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/loops/while_infinite_loop_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:25:17,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:25:17,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:25:17,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:25:17,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:25:17,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:25:17,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:25:17,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:25:17,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:25:17,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:25:17,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:25:17,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:25:17,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:25:17,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:25:17,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:25:17,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:25:17,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:25:17,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:25:17,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:25:17,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:25:17,219 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 [2019-09-20 13:25:17,246 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:25:17,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:25:17,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:25:17,248 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:25:17,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:25:17,249 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:25:17,249 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:25:17,249 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:25:17,250 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:25:17,250 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:25:17,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:25:17,253 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:25:17,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:25:17,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:25:17,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:25:17,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:25:17,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:25:17,254 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:25:17,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:25:17,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:25:17,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:25:17,255 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:25:17,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:25:17,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:25:17,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:25:17,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:25:17,257 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:25:17,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:25:17,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:25:17,257 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:25:17,316 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:25:17,335 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:25:17,339 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:25:17,341 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:25:17,342 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:25:17,343 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_1.c [2019-09-20 13:25:17,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/288166450/13b9803a186846e6bc7a87003683f1cb/FLAG91e2e2410 [2019-09-20 13:25:17,872 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:25:17,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_1.c [2019-09-20 13:25:17,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/288166450/13b9803a186846e6bc7a87003683f1cb/FLAG91e2e2410 [2019-09-20 13:25:18,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/288166450/13b9803a186846e6bc7a87003683f1cb [2019-09-20 13:25:18,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:25:18,255 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:25:18,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:18,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:25:18,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:25:18,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:18" (1/1) ... [2019-09-20 13:25:18,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e8210b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:18, skipping insertion in model container [2019-09-20 13:25:18,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:18" (1/1) ... [2019-09-20 13:25:18,273 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:25:18,292 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:25:18,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:18,461 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:25:18,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:18,484 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:25:18,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:18 WrapperNode [2019-09-20 13:25:18,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:18,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:25:18,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:25:18,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:25:18,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:18" (1/1) ... [2019-09-20 13:25:18,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:18" (1/1) ... [2019-09-20 13:25:18,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:18" (1/1) ... [2019-09-20 13:25:18,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:18" (1/1) ... [2019-09-20 13:25:18,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:18" (1/1) ... [2019-09-20 13:25:18,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:18" (1/1) ... [2019-09-20 13:25:18,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:18" (1/1) ... [2019-09-20 13:25:18,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:25:18,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:25:18,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:25:18,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:25:18,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:18" (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 [2019-09-20 13:25:18,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:25:18,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:25:18,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:25:18,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:25:18,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:25:18,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:25:18,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:25:18,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:25:18,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:25:18,790 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:25:18,791 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 13:25:18,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:18 BoogieIcfgContainer [2019-09-20 13:25:18,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:25:18,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:25:18,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:25:18,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:25:18,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:25:18" (1/3) ... [2019-09-20 13:25:18,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efa9157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:18, skipping insertion in model container [2019-09-20 13:25:18,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:18" (2/3) ... [2019-09-20 13:25:18,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efa9157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:18, skipping insertion in model container [2019-09-20 13:25:18,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:18" (3/3) ... [2019-09-20 13:25:18,801 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_1.c [2019-09-20 13:25:18,811 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:25:18,818 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:25:18,832 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:25:18,860 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:25:18,861 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:25:18,861 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:25:18,861 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:25:18,861 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:25:18,861 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:25:18,862 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:25:18,862 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:25:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-09-20 13:25:18,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-20 13:25:18,888 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:18,889 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:18,891 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:18,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:18,896 INFO L82 PathProgramCache]: Analyzing trace with hash -10313984, now seen corresponding path program 1 times [2019-09-20 13:25:18,898 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:18,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:18,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:18,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:18,943 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:18,994 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:18,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:25:18,995 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:18,998 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:25:19,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:25:19,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:25:19,012 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-09-20 13:25:19,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:19,026 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-09-20 13:25:19,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:25:19,027 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-20 13:25:19,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:19,037 INFO L225 Difference]: With dead ends: 13 [2019-09-20 13:25:19,037 INFO L226 Difference]: Without dead ends: 13 [2019-09-20 13:25:19,039 INFO L636 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 [2019-09-20 13:25:19,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-20 13:25:19,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-20 13:25:19,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-20 13:25:19,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-09-20 13:25:19,079 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2019-09-20 13:25:19,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:19,079 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-09-20 13:25:19,079 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:25:19,080 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-09-20 13:25:19,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-20 13:25:19,080 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:19,081 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:19,081 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:19,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:19,082 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2019-09-20 13:25:19,082 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:19,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:19,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:19,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:19,084 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:19,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:19,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:25:19,322 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:19,324 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:25:19,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:25:19,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:25:19,325 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-09-20 13:25:19,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:19,413 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-09-20 13:25:19,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:25:19,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-20 13:25:19,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:19,415 INFO L225 Difference]: With dead ends: 11 [2019-09-20 13:25:19,415 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:25:19,416 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:25:19,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:25:19,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:25:19,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:25:19,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:25:19,418 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-09-20 13:25:19,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:19,418 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:25:19,418 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:25:19,418 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:25:19,419 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:25:19,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:25:19 BoogieIcfgContainer [2019-09-20 13:25:19,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:25:19,427 INFO L168 Benchmark]: Toolchain (without parser) took 1171.68 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 87.3 MB in the beginning and 139.4 MB in the end (delta: -52.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:19,429 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 104.9 MB in the beginning and 104.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:25:19,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.27 ms. Allocated memory is still 138.9 MB. Free memory was 87.0 MB in the beginning and 77.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:19,431 INFO L168 Benchmark]: Boogie Preprocessor took 118.07 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 77.9 MB in the beginning and 176.6 MB in the end (delta: -98.7 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:19,432 INFO L168 Benchmark]: RCFGBuilder took 188.77 ms. Allocated memory is still 198.7 MB. Free memory was 176.6 MB in the beginning and 166.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:19,433 INFO L168 Benchmark]: TraceAbstraction took 630.38 ms. Allocated memory is still 198.7 MB. Free memory was 166.0 MB in the beginning and 139.4 MB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:19,437 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 104.9 MB in the beginning and 104.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 229.27 ms. Allocated memory is still 138.9 MB. Free memory was 87.0 MB in the beginning and 77.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.07 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 77.9 MB in the beginning and 176.6 MB in the end (delta: -98.7 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 188.77 ms. Allocated memory is still 198.7 MB. Free memory was 176.6 MB in the beginning and 166.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 630.38 ms. Allocated memory is still 198.7 MB. Free memory was 166.0 MB in the beginning and 139.4 MB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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, 18 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 5 SDslu, 19 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...