java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loop-lit/mcmillan2006.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:09:10,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:09:10,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:09:10,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 02:09:10,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 02:09:10,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 02:09:10,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 02:09:10,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 02:09:10,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 02:09:10,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 02:09:10,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 02:09:10,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 02:09:10,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 02:09:10,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 02:09:10,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 02:09:10,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 02:09:10,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 02:09:10,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 02:09:10,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 02:09:10,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 02:09:10,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 02:09:10,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 02:09:10,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 02:09:10,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 02:09:10,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 02:09:10,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 02:09:10,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 02:09:10,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 02:09:10,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 02:09:10,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 02:09:10,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 02:09:10,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 02:09:10,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 02:09:10,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 02:09:10,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 02:09:10,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 02:09:10,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 02:09:10,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 02:09:10,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 02:09:10,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 02:09:10,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 02:09:10,934 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 [2019-09-10 02:09:10,948 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:09:10,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:09:10,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:09:10,948 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:09:10,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:09:10,949 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:09:10,949 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:09:10,950 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:09:10,950 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:09:10,950 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:09:10,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:09:10,951 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:09:10,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:09:10,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:09:10,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:09:10,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:09:10,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:09:10,952 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:09:10,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:09:10,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:09:10,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:09:10,953 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:09:10,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:09:10,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:09:10,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:09:10,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:09:10,954 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:09:10,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:09:10,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:09:10,954 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:09:10,993 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:09:11,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:09:11,010 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:09:11,013 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:09:11,014 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:09:11,014 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/mcmillan2006.i [2019-09-10 02:09:11,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1aff3a985/de0cf37feea044a5a3a54032bd94f94f/FLAG3986460b7 [2019-09-10 02:09:11,515 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:09:11,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/mcmillan2006.i [2019-09-10 02:09:11,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1aff3a985/de0cf37feea044a5a3a54032bd94f94f/FLAG3986460b7 [2019-09-10 02:09:11,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1aff3a985/de0cf37feea044a5a3a54032bd94f94f [2019-09-10 02:09:11,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:09:11,956 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:09:11,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:09:11,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:09:11,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:09:11,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:09:11" (1/1) ... [2019-09-10 02:09:11,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f766b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:09:11, skipping insertion in model container [2019-09-10 02:09:11,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:09:11" (1/1) ... [2019-09-10 02:09:11,971 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:09:11,987 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:09:12,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:09:12,189 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:09:12,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:09:12,216 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:09:12,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:09:12 WrapperNode [2019-09-10 02:09:12,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:09:12,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:09:12,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:09:12,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:09:12,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:09:12" (1/1) ... [2019-09-10 02:09:12,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:09:12" (1/1) ... [2019-09-10 02:09:12,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:09:12" (1/1) ... [2019-09-10 02:09:12,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:09:12" (1/1) ... [2019-09-10 02:09:12,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:09:12" (1/1) ... [2019-09-10 02:09:12,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:09:12" (1/1) ... [2019-09-10 02:09:12,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:09:12" (1/1) ... [2019-09-10 02:09:12,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:09:12,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:09:12,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:09:12,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:09:12,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:09:12" (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 [2019-09-10 02:09:12,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:09:12,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:09:12,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 02:09:12,398 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:09:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 02:09:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:09:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 02:09:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 02:09:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 02:09:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:09:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 02:09:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 02:09:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 02:09:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:09:12,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:09:12,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 02:09:12,656 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:09:12,656 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-10 02:09:12,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:09:12 BoogieIcfgContainer [2019-09-10 02:09:12,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:09:12,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:09:12,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:09:12,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:09:12,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:09:11" (1/3) ... [2019-09-10 02:09:12,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d67f6d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:09:12, skipping insertion in model container [2019-09-10 02:09:12,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:09:12" (2/3) ... [2019-09-10 02:09:12,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d67f6d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:09:12, skipping insertion in model container [2019-09-10 02:09:12,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:09:12" (3/3) ... [2019-09-10 02:09:12,665 INFO L109 eAbstractionObserver]: Analyzing ICFG mcmillan2006.i [2019-09-10 02:09:12,675 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:09:12,681 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:09:12,697 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:09:12,722 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:09:12,723 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:09:12,723 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:09:12,723 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:09:12,723 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:09:12,723 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:09:12,723 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:09:12,724 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:09:12,737 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-09-10 02:09:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-10 02:09:12,746 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:09:12,747 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:09:12,749 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:09:12,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:09:12,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1448943433, now seen corresponding path program 1 times [2019-09-10 02:09:12,755 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:09:12,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:09:12,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:09:12,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:09:12,792 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:09:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:09:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:09:12,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:09:12,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 02:09:12,875 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:09:12,879 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:09:12,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:09:12,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:09:12,891 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-09-10 02:09:12,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:09:12,905 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-09-10 02:09:12,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:09:12,906 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-09-10 02:09:12,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:09:12,915 INFO L225 Difference]: With dead ends: 25 [2019-09-10 02:09:12,915 INFO L226 Difference]: Without dead ends: 20 [2019-09-10 02:09:12,917 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 [2019-09-10 02:09:12,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-09-10 02:09:12,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-09-10 02:09:12,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-10 02:09:12,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-09-10 02:09:12,951 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2019-09-10 02:09:12,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:09:12,952 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-09-10 02:09:12,952 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:09:12,952 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-09-10 02:09:12,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-10 02:09:12,953 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:09:12,953 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:09:12,954 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:09:12,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:09:12,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1815969073, now seen corresponding path program 1 times [2019-09-10 02:09:12,954 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:09:12,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:09:12,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:09:12,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:09:12,956 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:09:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:09:13,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:09:13,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:09:13,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 02:09:13,056 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:09:13,060 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:09:13,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:09:13,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:09:13,061 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2019-09-10 02:09:13,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:09:13,128 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2019-09-10 02:09:13,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:09:13,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-09-10 02:09:13,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:09:13,130 INFO L225 Difference]: With dead ends: 24 [2019-09-10 02:09:13,130 INFO L226 Difference]: Without dead ends: 22 [2019-09-10 02:09:13,131 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:09:13,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-10 02:09:13,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2019-09-10 02:09:13,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-10 02:09:13,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-09-10 02:09:13,137 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2019-09-10 02:09:13,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:09:13,137 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-09-10 02:09:13,138 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:09:13,138 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-09-10 02:09:13,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-10 02:09:13,139 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:09:13,139 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:09:13,139 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:09:13,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:09:13,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1419508495, now seen corresponding path program 1 times [2019-09-10 02:09:13,140 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:09:13,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:09:13,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:09:13,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:09:13,142 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:09:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:09:13,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:09:13,499 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:09:13,500 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:09:13,501 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2019-09-10 02:09:13,503 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [17], [19], [23], [31], [41], [44], [46], [52], [53], [54], [56] [2019-09-10 02:09:13,542 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:09:13,542 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:09:13,654 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 02:09:13,655 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 18 root evaluator evaluations with a maximum evaluation depth of 4. Performed 18 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 22 variables. [2019-09-10 02:09:13,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:09:13,659 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 02:09:13,691 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96% of their original sizes. [2019-09-10 02:09:13,691 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 02:09:13,697 INFO L420 sIntCurrentIteration]: We unified 15 AI predicates to 15 [2019-09-10 02:09:13,697 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 02:09:13,698 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 02:09:13,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2019-09-10 02:09:13,698 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:09:13,699 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 02:09:13,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 02:09:13,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:09:13,700 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 3 states. [2019-09-10 02:09:13,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:09:13,701 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-09-10 02:09:13,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 02:09:13,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-09-10 02:09:13,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:09:13,702 INFO L225 Difference]: With dead ends: 7 [2019-09-10 02:09:13,702 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:09:13,702 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:09:13,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:09:13,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:09:13,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:09:13,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:09:13,703 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-09-10 02:09:13,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:09:13,704 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:09:13,704 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 02:09:13,704 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:09:13,704 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:09:13,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:09:13 BoogieIcfgContainer [2019-09-10 02:09:13,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:09:13,714 INFO L168 Benchmark]: Toolchain (without parser) took 1755.85 ms. Allocated memory was 135.3 MB in the beginning and 202.9 MB in the end (delta: 67.6 MB). Free memory was 92.1 MB in the beginning and 97.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB. [2019-09-10 02:09:13,717 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 135.3 MB. Free memory was 109.9 MB in the beginning and 109.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 02:09:13,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.85 ms. Allocated memory is still 135.3 MB. Free memory was 91.9 MB in the beginning and 81.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-09-10 02:09:13,720 INFO L168 Benchmark]: Boogie Preprocessor took 129.18 ms. Allocated memory was 135.3 MB in the beginning and 202.9 MB in the end (delta: 67.6 MB). Free memory was 81.8 MB in the beginning and 179.0 MB in the end (delta: -97.1 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2019-09-10 02:09:13,721 INFO L168 Benchmark]: RCFGBuilder took 310.73 ms. Allocated memory is still 202.9 MB. Free memory was 179.0 MB in the beginning and 164.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-09-10 02:09:13,723 INFO L168 Benchmark]: TraceAbstraction took 1052.36 ms. Allocated memory is still 202.9 MB. Free memory was 164.8 MB in the beginning and 97.5 MB in the end (delta: 67.2 MB). Peak memory consumption was 67.2 MB. Max. memory is 7.1 GB. [2019-09-10 02:09:13,734 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 135.3 MB. Free memory was 109.9 MB in the beginning and 109.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 259.85 ms. Allocated memory is still 135.3 MB. Free memory was 91.9 MB in the beginning and 81.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.18 ms. Allocated memory was 135.3 MB in the beginning and 202.9 MB in the end (delta: 67.6 MB). Free memory was 81.8 MB in the beginning and 179.0 MB in the end (delta: -97.1 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 310.73 ms. Allocated memory is still 202.9 MB. Free memory was 179.0 MB in the beginning and 164.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1052.36 ms. Allocated memory is still 202.9 MB. Free memory was 164.8 MB in the beginning and 97.5 MB in the end (delta: 67.2 MB). Peak memory consumption was 67.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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, 25 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 51 SDtfs, 4 SDslu, 37 SDs, 0 SdLazy, 13 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9166666666666666 AbsIntWeakeningRatio, 0.8666666666666667 AbsIntAvgWeakeningVarsNumRemoved, 0.6666666666666666 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, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 2178 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...