/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_o3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:08:10,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:08:10,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:08:10,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 05:08:10,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:08:10,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:08:10,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:08:10,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:08:10,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:08:10,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:08:10,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:08:10,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:08:10,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:08:10,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:08:10,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:08:10,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:08:10,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:08:11,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:08:11,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:08:11,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:08:11,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:08:11,037 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:08:11,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:08:11,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:08:11,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:08:11,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:08:11,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:08:11,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:08:11,040 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:08:11,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:08:11,040 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:08:11,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:08:11,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:08:11,042 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:08:11,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:08:11,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:08:11,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:08:11,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:08:11,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:08:11,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:08:11,044 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:08:11,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:08:11,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:08:11,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:08:11,501 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:08:11,502 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:08:11,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o3.c [2020-11-07 05:08:11,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/befa8e43f/ac7a91a50cb84981bebf556375dbd146/FLAG0b868c355 [2020-11-07 05:08:12,254 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:08:12,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_o3.c [2020-11-07 05:08:12,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/befa8e43f/ac7a91a50cb84981bebf556375dbd146/FLAG0b868c355 [2020-11-07 05:08:12,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/befa8e43f/ac7a91a50cb84981bebf556375dbd146 [2020-11-07 05:08:12,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:08:12,622 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:08:12,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:08:12,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:08:12,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:08:12,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:08:12" (1/1) ... [2020-11-07 05:08:12,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cf86dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:12, skipping insertion in model container [2020-11-07 05:08:12,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:08:12" (1/1) ... [2020-11-07 05:08:12,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:08:12,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:08:12,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:08:12,838 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:08:12,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:08:12,872 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:08:12,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:12 WrapperNode [2020-11-07 05:08:12,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:08:12,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:08:12,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:08:12,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:08:12,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:12" (1/1) ... [2020-11-07 05:08:12,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:12" (1/1) ... [2020-11-07 05:08:12,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:12" (1/1) ... [2020-11-07 05:08:12,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:12" (1/1) ... [2020-11-07 05:08:12,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:12" (1/1) ... [2020-11-07 05:08:12,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:12" (1/1) ... [2020-11-07 05:08:12,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:12" (1/1) ... [2020-11-07 05:08:12,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:08:12,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:08:12,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:08:12,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:08:12,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:12" (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 [2020-11-07 05:08:12,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:08:12,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:08:12,996 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:08:12,996 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-11-07 05:08:12,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:08:12,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-11-07 05:08:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:08:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:08:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:08:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:08:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-11-07 05:08:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:08:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:08:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:08:12,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:08:12,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:08:12,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:08:12,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:08:13,290 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:08:13,290 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 05:08:13,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:08:13 BoogieIcfgContainer [2020-11-07 05:08:13,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:08:13,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:08:13,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:08:13,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:08:13,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:08:12" (1/3) ... [2020-11-07 05:08:13,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543549ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:08:13, skipping insertion in model container [2020-11-07 05:08:13,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:08:12" (2/3) ... [2020-11-07 05:08:13,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543549ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:08:13, skipping insertion in model container [2020-11-07 05:08:13,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:08:13" (3/3) ... [2020-11-07 05:08:13,303 INFO L111 eAbstractionObserver]: Analyzing ICFG id_o3.c [2020-11-07 05:08:13,389 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:08:13,399 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:08:13,445 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:08:13,473 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:08:13,473 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:08:13,473 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:08:13,473 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:08:13,473 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:08:13,474 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:08:13,474 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:08:13,474 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:08:13,490 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-11-07 05:08:13,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-07 05:08:13,500 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:13,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:13,501 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:13,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:13,508 INFO L82 PathProgramCache]: Analyzing trace with hash -2039876327, now seen corresponding path program 1 times [2020-11-07 05:08:13,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:13,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185912591] [2020-11-07 05:08:13,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:13,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:13,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:13,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:08:13,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185912591] [2020-11-07 05:08:13,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:08:13,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 05:08:13,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349572531] [2020-11-07 05:08:13,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 05:08:13,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:13,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 05:08:13,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:08:13,945 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 6 states. [2020-11-07 05:08:14,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:14,356 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-11-07 05:08:14,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 05:08:14,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-07 05:08:14,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:14,394 INFO L225 Difference]: With dead ends: 50 [2020-11-07 05:08:14,395 INFO L226 Difference]: Without dead ends: 31 [2020-11-07 05:08:14,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:08:14,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-07 05:08:14,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-07 05:08:14,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-07 05:08:14,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-11-07 05:08:14,456 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 25 [2020-11-07 05:08:14,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:14,457 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-11-07 05:08:14,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 05:08:14,458 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-11-07 05:08:14,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-07 05:08:14,460 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:14,460 INFO L422 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, 1, 1, 1, 1, 1] [2020-11-07 05:08:14,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:08:14,461 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:14,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:14,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1789799325, now seen corresponding path program 1 times [2020-11-07 05:08:14,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:14,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670855285] [2020-11-07 05:08:14,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:14,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:14,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:14,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-07 05:08:14,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670855285] [2020-11-07 05:08:14,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:14,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:08:14,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521453051] [2020-11-07 05:08:14,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:08:14,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:14,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:08:14,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:08:14,715 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 8 states. [2020-11-07 05:08:15,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:15,214 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-11-07 05:08:15,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 05:08:15,215 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-11-07 05:08:15,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:15,217 INFO L225 Difference]: With dead ends: 41 [2020-11-07 05:08:15,217 INFO L226 Difference]: Without dead ends: 35 [2020-11-07 05:08:15,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-11-07 05:08:15,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-07 05:08:15,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-07 05:08:15,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-07 05:08:15,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-11-07 05:08:15,236 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2020-11-07 05:08:15,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:15,236 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-11-07 05:08:15,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:08:15,237 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-11-07 05:08:15,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 05:08:15,238 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:15,239 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:15,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:08:15,240 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:15,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:15,240 INFO L82 PathProgramCache]: Analyzing trace with hash 819538851, now seen corresponding path program 2 times [2020-11-07 05:08:15,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:15,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766666062] [2020-11-07 05:08:15,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-07 05:08:15,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766666062] [2020-11-07 05:08:15,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:15,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:08:15,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176711744] [2020-11-07 05:08:15,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:08:15,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:15,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:08:15,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:08:15,548 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 10 states. [2020-11-07 05:08:16,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:16,129 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2020-11-07 05:08:16,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 05:08:16,132 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-11-07 05:08:16,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:16,135 INFO L225 Difference]: With dead ends: 45 [2020-11-07 05:08:16,135 INFO L226 Difference]: Without dead ends: 39 [2020-11-07 05:08:16,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-11-07 05:08:16,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-07 05:08:16,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-07 05:08:16,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-07 05:08:16,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-11-07 05:08:16,163 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 39 [2020-11-07 05:08:16,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:16,165 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-11-07 05:08:16,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:08:16,165 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-11-07 05:08:16,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-07 05:08:16,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:16,170 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:08:16,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:08:16,171 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:16,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:16,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1214666029, now seen corresponding path program 3 times [2020-11-07 05:08:16,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:16,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516765187] [2020-11-07 05:08:16,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:08:16,240 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:08:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:08:16,289 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:08:16,340 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 05:08:16,340 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 05:08:16,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:08:16,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:08:16 BoogieIcfgContainer [2020-11-07 05:08:16,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 05:08:16,428 INFO L168 Benchmark]: Toolchain (without parser) took 3806.50 ms. Allocated memory was 151.0 MB in the beginning and 211.8 MB in the end (delta: 60.8 MB). Free memory was 127.8 MB in the beginning and 166.9 MB in the end (delta: -39.1 MB). Peak memory consumption was 22.4 MB. Max. memory is 8.0 GB. [2020-11-07 05:08:16,428 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:08:16,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.58 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 118.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 05:08:16,432 INFO L168 Benchmark]: Boogie Preprocessor took 35.53 ms. Allocated memory is still 151.0 MB. Free memory was 118.2 MB in the beginning and 116.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 05:08:16,435 INFO L168 Benchmark]: RCFGBuilder took 382.04 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 104.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-07 05:08:16,436 INFO L168 Benchmark]: TraceAbstraction took 3125.88 ms. Allocated memory was 151.0 MB in the beginning and 211.8 MB in the end (delta: 60.8 MB). Free memory was 103.7 MB in the beginning and 166.9 MB in the end (delta: -63.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:08:16,441 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 249.58 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 118.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.53 ms. Allocated memory is still 151.0 MB. Free memory was 118.2 MB in the beginning and 116.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 382.04 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 104.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3125.88 ms. Allocated memory was 151.0 MB in the beginning and 211.8 MB in the end (delta: 60.8 MB). Free memory was 103.7 MB in the beginning and 166.9 MB in the end (delta: -63.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int input = __VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=3, input=3] [L13] CALL, EXPR id(input) VAL [\old(x)=3] [L7] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L8] CALL, EXPR id(x-1) VAL [\old(x)=2] [L7] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L8] CALL, EXPR id(x-1) VAL [\old(x)=1] [L7] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L8] CALL, EXPR id(x-1) VAL [\old(x)=0] [L7] COND TRUE x==0 VAL [\old(x)=0, x=0] [L7] return 0; VAL [\old(x)=0, \result=0, x=0] [L8] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L8] return id(x-1) + 1; VAL [\old(x)=1, \result=1, id(x-1)=0, x=1] [L8] RET, EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L8] return id(x-1) + 1; VAL [\old(x)=2, \result=2, id(x-1)=1, x=2] [L8] RET, EXPR id(x-1) VAL [\old(x)=3, id(x-1)=2, x=3] [L8] return id(x-1) + 1; VAL [\old(x)=3, \result=3, id(x-1)=2, x=3] [L13] RET, EXPR id(input) VAL [id(input)=3, input=3] [L13] unsigned int result = id(input); VAL [id(input)=3, input=3, result=3] [L14] COND TRUE result == 3 VAL [input=3, result=3] [L15] CALL reach_error() [L4] __assert_fail("0", "id_o3.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 86 SDtfs, 69 SDslu, 241 SDs, 0 SdLazy, 304 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 11393 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 9/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...