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_CON-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 06:51:04,492 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 06:51:04,494 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 06:51:04,507 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 06:51:04,508 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 06:51:04,509 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 06:51:04,510 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 06:51:04,512 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 06:51:04,514 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 06:51:04,515 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 06:51:04,516 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 06:51:04,516 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 06:51:04,518 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 06:51:04,520 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 06:51:04,521 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 06:51:04,522 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 06:51:04,525 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 06:51:04,533 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 06:51:04,535 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 06:51:04,539 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 06:51:04,544 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 06:51:04,545 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 06:51:04,553 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 06:51:04,553 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 06:51:04,553 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 06:51:04,554 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 06:51:04,555 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 06:51:04,556 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 06:51:04,557 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 06:51:04,558 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 06:51:04,558 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 06:51:04,559 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-19 06:51:04,561 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf [2018-09-19 06:51:04,577 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 06:51:04,577 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 06:51:04,578 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 06:51:04,578 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 06:51:04,578 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 06:51:04,578 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 06:51:04,579 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 06:51:04,579 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-19 06:51:04,579 INFO L133 SettingsManager]: * Abstract domain=CongruenceDomain [2018-09-19 06:51:04,579 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 06:51:04,580 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 06:51:04,580 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 06:51:04,580 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 06:51:04,581 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 06:51:04,581 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 06:51:04,581 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 06:51:04,582 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 06:51:04,582 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 06:51:04,582 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 06:51:04,582 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 06:51:04,582 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 06:51:04,583 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 06:51:04,583 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 06:51:04,583 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 06:51:04,583 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 06:51:04,583 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 06:51:04,585 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 06:51:04,585 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 06:51:04,586 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 06:51:04,586 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 06:51:04,586 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 06:51:04,586 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 06:51:04,586 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 06:51:04,587 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 06:51:04,587 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 06:51:04,656 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 06:51:04,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 06:51:04,679 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 06:51:04,680 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 06:51:04,681 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 06:51:04,682 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call4.i [2018-09-19 06:51:05,053 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08b8a2dc6/f2d6cbe4ae354311895d1c821d7e7a8b/FLAG0361a6ee0 [2018-09-19 06:51:05,216 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 06:51:05,217 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call4.i [2018-09-19 06:51:05,223 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08b8a2dc6/f2d6cbe4ae354311895d1c821d7e7a8b/FLAG0361a6ee0 [2018-09-19 06:51:05,239 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08b8a2dc6/f2d6cbe4ae354311895d1c821d7e7a8b [2018-09-19 06:51:05,249 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 06:51:05,252 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 06:51:05,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 06:51:05,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 06:51:05,261 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 06:51:05,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 06:51:05" (1/1) ... [2018-09-19 06:51:05,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408707bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:51:05, skipping insertion in model container [2018-09-19 06:51:05,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 06:51:05" (1/1) ... [2018-09-19 06:51:05,278 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 06:51:05,528 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 06:51:05,551 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 06:51:05,555 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 06:51:05,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:51:05 WrapperNode [2018-09-19 06:51:05,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 06:51:05,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 06:51:05,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 06:51:05,575 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 06:51:05,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:51:05" (1/1) ... [2018-09-19 06:51:05,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:51:05" (1/1) ... [2018-09-19 06:51:05,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 06:51:05,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 06:51:05,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 06:51:05,598 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 06:51:05,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:51:05" (1/1) ... [2018-09-19 06:51:05,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:51:05" (1/1) ... [2018-09-19 06:51:05,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:51:05" (1/1) ... [2018-09-19 06:51:05,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:51:05" (1/1) ... [2018-09-19 06:51:05,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:51:05" (1/1) ... [2018-09-19 06:51:05,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:51:05" (1/1) ... [2018-09-19 06:51:05,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:51:05" (1/1) ... [2018-09-19 06:51:05,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 06:51:05,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 06:51:05,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 06:51:05,631 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 06:51:05,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:51:05" (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 06:51:05,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 06:51:05,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 06:51:05,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 06:51:05,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 06:51:05,709 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 06:51:05,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 06:51:05,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 06:51:05,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 06:51:05,956 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 06:51:05,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 06:51:05 BoogieIcfgContainer [2018-09-19 06:51:05,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 06:51:05,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 06:51:05,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 06:51:05,961 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 06:51:05,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 06:51:05" (1/3) ... [2018-09-19 06:51:05,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428798c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 06:51:05, skipping insertion in model container [2018-09-19 06:51:05,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:51:05" (2/3) ... [2018-09-19 06:51:05,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428798c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 06:51:05, skipping insertion in model container [2018-09-19 06:51:05,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 06:51:05" (3/3) ... [2018-09-19 06:51:05,965 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call4.i [2018-09-19 06:51:05,975 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 06:51:05,983 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 06:51:06,034 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 06:51:06,035 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 06:51:06,035 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 06:51:06,035 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 06:51:06,035 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 06:51:06,036 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 06:51:06,036 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 06:51:06,036 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 06:51:06,036 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 06:51:06,055 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-09-19 06:51:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-19 06:51:06,062 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 06:51:06,063 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 06:51:06,064 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 06:51:06,070 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-09-19 06:51:06,073 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 06:51:06,074 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-09-19 06:51:06,076 INFO L202 CegarAbsIntRunner]: [0], [4], [16], [20], [23], [25], [31], [32], [33], [35] [2018-09-19 06:51:06,110 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-19 06:51:06,110 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 06:51:06,160 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 06:51:06,161 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 1 variables. [2018-09-19 06:51:06,173 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 06:51:06,212 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-19 06:51:06,212 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 06:51:06,222 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 06:51:06,223 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 06:51:06,224 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 06:51:06,224 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 06:51:06,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 06:51:06,236 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 06:51:06,237 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 06:51:06,240 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-09-19 06:51:06,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 06:51:06,328 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-09-19 06:51:06,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 06:51:06,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-09-19 06:51:06,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 06:51:06,341 INFO L225 Difference]: With dead ends: 31 [2018-09-19 06:51:06,342 INFO L226 Difference]: Without dead ends: 14 [2018-09-19 06:51:06,346 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 06:51:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-19 06:51:06,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-19 06:51:06,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-19 06:51:06,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-09-19 06:51:06,450 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2018-09-19 06:51:06,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 06:51:06,452 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-09-19 06:51:06,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 06:51:06,452 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-09-19 06:51:06,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-19 06:51:06,453 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 06:51:06,453 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 06:51:06,453 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 06:51:06,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1625028318, now seen corresponding path program 1 times [2018-09-19 06:51:06,454 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 06:51:06,454 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-09-19 06:51:06,455 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [20], [23], [25], [31], [32], [33], [35] [2018-09-19 06:51:06,456 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-19 06:51:06,456 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 06:51:06,518 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 06:51:06,519 INFO L272 AbstractInterpreter]: Visited 11 different actions 23 times. Merged at 3 different actions 6 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-09-19 06:51:06,525 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 06:51:06,550 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-09-19 06:51:06,550 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 06:51:06,610 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 06:51:06,610 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 06:51:06,611 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-19 06:51:06,611 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 06:51:06,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-19 06:51:06,612 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-19 06:51:06,612 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-19 06:51:06,612 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2018-09-19 06:51:06,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 06:51:06,660 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-09-19 06:51:06,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-19 06:51:06,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-09-19 06:51:06,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 06:51:06,661 INFO L225 Difference]: With dead ends: 14 [2018-09-19 06:51:06,662 INFO L226 Difference]: Without dead ends: 0 [2018-09-19 06:51:06,664 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-19 06:51:06,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-19 06:51:06,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-19 06:51:06,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-19 06:51:06,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-19 06:51:06,666 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-09-19 06:51:06,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 06:51:06,666 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-19 06:51:06,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-19 06:51:06,666 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-19 06:51:06,666 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-19 06:51:06,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-19 06:51:06,759 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-19 06:51:06,759 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-19 06:51:06,759 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-19 06:51:06,759 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-19 06:51:06,760 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-19 06:51:06,760 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-19 06:51:06,760 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 8 14) the Hoare annotation is: true [2018-09-19 06:51:06,760 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 8 14) no Hoare annotation was computed. [2018-09-19 06:51:06,761 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 8 14) no Hoare annotation was computed. [2018-09-19 06:51:06,761 INFO L426 ceAbstractionStarter]: For program point L10-1(lines 10 12) no Hoare annotation was computed. [2018-09-19 06:51:06,761 INFO L422 ceAbstractionStarter]: At program point L10-3(lines 10 12) the Hoare annotation is: (= (mod main_~x~0 2) 0) [2018-09-19 06:51:06,762 INFO L422 ceAbstractionStarter]: At program point L10-4(lines 10 12) the Hoare annotation is: (= (mod main_~x~0 2) 0) [2018-09-19 06:51:06,762 INFO L426 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-09-19 06:51:06,762 INFO L429 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-09-19 06:51:06,762 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-09-19 06:51:06,763 INFO L426 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-09-19 06:51:06,763 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-09-19 06:51:06,763 INFO L426 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-09-19 06:51:06,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 06:51:06 BoogieIcfgContainer [2018-09-19 06:51:06,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 06:51:06,773 INFO L168 Benchmark]: Toolchain (without parser) took 1522.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -752.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 06:51:06,778 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 06:51:06,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.66 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 06:51:06,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.89 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 06:51:06,782 INFO L168 Benchmark]: Boogie Preprocessor took 28.94 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 06:51:06,784 INFO L168 Benchmark]: RCFGBuilder took 329.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -796.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-09-19 06:51:06,785 INFO L168 Benchmark]: TraceAbstraction took 814.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-09-19 06:51:06,796 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 320.66 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 22.89 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 28.94 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 329.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -796.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 814.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: x % 2 == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 2 SDslu, 33 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9047619047619048 AbsIntWeakeningRatio, 0.2857142857142857 AbsIntAvgWeakeningVarsNumRemoved, 0.047619047619047616 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 15 HoareAnnotationTreeSize, 8 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/simple_true-unreach-call4.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_06-51-06-815.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/simple_true-unreach-call4.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_06-51-06-815.csv Received shutdown request...