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/nla-digbench/lcm2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 21:12:39,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 21:12:39,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 21:12:39,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 21:12:39,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 21:12:39,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 21:12:39,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 21:12:39,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 21:12:39,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 21:12:39,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 21:12:39,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 21:12:39,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 21:12:39,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 21:12:39,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 21:12:39,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 21:12:39,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 21:12:39,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 21:12:39,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 21:12:39,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 21:12:39,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 21:12:39,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 21:12:39,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 21:12:39,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 21:12:39,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 21:12:39,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 21:12:39,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 21:12:39,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 21:12:39,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 21:12:40,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 21:12:40,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 21:12:40,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 21:12:40,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 21:12:40,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 21:12:40,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 21:12:40,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 21:12:40,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 21:12:40,008 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 [2019-09-03 21:12:40,023 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 21:12:40,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 21:12:40,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 21:12:40,024 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 21:12:40,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 21:12:40,026 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 21:12:40,026 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 21:12:40,026 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 21:12:40,027 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 21:12:40,027 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 21:12:40,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 21:12:40,028 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 21:12:40,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 21:12:40,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 21:12:40,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 21:12:40,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 21:12:40,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 21:12:40,030 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 21:12:40,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 21:12:40,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 21:12:40,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 21:12:40,031 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 21:12:40,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 21:12:40,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 21:12:40,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 21:12:40,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 21:12:40,032 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 21:12:40,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 21:12:40,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 21:12:40,033 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 21:12:40,073 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 21:12:40,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 21:12:40,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 21:12:40,090 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 21:12:40,090 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 21:12:40,090 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/lcm2.c [2019-09-03 21:12:40,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/048c9e07c/cd77917aeceb4b54b5c6a2292a891243/FLAG60937f937 [2019-09-03 21:12:40,618 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 21:12:40,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/lcm2.c [2019-09-03 21:12:40,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/048c9e07c/cd77917aeceb4b54b5c6a2292a891243/FLAG60937f937 [2019-09-03 21:12:40,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/048c9e07c/cd77917aeceb4b54b5c6a2292a891243 [2019-09-03 21:12:40,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 21:12:40,974 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 21:12:40,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 21:12:40,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 21:12:40,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 21:12:40,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 09:12:40" (1/1) ... [2019-09-03 21:12:40,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c93ca5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:12:40, skipping insertion in model container [2019-09-03 21:12:40,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 09:12:40" (1/1) ... [2019-09-03 21:12:40,990 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 21:12:41,008 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 21:12:41,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 21:12:41,242 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 21:12:41,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 21:12:41,299 INFO L192 MainTranslator]: Completed translation [2019-09-03 21:12:41,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:12:41 WrapperNode [2019-09-03 21:12:41,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 21:12:41,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 21:12:41,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 21:12:41,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 21:12:41,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:12:41" (1/1) ... [2019-09-03 21:12:41,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:12:41" (1/1) ... [2019-09-03 21:12:41,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:12:41" (1/1) ... [2019-09-03 21:12:41,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:12:41" (1/1) ... [2019-09-03 21:12:41,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:12:41" (1/1) ... [2019-09-03 21:12:41,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:12:41" (1/1) ... [2019-09-03 21:12:41,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:12:41" (1/1) ... [2019-09-03 21:12:41,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 21:12:41,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 21:12:41,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 21:12:41,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 21:12:41,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:12:41" (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 [2019-09-03 21:12:41,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 21:12:41,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 21:12:41,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 21:12:41,504 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 21:12:41,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 21:12:41,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 21:12:41,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 21:12:41,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 21:12:41,505 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 21:12:41,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 21:12:41,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 21:12:41,724 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 21:12:41,724 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 21:12:41,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 09:12:41 BoogieIcfgContainer [2019-09-03 21:12:41,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 21:12:41,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 21:12:41,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 21:12:41,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 21:12:41,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 09:12:40" (1/3) ... [2019-09-03 21:12:41,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bca7372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 09:12:41, skipping insertion in model container [2019-09-03 21:12:41,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:12:41" (2/3) ... [2019-09-03 21:12:41,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bca7372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 09:12:41, skipping insertion in model container [2019-09-03 21:12:41,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 09:12:41" (3/3) ... [2019-09-03 21:12:41,734 INFO L109 eAbstractionObserver]: Analyzing ICFG lcm2.c [2019-09-03 21:12:41,745 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 21:12:41,754 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 21:12:41,791 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 21:12:41,851 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 21:12:41,852 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 21:12:41,852 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 21:12:41,855 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 21:12:41,855 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 21:12:41,856 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 21:12:41,856 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 21:12:41,856 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 21:12:41,886 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-09-03 21:12:41,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 21:12:41,896 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:12:41,897 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:12:41,899 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:12:41,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:12:41,905 INFO L82 PathProgramCache]: Analyzing trace with hash -858950785, now seen corresponding path program 1 times [2019-09-03 21:12:41,907 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:12:41,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:12:41,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:12:41,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:12:41,955 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:12:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:12:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:12:42,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 21:12:42,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 21:12:42,033 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 21:12:42,037 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 21:12:42,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 21:12:42,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 21:12:42,055 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-09-03 21:12:42,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:12:42,074 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-09-03 21:12:42,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 21:12:42,075 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-03 21:12:42,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:12:42,084 INFO L225 Difference]: With dead ends: 21 [2019-09-03 21:12:42,084 INFO L226 Difference]: Without dead ends: 16 [2019-09-03 21:12:42,086 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 21:12:42,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-03 21:12:42,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-03 21:12:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-03 21:12:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-09-03 21:12:42,124 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2019-09-03 21:12:42,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:12:42,124 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-09-03 21:12:42,124 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 21:12:42,125 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-09-03 21:12:42,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 21:12:42,125 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:12:42,126 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:12:42,126 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:12:42,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:12:42,126 INFO L82 PathProgramCache]: Analyzing trace with hash -871939661, now seen corresponding path program 1 times [2019-09-03 21:12:42,127 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:12:42,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:12:42,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:12:42,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:12:42,128 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:12:42,137 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:12:42,138 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:12:42,138 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 21:12:42,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:12:42,153 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-03 21:12:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Exception during sending of exit command (exit): Stream closed [2019-09-03 21:12:42,169 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-03 21:12:42,169 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-03 21:12:42,169 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:12:42,170 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 21:12:42,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:12:42,188 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-03 21:12:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:12:42,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-03 21:12:42,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:12:42,317 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:12:42,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:12:42,356 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:12:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:12:42,423 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-03 21:12:42,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-09-03 21:12:42,424 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 21:12:42,424 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 21:12:42,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 21:12:42,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-03 21:12:42,426 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2019-09-03 21:12:42,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:12:42,510 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-09-03 21:12:42,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 21:12:42,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-03 21:12:42,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:12:42,515 INFO L225 Difference]: With dead ends: 25 [2019-09-03 21:12:42,515 INFO L226 Difference]: Without dead ends: 24 [2019-09-03 21:12:42,517 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-03 21:12:42,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-03 21:12:42,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-09-03 21:12:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-03 21:12:42,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-09-03 21:12:42,529 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 10 [2019-09-03 21:12:42,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:12:42,531 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-09-03 21:12:42,531 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 21:12:42,531 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-09-03 21:12:42,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-03 21:12:42,532 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:12:42,532 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:12:42,533 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:12:42,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:12:42,538 INFO L82 PathProgramCache]: Analyzing trace with hash 427538464, now seen corresponding path program 1 times [2019-09-03 21:12:42,538 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:12:42,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:12:42,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:12:42,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:12:42,540 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:12:42,558 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:12:42,558 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:12:42,558 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-03 21:12:42,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:12:42,580 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 21:12:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:12:42,599 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2019-09-03 21:12:42,601 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [19], [22], [32], [35], [37], [40], [42], [43], [44], [45], [47], [48] [2019-09-03 21:12:42,631 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-03 21:12:42,631 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-03 21:12:42,947 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-03 21:12:42,950 INFO L272 AbstractInterpreter]: Visited 15 different actions 65 times. Merged at 4 different actions 20 times. Widened at 1 different actions 1 times. Performed 122 root evaluator evaluations with a maximum evaluation depth of 8. Performed 122 inverse root evaluator evaluations with a maximum inverse evaluation depth of 8. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2019-09-03 21:12:42,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:12:42,953 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-03 21:12:42,954 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:12:42,954 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 21:12:42,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:12:42,981 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 21:12:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:12:43,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-03 21:12:43,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:12:43,068 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:12:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:12:43,110 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:12:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-03 21:12:43,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-03 21:12:43,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-03 21:12:43,211 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 21:12:43,212 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 21:12:43,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 21:12:43,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-03 21:12:43,213 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2019-09-03 21:12:43,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:12:43,263 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-09-03 21:12:43,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 21:12:43,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-09-03 21:12:43,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:12:43,264 INFO L225 Difference]: With dead ends: 21 [2019-09-03 21:12:43,264 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 21:12:43,265 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-09-03 21:12:43,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 21:12:43,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 21:12:43,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 21:12:43,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 21:12:43,266 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-09-03 21:12:43,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:12:43,267 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 21:12:43,267 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 21:12:43,267 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 21:12:43,267 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 21:12:43,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 09:12:43 BoogieIcfgContainer [2019-09-03 21:12:43,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 21:12:43,287 INFO L168 Benchmark]: Toolchain (without parser) took 2312.03 ms. Allocated memory was 129.5 MB in the beginning and 213.4 MB in the end (delta: 83.9 MB). Free memory was 84.4 MB in the beginning and 182.3 MB in the end (delta: -97.8 MB). Peak memory consumption was 94.4 MB. Max. memory is 7.1 GB. [2019-09-03 21:12:43,289 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 129.5 MB. Free memory was 102.4 MB in the beginning and 102.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 21:12:43,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.12 ms. Allocated memory is still 129.5 MB. Free memory was 84.2 MB in the beginning and 74.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-09-03 21:12:43,290 INFO L168 Benchmark]: Boogie Preprocessor took 134.43 ms. Allocated memory was 129.5 MB in the beginning and 197.1 MB in the end (delta: 67.6 MB). Free memory was 74.8 MB in the beginning and 173.4 MB in the end (delta: -98.7 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-09-03 21:12:43,291 INFO L168 Benchmark]: RCFGBuilder took 290.78 ms. Allocated memory is still 197.1 MB. Free memory was 173.4 MB in the beginning and 161.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2019-09-03 21:12:43,292 INFO L168 Benchmark]: TraceAbstraction took 1557.34 ms. Allocated memory was 197.1 MB in the beginning and 213.4 MB in the end (delta: 16.3 MB). Free memory was 161.5 MB in the beginning and 182.3 MB in the end (delta: -20.7 MB). Peak memory consumption was 103.8 MB. Max. memory is 7.1 GB. [2019-09-03 21:12:43,296 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 129.5 MB. Free memory was 102.4 MB in the beginning and 102.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 325.12 ms. Allocated memory is still 129.5 MB. Free memory was 84.2 MB in the beginning and 74.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.43 ms. Allocated memory was 129.5 MB in the beginning and 197.1 MB in the end (delta: 67.6 MB). Free memory was 74.8 MB in the beginning and 173.4 MB in the end (delta: -98.7 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 290.78 ms. Allocated memory is still 197.1 MB. Free memory was 173.4 MB in the beginning and 161.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1557.34 ms. Allocated memory was 197.1 MB in the beginning and 213.4 MB in the end (delta: 16.3 MB). Free memory was 161.5 MB in the beginning and 182.3 MB in the end (delta: -20.7 MB). Peak memory consumption was 103.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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, 21 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 44 SDtfs, 13 SDslu, 54 SDs, 0 SdLazy, 48 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 4457 SizeOfPredicates, 5 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...