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_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 01:29:18,003 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 01:29:18,006 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 01:29:18,029 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 01:29:18,030 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 01:29:18,031 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 01:29:18,035 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 01:29:18,038 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 01:29:18,040 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 01:29:18,042 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 01:29:18,043 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 01:29:18,043 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 01:29:18,044 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 01:29:18,046 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 01:29:18,047 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 01:29:18,048 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 01:29:18,049 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 01:29:18,050 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 01:29:18,052 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 01:29:18,054 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 01:29:18,055 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 01:29:18,056 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 01:29:18,059 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 01:29:18,059 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 01:29:18,059 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 01:29:18,060 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 01:29:18,061 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 01:29:18,062 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 01:29:18,063 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 01:29:18,064 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 01:29:18,064 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 01:29:18,065 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-19 01:29:18,068 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf [2018-09-19 01:29:18,084 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 01:29:18,084 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 01:29:18,085 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 01:29:18,085 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 01:29:18,086 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 01:29:18,086 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 01:29:18,086 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 01:29:18,086 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-19 01:29:18,086 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 01:29:18,087 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 01:29:18,087 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 01:29:18,087 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 01:29:18,088 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 01:29:18,088 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 01:29:18,088 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 01:29:18,088 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 01:29:18,089 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 01:29:18,089 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 01:29:18,089 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 01:29:18,089 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 01:29:18,089 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 01:29:18,090 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 01:29:18,090 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 01:29:18,090 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 01:29:18,090 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 01:29:18,091 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 01:29:18,091 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 01:29:18,091 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 01:29:18,092 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 01:29:18,092 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 01:29:18,092 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 01:29:18,092 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 01:29:18,093 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 01:29:18,093 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 01:29:18,163 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 01:29:18,175 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 01:29:18,179 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 01:29:18,181 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 01:29:18,181 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 01:29:18,182 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i [2018-09-19 01:29:18,548 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab0673349/9bc27bca575847ba80df62aa8203a5f7/FLAGf232e6ed5 [2018-09-19 01:29:18,746 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 01:29:18,747 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i [2018-09-19 01:29:18,757 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab0673349/9bc27bca575847ba80df62aa8203a5f7/FLAGf232e6ed5 [2018-09-19 01:29:18,785 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab0673349/9bc27bca575847ba80df62aa8203a5f7 [2018-09-19 01:29:18,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 01:29:18,806 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 01:29:18,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 01:29:18,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 01:29:18,818 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 01:29:18,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 01:29:18" (1/1) ... [2018-09-19 01:29:18,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@96b6f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:18, skipping insertion in model container [2018-09-19 01:29:18,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 01:29:18" (1/1) ... [2018-09-19 01:29:18,836 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 01:29:19,036 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 01:29:19,054 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 01:29:19,061 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 01:29:19,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:19 WrapperNode [2018-09-19 01:29:19,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 01:29:19,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 01:29:19,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 01:29:19,079 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 01:29:19,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:19" (1/1) ... [2018-09-19 01:29:19,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:19" (1/1) ... [2018-09-19 01:29:19,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 01:29:19,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 01:29:19,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 01:29:19,103 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 01:29:19,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:19" (1/1) ... [2018-09-19 01:29:19,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:19" (1/1) ... [2018-09-19 01:29:19,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:19" (1/1) ... [2018-09-19 01:29:19,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:19" (1/1) ... [2018-09-19 01:29:19,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:19" (1/1) ... [2018-09-19 01:29:19,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:19" (1/1) ... [2018-09-19 01:29:19,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:19" (1/1) ... [2018-09-19 01:29:19,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 01:29:19,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 01:29:19,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 01:29:19,127 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 01:29:19,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:19" (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 01:29:19,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 01:29:19,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 01:29:19,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 01:29:19,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 01:29:19,205 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 01:29:19,206 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 01:29:19,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 01:29:19,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 01:29:19,758 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 01:29:19,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 01:29:19 BoogieIcfgContainer [2018-09-19 01:29:19,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 01:29:19,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 01:29:19,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 01:29:19,763 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 01:29:19,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 01:29:18" (1/3) ... [2018-09-19 01:29:19,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a1566a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 01:29:19, skipping insertion in model container [2018-09-19 01:29:19,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:19" (2/3) ... [2018-09-19 01:29:19,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a1566a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 01:29:19, skipping insertion in model container [2018-09-19 01:29:19,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 01:29:19" (3/3) ... [2018-09-19 01:29:19,767 INFO L112 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i [2018-09-19 01:29:19,777 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 01:29:19,785 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 01:29:19,836 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 01:29:19,837 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 01:29:19,837 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 01:29:19,837 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 01:29:19,837 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 01:29:19,837 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 01:29:19,838 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 01:29:19,838 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 01:29:19,838 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 01:29:19,857 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-09-19 01:29:19,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-19 01:29:19,864 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:19,865 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:29:19,866 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:19,872 INFO L82 PathProgramCache]: Analyzing trace with hash 802506358, now seen corresponding path program 1 times [2018-09-19 01:29:19,874 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:19,876 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-09-19 01:29:19,878 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [19], [25], [31], [39], [44], [48], [53], [63], [66], [68], [74], [75], [76], [78] [2018-09-19 01:29:19,936 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:19,936 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:20,055 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 01:29:20,057 INFO L272 AbstractInterpreter]: Visited 18 different actions 18 times. Never merged. Never widened. Never found a fixpoint. Largest state had 9 variables. [2018-09-19 01:29:20,068 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 01:29:20,235 INFO L232 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 48% of their original sizes. [2018-09-19 01:29:20,236 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 01:29:21,235 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 01:29:21,237 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 01:29:21,237 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-19 01:29:21,238 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 01:29:21,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-19 01:29:21,249 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-19 01:29:21,250 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-09-19 01:29:21,253 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 14 states. [2018-09-19 01:29:22,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 01:29:22,037 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2018-09-19 01:29:22,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-19 01:29:22,040 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 19 [2018-09-19 01:29:22,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 01:29:22,049 INFO L225 Difference]: With dead ends: 70 [2018-09-19 01:29:22,050 INFO L226 Difference]: Without dead ends: 34 [2018-09-19 01:29:22,054 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2018-09-19 01:29:22,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-09-19 01:29:22,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2018-09-19 01:29:22,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-09-19 01:29:22,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2018-09-19 01:29:22,103 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 19 [2018-09-19 01:29:22,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 01:29:22,103 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2018-09-19 01:29:22,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-19 01:29:22,104 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2018-09-19 01:29:22,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-19 01:29:22,105 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:22,105 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:29:22,106 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:22,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1083684374, now seen corresponding path program 1 times [2018-09-19 01:29:22,107 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:22,107 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-19 01:29:22,107 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [19], [25], [31], [39], [44], [48], [53], [63], [66], [68], [71], [73], [74], [75], [76], [78], [79], [80] [2018-09-19 01:29:22,110 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:22,110 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:22,140 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 01:29:22,141 INFO L272 AbstractInterpreter]: Visited 23 different actions 27 times. Never merged. Never widened. Never found a fixpoint. Largest state had 9 variables. [2018-09-19 01:29:22,159 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 01:29:22,180 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 01:29:22,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 01:29:22 BoogieIcfgContainer [2018-09-19 01:29:22,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 01:29:22,181 INFO L168 Benchmark]: Toolchain (without parser) took 3380.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 730.3 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -652.7 MB). Peak memory consumption was 77.6 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:22,184 INFO L168 Benchmark]: CDTParser took 0.21 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 01:29:22,185 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.37 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 01:29:22,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.34 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 01:29:22,186 INFO L168 Benchmark]: Boogie Preprocessor took 24.24 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 01:29:22,187 INFO L168 Benchmark]: RCFGBuilder took 631.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 730.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -764.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:22,188 INFO L168 Benchmark]: TraceAbstraction took 2421.15 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: 101.5 MB). Peak memory consumption was 101.5 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:22,193 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 271.37 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 23.34 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 24.24 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 631.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 730.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -764.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2421.15 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: 101.5 MB). Peak memory consumption was 101.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: 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: [L12] int p; [L13] int i; [L14] int leader_len; [L15] int bufsize; [L16] int bufsize_0; [L17] int ielen; [L18] leader_len = __VERIFIER_nondet_int() [L19] bufsize = __VERIFIER_nondet_int() [L20] ielen = __VERIFIER_nondet_int() [L21] COND FALSE !(!(leader_len < 1000000)) [L22] COND FALSE !(!(bufsize < 1000000)) [L23] COND FALSE !(!(ielen < 1000000)) [L24] COND TRUE leader_len >0 [L25] COND TRUE bufsize >0 [L26] COND TRUE ielen >0 [L27] COND FALSE !(bufsize < leader_len) [L29] p = 0 [L30] bufsize_0 = bufsize [L31] bufsize -= leader_len [L32] p += leader_len [L33] COND FALSE !(bufsize < 2*ielen) [L35] i = 0 [L35] COND TRUE i < ielen && bufsize > 2 [L36] CALL __VERIFIER_assert(0<=p) [L4] COND FALSE, RET !(!(cond)) [L36] __VERIFIER_assert(0<=p) [L37] CALL __VERIFIER_assert(p+1