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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:25:28,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:25:28,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:25:28,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:25:28,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:25:28,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:25:28,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:25:28,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:25:28,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:25:28,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:25:28,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:25:28,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:25:28,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:25:28,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:25:28,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:25:28,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:25:28,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:25:28,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:25:28,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:25:28,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:25:28,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:25:28,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:25:28,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:25:28,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:25:28,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:25:28,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:25:28,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:25:28,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:25:28,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:25:28,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:25:28,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:25:28,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:25:28,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:25:28,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:25:28,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:25:28,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:25:28,267 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:25:28,285 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:25:28,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:25:28,286 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:25:28,286 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:25:28,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:25:28,290 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:25:28,290 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:25:28,290 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:25:28,290 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:25:28,291 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:25:28,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:25:28,291 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:25:28,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:25:28,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:25:28,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:25:28,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:25:28,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:25:28,294 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:25:28,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:25:28,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:25:28,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:25:28,295 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:25:28,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:25:28,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:25:28,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:25:28,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:25:28,296 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:25:28,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:25:28,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:25:28,297 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:25:28,332 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:25:28,349 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:25:28,353 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:25:28,354 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:25:28,354 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:25:28,355 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2019-09-20 13:25:28,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22987ca17/a31743cf9b4f41bba2df28fa718824ba/FLAGb3aaab8ee [2019-09-20 13:25:28,867 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:25:28,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2019-09-20 13:25:28,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22987ca17/a31743cf9b4f41bba2df28fa718824ba/FLAGb3aaab8ee [2019-09-20 13:25:29,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22987ca17/a31743cf9b4f41bba2df28fa718824ba [2019-09-20 13:25:29,242 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:25:29,243 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:25:29,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:29,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:25:29,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:25:29,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:29" (1/1) ... [2019-09-20 13:25:29,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d48262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:29, skipping insertion in model container [2019-09-20 13:25:29,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:29" (1/1) ... [2019-09-20 13:25:29,261 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:25:29,279 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:25:29,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:29,442 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:25:29,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:29,468 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:25:29,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:29 WrapperNode [2019-09-20 13:25:29,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:29,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:25:29,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:25:29,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:25:29,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:29" (1/1) ... [2019-09-20 13:25:29,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:29" (1/1) ... [2019-09-20 13:25:29,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:29" (1/1) ... [2019-09-20 13:25:29,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:29" (1/1) ... [2019-09-20 13:25:29,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:29" (1/1) ... [2019-09-20 13:25:29,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:29" (1/1) ... [2019-09-20 13:25:29,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:29" (1/1) ... [2019-09-20 13:25:29,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:25:29,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:25:29,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:25:29,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:25:29,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:29" (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 [2019-09-20 13:25:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:25:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:25:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:25:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:25:29,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:25:29,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 13:25:29,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:25:29,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:25:29,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:25:29,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:25:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:25:29,826 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:25:29,827 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 13:25:29,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:29 BoogieIcfgContainer [2019-09-20 13:25:29,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:25:29,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:25:29,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:25:29,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:25:29,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:25:29" (1/3) ... [2019-09-20 13:25:29,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb22644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:29, skipping insertion in model container [2019-09-20 13:25:29,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:29" (2/3) ... [2019-09-20 13:25:29,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb22644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:29, skipping insertion in model container [2019-09-20 13:25:29,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:29" (3/3) ... [2019-09-20 13:25:29,843 INFO L109 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2019-09-20 13:25:29,866 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:25:29,881 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:25:29,903 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:25:29,946 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:25:29,946 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:25:29,947 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:25:29,947 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:25:29,947 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:25:29,947 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:25:29,947 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:25:29,948 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:25:29,963 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-20 13:25:29,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-20 13:25:29,973 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:29,974 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:29,978 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:29,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:29,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1158151592, now seen corresponding path program 1 times [2019-09-20 13:25:29,986 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:30,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:30,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:30,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:30,031 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:30,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:30,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:25:30,195 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:30,199 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:25:30,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:25:30,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:25:30,222 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2019-09-20 13:25:30,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:30,339 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-09-20 13:25:30,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:25:30,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-09-20 13:25:30,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:30,351 INFO L225 Difference]: With dead ends: 29 [2019-09-20 13:25:30,351 INFO L226 Difference]: Without dead ends: 21 [2019-09-20 13:25:30,353 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:25:30,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-20 13:25:30,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-20 13:25:30,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-20 13:25:30,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-09-20 13:25:30,387 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2019-09-20 13:25:30,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:30,388 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-09-20 13:25:30,388 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:25:30,388 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-09-20 13:25:30,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-20 13:25:30,390 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:30,390 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:30,391 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:30,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:30,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1937413030, now seen corresponding path program 1 times [2019-09-20 13:25:30,393 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:30,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:30,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:30,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:30,396 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:30,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:30,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:30,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:25:30,496 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:30,497 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:25:30,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:25:30,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:25:30,498 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 6 states. [2019-09-20 13:25:30,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:30,599 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-09-20 13:25:30,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:25:30,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-09-20 13:25:30,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:30,602 INFO L225 Difference]: With dead ends: 29 [2019-09-20 13:25:30,602 INFO L226 Difference]: Without dead ends: 29 [2019-09-20 13:25:30,603 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:25:30,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-20 13:25:30,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-09-20 13:25:30,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-20 13:25:30,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2019-09-20 13:25:30,614 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 17 [2019-09-20 13:25:30,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:30,614 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2019-09-20 13:25:30,614 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:25:30,615 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2019-09-20 13:25:30,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-20 13:25:30,617 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:30,617 INFO L407 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:30,617 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:30,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:30,618 INFO L82 PathProgramCache]: Analyzing trace with hash 441803270, now seen corresponding path program 1 times [2019-09-20 13:25:30,618 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:30,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:30,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:30,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:30,620 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:30,716 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-20 13:25:30,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:30,716 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:25:30,717 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 30 with the following transitions: [2019-09-20 13:25:30,719 INFO L207 CegarAbsIntRunner]: [0], [4], [7], [11], [19], [23], [29], [32], [34], [37], [39], [40], [41], [42], [44], [45], [46], [47] [2019-09-20 13:25:30,753 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:25:30,753 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:25:30,954 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-20 13:25:30,957 INFO L272 AbstractInterpreter]: Visited 18 different actions 103 times. Merged at 4 different actions 20 times. Widened at 1 different actions 1 times. Performed 120 root evaluator evaluations with a maximum evaluation depth of 7. Performed 120 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2019-09-20 13:25:30,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:30,964 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-20 13:25:30,964 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:30,964 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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 [2019-09-20 13:25:30,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:30,986 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-20 13:25:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:31,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-20 13:25:31,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:25:31,144 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:25:31,181 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-20 13:25:31,181 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-20 13:25:31,248 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:25:31,282 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:25:31,283 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:25:31,315 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-20 13:25:31,320 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-20 13:25:31,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 15 [2019-09-20 13:25:31,321 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-20 13:25:31,321 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:25:31,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:25:31,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:25:31,323 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 13 states. [2019-09-20 13:25:31,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:31,503 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2019-09-20 13:25:31,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:25:31,504 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29 [2019-09-20 13:25:31,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:31,505 INFO L225 Difference]: With dead ends: 41 [2019-09-20 13:25:31,506 INFO L226 Difference]: Without dead ends: 41 [2019-09-20 13:25:31,508 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2019-09-20 13:25:31,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-09-20 13:25:31,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-09-20 13:25:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-20 13:25:31,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2019-09-20 13:25:31,518 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 29 [2019-09-20 13:25:31,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:31,519 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2019-09-20 13:25:31,519 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:25:31,519 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2019-09-20 13:25:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-09-20 13:25:31,521 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:31,521 INFO L407 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:31,521 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:31,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:31,522 INFO L82 PathProgramCache]: Analyzing trace with hash 713924710, now seen corresponding path program 2 times [2019-09-20 13:25:31,522 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:31,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:31,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:31,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:31,524 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:31,608 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-09-20 13:25:31,609 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:31,609 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:25:31,609 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-20 13:25:31,609 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-20 13:25:31,610 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:31,610 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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) [2019-09-20 13:25:31,627 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-20 13:25:31,627 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:25:31,641 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-20 13:25:31,641 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:25:31,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-20 13:25:31,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:25:31,675 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:25:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-09-20 13:25:31,697 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-20 13:25:31,725 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:25:31,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:25:31,744 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:25:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-09-20 13:25:31,821 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-20 13:25:31,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 13 [2019-09-20 13:25:31,821 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-20 13:25:31,822 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-20 13:25:31,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-20 13:25:31,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:25:31,823 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 10 states. [2019-09-20 13:25:31,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:31,922 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2019-09-20 13:25:31,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:25:31,923 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2019-09-20 13:25:31,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:31,924 INFO L225 Difference]: With dead ends: 38 [2019-09-20 13:25:31,924 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:25:31,925 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2019-09-20 13:25:31,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:25:31,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:25:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:25:31,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:25:31,926 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2019-09-20 13:25:31,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:31,926 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:25:31,926 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-20 13:25:31,926 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:25:31,926 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:25:31,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:25:31 BoogieIcfgContainer [2019-09-20 13:25:31,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:25:31,934 INFO L168 Benchmark]: Toolchain (without parser) took 2689.95 ms. Allocated memory was 132.1 MB in the beginning and 222.3 MB in the end (delta: 90.2 MB). Free memory was 87.6 MB in the beginning and 106.1 MB in the end (delta: -18.5 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:31,935 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 132.1 MB. Free memory is still 106.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:25:31,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.58 ms. Allocated memory is still 132.1 MB. Free memory was 87.6 MB in the beginning and 78.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:31,937 INFO L168 Benchmark]: Boogie Preprocessor took 109.66 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 78.3 MB in the beginning and 176.4 MB in the end (delta: -98.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:31,938 INFO L168 Benchmark]: RCFGBuilder took 249.10 ms. Allocated memory is still 199.2 MB. Free memory was 175.5 MB in the beginning and 163.2 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:31,939 INFO L168 Benchmark]: TraceAbstraction took 2102.40 ms. Allocated memory was 199.2 MB in the beginning and 222.3 MB in the end (delta: 23.1 MB). Free memory was 163.2 MB in the beginning and 106.1 MB in the end (delta: 57.1 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:31,943 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 132.1 MB. Free memory is still 106.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 224.58 ms. Allocated memory is still 132.1 MB. Free memory was 87.6 MB in the beginning and 78.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.66 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 78.3 MB in the beginning and 176.4 MB in the end (delta: -98.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 249.10 ms. Allocated memory is still 199.2 MB. Free memory was 175.5 MB in the beginning and 163.2 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2102.40 ms. Allocated memory was 199.2 MB in the beginning and 222.3 MB in the end (delta: 23.1 MB). Free memory was 163.2 MB in the beginning and 106.1 MB in the end (delta: 57.1 MB). Peak memory consumption was 80.1 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 2.0s OverallTime, 4 OverallIterations, 6 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 60 SDtfs, 41 SDslu, 228 SDs, 0 SdLazy, 200 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 172 GetRequests, 126 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 169 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 231 ConstructedInterpolants, 0 QuantifiedInterpolants, 18563 SizeOfPredicates, 14 NumberOfNonLiveVariables, 123 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 208/245 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...