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-examples/standard_init4_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:30:00,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:30:00,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:30:00,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:30:00,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:30:00,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:30:00,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:30:00,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:30:00,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:30:00,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:30:00,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:30:00,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:30:00,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:30:00,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:30:00,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:30:00,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:30:00,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:30:00,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:30:00,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:30:00,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:30:00,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:30:00,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:30:00,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:30:00,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:30:00,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:30:00,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:30:00,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:30:00,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:30:00,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:30:00,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:30:00,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:30:00,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:30:00,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:30:00,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:30:00,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:30:00,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:30:00,265 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 16:30:00,279 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:30:00,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:30:00,280 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:30:00,280 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:30:00,281 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:30:00,281 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:30:00,281 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:30:00,281 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:30:00,281 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:30:00,282 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:30:00,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:30:00,282 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:30:00,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:30:00,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:30:00,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:30:00,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:30:00,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:30:00,284 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:30:00,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:30:00,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:30:00,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:30:00,284 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:30:00,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:30:00,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:30:00,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:30:00,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:30:00,285 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:30:00,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:30:00,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:30:00,286 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:30:00,328 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:30:00,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:30:00,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:30:00,349 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:30:00,349 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:30:00,350 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init4_ground-1.i [2019-10-02 16:30:00,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ae9f044b/7e77a47a891e423e83a4a9c792cc93e8/FLAG6b65f609c [2019-10-02 16:30:00,856 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:30:00,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init4_ground-1.i [2019-10-02 16:30:00,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ae9f044b/7e77a47a891e423e83a4a9c792cc93e8/FLAG6b65f609c [2019-10-02 16:30:01,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ae9f044b/7e77a47a891e423e83a4a9c792cc93e8 [2019-10-02 16:30:01,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:30:01,281 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:30:01,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:01,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:30:01,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:30:01,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:01" (1/1) ... [2019-10-02 16:30:01,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405f9137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:01, skipping insertion in model container [2019-10-02 16:30:01,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:01" (1/1) ... [2019-10-02 16:30:01,298 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:30:01,314 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:30:01,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:01,488 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:30:01,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:01,614 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:30:01,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:01 WrapperNode [2019-10-02 16:30:01,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:01,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:30:01,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:30:01,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:30:01,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:01" (1/1) ... [2019-10-02 16:30:01,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:01" (1/1) ... [2019-10-02 16:30:01,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:01" (1/1) ... [2019-10-02 16:30:01,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:01" (1/1) ... [2019-10-02 16:30:01,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:01" (1/1) ... [2019-10-02 16:30:01,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:01" (1/1) ... [2019-10-02 16:30:01,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:01" (1/1) ... [2019-10-02 16:30:01,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:30:01,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:30:01,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:30:01,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:30:01,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:01" (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 16:30:01,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:30:01,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:30:01,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:30:01,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:30:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:30:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:30:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:30:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:30:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:30:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:30:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:30:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:30:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:30:01,942 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:30:01,942 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-02 16:30:01,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:01 BoogieIcfgContainer [2019-10-02 16:30:01,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:30:01,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:30:01,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:30:01,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:30:01,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:30:01" (1/3) ... [2019-10-02 16:30:01,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7555d4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:01, skipping insertion in model container [2019-10-02 16:30:01,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:01" (2/3) ... [2019-10-02 16:30:01,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7555d4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:01, skipping insertion in model container [2019-10-02 16:30:01,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:01" (3/3) ... [2019-10-02 16:30:01,953 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init4_ground-1.i [2019-10-02 16:30:01,963 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:30:01,971 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:30:01,989 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:30:02,048 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:30:02,049 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:30:02,050 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:30:02,050 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:30:02,050 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:30:02,050 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:30:02,051 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:30:02,051 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:30:02,066 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-10-02 16:30:02,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-02 16:30:02,078 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:02,079 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 16:30:02,081 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:02,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:02,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1568614638, now seen corresponding path program 1 times [2019-10-02 16:30:02,092 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:02,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:02,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:02,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:02,159 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:02,230 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 16:30:02,232 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:02,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:30:02,232 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:02,236 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:02,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:02,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:02,250 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-10-02 16:30:02,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:02,268 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2019-10-02 16:30:02,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:02,269 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-10-02 16:30:02,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:02,279 INFO L225 Difference]: With dead ends: 29 [2019-10-02 16:30:02,279 INFO L226 Difference]: Without dead ends: 24 [2019-10-02 16:30:02,281 INFO L640 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 [2019-10-02 16:30:02,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-02 16:30:02,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-10-02 16:30:02,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-02 16:30:02,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-10-02 16:30:02,313 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 19 [2019-10-02 16:30:02,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:02,313 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-10-02 16:30:02,313 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:02,314 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-10-02 16:30:02,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-02 16:30:02,315 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:02,315 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 16:30:02,315 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:02,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:02,316 INFO L82 PathProgramCache]: Analyzing trace with hash -395002610, now seen corresponding path program 1 times [2019-10-02 16:30:02,316 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:02,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:02,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:02,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:02,319 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:02,369 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 16:30:02,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:02,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:30:02,369 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:02,371 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:02,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:02,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:02,372 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 3 states. [2019-10-02 16:30:02,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:02,434 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2019-10-02 16:30:02,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:02,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-02 16:30:02,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:02,436 INFO L225 Difference]: With dead ends: 28 [2019-10-02 16:30:02,436 INFO L226 Difference]: Without dead ends: 28 [2019-10-02 16:30:02,437 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 16:30:02,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-02 16:30:02,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-02 16:30:02,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-02 16:30:02,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-10-02 16:30:02,443 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 19 [2019-10-02 16:30:02,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:02,443 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-10-02 16:30:02,443 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:02,443 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-10-02 16:30:02,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-02 16:30:02,444 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:02,444 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] [2019-10-02 16:30:02,445 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:02,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:02,445 INFO L82 PathProgramCache]: Analyzing trace with hash 47445068, now seen corresponding path program 1 times [2019-10-02 16:30:02,445 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:02,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:02,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:02,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:02,448 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:02,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-02 16:30:02,541 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:30:02,542 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:30:02,543 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2019-10-02 16:30:02,545 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [12], [14], [18], [25], [27], [31], [38], [40], [44], [51], [53], [57], [65], [75], [78], [80], [86], [87], [88], [90] [2019-10-02 16:30:02,582 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:30:02,582 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:30:02,646 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:30:02,647 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 17 variables. [2019-10-02 16:30:02,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:02,650 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:30:02,686 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:30:02,686 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:30:02,688 INFO L420 sIntCurrentIteration]: We unified 22 AI predicates to 22 [2019-10-02 16:30:02,688 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:30:02,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:30:02,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-10-02 16:30:02,690 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:02,690 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:02,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:02,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:02,691 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 2 states. [2019-10-02 16:30:02,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:02,692 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:30:02,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:02,693 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2019-10-02 16:30:02,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:02,693 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:30:02,693 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:30:02,694 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:02,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:30:02,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:30:02,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:30:02,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:30:02,695 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-10-02 16:30:02,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:02,695 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:30:02,695 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:02,696 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:30:02,696 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:30:02,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:30:02 BoogieIcfgContainer [2019-10-02 16:30:02,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:30:02,703 INFO L168 Benchmark]: Toolchain (without parser) took 1421.12 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 85.3 MB in the beginning and 118.0 MB in the end (delta: -32.6 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:02,704 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 104.0 MB in the beginning and 103.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:30:02,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.41 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 85.1 MB in the beginning and 176.5 MB in the end (delta: -91.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:02,706 INFO L168 Benchmark]: Boogie Preprocessor took 36.90 ms. Allocated memory is still 198.2 MB. Free memory was 176.5 MB in the beginning and 174.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:02,707 INFO L168 Benchmark]: RCFGBuilder took 291.35 ms. Allocated memory is still 198.2 MB. Free memory was 174.2 MB in the beginning and 159.4 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:02,708 INFO L168 Benchmark]: TraceAbstraction took 755.20 ms. Allocated memory is still 198.2 MB. Free memory was 158.8 MB in the beginning and 118.0 MB in the end (delta: 40.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:02,713 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 137.9 MB. Free memory was 104.0 MB in the beginning and 103.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 333.41 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 85.1 MB in the beginning and 176.5 MB in the end (delta: -91.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.90 ms. Allocated memory is still 198.2 MB. Free memory was 176.5 MB in the beginning and 174.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 291.35 ms. Allocated memory is still 198.2 MB. Free memory was 174.2 MB in the beginning and 159.4 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 755.20 ms. Allocated memory is still 198.2 MB. Free memory was 158.8 MB in the beginning and 118.0 MB in the end (delta: 40.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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, 29 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 62 SDtfs, 0 SDslu, 16 SDs, 0 SdLazy, 12 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 0.9659090909090909 AbsIntWeakeningRatio, 0.5454545454545454 AbsIntAvgWeakeningVarsNumRemoved, 0.2727272727272727 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 1256 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 3/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...