java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b6335f6 [2018-10-23 09:35:36,091 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 09:35:36,093 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 09:35:36,111 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 09:35:36,111 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 09:35:36,112 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 09:35:36,114 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 09:35:36,116 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 09:35:36,118 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 09:35:36,125 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 09:35:36,126 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 09:35:36,126 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 09:35:36,127 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 09:35:36,131 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 09:35:36,133 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 09:35:36,133 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 09:35:36,135 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 09:35:36,138 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 09:35:36,139 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 09:35:36,143 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 09:35:36,146 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 09:35:36,147 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 09:35:36,149 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 09:35:36,149 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 09:35:36,149 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 09:35:36,152 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 09:35:36,153 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 09:35:36,155 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 09:35:36,156 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 09:35:36,158 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 09:35:36,158 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 09:35:36,159 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 09:35:36,159 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 09:35:36,159 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 09:35:36,163 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 09:35:36,163 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 09:35:36,164 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 09:35:36,193 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 09:35:36,194 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 09:35:36,194 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 09:35:36,195 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 09:35:36,195 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 09:35:36,195 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 09:35:36,196 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 09:35:36,196 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 09:35:36,196 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 09:35:36,196 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 09:35:36,196 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 09:35:36,197 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 09:35:36,197 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 09:35:36,197 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 09:35:36,197 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 09:35:36,197 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 09:35:36,197 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 09:35:36,198 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 09:35:36,198 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 09:35:36,198 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 09:35:36,198 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 09:35:36,198 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 09:35:36,199 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 09:35:36,199 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 09:35:36,199 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 09:35:36,199 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 09:35:36,199 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 09:35:36,200 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 09:35:36,265 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 09:35:36,277 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 09:35:36,281 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 09:35:36,282 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 09:35:36,283 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 09:35:36,283 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop_true-unreach-call_true-termination.i [2018-10-23 09:35:36,342 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bb246661b/24dd88cfe99142acadec81b983353075/FLAG9d48969a4 [2018-10-23 09:35:36,754 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 09:35:36,754 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop_true-unreach-call_true-termination.i [2018-10-23 09:35:36,761 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bb246661b/24dd88cfe99142acadec81b983353075/FLAG9d48969a4 [2018-10-23 09:35:36,774 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bb246661b/24dd88cfe99142acadec81b983353075 [2018-10-23 09:35:36,784 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 09:35:36,785 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 09:35:36,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 09:35:36,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 09:35:36,790 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 09:35:36,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:35:36" (1/1) ... [2018-10-23 09:35:36,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465bf4a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:36, skipping insertion in model container [2018-10-23 09:35:36,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:35:36" (1/1) ... [2018-10-23 09:35:36,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 09:35:36,825 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 09:35:37,011 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 09:35:37,016 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 09:35:37,035 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 09:35:37,051 INFO L193 MainTranslator]: Completed translation [2018-10-23 09:35:37,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:37 WrapperNode [2018-10-23 09:35:37,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 09:35:37,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 09:35:37,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 09:35:37,053 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 09:35:37,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:37" (1/1) ... [2018-10-23 09:35:37,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:37" (1/1) ... [2018-10-23 09:35:37,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 09:35:37,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 09:35:37,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 09:35:37,089 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 09:35:37,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:37" (1/1) ... [2018-10-23 09:35:37,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:37" (1/1) ... [2018-10-23 09:35:37,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:37" (1/1) ... [2018-10-23 09:35:37,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:37" (1/1) ... [2018-10-23 09:35:37,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:37" (1/1) ... [2018-10-23 09:35:37,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:37" (1/1) ... [2018-10-23 09:35:37,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:37" (1/1) ... [2018-10-23 09:35:37,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 09:35:37,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 09:35:37,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 09:35:37,109 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 09:35:37,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 09:35:37,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 09:35:37,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 09:35:37,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-23 09:35:37,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-23 09:35:37,510 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 09:35:37,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:35:37 BoogieIcfgContainer [2018-10-23 09:35:37,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 09:35:37,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 09:35:37,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 09:35:37,518 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 09:35:37,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:35:36" (1/3) ... [2018-10-23 09:35:37,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2758b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:35:37, skipping insertion in model container [2018-10-23 09:35:37,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:37" (2/3) ... [2018-10-23 09:35:37,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2758b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:35:37, skipping insertion in model container [2018-10-23 09:35:37,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:35:37" (3/3) ... [2018-10-23 09:35:37,522 INFO L112 eAbstractionObserver]: Analyzing ICFG NetBSD_loop_true-unreach-call_true-termination.i [2018-10-23 09:35:37,534 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 09:35:37,544 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 09:35:37,565 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 09:35:37,623 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 09:35:37,625 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 09:35:37,626 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 09:35:37,626 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 09:35:37,626 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 09:35:37,626 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 09:35:37,626 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 09:35:37,627 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 09:35:37,627 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 09:35:37,664 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-10-23 09:35:37,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-23 09:35:37,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:35:37,678 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:35:37,683 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:35:37,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:35:37,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1205123709, now seen corresponding path program 1 times [2018-10-23 09:35:37,693 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:35:37,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:35:37,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:37,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:35:37,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:35:37,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:35:37,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:35:37,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 09:35:37,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 09:35:38,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 09:35:38,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 09:35:38,013 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2018-10-23 09:35:38,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:35:38,295 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-10-23 09:35:38,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 09:35:38,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-10-23 09:35:38,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:35:38,307 INFO L225 Difference]: With dead ends: 42 [2018-10-23 09:35:38,308 INFO L226 Difference]: Without dead ends: 19 [2018-10-23 09:35:38,312 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-23 09:35:38,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-23 09:35:38,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-23 09:35:38,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-23 09:35:38,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-23 09:35:38,351 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2018-10-23 09:35:38,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:35:38,351 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-23 09:35:38,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 09:35:38,352 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-23 09:35:38,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-23 09:35:38,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:35:38,353 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:35:38,354 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:35:38,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:35:38,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1544418204, now seen corresponding path program 1 times [2018-10-23 09:35:38,355 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:35:38,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:35:38,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:38,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:35:38,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:35:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:35:38,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 09:35:38,526 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 09:35:38,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:35:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:35:38,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:35:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:35:39,086 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 09:35:39,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 12 [2018-10-23 09:35:39,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 09:35:39,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 09:35:39,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-10-23 09:35:39,089 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 12 states. [2018-10-23 09:35:39,300 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 6 [2018-10-23 09:35:39,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:35:39,491 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-10-23 09:35:39,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 09:35:39,492 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2018-10-23 09:35:39,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:35:39,493 INFO L225 Difference]: With dead ends: 30 [2018-10-23 09:35:39,493 INFO L226 Difference]: Without dead ends: 0 [2018-10-23 09:35:39,495 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2018-10-23 09:35:39,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-23 09:35:39,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-23 09:35:39,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-23 09:35:39,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-23 09:35:39,496 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-10-23 09:35:39,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:35:39,497 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-23 09:35:39,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-23 09:35:39,497 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-23 09:35:39,497 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-23 09:35:39,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-23 09:35:39,937 WARN L179 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-10-23 09:35:39,972 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-23 09:35:39,972 INFO L421 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (< 0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= 0 ULTIMATE.start_main_~glob2_p_off~0) (<= ULTIMATE.start_main_~glob2_p_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0)) [2018-10-23 09:35:39,972 INFO L421 ceAbstractionStarter]: At program point L27-1(line 27) the Hoare annotation is: (and (< 0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= 0 ULTIMATE.start_main_~glob2_p_off~0) (<= ULTIMATE.start_main_~glob2_p_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0)) [2018-10-23 09:35:39,973 INFO L425 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-10-23 09:35:39,973 INFO L425 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-10-23 09:35:39,973 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-23 09:35:39,973 INFO L428 ceAbstractionStarter]: At program point L30(lines 11 31) the Hoare annotation is: true [2018-10-23 09:35:39,973 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-23 09:35:39,973 INFO L428 ceAbstractionStarter]: At program point L30-1(lines 10 31) the Hoare annotation is: true [2018-10-23 09:35:39,974 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-23 09:35:39,974 INFO L425 ceAbstractionStarter]: For program point L28(lines 24 29) no Hoare annotation was computed. [2018-10-23 09:35:39,974 INFO L425 ceAbstractionStarter]: For program point L24-1(lines 24 29) no Hoare annotation was computed. [2018-10-23 09:35:39,974 INFO L421 ceAbstractionStarter]: At program point L24-3(lines 24 29) the Hoare annotation is: (and (< 0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= 0 ULTIMATE.start_main_~glob2_p_off~0) (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0)) [2018-10-23 09:35:39,975 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-23 09:35:39,975 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-23 09:35:39,975 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-23 09:35:39,975 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-23 09:35:39,975 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-23 09:35:39,975 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-23 09:35:39,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:35:39 BoogieIcfgContainer [2018-10-23 09:35:39,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 09:35:39,991 INFO L168 Benchmark]: Toolchain (without parser) took 3207.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 772.8 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -728.5 MB). Peak memory consumption was 44.3 MB. Max. memory is 7.1 GB. [2018-10-23 09:35:39,993 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 09:35:39,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2018-10-23 09:35:39,995 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 09:35:39,995 INFO L168 Benchmark]: Boogie Preprocessor took 20.50 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 09:35:39,996 INFO L168 Benchmark]: RCFGBuilder took 402.22 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 772.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -835.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-10-23 09:35:39,997 INFO L168 Benchmark]: TraceAbstraction took 2477.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 94.1 MB). Peak memory consumption was 94.1 MB. Max. memory is 7.1 GB. [2018-10-23 09:35:40,003 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 266.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 35.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.50 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 402.22 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 772.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -835.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2477.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 94.1 MB). Peak memory consumption was 94.1 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 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (0 < MAXPATHLEN && 0 <= glob2_p_off) && glob2_pathlim_off <= MAXPATHLEN - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. SAFE Result, 2.3s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 32 SDslu, 80 SDs, 0 SdLazy, 82 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 11 PreInvPairs, 22 NumberOfFragments, 39 HoareAnnotationTreeSize, 11 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 28 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 1463 SizeOfPredicates, 5 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...