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/eca-rers2012/Problem10_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 19:18:12,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 19:18:12,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 19:18:12,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 19:18:12,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 19:18:12,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 19:18:12,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 19:18:12,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 19:18:12,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 19:18:12,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 19:18:12,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 19:18:12,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 19:18:12,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 19:18:12,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 19:18:12,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 19:18:12,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 19:18:12,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 19:18:12,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 19:18:12,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 19:18:12,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 19:18:12,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 19:18:12,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 19:18:12,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 19:18:12,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 19:18:12,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 19:18:12,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 19:18:12,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 19:18:12,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 19:18:12,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 19:18:12,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 19:18:12,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 19:18:12,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 19:18:12,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 19:18:12,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 19:18:12,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 19:18:12,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 19:18:12,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 19:18:12,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 19:18:12,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 19:18:12,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 19:18:12,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 19:18:12,952 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 [2019-10-02 19:18:12,972 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 19:18:12,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 19:18:12,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 19:18:12,973 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 19:18:12,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 19:18:12,974 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 19:18:12,974 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 19:18:12,974 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 19:18:12,974 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 19:18:12,975 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 19:18:12,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 19:18:12,975 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 19:18:12,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 19:18:12,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 19:18:12,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 19:18:12,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 19:18:12,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 19:18:12,977 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 19:18:12,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 19:18:12,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 19:18:12,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 19:18:12,978 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 19:18:12,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 19:18:12,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 19:18:12,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 19:18:12,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 19:18:12,979 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 19:18:12,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 19:18:12,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 19:18:12,979 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 19:18:13,012 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 19:18:13,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 19:18:13,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 19:18:13,029 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 19:18:13,029 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 19:18:13,030 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2019-10-02 19:18:13,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f93375cd7/1febc32fff1c41789aad3307d6c35db1/FLAG03be87aad [2019-10-02 19:18:13,636 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 19:18:13,637 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2019-10-02 19:18:13,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f93375cd7/1febc32fff1c41789aad3307d6c35db1/FLAG03be87aad [2019-10-02 19:18:13,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f93375cd7/1febc32fff1c41789aad3307d6c35db1 [2019-10-02 19:18:13,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 19:18:13,936 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 19:18:13,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 19:18:13,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 19:18:13,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 19:18:13,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 07:18:13" (1/1) ... [2019-10-02 19:18:13,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0370dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:18:13, skipping insertion in model container [2019-10-02 19:18:13,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 07:18:13" (1/1) ... [2019-10-02 19:18:13,953 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 19:18:14,012 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 19:18:14,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 19:18:14,498 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 19:18:14,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 19:18:14,655 INFO L192 MainTranslator]: Completed translation [2019-10-02 19:18:14,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:18:14 WrapperNode [2019-10-02 19:18:14,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 19:18:14,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 19:18:14,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 19:18:14,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 19:18:14,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:18:14" (1/1) ... [2019-10-02 19:18:14,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:18:14" (1/1) ... [2019-10-02 19:18:14,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:18:14" (1/1) ... [2019-10-02 19:18:14,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:18:14" (1/1) ... [2019-10-02 19:18:14,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:18:14" (1/1) ... [2019-10-02 19:18:14,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:18:14" (1/1) ... [2019-10-02 19:18:14,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:18:14" (1/1) ... [2019-10-02 19:18:14,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 19:18:14,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 19:18:14,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 19:18:14,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 19:18:14,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:18:14" (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 [2019-10-02 19:18:14,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 19:18:14,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 19:18:14,843 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 19:18:14,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 19:18:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 19:18:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 19:18:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 19:18:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 19:18:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 19:18:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 19:18:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 19:18:16,363 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 19:18:16,363 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 19:18:16,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 07:18:16 BoogieIcfgContainer [2019-10-02 19:18:16,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 19:18:16,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 19:18:16,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 19:18:16,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 19:18:16,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 07:18:13" (1/3) ... [2019-10-02 19:18:16,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b28eea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 07:18:16, skipping insertion in model container [2019-10-02 19:18:16,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:18:14" (2/3) ... [2019-10-02 19:18:16,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b28eea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 07:18:16, skipping insertion in model container [2019-10-02 19:18:16,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 07:18:16" (3/3) ... [2019-10-02 19:18:16,374 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label52.c [2019-10-02 19:18:16,385 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 19:18:16,394 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 19:18:16,411 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 19:18:16,443 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 19:18:16,444 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 19:18:16,444 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 19:18:16,444 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 19:18:16,445 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 19:18:16,445 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 19:18:16,445 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 19:18:16,446 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 19:18:16,483 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-10-02 19:18:16,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-02 19:18:16,498 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:18:16,499 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 19:18:16,502 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:18:16,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:18:16,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1515832586, now seen corresponding path program 1 times [2019-10-02 19:18:16,511 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:18:16,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:18:16,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:18:16,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:18:16,571 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:18:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:18:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 19:18:16,901 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 19:18:16,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 19:18:16,902 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:18:16,907 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 19:18:16,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 19:18:16,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 19:18:16,926 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2019-10-02 19:18:17,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 19:18:17,947 INFO L93 Difference]: Finished difference Result 362 states and 555 transitions. [2019-10-02 19:18:17,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 19:18:17,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-02 19:18:17,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 19:18:17,979 INFO L225 Difference]: With dead ends: 362 [2019-10-02 19:18:17,980 INFO L226 Difference]: Without dead ends: 294 [2019-10-02 19:18:17,984 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 19:18:18,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-10-02 19:18:18,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2019-10-02 19:18:18,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-10-02 19:18:18,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 446 transitions. [2019-10-02 19:18:18,099 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 446 transitions. Word has length 47 [2019-10-02 19:18:18,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 19:18:18,100 INFO L475 AbstractCegarLoop]: Abstraction has 294 states and 446 transitions. [2019-10-02 19:18:18,100 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 19:18:18,100 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 446 transitions. [2019-10-02 19:18:18,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-02 19:18:18,106 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:18:18,107 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 19:18:18,107 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:18:18,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:18:18,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1601579245, now seen corresponding path program 1 times [2019-10-02 19:18:18,108 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:18:18,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:18:18,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:18:18,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:18:18,110 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:18:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:18:18,314 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 19:18:18,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 19:18:18,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 19:18:18,314 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:18:18,317 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 19:18:18,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 19:18:18,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 19:18:18,318 INFO L87 Difference]: Start difference. First operand 294 states and 446 transitions. Second operand 6 states. [2019-10-02 19:18:19,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 19:18:19,287 INFO L93 Difference]: Finished difference Result 453 states and 640 transitions. [2019-10-02 19:18:19,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 19:18:19,288 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-02 19:18:19,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 19:18:19,292 INFO L225 Difference]: With dead ends: 453 [2019-10-02 19:18:19,292 INFO L226 Difference]: Without dead ends: 453 [2019-10-02 19:18:19,293 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-02 19:18:19,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2019-10-02 19:18:19,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 445. [2019-10-02 19:18:19,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2019-10-02 19:18:19,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 626 transitions. [2019-10-02 19:18:19,324 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 626 transitions. Word has length 120 [2019-10-02 19:18:19,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 19:18:19,324 INFO L475 AbstractCegarLoop]: Abstraction has 445 states and 626 transitions. [2019-10-02 19:18:19,324 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 19:18:19,325 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 626 transitions. [2019-10-02 19:18:19,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-02 19:18:19,327 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:18:19,327 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 19:18:19,328 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:18:19,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:18:19,328 INFO L82 PathProgramCache]: Analyzing trace with hash -446355495, now seen corresponding path program 1 times [2019-10-02 19:18:19,328 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:18:19,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:18:19,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:18:19,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:18:19,330 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:18:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:18:19,472 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 19:18:19,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 19:18:19,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 19:18:19,474 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:18:19,477 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 19:18:19,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 19:18:19,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 19:18:19,478 INFO L87 Difference]: Start difference. First operand 445 states and 626 transitions. Second operand 4 states. [2019-10-02 19:18:20,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 19:18:20,588 INFO L93 Difference]: Finished difference Result 1021 states and 1340 transitions. [2019-10-02 19:18:20,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 19:18:20,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-10-02 19:18:20,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 19:18:20,590 INFO L225 Difference]: With dead ends: 1021 [2019-10-02 19:18:20,590 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 19:18:20,590 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 19:18:20,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 19:18:20,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 19:18:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 19:18:20,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 19:18:20,591 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 126 [2019-10-02 19:18:20,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 19:18:20,592 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 19:18:20,592 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 19:18:20,592 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 19:18:20,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 19:18:20,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 07:18:20 BoogieIcfgContainer [2019-10-02 19:18:20,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 19:18:20,599 INFO L168 Benchmark]: Toolchain (without parser) took 6662.10 ms. Allocated memory was 132.1 MB in the beginning and 335.0 MB in the end (delta: 202.9 MB). Free memory was 84.4 MB in the beginning and 220.5 MB in the end (delta: -136.1 MB). Peak memory consumption was 66.8 MB. Max. memory is 7.1 GB. [2019-10-02 19:18:20,600 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 132.1 MB. Free memory is still 104.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-02 19:18:20,601 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.95 ms. Allocated memory was 132.1 MB in the beginning and 201.9 MB in the end (delta: 69.7 MB). Free memory was 84.4 MB in the beginning and 162.7 MB in the end (delta: -78.3 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB. [2019-10-02 19:18:20,602 INFO L168 Benchmark]: Boogie Preprocessor took 114.02 ms. Allocated memory is still 201.9 MB. Free memory was 162.7 MB in the beginning and 157.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2019-10-02 19:18:20,603 INFO L168 Benchmark]: RCFGBuilder took 1594.40 ms. Allocated memory was 201.9 MB in the beginning and 224.4 MB in the end (delta: 22.5 MB). Free memory was 157.8 MB in the beginning and 172.8 MB in the end (delta: -15.0 MB). Peak memory consumption was 89.4 MB. Max. memory is 7.1 GB. [2019-10-02 19:18:20,604 INFO L168 Benchmark]: TraceAbstraction took 4230.06 ms. Allocated memory was 224.4 MB in the beginning and 335.0 MB in the end (delta: 110.6 MB). Free memory was 172.8 MB in the beginning and 220.5 MB in the end (delta: -47.7 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. [2019-10-02 19:18:20,607 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 132.1 MB. Free memory is still 104.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.95 ms. Allocated memory was 132.1 MB in the beginning and 201.9 MB in the end (delta: 69.7 MB). Free memory was 84.4 MB in the beginning and 162.7 MB in the end (delta: -78.3 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.02 ms. Allocated memory is still 201.9 MB. Free memory was 162.7 MB in the beginning and 157.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1594.40 ms. Allocated memory was 201.9 MB in the beginning and 224.4 MB in the end (delta: 22.5 MB). Free memory was 157.8 MB in the beginning and 172.8 MB in the end (delta: -15.0 MB). Peak memory consumption was 89.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4230.06 ms. Allocated memory was 224.4 MB in the beginning and 335.0 MB in the end (delta: 110.6 MB). Free memory was 172.8 MB in the beginning and 220.5 MB in the end (delta: -47.7 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 127]: 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, 215 locations, 1 error locations. SAFE Result, 4.1s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 81 SDtfs, 1009 SDslu, 64 SDs, 0 SdLazy, 1716 SolverSat, 483 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=445occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 290 ConstructedInterpolants, 0 QuantifiedInterpolants, 72460 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 80/80 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...