java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/nested_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 16:11:44,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 16:11:44,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 16:11:44,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 16:11:44,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 16:11:44,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 16:11:44,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 16:11:44,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 16:11:44,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 16:11:44,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 16:11:44,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 16:11:44,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 16:11:44,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 16:11:44,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 16:11:44,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 16:11:44,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 16:11:44,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 16:11:44,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 16:11:44,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 16:11:44,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 16:11:44,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 16:11:44,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 16:11:44,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 16:11:44,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 16:11:44,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 16:11:44,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 16:11:44,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 16:11:44,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 16:11:44,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 16:11:44,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 16:11:44,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 16:11:44,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 16:11:44,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 16:11:44,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 16:11:44,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 16:11:44,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 16:11:44,294 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-16 16:11:44,307 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 16:11:44,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 16:11:44,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 16:11:44,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 16:11:44,309 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 16:11:44,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 16:11:44,310 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 16:11:44,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 16:11:44,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 16:11:44,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 16:11:44,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 16:11:44,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 16:11:44,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 16:11:44,311 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 16:11:44,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 16:11:44,311 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 16:11:44,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 16:11:44,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 16:11:44,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 16:11:44,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 16:11:44,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 16:11:44,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:11:44,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 16:11:44,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 16:11:44,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 16:11:44,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 16:11:44,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 16:11:44,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 16:11:44,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 16:11:44,341 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 16:11:44,353 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 16:11:44,357 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 16:11:44,358 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 16:11:44,359 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 16:11:44,359 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/nested_1-1.c [2019-09-16 16:11:44,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bc1dd760/6d57a71a220e4db1a396b8f33b1e09ab/FLAG5bb311431 [2019-09-16 16:11:44,850 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 16:11:44,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/nested_1-1.c [2019-09-16 16:11:44,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bc1dd760/6d57a71a220e4db1a396b8f33b1e09ab/FLAG5bb311431 [2019-09-16 16:11:45,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bc1dd760/6d57a71a220e4db1a396b8f33b1e09ab [2019-09-16 16:11:45,248 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 16:11:45,249 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 16:11:45,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 16:11:45,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 16:11:45,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 16:11:45,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:11:45" (1/1) ... [2019-09-16 16:11:45,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d044f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:45, skipping insertion in model container [2019-09-16 16:11:45,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:11:45" (1/1) ... [2019-09-16 16:11:45,268 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 16:11:45,283 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 16:11:45,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:11:45,451 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 16:11:45,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:11:45,482 INFO L192 MainTranslator]: Completed translation [2019-09-16 16:11:45,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:45 WrapperNode [2019-09-16 16:11:45,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 16:11:45,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 16:11:45,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 16:11:45,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 16:11:45,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:45" (1/1) ... [2019-09-16 16:11:45,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:45" (1/1) ... [2019-09-16 16:11:45,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:45" (1/1) ... [2019-09-16 16:11:45,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:45" (1/1) ... [2019-09-16 16:11:45,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:45" (1/1) ... [2019-09-16 16:11:45,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:45" (1/1) ... [2019-09-16 16:11:45,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:45" (1/1) ... [2019-09-16 16:11:45,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 16:11:45,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 16:11:45,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 16:11:45,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 16:11:45,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:11:45,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 16:11:45,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 16:11:45,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 16:11:45,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 16:11:45,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 16:11:45,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 16:11:45,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 16:11:45,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 16:11:45,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 16:11:45,838 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 16:11:45,839 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-16 16:11:45,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:11:45 BoogieIcfgContainer [2019-09-16 16:11:45,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 16:11:45,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 16:11:45,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 16:11:45,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 16:11:45,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 04:11:45" (1/3) ... [2019-09-16 16:11:45,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3911eb49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:11:45, skipping insertion in model container [2019-09-16 16:11:45,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:45" (2/3) ... [2019-09-16 16:11:45,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3911eb49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:11:45, skipping insertion in model container [2019-09-16 16:11:45,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:11:45" (3/3) ... [2019-09-16 16:11:45,847 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_1-1.c [2019-09-16 16:11:45,857 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 16:11:45,865 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 16:11:45,881 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 16:11:45,919 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-16 16:11:45,920 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 16:11:45,920 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-16 16:11:45,920 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 16:11:45,920 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 16:11:45,920 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 16:11:45,920 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 16:11:45,921 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 16:11:45,921 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 16:11:45,934 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-16 16:11:45,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-16 16:11:45,939 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:45,939 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:45,941 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:45,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:45,946 INFO L82 PathProgramCache]: Analyzing trace with hash -873786703, now seen corresponding path program 1 times [2019-09-16 16:11:45,947 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:45,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:45,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:45,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:45,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:46,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:46,155 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:11:46,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 16:11:46,160 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 16:11:46,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 16:11:46,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 16:11:46,183 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-09-16 16:11:46,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:46,240 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2019-09-16 16:11:46,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 16:11:46,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-09-16 16:11:46,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:46,266 INFO L225 Difference]: With dead ends: 36 [2019-09-16 16:11:46,266 INFO L226 Difference]: Without dead ends: 16 [2019-09-16 16:11:46,271 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 16:11:46,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-16 16:11:46,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2019-09-16 16:11:46,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-16 16:11:46,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-09-16 16:11:46,306 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2019-09-16 16:11:46,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:46,307 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-09-16 16:11:46,307 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 16:11:46,307 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-09-16 16:11:46,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-16 16:11:46,308 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:46,308 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:46,309 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:46,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:46,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1621360120, now seen corresponding path program 1 times [2019-09-16 16:11:46,309 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:46,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:46,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:46,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:46,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:46,408 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:11:46,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 16:11:46,411 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 16:11:46,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 16:11:46,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 16:11:46,412 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2019-09-16 16:11:46,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:46,438 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-09-16 16:11:46,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 16:11:46,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-09-16 16:11:46,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:46,441 INFO L225 Difference]: With dead ends: 23 [2019-09-16 16:11:46,441 INFO L226 Difference]: Without dead ends: 15 [2019-09-16 16:11:46,442 INFO L636 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 [2019-09-16 16:11:46,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-16 16:11:46,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-16 16:11:46,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-16 16:11:46,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-09-16 16:11:46,454 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2019-09-16 16:11:46,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:46,455 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-09-16 16:11:46,456 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 16:11:46,456 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-09-16 16:11:46,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-16 16:11:46,457 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:46,457 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:46,458 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:46,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:46,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1574756514, now seen corresponding path program 1 times [2019-09-16 16:11:46,459 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:46,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:46,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:46,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:46,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:46,594 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:11:46,594 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:11:46,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:46,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-16 16:11:46,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:11:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-16 16:11:46,713 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:11:46,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2019-09-16 16:11:46,716 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 16:11:46,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 16:11:46,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-16 16:11:46,717 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 7 states. [2019-09-16 16:11:46,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:46,816 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2019-09-16 16:11:46,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 16:11:46,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-09-16 16:11:46,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:46,818 INFO L225 Difference]: With dead ends: 34 [2019-09-16 16:11:46,818 INFO L226 Difference]: Without dead ends: 25 [2019-09-16 16:11:46,819 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-09-16 16:11:46,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-09-16 16:11:46,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2019-09-16 16:11:46,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-16 16:11:46,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-09-16 16:11:46,826 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2019-09-16 16:11:46,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:46,826 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-09-16 16:11:46,826 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 16:11:46,827 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-09-16 16:11:46,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-16 16:11:46,827 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:46,828 INFO L407 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:46,828 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:46,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:46,828 INFO L82 PathProgramCache]: Analyzing trace with hash 93409041, now seen corresponding path program 2 times [2019-09-16 16:11:46,829 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:46,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:46,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:46,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:46,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:46,914 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-16 16:11:46,914 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:11:46,914 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:11:46,933 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-16 16:11:46,950 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-16 16:11:46,951 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:11:46,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-16 16:11:46,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:11:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-16 16:11:47,000 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:11:47,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-09-16 16:11:47,001 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 16:11:47,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 16:11:47,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-16 16:11:47,005 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 8 states. [2019-09-16 16:11:47,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:47,281 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2019-09-16 16:11:47,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-16 16:11:47,281 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-09-16 16:11:47,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:47,282 INFO L225 Difference]: With dead ends: 46 [2019-09-16 16:11:47,283 INFO L226 Difference]: Without dead ends: 34 [2019-09-16 16:11:47,283 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2019-09-16 16:11:47,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-09-16 16:11:47,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2019-09-16 16:11:47,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-09-16 16:11:47,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-09-16 16:11:47,291 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 20 [2019-09-16 16:11:47,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:47,292 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-09-16 16:11:47,292 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 16:11:47,292 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-09-16 16:11:47,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-09-16 16:11:47,293 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:47,293 INFO L407 BasicCegarLoop]: trace histogram [9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:47,294 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:47,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:47,294 INFO L82 PathProgramCache]: Analyzing trace with hash 50981508, now seen corresponding path program 3 times [2019-09-16 16:11:47,294 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:47,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:47,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:47,296 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:11:47,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-09-16 16:11:47,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:11:47,422 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:11:47,441 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-16 16:11:47,477 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-09-16 16:11:47,478 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:11:47,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-16 16:11:47,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:11:47,509 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-09-16 16:11:47,513 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:11:47,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-09-16 16:11:47,514 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 16:11:47,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 16:11:47,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-16 16:11:47,515 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 7 states. [2019-09-16 16:11:47,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:47,549 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2019-09-16 16:11:47,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 16:11:47,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2019-09-16 16:11:47,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:47,550 INFO L225 Difference]: With dead ends: 51 [2019-09-16 16:11:47,551 INFO L226 Difference]: Without dead ends: 32 [2019-09-16 16:11:47,551 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-16 16:11:47,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-09-16 16:11:47,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-09-16 16:11:47,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-16 16:11:47,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2019-09-16 16:11:47,558 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 28 [2019-09-16 16:11:47,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:47,559 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2019-09-16 16:11:47,559 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 16:11:47,559 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2019-09-16 16:11:47,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-16 16:11:47,560 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:47,560 INFO L407 BasicCegarLoop]: trace histogram [12, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:47,560 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:47,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:47,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1418818136, now seen corresponding path program 4 times [2019-09-16 16:11:47,561 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:47,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:47,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:47,563 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:11:47,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:47,700 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 53 proven. 10 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-09-16 16:11:47,701 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:11:47,701 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-16 16:11:47,717 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:11:47,749 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-16 16:11:47,750 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:11:47,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-16 16:11:47,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:11:47,862 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-09-16 16:11:47,867 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:11:47,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 15 [2019-09-16 16:11:47,868 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-16 16:11:47,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-16 16:11:47,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2019-09-16 16:11:47,869 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 15 states. [2019-09-16 16:11:48,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:48,292 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2019-09-16 16:11:48,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-09-16 16:11:48,292 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2019-09-16 16:11:48,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:48,294 INFO L225 Difference]: With dead ends: 71 [2019-09-16 16:11:48,294 INFO L226 Difference]: Without dead ends: 50 [2019-09-16 16:11:48,295 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2019-09-16 16:11:48,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-09-16 16:11:48,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2019-09-16 16:11:48,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-09-16 16:11:48,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2019-09-16 16:11:48,304 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 31 [2019-09-16 16:11:48,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:48,305 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2019-09-16 16:11:48,305 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-16 16:11:48,305 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2019-09-16 16:11:48,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-16 16:11:48,307 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:48,308 INFO L407 BasicCegarLoop]: trace histogram [20, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:48,325 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:48,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:48,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1949427083, now seen corresponding path program 5 times [2019-09-16 16:11:48,326 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:48,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:48,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:48,328 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:11:48,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:48,479 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 112 proven. 15 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2019-09-16 16:11:48,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:11:48,479 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-16 16:11:48,507 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:11:48,552 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-09-16 16:11:48,552 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:11:48,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-16 16:11:48,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:11:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 189 proven. 15 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-09-16 16:11:48,596 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:11:48,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-09-16 16:11:48,597 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 16:11:48,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 16:11:48,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-16 16:11:48,598 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 9 states. [2019-09-16 16:11:48,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:48,648 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2019-09-16 16:11:48,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 16:11:48,650 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2019-09-16 16:11:48,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:48,651 INFO L225 Difference]: With dead ends: 78 [2019-09-16 16:11:48,651 INFO L226 Difference]: Without dead ends: 47 [2019-09-16 16:11:48,652 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-16 16:11:48,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-09-16 16:11:48,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-09-16 16:11:48,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-09-16 16:11:48,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2019-09-16 16:11:48,660 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 42 [2019-09-16 16:11:48,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:48,660 INFO L475 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2019-09-16 16:11:48,660 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 16:11:48,660 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2019-09-16 16:11:48,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-16 16:11:48,662 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:48,662 INFO L407 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:48,662 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:48,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:48,662 INFO L82 PathProgramCache]: Analyzing trace with hash -649475471, now seen corresponding path program 6 times [2019-09-16 16:11:48,663 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:48,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:48,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:48,664 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:11:48,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 151 proven. 21 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-09-16 16:11:48,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:11:48,807 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-16 16:11:48,827 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:11:48,903 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-09-16 16:11:48,904 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:11:48,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-16 16:11:48,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:11:48,937 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 254 proven. 21 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-09-16 16:11:48,941 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:11:48,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-09-16 16:11:48,942 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-16 16:11:48,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-16 16:11:48,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-09-16 16:11:48,944 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 10 states. [2019-09-16 16:11:49,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:49,011 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2019-09-16 16:11:49,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-16 16:11:49,017 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2019-09-16 16:11:49,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:49,017 INFO L225 Difference]: With dead ends: 85 [2019-09-16 16:11:49,018 INFO L226 Difference]: Without dead ends: 51 [2019-09-16 16:11:49,020 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-09-16 16:11:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-09-16 16:11:49,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-09-16 16:11:49,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-09-16 16:11:49,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2019-09-16 16:11:49,033 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 46 [2019-09-16 16:11:49,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:49,034 INFO L475 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2019-09-16 16:11:49,034 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-16 16:11:49,034 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2019-09-16 16:11:49,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-09-16 16:11:49,036 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:49,036 INFO L407 BasicCegarLoop]: trace histogram [28, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:49,036 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:49,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:49,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1892649995, now seen corresponding path program 7 times [2019-09-16 16:11:49,037 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:49,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:49,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:49,039 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:11:49,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 196 proven. 28 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2019-09-16 16:11:49,183 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:11:49,183 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:11:49,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:49,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-16 16:11:49,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:11:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-09-16 16:11:49,399 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:11:49,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2019-09-16 16:11:49,400 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-16 16:11:49,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-16 16:11:49,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2019-09-16 16:11:49,401 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 20 states. [2019-09-16 16:11:50,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:50,374 INFO L93 Difference]: Finished difference Result 113 states and 129 transitions. [2019-09-16 16:11:50,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-09-16 16:11:50,375 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2019-09-16 16:11:50,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:50,376 INFO L225 Difference]: With dead ends: 113 [2019-09-16 16:11:50,376 INFO L226 Difference]: Without dead ends: 76 [2019-09-16 16:11:50,378 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=2706, Unknown=0, NotChecked=0, Total=2970 [2019-09-16 16:11:50,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-09-16 16:11:50,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2019-09-16 16:11:50,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-09-16 16:11:50,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2019-09-16 16:11:50,388 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 50 [2019-09-16 16:11:50,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:50,388 INFO L475 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2019-09-16 16:11:50,388 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-16 16:11:50,389 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2019-09-16 16:11:50,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-16 16:11:50,390 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:50,390 INFO L407 BasicCegarLoop]: trace histogram [40, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:50,390 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:50,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:50,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1564944312, now seen corresponding path program 8 times [2019-09-16 16:11:50,391 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:50,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:50,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:50,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:50,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 329 proven. 36 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2019-09-16 16:11:50,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:11:50,547 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-16 16:11:50,566 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:11:50,600 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-16 16:11:50,601 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:11:50,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2019-09-16 16:11:50,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:11:50,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-09-16 16:11:50,791 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:11:50,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 23 [2019-09-16 16:11:50,792 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-16 16:11:50,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-16 16:11:50,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2019-09-16 16:11:50,793 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 23 states. [2019-09-16 16:11:52,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:52,240 INFO L93 Difference]: Finished difference Result 145 states and 164 transitions. [2019-09-16 16:11:52,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2019-09-16 16:11:52,240 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2019-09-16 16:11:52,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:52,242 INFO L225 Difference]: With dead ends: 145 [2019-09-16 16:11:52,242 INFO L226 Difference]: Without dead ends: 94 [2019-09-16 16:11:52,246 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=351, Invalid=4619, Unknown=0, NotChecked=0, Total=4970 [2019-09-16 16:11:52,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2019-09-16 16:11:52,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 83. [2019-09-16 16:11:52,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-09-16 16:11:52,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2019-09-16 16:11:52,256 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 65 [2019-09-16 16:11:52,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:52,257 INFO L475 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2019-09-16 16:11:52,257 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-09-16 16:11:52,257 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2019-09-16 16:11:52,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-09-16 16:11:52,258 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:52,259 INFO L407 BasicCegarLoop]: trace histogram [54, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:52,259 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:52,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:52,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1497018839, now seen corresponding path program 9 times [2019-09-16 16:11:52,259 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:52,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:52,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:52,261 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:11:52,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 506 proven. 45 refuted. 0 times theorem prover too weak. 1255 trivial. 0 not checked. [2019-09-16 16:11:52,414 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:11:52,414 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:11:52,443 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-16 16:11:52,605 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2019-09-16 16:11:52,606 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:11:52,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-16 16:11:52,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:11:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 511 proven. 45 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2019-09-16 16:11:52,648 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:11:52,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-09-16 16:11:52,649 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-16 16:11:52,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-16 16:11:52,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-16 16:11:52,650 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand 13 states. [2019-09-16 16:11:52,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:52,743 INFO L93 Difference]: Finished difference Result 156 states and 173 transitions. [2019-09-16 16:11:52,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-16 16:11:52,745 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 82 [2019-09-16 16:11:52,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:52,746 INFO L225 Difference]: With dead ends: 156 [2019-09-16 16:11:52,746 INFO L226 Difference]: Without dead ends: 89 [2019-09-16 16:11:52,747 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-16 16:11:52,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-09-16 16:11:52,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2019-09-16 16:11:52,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-09-16 16:11:52,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2019-09-16 16:11:52,764 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 82 [2019-09-16 16:11:52,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:52,765 INFO L475 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2019-09-16 16:11:52,765 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-16 16:11:52,765 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2019-09-16 16:11:52,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-09-16 16:11:52,766 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:52,767 INFO L407 BasicCegarLoop]: trace histogram [60, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:52,767 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:52,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:52,767 INFO L82 PathProgramCache]: Analyzing trace with hash 642319569, now seen corresponding path program 10 times [2019-09-16 16:11:52,767 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:52,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:52,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:52,769 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:11:52,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2181 backedges. 0 proven. 1851 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2019-09-16 16:11:52,941 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:11:52,941 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:11:52,978 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-16 16:11:53,023 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-16 16:11:53,023 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:11:53,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 30 conjunts are in the unsatisfiable core [2019-09-16 16:11:53,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:11:53,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2181 backedges. 0 proven. 1900 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2019-09-16 16:11:53,198 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:11:53,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16] total 17 [2019-09-16 16:11:53,198 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-16 16:11:53,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-16 16:11:53,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2019-09-16 16:11:53,199 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand 17 states. [2019-09-16 16:11:53,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:53,414 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2019-09-16 16:11:53,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-16 16:11:53,415 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 88 [2019-09-16 16:11:53,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:53,416 INFO L225 Difference]: With dead ends: 119 [2019-09-16 16:11:53,417 INFO L226 Difference]: Without dead ends: 114 [2019-09-16 16:11:53,417 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2019-09-16 16:11:53,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-09-16 16:11:53,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2019-09-16 16:11:53,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-09-16 16:11:53,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2019-09-16 16:11:53,432 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 88 [2019-09-16 16:11:53,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:53,432 INFO L475 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2019-09-16 16:11:53,432 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-16 16:11:53,433 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2019-09-16 16:11:53,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-09-16 16:11:53,434 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:53,434 INFO L407 BasicCegarLoop]: trace histogram [70, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:53,435 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:53,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:53,435 INFO L82 PathProgramCache]: Analyzing trace with hash -284489192, now seen corresponding path program 11 times [2019-09-16 16:11:53,435 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:53,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:53,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:53,436 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:11:53,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:53,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2975 backedges. 0 proven. 2590 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2019-09-16 16:11:53,639 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:11:53,639 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-16 16:11:53,669 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:13:03,906 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2019-09-16 16:13:03,907 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:13:04,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 34 conjunts are in the unsatisfiable core [2019-09-16 16:13:04,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:13:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2975 backedges. 0 proven. 2642 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2019-09-16 16:13:04,364 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:13:04,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 18] total 19 [2019-09-16 16:13:04,365 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-16 16:13:04,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-16 16:13:04,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-09-16 16:13:04,366 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand 19 states. [2019-09-16 16:13:04,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:13:04,750 INFO L93 Difference]: Finished difference Result 132 states and 141 transitions. [2019-09-16 16:13:04,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-16 16:13:04,751 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 101 [2019-09-16 16:13:04,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:13:04,753 INFO L225 Difference]: With dead ends: 132 [2019-09-16 16:13:04,753 INFO L226 Difference]: Without dead ends: 127 [2019-09-16 16:13:04,754 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-09-16 16:13:04,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-09-16 16:13:04,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 115. [2019-09-16 16:13:04,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-09-16 16:13:04,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 123 transitions. [2019-09-16 16:13:04,771 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 123 transitions. Word has length 101 [2019-09-16 16:13:04,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:13:04,771 INFO L475 AbstractCegarLoop]: Abstraction has 115 states and 123 transitions. [2019-09-16 16:13:04,771 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-16 16:13:04,772 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 123 transitions. [2019-09-16 16:13:04,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-16 16:13:04,773 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:13:04,773 INFO L407 BasicCegarLoop]: trace histogram [80, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:13:04,774 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:13:04,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:13:04,774 INFO L82 PathProgramCache]: Analyzing trace with hash -352579535, now seen corresponding path program 12 times [2019-09-16 16:13:04,774 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:13:04,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:13:04,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:13:04,775 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:13:04,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:13:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:13:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 0 proven. 3452 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2019-09-16 16:13:05,005 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:13:05,006 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:13:05,030 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-16 16:13:08,932 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2019-09-16 16:13:08,932 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:13:08,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-16 16:13:08,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:13:09,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:13:09,004 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:13:09,007 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:13:09,007 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:13:09,009 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:13:25,802 WARN L191 SmtUtils]: Spent 5.70 s on a formula simplification. DAG size of input: 43 DAG size of output: 19 [2019-09-16 16:13:27,811 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_main_~x~0_BEFORE_CALL_1 Int)) (let ((.cse0 (mod v_main_~x~0_BEFORE_CALL_1 4294967296)) (.cse1 (mod v_main_~x~0_BEFORE_CALL_1 2))) (and (<= 268435455 .cse0) (< (mod (+ v_main_~x~0_BEFORE_CALL_1 4294967295) 4294967296) 268435455) (<= 0 .cse0) (<= .cse1 2147483647) (= .cse1 c___VERIFIER_assert_~cond)))) is different from false [2019-09-16 16:13:27,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 862 proven. 0 refuted. 0 times theorem prover too weak. 3030 trivial. 0 not checked. [2019-09-16 16:13:27,935 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 16:13:27,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2019-09-16 16:13:27,935 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-16 16:13:27,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-16 16:13:27,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=158, Unknown=2, NotChecked=26, Total=240 [2019-09-16 16:13:27,936 INFO L87 Difference]: Start difference. First operand 115 states and 123 transitions. Second operand 16 states. [2019-09-16 16:13:30,208 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_BEFORE_CALL_1 Int)) (let ((.cse0 (mod v_main_~x~0_BEFORE_CALL_1 4294967296)) (.cse1 (mod v_main_~x~0_BEFORE_CALL_1 2))) (and (<= 268435455 .cse0) (= .cse1 |c___VERIFIER_assert_#in~cond|) (< (mod (+ v_main_~x~0_BEFORE_CALL_1 4294967295) 4294967296) 268435455) (<= 0 .cse0) (<= .cse1 2147483647)))) (exists ((v_main_~x~0_BEFORE_CALL_1 Int)) (let ((.cse2 (mod v_main_~x~0_BEFORE_CALL_1 4294967296)) (.cse3 (mod v_main_~x~0_BEFORE_CALL_1 2))) (and (<= 268435455 .cse2) (< (mod (+ v_main_~x~0_BEFORE_CALL_1 4294967295) 4294967296) 268435455) (<= 0 .cse2) (<= .cse3 2147483647) (= .cse3 c___VERIFIER_assert_~cond))))) is different from true [2019-09-16 16:13:30,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:13:30,209 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2019-09-16 16:13:30,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-16 16:13:30,209 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 114 [2019-09-16 16:13:30,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:13:30,210 INFO L225 Difference]: With dead ends: 144 [2019-09-16 16:13:30,210 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 16:13:30,211 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=80, Invalid=197, Unknown=3, NotChecked=62, Total=342 [2019-09-16 16:13:30,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 16:13:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 16:13:30,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 16:13:30,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 16:13:30,212 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 114 [2019-09-16 16:13:30,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:13:30,212 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 16:13:30,212 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-16 16:13:30,213 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 16:13:30,213 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 16:13:30,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-16 16:13:30,493 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 56 [2019-09-16 16:13:30,599 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-16 16:13:30,599 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-16 16:13:30,599 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-16 16:13:30,599 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-16 16:13:30,600 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-16 16:13:30,600 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-16 16:13:30,600 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2019-09-16 16:13:30,600 INFO L439 ceAbstractionStarter]: At program point L17-2(lines 17 19) the Hoare annotation is: (or (and (<= main_~x~0 0) (<= 0 main_~x~0)) (and (< (mod (+ main_~x~0 4294967295) 4294967296) 268435455) (< (mod main_~x~0 4294967296) 268435455))) [2019-09-16 16:13:30,600 INFO L443 ceAbstractionStarter]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2019-09-16 16:13:30,600 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2019-09-16 16:13:30,600 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 25) the Hoare annotation is: true [2019-09-16 16:13:30,600 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 14 22) the Hoare annotation is: (or (< (mod (+ main_~x~0 4294967295) 4294967296) 268435455) (and (<= 0 main_~y~0) (<= main_~x~0 0) (<= 0 main_~x~0) (<= main_~y~0 0))) [2019-09-16 16:13:30,601 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 22) the Hoare annotation is: (and (< (mod (+ main_~x~0 4294967295) 4294967296) 268435455) (<= 268435455 (mod main_~x~0 4294967296))) [2019-09-16 16:13:30,601 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-16 16:13:30,601 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-16 16:13:30,601 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-16 16:13:30,601 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-16 16:13:30,601 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-16 16:13:30,602 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-16 16:13:30,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 04:13:30 BoogieIcfgContainer [2019-09-16 16:13:30,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 16:13:30,632 INFO L168 Benchmark]: Toolchain (without parser) took 105376.25 ms. Allocated memory was 133.2 MB in the beginning and 349.7 MB in the end (delta: 216.5 MB). Free memory was 89.0 MB in the beginning and 92.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 213.2 MB. Max. memory is 7.1 GB. [2019-09-16 16:13:30,633 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 133.2 MB. Free memory was 107.4 MB in the beginning and 107.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 16:13:30,634 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.19 ms. Allocated memory is still 133.2 MB. Free memory was 88.8 MB in the beginning and 79.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-09-16 16:13:30,635 INFO L168 Benchmark]: Boogie Preprocessor took 113.54 ms. Allocated memory was 133.2 MB in the beginning and 198.7 MB in the end (delta: 65.5 MB). Free memory was 79.6 MB in the beginning and 175.6 MB in the end (delta: -95.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2019-09-16 16:13:30,636 INFO L168 Benchmark]: RCFGBuilder took 242.50 ms. Allocated memory is still 198.7 MB. Free memory was 175.6 MB in the beginning and 164.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-09-16 16:13:30,640 INFO L168 Benchmark]: TraceAbstraction took 104783.10 ms. Allocated memory was 198.7 MB in the beginning and 349.7 MB in the end (delta: 151.0 MB). Free memory was 163.6 MB in the beginning and 92.3 MB in the end (delta: 71.3 MB). Peak memory consumption was 222.3 MB. Max. memory is 7.1 GB. [2019-09-16 16:13:30,651 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 133.2 MB. Free memory was 107.4 MB in the beginning and 107.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 233.19 ms. Allocated memory is still 133.2 MB. Free memory was 88.8 MB in the beginning and 79.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.54 ms. Allocated memory was 133.2 MB in the beginning and 198.7 MB in the end (delta: 65.5 MB). Free memory was 79.6 MB in the beginning and 175.6 MB in the end (delta: -95.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 242.50 ms. Allocated memory is still 198.7 MB. Free memory was 175.6 MB in the beginning and 164.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 104783.10 ms. Allocated memory was 198.7 MB in the beginning and 349.7 MB in the end (delta: 151.0 MB). Free memory was 163.6 MB in the beginning and 92.3 MB in the end (delta: 71.3 MB). Peak memory consumption was 222.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (x + 4294967295) % 4294967296 < 268435455 || (((0 <= y && x <= 0) && 0 <= x) && y <= 0) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (x <= 0 && 0 <= x) || ((x + 4294967295) % 4294967296 < 268435455 && x % 4294967296 < 268435455) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 104.6s OverallTime, 14 OverallIterations, 80 TraceHistogramMax, 6.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 223 SDtfs, 127 SDslu, 1138 SDs, 0 SdLazy, 3169 SolverSat, 247 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 896 GetRequests, 630 SyntacticMatches, 10 SemanticMatches, 256 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2629 ImplicationChecksByTransitivity, 24.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 63 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 22 PreInvPairs, 144 NumberOfFragments, 60 HoareAnnotationTreeSize, 22 FomulaSimplifications, 35831 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 8 FomulaSimplificationsInter, 170 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 74.9s SatisfiabilityAnalysisTime, 21.8s InterpolantComputationTime, 1385 NumberOfCodeBlocks, 1246 NumberOfCodeBlocksAsserted, 112 NumberOfCheckSat, 1359 ConstructedInterpolants, 2 QuantifiedInterpolants, 424684 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1445 ConjunctsInSsa, 214 ConjunctsInUnsatCore, 26 InterpolantComputations, 3 PerfectInterpolantSequences, 12466/26555 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...