java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf -i ../../../trunk/examples/svcomp/loops/string_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 21:03:34,154 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 21:03:34,157 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 21:03:34,171 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 21:03:34,171 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 21:03:34,172 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 21:03:34,174 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 21:03:34,176 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 21:03:34,178 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 21:03:34,179 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 21:03:34,180 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 21:03:34,180 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 21:03:34,181 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 21:03:34,182 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 21:03:34,183 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 21:03:34,184 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 21:03:34,185 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 21:03:34,187 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 21:03:34,189 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 21:03:34,190 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 21:03:34,192 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 21:03:34,193 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 21:03:34,196 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-15 21:03:34,203 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 21:03:34,204 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 21:03:34,205 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 21:03:34,205 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 21:03:34,206 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf [2018-09-15 21:03:34,222 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 21:03:34,222 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 21:03:34,223 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 21:03:34,223 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 21:03:34,224 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 21:03:34,224 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 21:03:34,224 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 21:03:34,224 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 21:03:34,225 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-15 21:03:34,225 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 21:03:34,225 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 21:03:34,226 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 21:03:34,226 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 21:03:34,226 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 21:03:34,226 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 21:03:34,227 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 21:03:34,227 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 21:03:34,227 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 21:03:34,227 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 21:03:34,228 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 21:03:34,228 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 21:03:34,228 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 21:03:34,228 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 21:03:34,229 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 21:03:34,229 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 21:03:34,229 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 21:03:34,229 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 21:03:34,229 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 21:03:34,230 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 21:03:34,230 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 21:03:34,230 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 21:03:34,230 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 21:03:34,231 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 21:03:34,298 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 21:03:34,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 21:03:34,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 21:03:34,324 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 21:03:34,324 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 21:03:34,325 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/string_true-unreach-call_true-termination.i [2018-09-15 21:03:34,701 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dac37ebdf/98e4c2cd02ab40b2ae46f02d5ce655ef/FLAGe4d1ce1a2 [2018-09-15 21:03:34,860 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 21:03:34,861 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/string_true-unreach-call_true-termination.i [2018-09-15 21:03:34,869 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dac37ebdf/98e4c2cd02ab40b2ae46f02d5ce655ef/FLAGe4d1ce1a2 [2018-09-15 21:03:34,889 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dac37ebdf/98e4c2cd02ab40b2ae46f02d5ce655ef [2018-09-15 21:03:34,904 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 21:03:34,907 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 21:03:34,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 21:03:34,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 21:03:34,922 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 21:03:34,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 09:03:34" (1/1) ... [2018-09-15 21:03:34,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77eb0580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:34, skipping insertion in model container [2018-09-15 21:03:34,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 09:03:34" (1/1) ... [2018-09-15 21:03:34,941 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 21:03:35,160 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 21:03:35,181 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 21:03:35,201 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 21:03:35,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35 WrapperNode [2018-09-15 21:03:35,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 21:03:35,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 21:03:35,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 21:03:35,220 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 21:03:35,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 21:03:35,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 21:03:35,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 21:03:35,246 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 21:03:35,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 21:03:35,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 21:03:35,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 21:03:35,283 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 21:03:35,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (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 [2018-09-15 21:03:35,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 21:03:35,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 21:03:35,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 21:03:35,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 21:03:35,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 21:03:35,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 21:03:35,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 21:03:35,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 21:03:35,945 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 21:03:35,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 09:03:35 BoogieIcfgContainer [2018-09-15 21:03:35,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 21:03:35,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 21:03:35,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 21:03:35,951 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 21:03:35,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 09:03:34" (1/3) ... [2018-09-15 21:03:35,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed3d996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 09:03:35, skipping insertion in model container [2018-09-15 21:03:35,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (2/3) ... [2018-09-15 21:03:35,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed3d996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 09:03:35, skipping insertion in model container [2018-09-15 21:03:35,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 09:03:35" (3/3) ... [2018-09-15 21:03:35,955 INFO L112 eAbstractionObserver]: Analyzing ICFG string_true-unreach-call_true-termination.i [2018-09-15 21:03:35,965 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 21:03:35,974 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 21:03:36,026 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 21:03:36,027 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 21:03:36,027 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 21:03:36,027 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 21:03:36,028 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 21:03:36,028 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 21:03:36,028 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 21:03:36,028 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 21:03:36,028 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 21:03:36,047 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-09-15 21:03:36,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-15 21:03:36,055 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 21:03:36,056 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 21:03:36,057 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 21:03:36,063 INFO L82 PathProgramCache]: Analyzing trace with hash 511662962, now seen corresponding path program 1 times [2018-09-15 21:03:36,065 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 21:03:36,066 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-09-15 21:03:36,069 INFO L202 CegarAbsIntRunner]: [0], [4], [17], [22], [35], [40], [52], [54], [66], [71], [89], [91], [95], [98], [100], [106], [107], [108], [110] [2018-09-15 21:03:36,114 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 21:03:36,114 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 21:03:36,182 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 21:03:36,184 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-09-15 21:03:36,205 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 21:03:36,262 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 100% of their original sizes. [2018-09-15 21:03:36,263 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 21:03:36,266 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 21:03:36,267 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 21:03:36,267 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-15 21:03:36,267 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 21:03:36,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-15 21:03:36,277 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-15 21:03:36,278 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-15 21:03:36,280 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2018-09-15 21:03:36,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 21:03:36,303 INFO L93 Difference]: Finished difference Result 62 states and 89 transitions. [2018-09-15 21:03:36,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-15 21:03:36,304 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-09-15 21:03:36,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 21:03:36,311 INFO L225 Difference]: With dead ends: 62 [2018-09-15 21:03:36,312 INFO L226 Difference]: Without dead ends: 28 [2018-09-15 21:03:36,315 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-15 21:03:36,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-15 21:03:36,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-09-15 21:03:36,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-09-15 21:03:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2018-09-15 21:03:36,352 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 19 [2018-09-15 21:03:36,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 21:03:36,353 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2018-09-15 21:03:36,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-15 21:03:36,353 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2018-09-15 21:03:36,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-15 21:03:36,355 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 21:03:36,355 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 21:03:36,355 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 21:03:36,356 INFO L82 PathProgramCache]: Analyzing trace with hash 696326523, now seen corresponding path program 1 times [2018-09-15 21:03:36,356 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 21:03:36,356 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-15 21:03:36,357 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [22], [26], [29], [40], [44], [48], [54], [58], [62], [71], [75], [79], [91], [95], [98], [100], [106], [107], [108], [110] [2018-09-15 21:03:36,359 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 21:03:36,359 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 21:03:36,372 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 21:03:36,372 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-09-15 21:03:36,403 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 21:03:36,423 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 50% of their original sizes. [2018-09-15 21:03:36,424 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 21:03:36,432 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 21:03:36,432 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 21:03:36,433 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 21:03:36,433 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 21:03:36,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 21:03:36,434 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 21:03:36,435 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 21:03:36,435 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 3 states. [2018-09-15 21:03:36,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 21:03:36,539 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2018-09-15 21:03:36,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 21:03:36,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-09-15 21:03:36,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 21:03:36,542 INFO L225 Difference]: With dead ends: 59 [2018-09-15 21:03:36,543 INFO L226 Difference]: Without dead ends: 39 [2018-09-15 21:03:36,545 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 21:03:36,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-15 21:03:36,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2018-09-15 21:03:36,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-09-15 21:03:36,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2018-09-15 21:03:36,553 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 24 [2018-09-15 21:03:36,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 21:03:36,553 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2018-09-15 21:03:36,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 21:03:36,554 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2018-09-15 21:03:36,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-15 21:03:36,555 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 21:03:36,555 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 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] [2018-09-15 21:03:36,555 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 21:03:36,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1830123429, now seen corresponding path program 1 times [2018-09-15 21:03:36,556 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 21:03:36,556 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-09-15 21:03:36,556 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [13], [15], [22], [26], [29], [31], [33], [40], [44], [48], [54], [58], [62], [71], [75], [79], [91], [95], [98], [100], [106], [107], [108], [110] [2018-09-15 21:03:36,559 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 21:03:36,559 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 21:03:36,653 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 21:03:36,653 INFO L272 AbstractInterpreter]: Visited 28 different actions 68 times. Merged at 6 different actions 30 times. Widened at 2 different actions 2 times. Found 2 fixpoints after 2 different actions. Largest state had 11 variables. [2018-09-15 21:03:36,666 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 21:03:36,683 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 21:03:36,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 09:03:36 BoogieIcfgContainer [2018-09-15 21:03:36,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 21:03:36,684 INFO L168 Benchmark]: Toolchain (without parser) took 1779.58 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 706.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -700.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 7.1 GB. [2018-09-15 21:03:36,686 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-09-15 21:03:36,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.64 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-15 21:03:36,688 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.78 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. [2018-09-15 21:03:36,688 INFO L168 Benchmark]: Boogie Preprocessor took 36.82 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. [2018-09-15 21:03:36,689 INFO L168 Benchmark]: RCFGBuilder took 664.01 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 706.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -754.0 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-09-15 21:03:36,690 INFO L168 Benchmark]: TraceAbstraction took 736.41 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2018-09-15 21:03:36,694 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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. * CACSL2BoogieTranslator took 309.64 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 25.78 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 36.82 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 664.01 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 706.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -754.0 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 736.41 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L16] char string_A[5], string_B[5]; [L17] int i, j, nc_A, nc_B, found=0; [L17] int i, j, nc_A, nc_B, found=0; [L19] i=0 [L19] COND TRUE i<5 [L20] string_A[i]=__VERIFIER_nondet_char() [L19] i++ [L19] i++ [L19] COND FALSE !(i<5) [L21] COND FALSE !(!(string_A[5 -1]=='\0')) [L23] i=0 [L23] COND TRUE i<5 [L24] string_B[i]=__VERIFIER_nondet_char() [L23] i++ [L23] i++ [L23] COND FALSE !(i<5) [L25] COND FALSE !(!(string_B[5 -1]=='\0')) [L27] nc_A = 0 [L28] COND FALSE !(string_A[nc_A]!='\0') [L31] nc_B = 0 [L32] COND FALSE !(string_B[nc_B]!='\0') [L35] COND FALSE !(!(nc_B >= nc_A)) [L38] EXPR j=0 [L38] i=j=0 [L39] COND FALSE !((inc_B-1) [L55] CALL __VERIFIER_assert(found == 0 || found == 1) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 1 error locations. UNKNOWN Result, 0.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 7 SDslu, 20 SDs, 0 SdLazy, 18 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.7317073170731707 AbsIntAvgWeakeningVarsNumRemoved, 0.07317073170731707 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/string_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_21-03-36-707.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/string_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_21-03-36-707.csv Received shutdown request...