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_init9_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:28:43,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:28:43,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:28:43,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 05:28:43,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 05:28:43,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 05:28:43,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 05:28:43,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 05:28:43,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 05:28:43,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 05:28:43,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 05:28:43,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 05:28:43,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 05:28:43,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 05:28:43,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 05:28:43,191 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 05:28:43,207 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:28:43,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:28:43,207 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:28:43,208 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:28:43,208 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:28:43,209 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:28:43,209 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:28:43,209 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:28:43,209 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:28:43,209 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:28:43,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:28:43,210 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:28:43,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:28:43,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:28:43,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:28:43,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:28:43,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:28:43,211 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:28:43,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:28:43,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:28:43,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:28:43,212 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:28:43,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:28:43,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:28:43,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:28:43,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:28:43,213 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:28:43,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:28:43,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:28:43,214 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:28:43,262 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:28:43,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:28:43,282 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:28:43,285 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:28:43,286 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:28:43,287 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init9_ground-1.i [2019-09-09 05:28:43,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a64ede4e/f449b613760d410c945015e05db1e72e/FLAG995116142 [2019-09-09 05:28:43,790 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:28:43,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init9_ground-1.i [2019-09-09 05:28:43,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a64ede4e/f449b613760d410c945015e05db1e72e/FLAG995116142 [2019-09-09 05:28:44,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a64ede4e/f449b613760d410c945015e05db1e72e [2019-09-09 05:28:44,176 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:28:44,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:28:44,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:28:44,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:28:44,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:28:44,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:28:44" (1/1) ... [2019-09-09 05:28:44,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d2eccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:44, skipping insertion in model container [2019-09-09 05:28:44,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:28:44" (1/1) ... [2019-09-09 05:28:44,194 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:28:44,211 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:28:44,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:28:44,412 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:28:44,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:28:44,539 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:28:44,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:44 WrapperNode [2019-09-09 05:28:44,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:28:44,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:28:44,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:28:44,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:28:44,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:44" (1/1) ... [2019-09-09 05:28:44,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:44" (1/1) ... [2019-09-09 05:28:44,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:44" (1/1) ... [2019-09-09 05:28:44,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:44" (1/1) ... [2019-09-09 05:28:44,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:44" (1/1) ... [2019-09-09 05:28:44,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:44" (1/1) ... [2019-09-09 05:28:44,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:44" (1/1) ... [2019-09-09 05:28:44,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:28:44,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:28:44,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:28:44,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:28:44,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:28:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:28:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:28:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-09 05:28:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:28:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:28:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-09 05:28:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:28:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-09 05:28:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-09 05:28:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-09 05:28:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-09 05:28:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:28:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:28:44,961 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:28:44,961 INFO L283 CfgBuilder]: Removed 10 assume(true) statements. [2019-09-09 05:28:44,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:28:44 BoogieIcfgContainer [2019-09-09 05:28:44,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:28:44,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:28:44,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:28:44,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:28:44,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:28:44" (1/3) ... [2019-09-09 05:28:44,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2affcc02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:28:44, skipping insertion in model container [2019-09-09 05:28:44,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:44" (2/3) ... [2019-09-09 05:28:44,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2affcc02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:28:44, skipping insertion in model container [2019-09-09 05:28:44,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:28:44" (3/3) ... [2019-09-09 05:28:44,970 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init9_ground-1.i [2019-09-09 05:28:44,980 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:28:44,989 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:28:45,005 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:28:45,031 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:28:45,032 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:28:45,032 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:28:45,032 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:28:45,032 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:28:45,032 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:28:45,033 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:28:45,033 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:28:45,048 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-09-09 05:28:45,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-09 05:28:45,057 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:28:45,058 INFO L399 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] [2019-09-09 05:28:45,060 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:28:45,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:28:45,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1872712154, now seen corresponding path program 1 times [2019-09-09 05:28:45,066 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:28:45,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:28:45,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:28:45,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:28:45,107 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:28:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:28:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:28:45,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:28:45,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-09 05:28:45,204 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:28:45,208 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:28:45,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:28:45,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:28:45,224 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2019-09-09 05:28:45,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:28:45,243 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2019-09-09 05:28:45,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:28:45,244 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2019-09-09 05:28:45,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:28:45,253 INFO L225 Difference]: With dead ends: 39 [2019-09-09 05:28:45,254 INFO L226 Difference]: Without dead ends: 34 [2019-09-09 05:28:45,256 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:28:45,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-09-09 05:28:45,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-09-09 05:28:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-09-09 05:28:45,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2019-09-09 05:28:45,294 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 29 [2019-09-09 05:28:45,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:28:45,295 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2019-09-09 05:28:45,295 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:28:45,295 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2019-09-09 05:28:45,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-09 05:28:45,296 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:28:45,296 INFO L399 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] [2019-09-09 05:28:45,297 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:28:45,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:28:45,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1932733742, now seen corresponding path program 1 times [2019-09-09 05:28:45,298 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:28:45,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:28:45,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:28:45,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:28:45,299 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:28:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:28:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:28:45,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:28:45,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:28:45,367 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:28:45,369 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:28:45,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:28:45,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:28:45,370 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand 3 states. [2019-09-09 05:28:45,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:28:45,530 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2019-09-09 05:28:45,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:28:45,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2019-09-09 05:28:45,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:28:45,533 INFO L225 Difference]: With dead ends: 43 [2019-09-09 05:28:45,534 INFO L226 Difference]: Without dead ends: 43 [2019-09-09 05:28:45,537 INFO L628 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 [2019-09-09 05:28:45,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-09 05:28:45,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-09-09 05:28:45,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-09-09 05:28:45,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2019-09-09 05:28:45,552 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2019-09-09 05:28:45,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:28:45,553 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2019-09-09 05:28:45,553 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:28:45,553 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2019-09-09 05:28:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-09-09 05:28:45,557 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:28:45,558 INFO L399 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] [2019-09-09 05:28:45,558 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:28:45,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:28:45,559 INFO L82 PathProgramCache]: Analyzing trace with hash 97911482, now seen corresponding path program 1 times [2019-09-09 05:28:45,560 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:28:45,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:28:45,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:28:45,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:28:45,563 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:28:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:28:45,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-09 05:28:45,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 05:28:45,692 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 05:28:45,693 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 39 with the following transitions: [2019-09-09 05:28:45,696 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [12], [14], [18], [25], [27], [31], [38], [40], [44], [51], [53], [57], [64], [66], [70], [77], [79], [83], [90], [92], [96], [103], [105], [109], [116], [118], [122], [130], [140], [143], [145], [151], [152], [153], [155] [2019-09-09 05:28:45,745 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 05:28:45,746 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 05:28:45,848 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 05:28:45,850 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. [2019-09-09 05:28:45,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:28:45,854 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 05:28:45,912 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-09 05:28:45,913 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 05:28:45,917 INFO L420 sIntCurrentIteration]: We unified 37 AI predicates to 37 [2019-09-09 05:28:45,918 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 05:28:45,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 05:28:45,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-09-09 05:28:45,923 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:28:45,925 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:28:45,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:28:45,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:28:45,933 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 2 states. [2019-09-09 05:28:45,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:28:45,935 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-09 05:28:45,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:28:45,935 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 38 [2019-09-09 05:28:45,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:28:45,935 INFO L225 Difference]: With dead ends: 6 [2019-09-09 05:28:45,936 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 05:28:45,936 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:28:45,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 05:28:45,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 05:28:45,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 05:28:45,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 05:28:45,937 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2019-09-09 05:28:45,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:28:45,937 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 05:28:45,937 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:28:45,937 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 05:28:45,938 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 05:28:45,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:28:45 BoogieIcfgContainer [2019-09-09 05:28:45,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:28:45,949 INFO L168 Benchmark]: Toolchain (without parser) took 1769.07 ms. Allocated memory was 134.2 MB in the beginning and 200.3 MB in the end (delta: 66.1 MB). Free memory was 89.8 MB in the beginning and 109.1 MB in the end (delta: -19.3 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2019-09-09 05:28:45,951 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 134.2 MB. Free memory was 108.6 MB in the beginning and 108.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 05:28:45,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.80 ms. Allocated memory was 134.2 MB in the beginning and 200.3 MB in the end (delta: 66.1 MB). Free memory was 89.6 MB in the beginning and 176.8 MB in the end (delta: -87.2 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-09-09 05:28:45,954 INFO L168 Benchmark]: Boogie Preprocessor took 40.37 ms. Allocated memory is still 200.3 MB. Free memory was 176.8 MB in the beginning and 175.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-09-09 05:28:45,955 INFO L168 Benchmark]: RCFGBuilder took 381.92 ms. Allocated memory is still 200.3 MB. Free memory was 175.0 MB in the beginning and 157.7 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2019-09-09 05:28:45,957 INFO L168 Benchmark]: TraceAbstraction took 980.79 ms. Allocated memory is still 200.3 MB. Free memory was 157.7 MB in the beginning and 109.1 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. [2019-09-09 05:28:45,967 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 134.2 MB. Free memory was 108.6 MB in the beginning and 108.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 360.80 ms. Allocated memory was 134.2 MB in the beginning and 200.3 MB in the end (delta: 66.1 MB). Free memory was 89.6 MB in the beginning and 176.8 MB in the end (delta: -87.2 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.37 ms. Allocated memory is still 200.3 MB. Free memory was 176.8 MB in the beginning and 175.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.92 ms. Allocated memory is still 200.3 MB. Free memory was 175.0 MB in the beginning and 157.7 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 980.79 ms. Allocated memory is still 200.3 MB. Free memory was 157.7 MB in the beginning and 109.1 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 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, 39 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 16 SDs, 0 SdLazy, 27 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=2, 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, 0.9797297297297297 AbsIntWeakeningRatio, 0.4594594594594595 AbsIntAvgWeakeningVarsNumRemoved, 0.16216216216216217 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 3141 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 8/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...