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/geo2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 13:19:14,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 13:19:14,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 13:19:14,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-05 13:19:14,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-05 13:19:14,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-05 13:19:14,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-05 13:19:14,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-05 13:19:14,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-05 13:19:14,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-05 13:19:14,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-05 13:19:14,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-05 13:19:14,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 13:19:14,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 13:19:14,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 13:19:14,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 13:19:14,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 13:19:14,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 13:19:14,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 13:19:14,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 13:19:14,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 13:19:14,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 13:19:14,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 13:19:14,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 13:19:14,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-05 13:19:14,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-05 13:19:14,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-05 13:19:14,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-05 13:19:14,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-05 13:19:14,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-05 13:19:14,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-05 13:19:14,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-05 13:19:14,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-05 13:19:14,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 13:19:14,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 13:19:14,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 13:19:14,977 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 [2019-09-05 13:19:15,004 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 13:19:15,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 13:19:15,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-05 13:19:15,005 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-05 13:19:15,005 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-05 13:19:15,006 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-05 13:19:15,006 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-05 13:19:15,006 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-05 13:19:15,006 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-05 13:19:15,006 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-05 13:19:15,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 13:19:15,007 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 13:19:15,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 13:19:15,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 13:19:15,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 13:19:15,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 13:19:15,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 13:19:15,008 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 13:19:15,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 13:19:15,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 13:19:15,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 13:19:15,009 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-05 13:19:15,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 13:19:15,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 13:19:15,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 13:19:15,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 13:19:15,010 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-05 13:19:15,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 13:19:15,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 13:19:15,011 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-05 13:19:15,054 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 13:19:15,062 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 13:19:15,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 13:19:15,067 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 13:19:15,067 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 13:19:15,068 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo2.c [2019-09-05 13:19:15,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d71934577/4f058ba9fbf24a0abfe7e252776ae906/FLAGff4e5e4be [2019-09-05 13:19:15,567 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 13:19:15,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo2.c [2019-09-05 13:19:15,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d71934577/4f058ba9fbf24a0abfe7e252776ae906/FLAGff4e5e4be [2019-09-05 13:19:15,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d71934577/4f058ba9fbf24a0abfe7e252776ae906 [2019-09-05 13:19:16,004 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 13:19:16,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 13:19:16,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 13:19:16,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 13:19:16,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 13:19:16,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:19:15" (1/1) ... [2019-09-05 13:19:16,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9fa8fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:19:16, skipping insertion in model container [2019-09-05 13:19:16,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:19:15" (1/1) ... [2019-09-05 13:19:16,020 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 13:19:16,036 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 13:19:16,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:19:16,214 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 13:19:16,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:19:16,248 INFO L192 MainTranslator]: Completed translation [2019-09-05 13:19:16,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:19:16 WrapperNode [2019-09-05 13:19:16,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 13:19:16,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 13:19:16,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 13:19:16,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 13:19:16,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:19:16" (1/1) ... [2019-09-05 13:19:16,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:19:16" (1/1) ... [2019-09-05 13:19:16,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:19:16" (1/1) ... [2019-09-05 13:19:16,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:19:16" (1/1) ... [2019-09-05 13:19:16,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:19:16" (1/1) ... [2019-09-05 13:19:16,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:19:16" (1/1) ... [2019-09-05 13:19:16,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:19:16" (1/1) ... [2019-09-05 13:19:16,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 13:19:16,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 13:19:16,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 13:19:16,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 13:19:16,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:19:16" (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 [2019-09-05 13:19:16,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 13:19:16,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 13:19:16,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 13:19:16,434 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 13:19:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 13:19:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-05 13:19:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-05 13:19:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 13:19:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 13:19:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 13:19:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 13:19:16,599 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 13:19:16,599 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-05 13:19:16,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:19:16 BoogieIcfgContainer [2019-09-05 13:19:16,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 13:19:16,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 13:19:16,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 13:19:16,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 13:19:16,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 01:19:15" (1/3) ... [2019-09-05 13:19:16,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643b6a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 01:19:16, skipping insertion in model container [2019-09-05 13:19:16,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:19:16" (2/3) ... [2019-09-05 13:19:16,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643b6a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 01:19:16, skipping insertion in model container [2019-09-05 13:19:16,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:19:16" (3/3) ... [2019-09-05 13:19:16,628 INFO L109 eAbstractionObserver]: Analyzing ICFG geo2.c [2019-09-05 13:19:16,659 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 13:19:16,677 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 13:19:16,705 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 13:19:16,740 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 13:19:16,740 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-05 13:19:16,740 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 13:19:16,741 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 13:19:16,741 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 13:19:16,741 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 13:19:16,741 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 13:19:16,741 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 13:19:16,756 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-09-05 13:19:16,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 13:19:16,766 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:19:16,767 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:19:16,770 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:19:16,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:19:16,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1712389503, now seen corresponding path program 1 times [2019-09-05 13:19:16,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:19:16,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:19:16,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:19:16,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:19:16,815 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:19:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:19:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:19:16,870 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 13:19:16,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 13:19:16,870 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 13:19:16,874 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 13:19:16,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 13:19:16,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 13:19:16,887 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-09-05 13:19:16,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:19:16,902 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-09-05 13:19:16,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 13:19:16,903 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-05 13:19:16,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:19:16,911 INFO L225 Difference]: With dead ends: 20 [2019-09-05 13:19:16,911 INFO L226 Difference]: Without dead ends: 15 [2019-09-05 13:19:16,913 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 [2019-09-05 13:19:16,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-05 13:19:16,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-05 13:19:16,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-05 13:19:16,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-09-05 13:19:16,943 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-09-05 13:19:16,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:19:16,944 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-09-05 13:19:16,944 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 13:19:16,944 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-09-05 13:19:16,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 13:19:16,945 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:19:16,945 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:19:16,945 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:19:16,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:19:16,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1704941753, now seen corresponding path program 1 times [2019-09-05 13:19:16,946 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:19:16,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:19:16,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:19:16,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:19:16,948 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:19:16,954 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 13:19:16,954 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 13:19:16,954 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 [2019-09-05 13:19:17,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:19:17,001 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-05 13:19:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:19:17,015 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-05 13:19:17,015 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-05 13:19:17,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 13:19:17,016 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 [2019-09-05 13:19:17,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:19:17,031 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-05 13:19:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:19:17,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-05 13:19:17,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 13:19:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:19:17,142 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 13:19:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:19:17,227 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-05 13:19:17,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-09-05 13:19:17,228 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 13:19:17,229 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-05 13:19:17,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-05 13:19:17,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-05 13:19:17,234 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2019-09-05 13:19:17,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:19:17,306 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-09-05 13:19:17,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-05 13:19:17,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-05 13:19:17,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:19:17,307 INFO L225 Difference]: With dead ends: 23 [2019-09-05 13:19:17,308 INFO L226 Difference]: Without dead ends: 22 [2019-09-05 13:19:17,309 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-05 13:19:17,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-05 13:19:17,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-09-05 13:19:17,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-05 13:19:17,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-09-05 13:19:17,323 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2019-09-05 13:19:17,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:19:17,324 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-09-05 13:19:17,325 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-05 13:19:17,325 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-09-05 13:19:17,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-05 13:19:17,327 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:19:17,328 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:19:17,328 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:19:17,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:19:17,329 INFO L82 PathProgramCache]: Analyzing trace with hash 241116926, now seen corresponding path program 1 times [2019-09-05 13:19:17,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:19:17,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:19:17,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:19:17,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:19:17,335 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:19:17,347 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 13:19:17,347 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 13:19:17,347 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 13:19:17,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:19:17,370 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-05 13:19:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:19:17,390 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2019-09-05 13:19:17,392 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [19], [26], [29], [31], [34], [36], [37], [38], [39], [41], [42] [2019-09-05 13:19:17,437 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-05 13:19:17,438 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-05 13:19:17,766 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-05 13:19:17,769 INFO L272 AbstractInterpreter]: Visited 14 different actions 59 times. Merged at 3 different actions 15 times. Widened at 1 different actions 1 times. Performed 101 root evaluator evaluations with a maximum evaluation depth of 10. Performed 101 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 1 fixpoints after 1 different actions. Largest state had 7 variables. [2019-09-05 13:19:17,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:19:17,773 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-05 13:19:17,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 13:19:17,774 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 13:19:17,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:19:17,790 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-05 13:19:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:19:17,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-05 13:19:17,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 13:19:17,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:19:17,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:19:17,938 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 13:19:18,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:19:18,055 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:19:18,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:19:18,105 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 13:19:18,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-09-05 13:19:18,105 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-05 13:19:18,106 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-05 13:19:18,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-05 13:19:18,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-09-05 13:19:18,107 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 13 states. [2019-09-05 13:19:18,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:19:18,220 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-09-05 13:19:18,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-05 13:19:18,221 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2019-09-05 13:19:18,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:19:18,221 INFO L225 Difference]: With dead ends: 24 [2019-09-05 13:19:18,222 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 13:19:18,222 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-09-05 13:19:18,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 13:19:18,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 13:19:18,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 13:19:18,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 13:19:18,223 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-09-05 13:19:18,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:19:18,224 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 13:19:18,224 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-05 13:19:18,224 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 13:19:18,224 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 13:19:18,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 01:19:18 BoogieIcfgContainer [2019-09-05 13:19:18,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 13:19:18,232 INFO L168 Benchmark]: Toolchain (without parser) took 2225.89 ms. Allocated memory was 135.3 MB in the beginning and 224.9 MB in the end (delta: 89.7 MB). Free memory was 86.3 MB in the beginning and 179.4 MB in the end (delta: -93.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-05 13:19:18,233 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 135.3 MB. Free memory was 104.7 MB in the beginning and 104.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 13:19:18,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.94 ms. Allocated memory is still 135.3 MB. Free memory was 86.1 MB in the beginning and 76.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-05 13:19:18,235 INFO L168 Benchmark]: Boogie Preprocessor took 133.81 ms. Allocated memory was 135.3 MB in the beginning and 200.8 MB in the end (delta: 65.5 MB). Free memory was 76.8 MB in the beginning and 178.0 MB in the end (delta: -101.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2019-09-05 13:19:18,236 INFO L168 Benchmark]: RCFGBuilder took 217.21 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 167.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-09-05 13:19:18,237 INFO L168 Benchmark]: TraceAbstraction took 1621.42 ms. Allocated memory was 200.8 MB in the beginning and 224.9 MB in the end (delta: 24.1 MB). Free memory was 167.0 MB in the beginning and 179.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-09-05 13:19:18,241 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 135.3 MB. Free memory was 104.7 MB in the beginning and 104.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 242.94 ms. Allocated memory is still 135.3 MB. Free memory was 86.1 MB in the beginning and 76.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.81 ms. Allocated memory was 135.3 MB in the beginning and 200.8 MB in the end (delta: 65.5 MB). Free memory was 76.8 MB in the beginning and 178.0 MB in the end (delta: -101.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 217.21 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 167.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1621.42 ms. Allocated memory was 200.8 MB in the beginning and 224.9 MB in the end (delta: 24.1 MB). Free memory was 167.0 MB in the beginning and 179.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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, 20 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 46 SDtfs, 22 SDslu, 104 SDs, 0 SdLazy, 62 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 59 ConstructedInterpolants, 2 QuantifiedInterpolants, 3381 SizeOfPredicates, 7 NumberOfNonLiveVariables, 85 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...