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_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loops/n.c11_true-unreach-call_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 08:01:03,062 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 08:01:03,064 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 08:01:03,076 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 08:01:03,077 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 08:01:03,078 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 08:01:03,079 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 08:01:03,082 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 08:01:03,084 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 08:01:03,085 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 08:01:03,086 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 08:01:03,086 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 08:01:03,092 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 08:01:03,093 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 08:01:03,094 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 08:01:03,095 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 08:01:03,096 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 08:01:03,104 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 08:01:03,108 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 08:01:03,113 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 08:01:03,118 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 08:01:03,119 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 08:01:03,125 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 08:01:03,125 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 08:01:03,125 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 08:01:03,127 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 08:01:03,131 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 08:01:03,132 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 08:01:03,135 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 08:01:03,136 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 08:01:03,137 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 08:01:03,137 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-19 08:01:03,142 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf [2018-09-19 08:01:03,176 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 08:01:03,176 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 08:01:03,177 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 08:01:03,179 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 08:01:03,180 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 08:01:03,180 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 08:01:03,180 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-19 08:01:03,180 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 08:01:03,181 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-19 08:01:03,181 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 08:01:03,181 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 08:01:03,181 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 08:01:03,181 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 08:01:03,182 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 08:01:03,182 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 08:01:03,184 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 08:01:03,185 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 08:01:03,185 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 08:01:03,185 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 08:01:03,185 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 08:01:03,185 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 08:01:03,187 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 08:01:03,187 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 08:01:03,187 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 08:01:03,187 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 08:01:03,188 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 08:01:03,188 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 08:01:03,188 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 08:01:03,188 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 08:01:03,188 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 08:01:03,189 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 08:01:03,189 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 08:01:03,189 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 08:01:03,189 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 08:01:03,191 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 08:01:03,237 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 08:01:03,249 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 08:01:03,253 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 08:01:03,254 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 08:01:03,255 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 08:01:03,256 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c11_true-unreach-call_false-termination.i [2018-09-19 08:01:03,623 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04eab91a5/812e725120f04b2ca9ecb34dca3fb374/FLAG76c721abe [2018-09-19 08:01:03,788 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 08:01:03,789 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c11_true-unreach-call_false-termination.i [2018-09-19 08:01:03,795 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04eab91a5/812e725120f04b2ca9ecb34dca3fb374/FLAG76c721abe [2018-09-19 08:01:03,810 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04eab91a5/812e725120f04b2ca9ecb34dca3fb374 [2018-09-19 08:01:03,820 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 08:01:03,823 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 08:01:03,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 08:01:03,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 08:01:03,831 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 08:01:03,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 08:01:03" (1/1) ... [2018-09-19 08:01:03,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304117ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:03, skipping insertion in model container [2018-09-19 08:01:03,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 08:01:03" (1/1) ... [2018-09-19 08:01:03,847 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 08:01:04,032 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 08:01:04,048 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 08:01:04,053 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 08:01:04,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:04 WrapperNode [2018-09-19 08:01:04,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 08:01:04,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 08:01:04,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 08:01:04,068 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 08:01:04,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:04" (1/1) ... [2018-09-19 08:01:04,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:04" (1/1) ... [2018-09-19 08:01:04,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 08:01:04,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 08:01:04,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 08:01:04,091 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 08:01:04,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:04" (1/1) ... [2018-09-19 08:01:04,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:04" (1/1) ... [2018-09-19 08:01:04,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:04" (1/1) ... [2018-09-19 08:01:04,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:04" (1/1) ... [2018-09-19 08:01:04,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:04" (1/1) ... [2018-09-19 08:01:04,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:04" (1/1) ... [2018-09-19 08:01:04,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:04" (1/1) ... [2018-09-19 08:01:04,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 08:01:04,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 08:01:04,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 08:01:04,113 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 08:01:04,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:04" (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 [2018-09-19 08:01:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 08:01:04,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 08:01:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 08:01:04,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 08:01:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 08:01:04,183 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 08:01:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 08:01:04,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 08:01:04,482 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 08:01:04,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 08:01:04 BoogieIcfgContainer [2018-09-19 08:01:04,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 08:01:04,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 08:01:04,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 08:01:04,488 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 08:01:04,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 08:01:03" (1/3) ... [2018-09-19 08:01:04,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c2efcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 08:01:04, skipping insertion in model container [2018-09-19 08:01:04,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:04" (2/3) ... [2018-09-19 08:01:04,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c2efcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 08:01:04, skipping insertion in model container [2018-09-19 08:01:04,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 08:01:04" (3/3) ... [2018-09-19 08:01:04,492 INFO L112 eAbstractionObserver]: Analyzing ICFG n.c11_true-unreach-call_false-termination.i [2018-09-19 08:01:04,503 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 08:01:04,511 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 08:01:04,586 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 08:01:04,588 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 08:01:04,588 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 08:01:04,588 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 08:01:04,588 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 08:01:04,589 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 08:01:04,589 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 08:01:04,589 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 08:01:04,589 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 08:01:04,617 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-09-19 08:01:04,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-19 08:01:04,625 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:04,626 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:04,627 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:04,634 INFO L82 PathProgramCache]: Analyzing trace with hash -2008095039, now seen corresponding path program 1 times [2018-09-19 08:01:04,637 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:04,638 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-09-19 08:01:04,640 INFO L202 CegarAbsIntRunner]: [0], [4], [23], [28], [31], [33], [39], [40], [41], [43] [2018-09-19 08:01:04,697 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:04,698 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:04,743 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:04,744 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 3 variables. [2018-09-19 08:01:04,756 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:04,812 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-19 08:01:04,812 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:04,824 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:04,825 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:04,826 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 08:01:04,826 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:04,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 08:01:04,837 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 08:01:04,838 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 08:01:04,840 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2018-09-19 08:01:04,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:04,919 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2018-09-19 08:01:04,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 08:01:04,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-09-19 08:01:04,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:04,929 INFO L225 Difference]: With dead ends: 45 [2018-09-19 08:01:04,929 INFO L226 Difference]: Without dead ends: 19 [2018-09-19 08:01:04,933 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 08:01:04,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-19 08:01:04,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-09-19 08:01:04,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-19 08:01:04,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-09-19 08:01:04,970 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2018-09-19 08:01:04,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:04,970 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-09-19 08:01:04,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 08:01:04,971 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-09-19 08:01:04,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-19 08:01:04,972 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:04,972 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:04,973 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:04,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1715940768, now seen corresponding path program 1 times [2018-09-19 08:01:04,973 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:04,974 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-19 08:01:04,974 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [28], [31], [33], [39], [40], [41], [43] [2018-09-19 08:01:04,976 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:04,976 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:05,002 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 08:01:05,023 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 08:01:05,023 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-09-19 08:01:05,064 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 08:01:05,079 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 08:01:05,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 08:01:05 BoogieIcfgContainer [2018-09-19 08:01:05,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 08:01:05,081 INFO L168 Benchmark]: Toolchain (without parser) took 1260.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -726.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:05,083 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-09-19 08:01:05,084 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.13 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. [2018-09-19 08:01:05,085 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.73 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. [2018-09-19 08:01:05,085 INFO L168 Benchmark]: Boogie Preprocessor took 21.61 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. [2018-09-19 08:01:05,086 INFO L168 Benchmark]: RCFGBuilder took 370.75 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -771.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:05,087 INFO L168 Benchmark]: TraceAbstraction took 596.13 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: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:05,092 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 243.13 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 22.73 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 21.61 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 370.75 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -771.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 596.13 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: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: 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: [L10] int a[5]; [L11] unsigned int len=0; [L12] int i; [L13] COND FALSE !(__VERIFIER_nondet_bool()) [L19] CALL __VERIFIER_assert(len>=0 && len<5) [L3] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. UNKNOWN Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 6 SDslu, 18 SDs, 0 SdLazy, 4 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 2 AbstIntIterations, 1 AbstIntStrong, 0.6666666666666666 AbsIntWeakeningRatio, 0.5555555555555556 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 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/n.c11_true-unreach-call_false-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_08-01-05-105.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/n.c11_true-unreach-call_false-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_08-01-05-105.csv Received shutdown request...