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/recursive-simple/id2_b5_o10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 06:27:32,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 06:27:32,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 06:27:32,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 06:27:32,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 06:27:32,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 06:27:32,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 06:27:32,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 06:27:32,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 06:27:32,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 06:27:32,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 06:27:32,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 06:27:32,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 06:27:32,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 06:27:32,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 06:27:32,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 06:27:32,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 06:27:32,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 06:27:32,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 06:27:32,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 06:27:32,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 06:27:32,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 06:27:32,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 06:27:32,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 06:27:32,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 06:27:32,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 06:27:32,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 06:27:32,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 06:27:32,277 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 [2019-09-08 06:27:32,294 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 06:27:32,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 06:27:32,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 06:27:32,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 06:27:32,296 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 06:27:32,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 06:27:32,297 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 06:27:32,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 06:27:32,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 06:27:32,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 06:27:32,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 06:27:32,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 06:27:32,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 06:27:32,299 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 06:27:32,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 06:27:32,299 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 06:27:32,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 06:27:32,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 06:27:32,300 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 06:27:32,300 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 06:27:32,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 06:27:32,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 06:27:32,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 06:27:32,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 06:27:32,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 06:27:32,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 06:27:32,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 06:27:32,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 06:27:32,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 06:27:32,339 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 06:27:32,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 06:27:32,358 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 06:27:32,360 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 06:27:32,360 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 06:27:32,361 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b5_o10.c [2019-09-08 06:27:32,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/674cb6b06/74b6a3d7ffa14aa29f12640e4dce4766/FLAGc3e9586c4 [2019-09-08 06:27:32,884 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 06:27:32,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id2_b5_o10.c [2019-09-08 06:27:32,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/674cb6b06/74b6a3d7ffa14aa29f12640e4dce4766/FLAGc3e9586c4 [2019-09-08 06:27:33,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/674cb6b06/74b6a3d7ffa14aa29f12640e4dce4766 [2019-09-08 06:27:33,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 06:27:33,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 06:27:33,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 06:27:33,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 06:27:33,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 06:27:33,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:27:33" (1/1) ... [2019-09-08 06:27:33,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d0a3d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:33, skipping insertion in model container [2019-09-08 06:27:33,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:27:33" (1/1) ... [2019-09-08 06:27:33,331 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 06:27:33,344 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 06:27:33,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 06:27:33,518 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 06:27:33,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 06:27:33,545 INFO L192 MainTranslator]: Completed translation [2019-09-08 06:27:33,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:33 WrapperNode [2019-09-08 06:27:33,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 06:27:33,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 06:27:33,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 06:27:33,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 06:27:33,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:33" (1/1) ... [2019-09-08 06:27:33,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:33" (1/1) ... [2019-09-08 06:27:33,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:33" (1/1) ... [2019-09-08 06:27:33,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:33" (1/1) ... [2019-09-08 06:27:33,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:33" (1/1) ... [2019-09-08 06:27:33,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:33" (1/1) ... [2019-09-08 06:27:33,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:33" (1/1) ... [2019-09-08 06:27:33,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 06:27:33,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 06:27:33,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 06:27:33,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 06:27:33,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:33" (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 [2019-09-08 06:27:33,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 06:27:33,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 06:27:33,736 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-09-08 06:27:33,736 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2019-09-08 06:27:33,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 06:27:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-08 06:27:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 06:27:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-09-08 06:27:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2019-09-08 06:27:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 06:27:33,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 06:27:33,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 06:27:33,953 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 06:27:33,954 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 06:27:33,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:27:33 BoogieIcfgContainer [2019-09-08 06:27:33,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 06:27:33,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 06:27:33,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 06:27:33,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 06:27:33,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 06:27:33" (1/3) ... [2019-09-08 06:27:33,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6a389d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:27:33, skipping insertion in model container [2019-09-08 06:27:33,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:33" (2/3) ... [2019-09-08 06:27:33,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6a389d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:27:33, skipping insertion in model container [2019-09-08 06:27:33,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:27:33" (3/3) ... [2019-09-08 06:27:33,981 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b5_o10.c [2019-09-08 06:27:34,007 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 06:27:34,026 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 06:27:34,050 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 06:27:34,092 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 06:27:34,093 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 06:27:34,093 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 06:27:34,093 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 06:27:34,094 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 06:27:34,094 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 06:27:34,094 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 06:27:34,094 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 06:27:34,094 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 06:27:34,118 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-09-08 06:27:34,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-08 06:27:34,124 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:34,125 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:34,126 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:34,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:34,131 INFO L82 PathProgramCache]: Analyzing trace with hash 128923731, now seen corresponding path program 1 times [2019-09-08 06:27:34,132 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:34,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:34,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:34,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:27:34,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 06:27:34,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:27:34,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 06:27:34,378 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 06:27:34,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 06:27:34,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 06:27:34,391 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2019-09-08 06:27:34,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:34,454 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2019-09-08 06:27:34,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 06:27:34,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-08 06:27:34,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:34,465 INFO L225 Difference]: With dead ends: 40 [2019-09-08 06:27:34,465 INFO L226 Difference]: Without dead ends: 26 [2019-09-08 06:27:34,469 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 06:27:34,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-08 06:27:34,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-09-08 06:27:34,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-09-08 06:27:34,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-09-08 06:27:34,512 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2019-09-08 06:27:34,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:34,513 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-09-08 06:27:34,513 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 06:27:34,514 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-09-08 06:27:34,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-08 06:27:34,515 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:34,516 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:34,516 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:34,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:34,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1945633833, now seen corresponding path program 1 times [2019-09-08 06:27:34,517 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:34,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:34,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:34,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:27:34,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 06:27:34,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:27:34,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 06:27:34,624 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 06:27:34,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 06:27:34,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 06:27:34,625 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2019-09-08 06:27:34,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:34,644 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-09-08 06:27:34,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 06:27:34,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-09-08 06:27:34,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:34,647 INFO L225 Difference]: With dead ends: 32 [2019-09-08 06:27:34,647 INFO L226 Difference]: Without dead ends: 28 [2019-09-08 06:27:34,648 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 06:27:34,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-09-08 06:27:34,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2019-09-08 06:27:34,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-09-08 06:27:34,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-09-08 06:27:34,656 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 20 [2019-09-08 06:27:34,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:34,657 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-09-08 06:27:34,657 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 06:27:34,657 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-09-08 06:27:34,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-08 06:27:34,658 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:34,658 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:34,659 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:34,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:34,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1974262984, now seen corresponding path program 1 times [2019-09-08 06:27:34,660 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:34,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:34,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:34,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:27:34,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 06:27:34,815 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:27:34,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-08 06:27:34,815 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 06:27:34,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 06:27:34,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-08 06:27:34,816 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 8 states. [2019-09-08 06:27:34,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:34,900 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2019-09-08 06:27:34,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 06:27:34,902 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-09-08 06:27:34,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:34,904 INFO L225 Difference]: With dead ends: 48 [2019-09-08 06:27:34,904 INFO L226 Difference]: Without dead ends: 32 [2019-09-08 06:27:34,907 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-08 06:27:34,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-09-08 06:27:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-09-08 06:27:34,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-08 06:27:34,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-09-08 06:27:34,921 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2019-09-08 06:27:34,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:34,921 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-09-08 06:27:34,921 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 06:27:34,921 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-09-08 06:27:34,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-08 06:27:34,925 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:34,925 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:34,926 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:34,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:34,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1451784300, now seen corresponding path program 1 times [2019-09-08 06:27:34,927 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:34,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:34,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:34,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:27:34,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 06:27:35,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:27:35,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 06:27:35,079 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 06:27:35,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 06:27:35,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 06:27:35,080 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2019-09-08 06:27:35,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:35,103 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2019-09-08 06:27:35,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 06:27:35,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-09-08 06:27:35,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:35,105 INFO L225 Difference]: With dead ends: 50 [2019-09-08 06:27:35,106 INFO L226 Difference]: Without dead ends: 36 [2019-09-08 06:27:35,106 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 06:27:35,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-08 06:27:35,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2019-09-08 06:27:35,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-09-08 06:27:35,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2019-09-08 06:27:35,114 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2019-09-08 06:27:35,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:35,115 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2019-09-08 06:27:35,115 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 06:27:35,115 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2019-09-08 06:27:35,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-08 06:27:35,116 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:35,117 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:35,117 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:35,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:35,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1255270795, now seen corresponding path program 1 times [2019-09-08 06:27:35,118 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:35,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:35,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:35,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:27:35,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:35,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 06:27:35,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:27:35,365 INFO L223 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) [2019-09-08 06:27:35,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:27:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:35,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 20 conjunts are in the unsatisfiable core [2019-09-08 06:27:35,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:27:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 06:27:35,513 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:27:35,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-09-08 06:27:35,514 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 06:27:35,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 06:27:35,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-09-08 06:27:35,515 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 12 states. [2019-09-08 06:27:35,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:35,643 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2019-09-08 06:27:35,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 06:27:35,644 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2019-09-08 06:27:35,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:35,646 INFO L225 Difference]: With dead ends: 64 [2019-09-08 06:27:35,646 INFO L226 Difference]: Without dead ends: 44 [2019-09-08 06:27:35,647 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-09-08 06:27:35,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-09-08 06:27:35,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2019-09-08 06:27:35,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-09-08 06:27:35,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2019-09-08 06:27:35,655 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 27 [2019-09-08 06:27:35,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:35,656 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2019-09-08 06:27:35,656 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 06:27:35,656 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2019-09-08 06:27:35,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-09-08 06:27:35,659 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:35,661 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:35,662 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:35,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:35,662 INFO L82 PathProgramCache]: Analyzing trace with hash 709659056, now seen corresponding path program 1 times [2019-09-08 06:27:35,663 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:35,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:35,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:35,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:27:35,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:35,950 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 06:27:35,951 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:27:35,951 INFO L223 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) [2019-09-08 06:27:35,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:27:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:36,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 26 conjunts are in the unsatisfiable core [2019-09-08 06:27:36,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:27:36,068 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 06:27:36,074 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:27:36,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-09-08 06:27:36,075 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-08 06:27:36,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-08 06:27:36,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2019-09-08 06:27:36,076 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 15 states. [2019-09-08 06:27:36,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:36,232 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2019-09-08 06:27:36,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-08 06:27:36,233 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2019-09-08 06:27:36,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:36,234 INFO L225 Difference]: With dead ends: 72 [2019-09-08 06:27:36,235 INFO L226 Difference]: Without dead ends: 52 [2019-09-08 06:27:36,235 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2019-09-08 06:27:36,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-09-08 06:27:36,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42. [2019-09-08 06:27:36,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-08 06:27:36,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2019-09-08 06:27:36,251 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 34 [2019-09-08 06:27:36,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:36,254 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2019-09-08 06:27:36,254 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-08 06:27:36,255 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2019-09-08 06:27:36,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-09-08 06:27:36,256 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:36,257 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:36,257 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:36,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:36,258 INFO L82 PathProgramCache]: Analyzing trace with hash -797786941, now seen corresponding path program 2 times [2019-09-08 06:27:36,263 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:36,263 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:36,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:36,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:27:36,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-08 06:27:36,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:27:36,618 INFO L223 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) [2019-09-08 06:27:36,642 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:27:36,677 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 06:27:36,677 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 06:27:36,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 32 conjunts are in the unsatisfiable core [2019-09-08 06:27:36,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:27:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-08 06:27:36,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:27:36,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-09-08 06:27:36,774 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-08 06:27:36,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-08 06:27:36,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2019-09-08 06:27:36,776 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 18 states. [2019-09-08 06:27:37,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:37,033 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2019-09-08 06:27:37,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-08 06:27:37,034 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 41 [2019-09-08 06:27:37,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:37,035 INFO L225 Difference]: With dead ends: 80 [2019-09-08 06:27:37,035 INFO L226 Difference]: Without dead ends: 60 [2019-09-08 06:27:37,039 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2019-09-08 06:27:37,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-09-08 06:27:37,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 46. [2019-09-08 06:27:37,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-09-08 06:27:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2019-09-08 06:27:37,050 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 41 [2019-09-08 06:27:37,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:37,050 INFO L475 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2019-09-08 06:27:37,051 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-08 06:27:37,051 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2019-09-08 06:27:37,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-09-08 06:27:37,054 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:37,057 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:37,057 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:37,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:37,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1496626328, now seen corresponding path program 2 times [2019-09-08 06:27:37,058 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:37,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:37,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:37,059 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 06:27:37,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-09-08 06:27:37,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:27:37,422 INFO L223 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) [2019-09-08 06:27:37,442 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:27:37,453 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-09-08 06:27:37,454 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 06:27:37,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-08 06:27:37,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:27:37,576 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 06:27:37,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:27:37,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [20] total 23 [2019-09-08 06:27:37,582 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-08 06:27:37,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-08 06:27:37,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2019-09-08 06:27:37,583 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 23 states. [2019-09-08 06:27:37,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:37,953 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2019-09-08 06:27:37,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-08 06:27:37,953 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 48 [2019-09-08 06:27:37,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:37,958 INFO L225 Difference]: With dead ends: 88 [2019-09-08 06:27:37,958 INFO L226 Difference]: Without dead ends: 0 [2019-09-08 06:27:37,962 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2019-09-08 06:27:37,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-08 06:27:37,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-08 06:27:37,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-08 06:27:37,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-08 06:27:37,964 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2019-09-08 06:27:37,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:37,964 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-08 06:27:37,966 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-09-08 06:27:37,966 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-08 06:27:37,967 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-08 06:27:37,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-08 06:27:37,999 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-08 06:27:37,999 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-08 06:27:37,999 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-09-08 06:27:37,999 INFO L446 ceAbstractionStarter]: At program point L16(line 16) the Hoare annotation is: true [2019-09-08 06:27:38,000 INFO L443 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-09-08 06:27:38,000 INFO L443 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2019-09-08 06:27:38,000 INFO L443 ceAbstractionStarter]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2019-09-08 06:27:38,000 INFO L446 ceAbstractionStarter]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2019-09-08 06:27:38,000 INFO L443 ceAbstractionStarter]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2019-09-08 06:27:38,001 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-08 06:27:38,001 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-08 06:27:38,001 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-08 06:27:38,001 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-08 06:27:38,001 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2019-09-08 06:27:38,001 INFO L443 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2019-09-08 06:27:38,001 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2019-09-08 06:27:38,002 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2019-09-08 06:27:38,002 INFO L446 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: true [2019-09-08 06:27:38,002 INFO L443 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-09-08 06:27:38,002 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2019-09-08 06:27:38,002 INFO L443 ceAbstractionStarter]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2019-09-08 06:27:38,003 INFO L443 ceAbstractionStarter]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2019-09-08 06:27:38,003 INFO L443 ceAbstractionStarter]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2019-09-08 06:27:38,005 INFO L443 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2019-09-08 06:27:38,005 INFO L446 ceAbstractionStarter]: At program point L9(line 9) the Hoare annotation is: true [2019-09-08 06:27:38,006 INFO L443 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2019-09-08 06:27:38,006 INFO L443 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2019-09-08 06:27:38,006 INFO L446 ceAbstractionStarter]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2019-09-08 06:27:38,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 06:27:38 BoogieIcfgContainer [2019-09-08 06:27:38,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 06:27:38,016 INFO L168 Benchmark]: Toolchain (without parser) took 4699.45 ms. Allocated memory was 132.1 MB in the beginning and 262.7 MB in the end (delta: 130.5 MB). Free memory was 88.1 MB in the beginning and 217.6 MB in the end (delta: -129.4 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-09-08 06:27:38,018 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 132.1 MB. Free memory was 106.6 MB in the beginning and 106.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 06:27:38,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.69 ms. Allocated memory is still 132.1 MB. Free memory was 87.9 MB in the beginning and 78.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-08 06:27:38,021 INFO L168 Benchmark]: Boogie Preprocessor took 130.76 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 78.5 MB in the beginning and 175.3 MB in the end (delta: -96.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-08 06:27:38,023 INFO L168 Benchmark]: RCFGBuilder took 279.21 ms. Allocated memory is still 199.2 MB. Free memory was 175.3 MB in the beginning and 163.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-09-08 06:27:38,028 INFO L168 Benchmark]: TraceAbstraction took 4053.77 ms. Allocated memory was 199.2 MB in the beginning and 262.7 MB in the end (delta: 63.4 MB). Free memory was 162.9 MB in the beginning and 217.6 MB in the end (delta: -54.7 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. [2019-09-08 06:27:38,035 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 132.1 MB. Free memory was 106.6 MB in the beginning and 106.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 230.69 ms. Allocated memory is still 132.1 MB. Free memory was 87.9 MB in the beginning and 78.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.76 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 78.5 MB in the beginning and 175.3 MB in the end (delta: -96.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 279.21 ms. Allocated memory is still 199.2 MB. Free memory was 175.3 MB in the beginning and 163.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4053.77 ms. Allocated memory was 199.2 MB in the beginning and 262.7 MB in the end (delta: 63.4 MB). Free memory was 162.9 MB in the beginning and 217.6 MB in the end (delta: -54.7 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. SAFE Result, 3.9s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 248 SDtfs, 34 SDslu, 2123 SDs, 0 SdLazy, 657 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 246 GetRequests, 150 SyntacticMatches, 6 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=7, 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 36 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 380 NumberOfCodeBlocks, 352 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 368 ConstructedInterpolants, 0 QuantifiedInterpolants, 43006 SizeOfPredicates, 14 NumberOfNonLiveVariables, 270 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 90/150 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...