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/n.c40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:36:44,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:36:44,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:36:44,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-03 20:36:44,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:36:44,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:36:44,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:36:44,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:36:44,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:36:44,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:36:44,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:36:44,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:36:44,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:36:44,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:36:44,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:36:44,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:36:44,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:36:44,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 20:36:44,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 20:36:44,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 20:36:44,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 20:36:44,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 20:36:44,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 20:36:44,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 20:36:44,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 20:36:44,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:36:44,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:36:44,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:36:44,715 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 [2019-09-03 20:36:44,744 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:36:44,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:36:44,747 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 20:36:44,747 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 20:36:44,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 20:36:44,748 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 20:36:44,748 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 20:36:44,750 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 20:36:44,750 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 20:36:44,750 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 20:36:44,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:36:44,752 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:36:44,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:36:44,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:36:44,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:36:44,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:36:44,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:36:44,753 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:36:44,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:36:44,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:36:44,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:36:44,754 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 20:36:44,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:36:44,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:36:44,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:36:44,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:36:44,756 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 20:36:44,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:36:44,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:36:44,756 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 20:36:44,803 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:36:44,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:36:44,819 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:36:44,821 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:36:44,821 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:36:44,822 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c40.c [2019-09-03 20:36:44,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4230aa699/d2597e42762b419ab4171a324ebfb503/FLAGec1311f1d [2019-09-03 20:36:45,311 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:36:45,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c40.c [2019-09-03 20:36:45,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4230aa699/d2597e42762b419ab4171a324ebfb503/FLAGec1311f1d [2019-09-03 20:36:45,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4230aa699/d2597e42762b419ab4171a324ebfb503 [2019-09-03 20:36:45,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:36:45,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:36:45,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:36:45,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:36:45,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:36:45,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:36:45" (1/1) ... [2019-09-03 20:36:45,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635b5632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:45, skipping insertion in model container [2019-09-03 20:36:45,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:36:45" (1/1) ... [2019-09-03 20:36:45,747 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:36:45,763 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:36:45,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:36:45,950 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:36:45,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:36:46,112 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:36:46,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:46 WrapperNode [2019-09-03 20:36:46,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:36:46,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:36:46,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:36:46,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:36:46,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:46" (1/1) ... [2019-09-03 20:36:46,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:46" (1/1) ... [2019-09-03 20:36:46,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:46" (1/1) ... [2019-09-03 20:36:46,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:46" (1/1) ... [2019-09-03 20:36:46,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:46" (1/1) ... [2019-09-03 20:36:46,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:46" (1/1) ... [2019-09-03 20:36:46,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:46" (1/1) ... [2019-09-03 20:36:46,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:36:46,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:36:46,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:36:46,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:36:46,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:46" (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 [2019-09-03 20:36:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:36:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:36:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:36:46,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:36:46,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 20:36:46,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:36:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-03 20:36:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-03 20:36:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:36:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-03 20:36:46,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-03 20:36:46,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:36:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-03 20:36:46,730 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:36:46,731 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 20:36:46,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:36:46 BoogieIcfgContainer [2019-09-03 20:36:46,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:36:46,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:36:46,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:36:46,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:36:46,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:36:45" (1/3) ... [2019-09-03 20:36:46,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9b4b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:36:46, skipping insertion in model container [2019-09-03 20:36:46,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:46" (2/3) ... [2019-09-03 20:36:46,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9b4b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:36:46, skipping insertion in model container [2019-09-03 20:36:46,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:36:46" (3/3) ... [2019-09-03 20:36:46,755 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c40.c [2019-09-03 20:36:46,776 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:36:46,793 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:36:46,815 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:36:46,843 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:36:46,843 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 20:36:46,844 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:36:46,844 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:36:46,844 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:36:46,844 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:36:46,844 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:36:46,844 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:36:46,856 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-09-03 20:36:46,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-03 20:36:46,865 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:36:46,866 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:36:46,868 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:36:46,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:36:46,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1526440521, now seen corresponding path program 1 times [2019-09-03 20:36:46,877 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:36:46,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:46,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:36:46,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:46,920 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:36:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:36:47,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:36:47,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:36:47,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 20:36:47,181 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:36:47,187 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:36:47,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:36:47,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:36:47,201 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-09-03 20:36:47,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:36:47,216 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-09-03 20:36:47,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:36:47,218 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-03 20:36:47,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:36:47,227 INFO L225 Difference]: With dead ends: 18 [2019-09-03 20:36:47,228 INFO L226 Difference]: Without dead ends: 13 [2019-09-03 20:36:47,230 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 [2019-09-03 20:36:47,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-03 20:36:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-03 20:36:47,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-03 20:36:47,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-09-03 20:36:47,268 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-09-03 20:36:47,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:36:47,268 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-09-03 20:36:47,268 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:36:47,269 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-09-03 20:36:47,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-03 20:36:47,269 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:36:47,270 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:36:47,270 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:36:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:36:47,271 INFO L82 PathProgramCache]: Analyzing trace with hash -281053369, now seen corresponding path program 1 times [2019-09-03 20:36:47,271 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:36:47,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:47,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:36:47,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:47,273 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:36:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:36:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:36:47,393 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:36:47,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-03 20:36:47,393 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:36:47,395 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-03 20:36:47,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-03 20:36:47,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-03 20:36:47,396 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2019-09-03 20:36:47,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:36:47,456 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-09-03 20:36:47,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-03 20:36:47,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-09-03 20:36:47,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:36:47,457 INFO L225 Difference]: With dead ends: 17 [2019-09-03 20:36:47,457 INFO L226 Difference]: Without dead ends: 15 [2019-09-03 20:36:47,458 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 [2019-09-03 20:36:47,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-03 20:36:47,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-03 20:36:47,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-03 20:36:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-09-03 20:36:47,462 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2019-09-03 20:36:47,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:36:47,463 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-09-03 20:36:47,463 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-03 20:36:47,463 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-09-03 20:36:47,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-03 20:36:47,464 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:36:47,464 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:36:47,464 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:36:47,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:36:47,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1999502604, now seen corresponding path program 1 times [2019-09-03 20:36:47,465 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:36:47,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:47,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:36:47,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:47,466 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:36:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:36:47,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:36:47,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:36:47,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 20:36:47,741 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:36:47,742 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 20:36:47,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 20:36:47,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:36:47,743 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2019-09-03 20:36:47,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:36:47,791 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2019-09-03 20:36:47,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-03 20:36:47,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-09-03 20:36:47,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:36:47,792 INFO L225 Difference]: With dead ends: 8 [2019-09-03 20:36:47,793 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 20:36:47,793 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-03 20:36:47,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 20:36:47,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 20:36:47,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 20:36:47,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 20:36:47,795 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-09-03 20:36:47,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:36:47,795 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 20:36:47,795 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 20:36:47,795 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 20:36:47,796 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 20:36:47,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:36:47 BoogieIcfgContainer [2019-09-03 20:36:47,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:36:47,804 INFO L168 Benchmark]: Toolchain (without parser) took 2073.11 ms. Allocated memory was 131.1 MB in the beginning and 199.8 MB in the end (delta: 68.7 MB). Free memory was 85.4 MB in the beginning and 92.1 MB in the end (delta: -6.7 MB). Peak memory consumption was 62.0 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:47,805 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 131.1 MB. Free memory was 104.0 MB in the beginning and 103.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:36:47,806 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.90 ms. Allocated memory was 131.1 MB in the beginning and 199.8 MB in the end (delta: 68.7 MB). Free memory was 85.2 MB in the beginning and 176.6 MB in the end (delta: -91.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:47,807 INFO L168 Benchmark]: Boogie Preprocessor took 59.26 ms. Allocated memory is still 199.8 MB. Free memory was 176.6 MB in the beginning and 173.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:47,808 INFO L168 Benchmark]: RCFGBuilder took 559.61 ms. Allocated memory is still 199.8 MB. Free memory was 173.0 MB in the beginning and 151.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:47,809 INFO L168 Benchmark]: TraceAbstraction took 1067.60 ms. Allocated memory is still 199.8 MB. Free memory was 151.2 MB in the beginning and 92.1 MB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:47,813 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 131.1 MB. Free memory was 104.0 MB in the beginning and 103.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 381.90 ms. Allocated memory was 131.1 MB in the beginning and 199.8 MB in the end (delta: 68.7 MB). Free memory was 85.2 MB in the beginning and 176.6 MB in the end (delta: -91.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.26 ms. Allocated memory is still 199.8 MB. Free memory was 176.6 MB in the beginning and 173.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 559.61 ms. Allocated memory is still 199.8 MB. Free memory was 173.0 MB in the beginning and 151.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1067.60 ms. Allocated memory is still 199.8 MB. Free memory was 151.2 MB in the beginning and 92.1 MB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: 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 3 procedures, 18 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 9 SDslu, 7 SDs, 0 SdLazy, 12 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 1310 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...