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-new/gauss_sum_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 09:23:29,436 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 09:23:29,438 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 09:23:29,452 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 09:23:29,452 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 09:23:29,453 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 09:23:29,455 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 09:23:29,457 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 09:23:29,458 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 09:23:29,459 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 09:23:29,460 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 09:23:29,460 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 09:23:29,461 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 09:23:29,462 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 09:23:29,463 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 09:23:29,464 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 09:23:29,470 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 09:23:29,472 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 09:23:29,474 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 09:23:29,475 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 09:23:29,477 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 09:23:29,479 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 09:23:29,481 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 09:23:29,481 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 09:23:29,481 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 09:23:29,482 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 09:23:29,483 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 09:23:29,484 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 09:23:29,485 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 09:23:29,486 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 09:23:29,487 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 09:23:29,487 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-15 09:23:29,490 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 [2018-09-15 09:23:29,506 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 09:23:29,506 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 09:23:29,508 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 09:23:29,508 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 09:23:29,508 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 09:23:29,509 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 09:23:29,509 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 09:23:29,509 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-15 09:23:29,509 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 09:23:29,509 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 09:23:29,510 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 09:23:29,511 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 09:23:29,511 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 09:23:29,511 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 09:23:29,511 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 09:23:29,512 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 09:23:29,512 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 09:23:29,512 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 09:23:29,512 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 09:23:29,512 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 09:23:29,515 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 09:23:29,515 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 09:23:29,515 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 09:23:29,515 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 09:23:29,515 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 09:23:29,516 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 09:23:29,516 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 09:23:29,516 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 09:23:29,516 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 09:23:29,516 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 09:23:29,517 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 09:23:29,517 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 09:23:29,517 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 09:23:29,571 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 09:23:29,585 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 09:23:29,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 09:23:29,589 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 09:23:29,590 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 09:23:29,590 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call_true-termination.i [2018-09-15 09:23:29,847 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d311cfc/e03dcf67cdc44d0a809e47e8256762e1/FLAGf3023f0ea [2018-09-15 09:23:30,058 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 09:23:30,059 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call_true-termination.i [2018-09-15 09:23:30,065 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d311cfc/e03dcf67cdc44d0a809e47e8256762e1/FLAGf3023f0ea [2018-09-15 09:23:30,080 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d311cfc/e03dcf67cdc44d0a809e47e8256762e1 [2018-09-15 09:23:30,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 09:23:30,094 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 09:23:30,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 09:23:30,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 09:23:30,103 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 09:23:30,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 09:23:30" (1/1) ... [2018-09-15 09:23:30,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2889c7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:30, skipping insertion in model container [2018-09-15 09:23:30,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 09:23:30" (1/1) ... [2018-09-15 09:23:30,121 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 09:23:30,320 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 09:23:30,340 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 09:23:30,349 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 09:23:30,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:30 WrapperNode [2018-09-15 09:23:30,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 09:23:30,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 09:23:30,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 09:23:30,369 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 09:23:30,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:30" (1/1) ... [2018-09-15 09:23:30,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:30" (1/1) ... [2018-09-15 09:23:30,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 09:23:30,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 09:23:30,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 09:23:30,394 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 09:23:30,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:30" (1/1) ... [2018-09-15 09:23:30,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:30" (1/1) ... [2018-09-15 09:23:30,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:30" (1/1) ... [2018-09-15 09:23:30,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:30" (1/1) ... [2018-09-15 09:23:30,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:30" (1/1) ... [2018-09-15 09:23:30,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:30" (1/1) ... [2018-09-15 09:23:30,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:30" (1/1) ... [2018-09-15 09:23:30,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 09:23:30,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 09:23:30,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 09:23:30,419 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 09:23:30,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:30" (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 09:23:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 09:23:30,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 09:23:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 09:23:30,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 09:23:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 09:23:30,492 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 09:23:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 09:23:30,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 09:23:30,808 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 09:23:30,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 09:23:30 BoogieIcfgContainer [2018-09-15 09:23:30,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 09:23:30,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 09:23:30,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 09:23:30,813 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 09:23:30,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 09:23:30" (1/3) ... [2018-09-15 09:23:30,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df77af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 09:23:30, skipping insertion in model container [2018-09-15 09:23:30,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:30" (2/3) ... [2018-09-15 09:23:30,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df77af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 09:23:30, skipping insertion in model container [2018-09-15 09:23:30,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 09:23:30" (3/3) ... [2018-09-15 09:23:30,817 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum_true-unreach-call_true-termination.i [2018-09-15 09:23:30,832 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 09:23:30,843 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 09:23:30,915 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 09:23:30,916 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 09:23:30,916 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 09:23:30,916 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 09:23:30,917 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 09:23:30,917 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 09:23:30,917 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 09:23:30,917 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 09:23:30,918 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 09:23:30,939 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-09-15 09:23:30,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-15 09:23:30,946 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 09:23:30,947 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 09:23:30,948 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 09:23:30,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1152414567, now seen corresponding path program 1 times [2018-09-15 09:23:30,958 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 09:23:30,960 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-15 09:23:30,962 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [21], [26], [29], [31], [37], [38], [39], [41] [2018-09-15 09:23:31,034 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-15 09:23:31,034 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 09:23:31,116 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 09:23:31,117 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-09-15 09:23:31,131 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 09:23:31,189 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 33.33% of their original sizes. [2018-09-15 09:23:31,190 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 09:23:31,235 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 09:23:31,236 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 09:23:31,237 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-15 09:23:31,237 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 09:23:31,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-15 09:23:31,249 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-15 09:23:31,249 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 09:23:31,252 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2018-09-15 09:23:31,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 09:23:31,454 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2018-09-15 09:23:31,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-15 09:23:31,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-09-15 09:23:31,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 09:23:31,466 INFO L225 Difference]: With dead ends: 39 [2018-09-15 09:23:31,466 INFO L226 Difference]: Without dead ends: 17 [2018-09-15 09:23:31,470 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 09:23:31,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-09-15 09:23:31,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2018-09-15 09:23:31,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-15 09:23:31,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-09-15 09:23:31,509 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-09-15 09:23:31,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 09:23:31,510 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-09-15 09:23:31,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-15 09:23:31,510 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-09-15 09:23:31,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-15 09:23:31,511 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 09:23:31,511 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 09:23:31,512 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 09:23:31,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1083883255, now seen corresponding path program 1 times [2018-09-15 09:23:31,513 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 09:23:31,513 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-09-15 09:23:31,513 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [15], [26], [29], [31], [37], [38], [39], [41] [2018-09-15 09:23:31,515 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-15 09:23:31,515 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 09:23:31,524 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 09:23:31,525 INFO L272 AbstractInterpreter]: Visited 8 different actions 8 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-09-15 09:23:31,558 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 09:23:31,611 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-15 09:23:31,611 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 09:23:31,655 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 09:23:31,655 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 09:23:31,655 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-15 09:23:31,656 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 09:23:31,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-15 09:23:31,657 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-15 09:23:31,657 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 09:23:31,659 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2018-09-15 09:23:31,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 09:23:31,737 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-15 09:23:31,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-15 09:23:31,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-09-15 09:23:31,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 09:23:31,740 INFO L225 Difference]: With dead ends: 21 [2018-09-15 09:23:31,740 INFO L226 Difference]: Without dead ends: 16 [2018-09-15 09:23:31,743 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 09:23:31,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-15 09:23:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-09-15 09:23:31,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-09-15 09:23:31,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-09-15 09:23:31,751 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2018-09-15 09:23:31,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 09:23:31,752 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-09-15 09:23:31,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-15 09:23:31,752 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-09-15 09:23:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-15 09:23:31,753 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 09:23:31,753 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 09:23:31,753 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 09:23:31,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1128913667, now seen corresponding path program 1 times [2018-09-15 09:23:31,754 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 09:23:31,754 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-09-15 09:23:31,754 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [15], [17], [19], [26], [29], [31], [37], [38], [39], [41] [2018-09-15 09:23:31,756 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-15 09:23:31,756 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 09:23:31,994 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 09:23:31,995 INFO L272 AbstractInterpreter]: Visited 14 different actions 112 times. Merged at 4 different actions 51 times. Widened at 1 different actions 9 times. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-09-15 09:23:32,008 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 09:23:32,029 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 09:23:32,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 09:23:32 BoogieIcfgContainer [2018-09-15 09:23:32,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 09:23:32,030 INFO L168 Benchmark]: Toolchain (without parser) took 1938.83 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.5 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -705.7 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2018-09-15 09:23:32,033 INFO L168 Benchmark]: CDTParser took 0.21 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 09:23:32,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.49 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 09:23:32,035 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.86 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 09:23:32,035 INFO L168 Benchmark]: Boogie Preprocessor took 24.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 09:23:32,036 INFO L168 Benchmark]: RCFGBuilder took 390.85 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -762.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-09-15 09:23:32,037 INFO L168 Benchmark]: TraceAbstraction took 1219.54 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. [2018-09-15 09:23:32,046 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 272.49 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 24.86 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 24.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 390.85 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -762.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1219.54 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 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: [L11] int n, sum, i; [L12] n = __VERIFIER_nondet_int() [L13] COND FALSE !(!(1 <= n && n <= 1000)) [L14] sum = 0 [L15] i = 1 [L15] COND TRUE i <= n [L16] sum = sum + i [L15] i++ [L15] i++ [L15] COND FALSE !(i <= n) [L18] CALL __VERIFIER_assert(2*sum == n*(n+1)) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. UNKNOWN Result, 1.1s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 SDtfs, 18 SDslu, 39 SDs, 0 SdLazy, 16 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 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, 0.4s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9523809523809523 AbsIntWeakeningRatio, 0.6666666666666666 AbsIntAvgWeakeningVarsNumRemoved, 0.5238095238095238 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 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/gauss_sum_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_09-23-32-063.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/gauss_sum_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_09-23-32-063.csv Received shutdown request...