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/array-tiling/nr5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:30:30,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:30:30,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:30:30,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:30:30,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:30:30,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:30:30,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:30:30,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:30:30,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:30:30,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:30:30,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:30:30,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:30:30,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:30:30,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:30:30,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:30:30,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:30:30,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:30:30,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:30:30,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:30:30,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:30:30,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:30:30,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:30:30,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:30:30,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:30:30,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:30:30,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:30:30,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:30:30,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:30:30,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:30:30,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:30:30,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:30:30,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:30:30,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:30:30,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:30:30,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:30:30,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:30:30,970 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 16:30:30,985 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:30:30,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:30:30,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:30:30,986 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:30:30,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:30:30,987 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:30:30,987 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:30:30,987 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:30:30,987 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:30:30,987 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:30:30,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:30:30,988 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:30:30,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:30:30,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:30:30,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:30:30,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:30:30,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:30:30,990 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:30:30,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:30:30,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:30:30,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:30:30,990 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:30:30,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:30:30,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:30:30,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:30:30,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:30:30,991 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:30:30,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:30:30,992 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:30:30,992 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:30:31,035 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:30:31,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:30:31,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:30:31,050 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:30:31,050 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:30:31,051 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/nr5.c [2019-10-02 16:30:31,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcd880f9f/b2c75f7f7c514c70ad02f88f98397b58/FLAG4c9a10c2d [2019-10-02 16:30:31,589 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:30:31,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/nr5.c [2019-10-02 16:30:31,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcd880f9f/b2c75f7f7c514c70ad02f88f98397b58/FLAG4c9a10c2d [2019-10-02 16:30:31,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcd880f9f/b2c75f7f7c514c70ad02f88f98397b58 [2019-10-02 16:30:31,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:30:31,959 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:30:31,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:31,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:30:31,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:30:31,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:31" (1/1) ... [2019-10-02 16:30:31,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78605420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:31, skipping insertion in model container [2019-10-02 16:30:31,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:31" (1/1) ... [2019-10-02 16:30:31,975 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:30:31,994 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:30:32,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:32,222 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:30:32,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:32,356 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:30:32,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:32 WrapperNode [2019-10-02 16:30:32,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:32,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:30:32,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:30:32,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:30:32,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:32" (1/1) ... [2019-10-02 16:30:32,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:32" (1/1) ... [2019-10-02 16:30:32,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:32" (1/1) ... [2019-10-02 16:30:32,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:32" (1/1) ... [2019-10-02 16:30:32,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:32" (1/1) ... [2019-10-02 16:30:32,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:32" (1/1) ... [2019-10-02 16:30:32,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:32" (1/1) ... [2019-10-02 16:30:32,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:30:32,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:30:32,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:30:32,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:30:32,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:32" (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 16:30:32,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:30:32,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:30:32,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:30:32,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:30:32,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:30:32,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 16:30:32,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:30:32,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:30:32,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:30:32,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:30:32,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:30:32,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:30:32,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:30:32,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:30:32,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:30:32,786 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:30:32,787 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-02 16:30:32,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:32 BoogieIcfgContainer [2019-10-02 16:30:32,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:30:32,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:30:32,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:30:32,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:30:32,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:30:31" (1/3) ... [2019-10-02 16:30:32,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b359c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:32, skipping insertion in model container [2019-10-02 16:30:32,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:32" (2/3) ... [2019-10-02 16:30:32,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b359c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:32, skipping insertion in model container [2019-10-02 16:30:32,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:32" (3/3) ... [2019-10-02 16:30:32,809 INFO L109 eAbstractionObserver]: Analyzing ICFG nr5.c [2019-10-02 16:30:32,829 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:30:32,845 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:30:32,859 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:30:32,881 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:30:32,881 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:30:32,881 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:30:32,881 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:30:32,881 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:30:32,881 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:30:32,882 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:30:32,882 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:30:32,894 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-10-02 16:30:32,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 16:30:32,903 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:32,904 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:32,906 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:32,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:32,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1453831941, now seen corresponding path program 1 times [2019-10-02 16:30:32,913 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:32,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:32,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:32,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:32,964 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:33,148 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 16:30:33,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:33,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 16:30:33,151 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:33,156 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 16:30:33,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 16:30:33,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 16:30:33,171 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2019-10-02 16:30:33,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:33,247 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2019-10-02 16:30:33,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 16:30:33,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-10-02 16:30:33,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:33,259 INFO L225 Difference]: With dead ends: 37 [2019-10-02 16:30:33,260 INFO L226 Difference]: Without dead ends: 31 [2019-10-02 16:30:33,262 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 16:30:33,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-02 16:30:33,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-10-02 16:30:33,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-02 16:30:33,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-10-02 16:30:33,305 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 16 [2019-10-02 16:30:33,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:33,305 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-10-02 16:30:33,305 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 16:30:33,306 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-10-02 16:30:33,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 16:30:33,307 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:33,307 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:33,307 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:33,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:33,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1455678983, now seen corresponding path program 1 times [2019-10-02 16:30:33,308 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:33,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:33,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:33,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:33,311 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:33,509 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 16:30:33,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:33,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:30:33,510 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:33,511 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:30:33,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:30:33,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:33,514 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 4 states. [2019-10-02 16:30:33,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:33,589 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2019-10-02 16:30:33,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:30:33,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-10-02 16:30:33,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:33,593 INFO L225 Difference]: With dead ends: 35 [2019-10-02 16:30:33,593 INFO L226 Difference]: Without dead ends: 35 [2019-10-02 16:30:33,594 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:33,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-02 16:30:33,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-10-02 16:30:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-02 16:30:33,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-10-02 16:30:33,600 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 16 [2019-10-02 16:30:33,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:33,601 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-10-02 16:30:33,601 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:30:33,601 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-10-02 16:30:33,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-02 16:30:33,602 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:33,602 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:33,603 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:33,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:33,603 INFO L82 PathProgramCache]: Analyzing trace with hash -2089835012, now seen corresponding path program 1 times [2019-10-02 16:30:33,603 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:33,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:33,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:33,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:33,606 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:33,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:33,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:30:33,647 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:33,647 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:33,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:33,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:33,648 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 3 states. [2019-10-02 16:30:33,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:33,675 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-10-02 16:30:33,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:33,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-02 16:30:33,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:33,677 INFO L225 Difference]: With dead ends: 34 [2019-10-02 16:30:33,677 INFO L226 Difference]: Without dead ends: 34 [2019-10-02 16:30:33,678 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 16:30:33,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-02 16:30:33,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2019-10-02 16:30:33,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-02 16:30:33,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-10-02 16:30:33,684 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 19 [2019-10-02 16:30:33,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:33,684 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-10-02 16:30:33,684 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:33,685 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-10-02 16:30:33,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-02 16:30:33,686 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:33,686 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] [2019-10-02 16:30:33,686 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:33,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:33,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1382648830, now seen corresponding path program 1 times [2019-10-02 16:30:33,687 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:33,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:33,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:33,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:33,689 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:33,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:33,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:33,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:30:33,763 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:33,764 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:30:33,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:30:33,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:33,766 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 4 states. [2019-10-02 16:30:33,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:33,813 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2019-10-02 16:30:33,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:30:33,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2019-10-02 16:30:33,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:33,815 INFO L225 Difference]: With dead ends: 34 [2019-10-02 16:30:33,816 INFO L226 Difference]: Without dead ends: 34 [2019-10-02 16:30:33,818 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-02 16:30:33,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-02 16:30:33,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-10-02 16:30:33,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-02 16:30:33,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-10-02 16:30:33,825 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 22 [2019-10-02 16:30:33,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:33,826 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-10-02 16:30:33,826 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:30:33,826 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-10-02 16:30:33,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-02 16:30:33,827 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:33,827 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] [2019-10-02 16:30:33,828 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:33,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:33,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1124483392, now seen corresponding path program 1 times [2019-10-02 16:30:33,828 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:33,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:33,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:33,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:33,830 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:33,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:33,903 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:30:33,903 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:30:33,904 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2019-10-02 16:30:33,906 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [8], [12], [18], [20], [26], [28], [31], [35], [39], [43], [51], [56], [71], [74], [76], [82], [83], [84], [86] [2019-10-02 16:30:33,949 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:30:33,950 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:30:34,027 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:30:34,028 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 23 root evaluator evaluations with a maximum evaluation depth of 2. Performed 23 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 26 variables. [2019-10-02 16:30:34,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:34,032 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:30:34,064 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-10-02 16:30:34,065 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:30:34,070 INFO L420 sIntCurrentIteration]: We unified 21 AI predicates to 21 [2019-10-02 16:30:34,071 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:30:34,072 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:30:34,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2019-10-02 16:30:34,072 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:34,075 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:34,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:34,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:34,076 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 3 states. [2019-10-02 16:30:34,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:34,080 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-10-02 16:30:34,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:34,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-02 16:30:34,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:34,081 INFO L225 Difference]: With dead ends: 7 [2019-10-02 16:30:34,081 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:30:34,081 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 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 16:30:34,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:30:34,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:30:34,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:30:34,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:30:34,083 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-10-02 16:30:34,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:34,083 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:30:34,083 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:34,083 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:30:34,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:30:34,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:30:34 BoogieIcfgContainer [2019-10-02 16:30:34,089 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:30:34,092 INFO L168 Benchmark]: Toolchain (without parser) took 2132.04 ms. Allocated memory was 133.7 MB in the beginning and 199.8 MB in the end (delta: 66.1 MB). Free memory was 89.7 MB in the beginning and 81.7 MB in the end (delta: 7.9 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:34,094 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 133.7 MB. Free memory was 107.8 MB in the beginning and 107.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:30:34,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.02 ms. Allocated memory was 133.7 MB in the beginning and 199.8 MB in the end (delta: 66.1 MB). Free memory was 89.5 MB in the beginning and 176.7 MB in the end (delta: -87.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:34,098 INFO L168 Benchmark]: Boogie Preprocessor took 37.09 ms. Allocated memory is still 199.8 MB. Free memory was 176.7 MB in the beginning and 174.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:34,100 INFO L168 Benchmark]: RCFGBuilder took 396.43 ms. Allocated memory is still 199.8 MB. Free memory was 174.9 MB in the beginning and 158.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:34,101 INFO L168 Benchmark]: TraceAbstraction took 1292.88 ms. Allocated memory is still 199.8 MB. Free memory was 158.0 MB in the beginning and 81.7 MB in the end (delta: 76.3 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:34,110 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 133.7 MB. Free memory was 107.8 MB in the beginning and 107.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 397.02 ms. Allocated memory was 133.7 MB in the beginning and 199.8 MB in the end (delta: 66.1 MB). Free memory was 89.5 MB in the beginning and 176.7 MB in the end (delta: -87.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.09 ms. Allocated memory is still 199.8 MB. Free memory was 176.7 MB in the beginning and 174.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 396.43 ms. Allocated memory is still 199.8 MB. Free memory was 174.9 MB in the beginning and 158.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1292.88 ms. Allocated memory is still 199.8 MB. Free memory was 158.0 MB in the beginning and 81.7 MB in the end (delta: 76.3 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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, 31 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 112 SDtfs, 63 SDslu, 168 SDs, 0 SdLazy, 58 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=4, 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, 0.9444444444444445 AbsIntWeakeningRatio, 0.9523809523809523 AbsIntAvgWeakeningVarsNumRemoved, 0.7619047619047619 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2427 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 4/5 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...