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/ldv-regression/test22-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:24:10,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:24:10,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:24:10,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-03 02:24:10,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:24:10,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:24:10,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:24:10,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:24:10,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:24:10,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:24:10,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:24:10,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:24:10,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:24:10,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:24:10,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:24:10,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:24:10,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-03 02:24:10,822 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 [2019-10-03 02:24:10,836 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:24:10,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:24:10,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:24:10,837 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:24:10,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:24:10,838 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:24:10,838 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:24:10,839 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:24:10,839 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:24:10,839 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:24:10,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:24:10,840 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:24:10,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:24:10,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:24:10,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:24:10,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:24:10,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:24:10,841 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:24:10,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:24:10,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:24:10,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:24:10,842 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:24:10,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:24:10,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:24:10,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:24:10,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:24:10,843 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:24:10,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:24:10,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:24:10,844 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:24:10,881 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:24:10,894 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:24:10,898 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:24:10,899 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:24:10,899 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:24:10,900 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-1.c [2019-10-03 02:24:10,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/857b050cd/3e5e9792cdea43d6b1d0ed3735aa4455/FLAGfea6c2bb1 [2019-10-03 02:24:11,465 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:24:11,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test22-1.c [2019-10-03 02:24:11,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/857b050cd/3e5e9792cdea43d6b1d0ed3735aa4455/FLAGfea6c2bb1 [2019-10-03 02:24:11,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/857b050cd/3e5e9792cdea43d6b1d0ed3735aa4455 [2019-10-03 02:24:11,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:24:11,857 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:24:11,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:24:11,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:24:11,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:24:11,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:24:11" (1/1) ... [2019-10-03 02:24:11,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d763b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:11, skipping insertion in model container [2019-10-03 02:24:11,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:24:11" (1/1) ... [2019-10-03 02:24:11,873 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:24:11,887 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:24:12,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:24:12,159 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:24:12,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:24:12,316 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:24:12,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:12 WrapperNode [2019-10-03 02:24:12,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:24:12,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:24:12,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:24:12,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:24:12,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:12" (1/1) ... [2019-10-03 02:24:12,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:12" (1/1) ... [2019-10-03 02:24:12,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:12" (1/1) ... [2019-10-03 02:24:12,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:12" (1/1) ... [2019-10-03 02:24:12,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:12" (1/1) ... [2019-10-03 02:24:12,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:12" (1/1) ... [2019-10-03 02:24:12,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:12" (1/1) ... [2019-10-03 02:24:12,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:24:12,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:24:12,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:24:12,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:24:12,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:12" (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 [2019-10-03 02:24:12,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:24:12,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:24:12,441 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-10-03 02:24:12,441 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2019-10-03 02:24:12,441 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-10-03 02:24:12,441 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:24:12,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:24:12,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-03 02:24:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-03 02:24:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-03 02:24:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:24:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2019-10-03 02:24:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-03 02:24:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:24:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:24:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:24:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:24:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-03 02:24:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:24:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:24:12,794 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:24:12,794 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-03 02:24:12,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:24:12 BoogieIcfgContainer [2019-10-03 02:24:12,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:24:12,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:24:12,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:24:12,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:24:12,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:24:11" (1/3) ... [2019-10-03 02:24:12,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbc7edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:24:12, skipping insertion in model container [2019-10-03 02:24:12,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:12" (2/3) ... [2019-10-03 02:24:12,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbc7edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:24:12, skipping insertion in model container [2019-10-03 02:24:12,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:24:12" (3/3) ... [2019-10-03 02:24:12,807 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-1.c [2019-10-03 02:24:12,815 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:24:12,822 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:24:12,837 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:24:12,858 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:24:12,859 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:24:12,859 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:24:12,859 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:24:12,859 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:24:12,859 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:24:12,859 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:24:12,859 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:24:12,879 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-10-03 02:24:12,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-03 02:24:12,888 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:24:12,888 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:24:12,891 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:24:12,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:24:12,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1345538594, now seen corresponding path program 1 times [2019-10-03 02:24:12,897 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:24:12,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:12,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:24:12,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:12,949 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:24:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:24:13,110 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-03 02:24:13,117 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:24:13,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-03 02:24:13,119 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:24:13,126 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:24:13,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:24:13,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:24:13,141 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2019-10-03 02:24:13,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:24:13,162 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2019-10-03 02:24:13,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:24:13,163 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2019-10-03 02:24:13,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:24:13,173 INFO L225 Difference]: With dead ends: 36 [2019-10-03 02:24:13,173 INFO L226 Difference]: Without dead ends: 31 [2019-10-03 02:24:13,175 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 [2019-10-03 02:24:13,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-03 02:24:13,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-10-03 02:24:13,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-03 02:24:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-10-03 02:24:13,217 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2019-10-03 02:24:13,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:24:13,218 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-10-03 02:24:13,218 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:24:13,219 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-10-03 02:24:13,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-03 02:24:13,221 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:24:13,221 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:24:13,221 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:24:13,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:24:13,222 INFO L82 PathProgramCache]: Analyzing trace with hash -213153012, now seen corresponding path program 1 times [2019-10-03 02:24:13,222 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:24:13,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:13,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:24:13,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:13,225 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:24:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:24:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-03 02:24:13,561 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:24:13,561 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:24:13,562 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 39 with the following transitions: [2019-10-03 02:24:13,564 INFO L207 CegarAbsIntRunner]: [0], [1], [4], [6], [8], [11], [17], [22], [25], [32], [35], [42], [45], [46], [47], [48], [51], [55], [56], [60], [61], [62], [63], [64], [65], [66], [67], [68], [69], [70], [71], [72] [2019-10-03 02:24:13,613 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:24:13,613 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:24:13,715 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 02:24:13,717 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 13 root evaluator evaluations with a maximum evaluation depth of 0. Performed 13 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 20 variables. [2019-10-03 02:24:13,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:24:13,722 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 02:24:13,781 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-10-03 02:24:13,781 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 02:24:13,789 INFO L420 sIntCurrentIteration]: We unified 37 AI predicates to 37 [2019-10-03 02:24:13,789 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 02:24:13,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:24:13,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 10 [2019-10-03 02:24:13,791 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:24:13,794 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:24:13,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:24:13,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:24:13,795 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 2 states. [2019-10-03 02:24:13,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:24:13,796 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-10-03 02:24:13,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:24:13,797 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 38 [2019-10-03 02:24:13,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:24:13,798 INFO L225 Difference]: With dead ends: 2 [2019-10-03 02:24:13,798 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:24:13,800 INFO L640 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 [2019-10-03 02:24:13,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:24:13,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:24:13,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:24:13,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:24:13,802 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2019-10-03 02:24:13,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:24:13,802 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:24:13,802 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:24:13,802 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:24:13,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:24:13,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:24:13 BoogieIcfgContainer [2019-10-03 02:24:13,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:24:13,812 INFO L168 Benchmark]: Toolchain (without parser) took 1953.61 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 86.8 MB in the beginning and 100.0 MB in the end (delta: -13.2 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:13,814 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 132.6 MB. Free memory was 105.5 MB in the beginning and 105.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:24:13,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 460.48 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 86.6 MB in the beginning and 176.6 MB in the end (delta: -90.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:13,819 INFO L168 Benchmark]: Boogie Preprocessor took 65.06 ms. Allocated memory is still 199.8 MB. Free memory was 176.6 MB in the beginning and 174.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:13,820 INFO L168 Benchmark]: RCFGBuilder took 411.90 ms. Allocated memory is still 199.8 MB. Free memory was 174.4 MB in the beginning and 156.0 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:13,822 INFO L168 Benchmark]: TraceAbstraction took 1012.13 ms. Allocated memory is still 199.8 MB. Free memory was 155.4 MB in the beginning and 100.0 MB in the end (delta: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:13,835 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 132.6 MB. Free memory was 105.5 MB in the beginning and 105.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 460.48 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 86.6 MB in the beginning and 176.6 MB in the end (delta: -90.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.06 ms. Allocated memory is still 199.8 MB. Free memory was 176.6 MB in the beginning and 174.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 411.90 ms. Allocated memory is still 199.8 MB. Free memory was 174.4 MB in the beginning and 156.0 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1012.13 ms. Allocated memory is still 199.8 MB. Free memory was 155.4 MB in the beginning and 100.0 MB in the end (delta: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: 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 6 procedures, 36 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 2 OverallIterations, 3 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 1.0 AbsIntWeakeningRatio, 1.3783783783783783 AbsIntAvgWeakeningVarsNumRemoved, 0.0 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, 0.3s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 6254 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 18/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...