Start isEmpty. Operand 20909 states and 26955 transitions. [2018-07-21 23:09:09,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-21 23:09:09,648 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:09:09,648 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:09:09,648 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:09:09,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1457670574, now seen corresponding path program 1 times [2018-07-21 23:09:09,649 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:09:09,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:09:09,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:09:09,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:09:09,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:09:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:09:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 23:09:09,854 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:09:09,855 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-21 23:09:09,855 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:09:09,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:09:09,855 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:09:09,855 INFO L87 Difference]: Start difference. First operand 20909 states and 26955 transitions. Second operand 3 states. [2018-07-21 23:09:11,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:09:11,028 INFO L93 Difference]: Finished difference Result 49997 states and 63936 transitions. [2018-07-21 23:09:11,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:09:11,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2018-07-21 23:09:11,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:09:11,102 INFO L225 Difference]: With dead ends: 49997 [2018-07-21 23:09:11,102 INFO L226 Difference]: Without dead ends: 29090 [2018-07-21 23:09:11,126 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:09:11,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29090 states. [2018-07-21 23:09:11,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29090 to 29088. [2018-07-21 23:09:11,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29088 states. [2018-07-21 23:09:11,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29088 states to 29088 states and 36697 transitions. [2018-07-21 23:09:11,793 INFO L78 Accepts]: Start accepts. Automaton has 29088 states and 36697 transitions. Word has length 187 [2018-07-21 23:09:11,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:09:11,793 INFO L471 AbstractCegarLoop]: Abstraction has 29088 states and 36697 transitions. [2018-07-21 23:09:11,793 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 23:09:11,793 INFO L276 IsEmpty]: Start isEmpty. Operand 29088 states and 36697 transitions. [2018-07-21 23:09:11,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-21 23:09:11,807 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:09:11,808 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:09:11,808 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:09:11,808 INFO L82 PathProgramCache]: Analyzing trace with hash -228638426, now seen corresponding path program 1 times [2018-07-21 23:09:11,808 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:09:11,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:09:11,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:09:11,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:09:11,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:09:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:09:12,057 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 23:09:12,058 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:09:12,058 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-21 23:09:12,058 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 23:09:12,059 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 23:09:12,059 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-21 23:09:12,059 INFO L87 Difference]: Start difference. First operand 29088 states and 36697 transitions. Second operand 6 states. [2018-07-21 23:09:14,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:09:14,286 INFO L93 Difference]: Finished difference Result 62926 states and 79341 transitions. [2018-07-21 23:09:14,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-21 23:09:14,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2018-07-21 23:09:14,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:09:14,327 INFO L225 Difference]: With dead ends: 62926 [2018-07-21 23:09:14,327 INFO L226 Difference]: Without dead ends: 33840 [2018-07-21 23:09:14,354 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-21 23:09:14,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33840 states. [2018-07-21 23:09:14,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33840 to 30516. [2018-07-21 23:09:14,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30516 states. [2018-07-21 23:09:14,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30516 states to 30516 states and 37485 transitions. [2018-07-21 23:09:14,798 INFO L78 Accepts]: Start accepts. Automaton has 30516 states and 37485 transitions. Word has length 195 [2018-07-21 23:09:14,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:09:14,798 INFO L471 AbstractCegarLoop]: Abstraction has 30516 states and 37485 transitions. [2018-07-21 23:09:14,798 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 23:09:14,798 INFO L276 IsEmpty]: Start isEmpty. Operand 30516 states and 37485 transitions. [2018-07-21 23:09:14,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-21 23:09:14,812 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:09:14,812 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:09:14,813 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:09:14,813 INFO L82 PathProgramCache]: Analyzing trace with hash -131773896, now seen corresponding path program 1 times [2018-07-21 23:09:14,813 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:09:14,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:09:14,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:09:14,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:09:14,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:09:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:09:15,157 WARN L169 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-21 23:09:15,314 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 75 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-07-21 23:09:15,314 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 23:09:15,314 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-21 23:09:15,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:09:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:09:15,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 23:09:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-07-21 23:09:15,970 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 23:09:15,972 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-21 23:09:15,973 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 23:09:15,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 23:09:15,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-21 23:09:15,974 INFO L87 Difference]: Start difference. First operand 30516 states and 37485 transitions. Second operand 6 states. [2018-07-21 23:09:19,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:09:19,890 INFO L93 Difference]: Finished difference Result 133188 states and 162286 transitions. [2018-07-21 23:09:19,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 23:09:19,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 224 [2018-07-21 23:09:19,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:09:19,996 INFO L225 Difference]: With dead ends: 133188 [2018-07-21 23:09:19,996 INFO L226 Difference]: Without dead ends: 102674 [2018-07-21 23:09:20,025 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-21 23:09:20,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102674 states. [2018-07-21 23:09:20,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102674 to 102654. [2018-07-21 23:09:20,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102654 states. [2018-07-21 23:09:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102654 states to 102654 states and 119550 transitions. [2018-07-21 23:09:23,624 INFO L78 Accepts]: Start accepts. Automaton has 102654 states and 119550 transitions. Word has length 224 [2018-07-21 23:09:23,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:09:23,624 INFO L471 AbstractCegarLoop]: Abstraction has 102654 states and 119550 transitions. [2018-07-21 23:09:23,624 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 23:09:23,624 INFO L276 IsEmpty]: Start isEmpty. Operand 102654 states and 119550 transitions. [2018-07-21 23:09:23,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-07-21 23:09:23,642 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:09:23,643 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-21 23:09:23,643 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:09:23,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1273999016, now seen corresponding path program 1 times [2018-07-21 23:09:23,643 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:09:23,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:09:23,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:09:23,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:09:23,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:09:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:09:24,034 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-07-21 23:09:24,035 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:09:24,035 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:09:24,035 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:09:24,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:09:24,036 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:09:24,036 INFO L87 Difference]: Start difference. First operand 102654 states and 119550 transitions. Second operand 4 states. [2018-07-21 23:09:26,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:09:26,727 INFO L93 Difference]: Finished difference Result 328824 states and 379297 transitions. [2018-07-21 23:09:26,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:09:26,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 245 [2018-07-21 23:09:26,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:09:26,967 INFO L225 Difference]: With dead ends: 328824 [2018-07-21 23:09:26,967 INFO L226 Difference]: Without dead ends: 226172 [2018-07-21 23:09:27,003 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:09:27,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226172 states. [2018-07-21 23:09:29,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226172 to 168748. [2018-07-21 23:09:29,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168748 states. [2018-07-21 23:09:29,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168748 states to 168748 states and 192591 transitions. [2018-07-21 23:09:29,248 INFO L78 Accepts]: Start accepts. Automaton has 168748 states and 192591 transitions. Word has length 245 [2018-07-21 23:09:29,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:09:29,248 INFO L471 AbstractCegarLoop]: Abstraction has 168748 states and 192591 transitions. [2018-07-21 23:09:29,248 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:09:29,249 INFO L276 IsEmpty]: Start isEmpty. Operand 168748 states and 192591 transitions. [2018-07-21 23:09:29,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-07-21 23:09:29,267 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:09:29,267 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:09:29,267 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:09:29,267 INFO L82 PathProgramCache]: Analyzing trace with hash -507780283, now seen corresponding path program 1 times [2018-07-21 23:09:29,267 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:09:29,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:09:29,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:09:29,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:09:29,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:09:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:09:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-07-21 23:09:29,513 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:09:29,513 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-21 23:09:29,513 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:09:29,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:09:29,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:09:29,514 INFO L87 Difference]: Start difference. First operand 168748 states and 192591 transitions. Second operand 3 states. [2018-07-21 23:09:31,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:09:31,864 INFO L93 Difference]: Finished difference Result 337486 states and 385172 transitions. [2018-07-21 23:09:31,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:09:31,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 273 [2018-07-21 23:09:31,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:09:32,028 INFO L225 Difference]: With dead ends: 337486 [2018-07-21 23:09:32,028 INFO L226 Difference]: Without dead ends: 168740 [2018-07-21 23:09:32,062 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:09:32,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168740 states. [2018-07-21 23:09:33,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168740 to 168740. [2018-07-21 23:09:33,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168740 states. [2018-07-21 23:09:38,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168740 states to 168740 states and 192575 transitions. [2018-07-21 23:09:38,570 INFO L78 Accepts]: Start accepts. Automaton has 168740 states and 192575 transitions. Word has length 273 [2018-07-21 23:09:38,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:09:38,570 INFO L471 AbstractCegarLoop]: Abstraction has 168740 states and 192575 transitions. [2018-07-21 23:09:38,570 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 23:09:38,570 INFO L276 IsEmpty]: Start isEmpty. Operand 168740 states and 192575 transitions. [2018-07-21 23:09:38,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-21 23:09:38,593 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:09:38,593 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:09:38,593 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:09:38,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1814311929, now seen corresponding path program 1 times [2018-07-21 23:09:38,594 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:09:38,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:09:38,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:09:38,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:09:38,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:09:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:09:39,080 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 142 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-07-21 23:09:39,081 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 23:09:39,081 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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) [2018-07-21 23:09:39,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-21 23:09:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:09:39,238 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 23:09:39,359 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-07-21 23:09:39,382 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 23:09:39,383 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-07-21 23:09:39,383 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 23:09:39,384 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 23:09:39,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-21 23:09:39,384 INFO L87 Difference]: Start difference. First operand 168740 states and 192575 transitions. Second operand 5 states. [2018-07-21 23:09:46,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:09:46,115 INFO L93 Difference]: Finished difference Result 1093645 states and 1242681 transitions. [2018-07-21 23:09:46,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 23:09:46,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 288 [2018-07-21 23:09:46,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:09:47,412 INFO L225 Difference]: With dead ends: 1093645 [2018-07-21 23:09:47,412 INFO L226 Difference]: Without dead ends: 924907 [2018-07-21 23:09:48,790 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-21 23:09:49,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924907 states. [2018-07-21 23:10:03,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924907 to 586531. [2018-07-21 23:10:03,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586531 states. [2018-07-21 23:10:04,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586531 states to 586531 states and 667889 transitions. [2018-07-21 23:10:04,771 INFO L78 Accepts]: Start accepts. Automaton has 586531 states and 667889 transitions. Word has length 288 [2018-07-21 23:10:04,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:10:04,771 INFO L471 AbstractCegarLoop]: Abstraction has 586531 states and 667889 transitions. [2018-07-21 23:10:04,771 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 23:10:04,771 INFO L276 IsEmpty]: Start isEmpty. Operand 586531 states and 667889 transitions. [2018-07-21 23:10:04,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-07-21 23:10:04,857 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:10:04,857 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:10:04,857 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:10:04,858 INFO L82 PathProgramCache]: Analyzing trace with hash 594176367, now seen corresponding path program 1 times [2018-07-21 23:10:04,858 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:10:04,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:10:04,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:10:04,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:10:04,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:10:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:10:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-07-21 23:10:05,248 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:10:05,248 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:10:05,248 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:10:05,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:10:05,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:10:05,252 INFO L87 Difference]: Start difference. First operand 586531 states and 667889 transitions. Second operand 4 states. [2018-07-21 23:10:16,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:10:16,991 INFO L93 Difference]: Finished difference Result 1195875 states and 1363112 transitions. [2018-07-21 23:10:16,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:10:16,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 289 [2018-07-21 23:10:16,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:10:18,861 INFO L225 Difference]: With dead ends: 1195875 [2018-07-21 23:10:18,861 INFO L226 Difference]: Without dead ends: 609346 [2018-07-21 23:10:19,020 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:10:19,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609346 states. [2018-07-21 23:10:36,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609346 to 595293. [2018-07-21 23:10:36,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595293 states. [2018-07-21 23:10:36,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595293 states to 595293 states and 678566 transitions. [2018-07-21 23:10:36,840 INFO L78 Accepts]: Start accepts. Automaton has 595293 states and 678566 transitions. Word has length 289 [2018-07-21 23:10:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:10:36,841 INFO L471 AbstractCegarLoop]: Abstraction has 595293 states and 678566 transitions. [2018-07-21 23:10:36,841 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:10:36,841 INFO L276 IsEmpty]: Start isEmpty. Operand 595293 states and 678566 transitions. [2018-07-21 23:10:36,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-21 23:10:36,873 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:10:36,873 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:10:36,873 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:10:36,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1462176291, now seen corresponding path program 1 times [2018-07-21 23:10:36,873 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:10:36,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:10:36,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:10:36,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:10:36,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:10:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:10:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-21 23:10:37,300 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:10:37,300 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 23:10:37,301 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:10:37,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:10:37,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:10:37,301 INFO L87 Difference]: Start difference. First operand 595293 states and 678566 transitions. Second operand 4 states. [2018-07-21 23:10:52,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:10:52,211 INFO L93 Difference]: Finished difference Result 1104975 states and 1262540 transitions. [2018-07-21 23:10:52,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:10:52,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 294 [2018-07-21 23:10:52,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:10:53,061 INFO L225 Difference]: With dead ends: 1104975 [2018-07-21 23:10:53,061 INFO L226 Difference]: Without dead ends: 509684 [2018-07-21 23:10:53,268 INFO L578 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 [2018-07-21 23:10:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509684 states. [2018-07-21 23:11:00,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509684 to 489229. [2018-07-21 23:11:00,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489229 states. [2018-07-21 23:11:11,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489229 states to 489229 states and 548974 transitions. [2018-07-21 23:11:11,990 INFO L78 Accepts]: Start accepts. Automaton has 489229 states and 548974 transitions. Word has length 294 [2018-07-21 23:11:11,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:11:11,991 INFO L471 AbstractCegarLoop]: Abstraction has 489229 states and 548974 transitions. [2018-07-21 23:11:11,991 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:11:11,991 INFO L276 IsEmpty]: Start isEmpty. Operand 489229 states and 548974 transitions. [2018-07-21 23:11:12,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-07-21 23:11:12,027 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:11:12,028 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:11:12,028 INFO L414 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:11:12,028 INFO L82 PathProgramCache]: Analyzing trace with hash -854629387, now seen corresponding path program 1 times [2018-07-21 23:11:12,028 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:11:12,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:11:12,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:11:12,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:11:12,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:11:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:11:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-07-21 23:11:12,319 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:11:12,320 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:11:12,320 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:11:12,321 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:11:12,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:11:12,322 INFO L87 Difference]: Start difference. First operand 489229 states and 548974 transitions. Second operand 3 states. [2018-07-21 23:11:17,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:11:17,491 INFO L93 Difference]: Finished difference Result 943472 states and 1060758 transitions. [2018-07-21 23:11:17,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:11:17,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 311 [2018-07-21 23:11:17,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:11:18,044 INFO L225 Difference]: With dead ends: 943472 [2018-07-21 23:11:18,044 INFO L226 Difference]: Without dead ends: 454245 [2018-07-21 23:11:18,157 INFO L578 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 [2018-07-21 23:11:18,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454245 states. [2018-07-21 23:11:24,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454245 to 439889. [2018-07-21 23:11:24,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439889 states. [2018-07-21 23:11:25,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439889 states to 439889 states and 484359 transitions. [2018-07-21 23:11:25,553 INFO L78 Accepts]: Start accepts. Automaton has 439889 states and 484359 transitions. Word has length 311 [2018-07-21 23:11:25,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:11:25,554 INFO L471 AbstractCegarLoop]: Abstraction has 439889 states and 484359 transitions. [2018-07-21 23:11:25,554 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 23:11:25,554 INFO L276 IsEmpty]: Start isEmpty. Operand 439889 states and 484359 transitions. [2018-07-21 23:11:26,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-07-21 23:11:26,630 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:11:26,630 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-21 23:11:26,630 INFO L414 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:11:26,631 INFO L82 PathProgramCache]: Analyzing trace with hash 2090677068, now seen corresponding path program 1 times [2018-07-21 23:11:26,631 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:11:26,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:11:26,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:11:26,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:11:26,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:11:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:11:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 564 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-07-21 23:11:27,186 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:11:27,186 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:11:27,187 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:11:27,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:11:27,187 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:11:27,187 INFO L87 Difference]: Start difference. First operand 439889 states and 484359 transitions. Second operand 3 states. [2018-07-21 23:11:34,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:11:34,777 INFO L93 Difference]: Finished difference Result 839631 states and 928888 transitions. [2018-07-21 23:11:34,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:11:34,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 494 [2018-07-21 23:11:34,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:11:35,270 INFO L225 Difference]: With dead ends: 839631 [2018-07-21 23:11:35,270 INFO L226 Difference]: Without dead ends: 399744 [2018-07-21 23:11:35,408 INFO L578 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 [2018-07-21 23:11:35,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399744 states. [2018-07-21 23:11:41,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399744 to 398753. [2018-07-21 23:11:41,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398753 states. [2018-07-21 23:11:41,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398753 states to 398753 states and 439633 transitions. [2018-07-21 23:11:41,929 INFO L78 Accepts]: Start accepts. Automaton has 398753 states and 439633 transitions. Word has length 494 [2018-07-21 23:11:41,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:11:41,929 INFO L471 AbstractCegarLoop]: Abstraction has 398753 states and 439633 transitions. [2018-07-21 23:11:41,929 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 23:11:41,929 INFO L276 IsEmpty]: Start isEmpty. Operand 398753 states and 439633 transitions. [2018-07-21 23:11:42,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2018-07-21 23:11:42,090 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:11:42,090 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-21 23:11:42,090 INFO L414 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:11:42,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1164596537, now seen corresponding path program 1 times [2018-07-21 23:11:42,090 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:11:42,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:11:42,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:11:42,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:11:42,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:11:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:11:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 541 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-21 23:11:47,615 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:11:47,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:11:47,615 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:11:47,615 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:11:47,615 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:11:47,617 INFO L87 Difference]: Start difference. First operand 398753 states and 439633 transitions. Second operand 3 states. Received shutdown request... [2018-07-21 23:11:49,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:11:49,733 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-21 23:11:49,740 WARN L202 ceAbstractionStarter]: Timeout [2018-07-21 23:11:49,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:11:49 BoogieIcfgContainer [2018-07-21 23:11:49,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 23:11:49,742 INFO L168 Benchmark]: Toolchain (without parser) took 185468.00 ms. Allocated memory was 309.3 MB in the beginning and 4.1 GB in the end (delta: 3.8 GB). Free memory was 248.1 MB in the beginning and 2.7 GB in the end (delta: -2.4 GB). Peak memory consumption was 2.0 GB. Max. memory is 5.3 GB. [2018-07-21 23:11:49,743 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 309.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 23:11:49,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1414.82 ms. Allocated memory was 309.3 MB in the beginning and 339.2 MB in the end (delta: 29.9 MB). Free memory was 248.1 MB in the beginning and 276.2 MB in the end (delta: -28.1 MB). Peak memory consumption was 71.9 MB. Max. memory is 5.3 GB. [2018-07-21 23:11:49,744 INFO L168 Benchmark]: Boogie Procedure Inliner took 163.71 ms. Allocated memory is still 339.2 MB. Free memory was 276.2 MB in the beginning and 262.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 5.3 GB. [2018-07-21 23:11:49,745 INFO L168 Benchmark]: Boogie Preprocessor took 150.70 ms. Allocated memory is still 339.2 MB. Free memory was 262.4 MB in the beginning and 251.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 5.3 GB. [2018-07-21 23:11:49,745 INFO L168 Benchmark]: RCFGBuilder took 6109.18 ms. Allocated memory was 339.2 MB in the beginning and 531.6 MB in the end (delta: 192.4 MB). Free memory was 251.6 MB in the beginning and 404.3 MB in the end (delta: -152.7 MB). Peak memory consumption was 160.3 MB. Max. memory is 5.3 GB. [2018-07-21 23:11:49,746 INFO L168 Benchmark]: TraceAbstraction took 177619.80 ms. Allocated memory was 531.6 MB in the beginning and 4.1 GB in the end (delta: 3.5 GB). Free memory was 404.3 MB in the beginning and 2.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 1.9 GB. Max. memory is 5.3 GB. [2018-07-21 23:11:49,757 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 309.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 1414.82 ms. Allocated memory was 309.3 MB in the beginning and 339.2 MB in the end (delta: 29.9 MB). Free memory was 248.1 MB in the beginning and 276.2 MB in the end (delta: -28.1 MB). Peak memory consumption was 71.9 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 163.71 ms. Allocated memory is still 339.2 MB. Free memory was 276.2 MB in the beginning and 262.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 150.70 ms. Allocated memory is still 339.2 MB. Free memory was 262.4 MB in the beginning and 251.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 5.3 GB. * RCFGBuilder took 6109.18 ms. Allocated memory was 339.2 MB in the beginning and 531.6 MB in the end (delta: 192.4 MB). Free memory was 251.6 MB in the beginning and 404.3 MB in the end (delta: -152.7 MB). Peak memory consumption was 160.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 177619.80 ms. Allocated memory was 531.6 MB in the beginning and 4.1 GB in the end (delta: 3.5 GB). Free memory was 404.3 MB in the beginning and 2.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 1.9 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1467]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1467). Cancelled while BasicCegarLoop was constructing difference of abstraction (398753states) and interpolant automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (230032 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 303 locations, 1 error locations. TIMEOUT Result, 177.5s OverallTime, 19 OverallIterations, 5 TraceHistogramMax, 81.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4910 SDtfs, 11982 SDslu, 3606 SDs, 0 SdLazy, 17561 SolverSat, 3785 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 32.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 576 GetRequests, 535 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=595293occurred in iteration=15, 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: 81.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 454166 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 5138 NumberOfCodeBlocks, 5138 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 5117 ConstructedInterpolants, 0 QuantifiedInterpolants, 2600201 SizeOfPredicates, 1 NumberOfNonLiveVariables, 930 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 21 InterpolantComputations, 19 PerfectInterpolantSequences, 3155/3163 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/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem03_label45_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_23-11-49-779.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem03_label45_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-21_23-11-49-779.csv Completed graceful shutdown