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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/loops/sum_array_false-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 22:00:39,369 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 22:00:39,371 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 22:00:39,386 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 22:00:39,386 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 22:00:39,387 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 22:00:39,390 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 22:00:39,392 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 22:00:39,394 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 22:00:39,403 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 22:00:39,407 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 22:00:39,407 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 22:00:39,408 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 22:00:39,409 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 22:00:39,410 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 22:00:39,414 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 22:00:39,415 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 22:00:39,419 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 22:00:39,421 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 22:00:39,426 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 22:00:39,429 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 22:00:39,430 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 22:00:39,433 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 22:00:39,444 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 22:00:39,444 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 22:00:39,447 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 22:00:39,448 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 22:00:39,448 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 22:00:39,471 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 22:00:39,471 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 22:00:39,472 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 22:00:39,472 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 22:00:39,472 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 22:00:39,472 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 22:00:39,472 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 22:00:39,474 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 22:00:39,474 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 22:00:39,474 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 22:00:39,474 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 22:00:39,474 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 22:00:39,475 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 22:00:39,475 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 22:00:39,476 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 22:00:39,476 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 22:00:39,476 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 22:00:39,476 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 22:00:39,476 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 22:00:39,477 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 22:00:39,477 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 22:00:39,477 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 22:00:39,477 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 22:00:39,477 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 22:00:39,477 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 22:00:39,479 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 22:00:39,479 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 22:00:39,479 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 22:00:39,479 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 22:00:39,480 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 22:00:39,480 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 22:00:39,480 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 22:00:39,480 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 22:00:39,480 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 22:00:39,480 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 22:00:39,546 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 22:00:39,561 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 22:00:39,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 22:00:39,567 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 22:00:39,568 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 22:00:39,568 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array_false-unreach-call.i [2018-11-07 22:00:39,637 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43a49b11/47a8f141461b4bc689d7e5d64094b95c/FLAG930ed14ac [2018-11-07 22:00:40,147 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 22:00:40,148 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array_false-unreach-call.i [2018-11-07 22:00:40,156 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43a49b11/47a8f141461b4bc689d7e5d64094b95c/FLAG930ed14ac [2018-11-07 22:00:40,176 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43a49b11/47a8f141461b4bc689d7e5d64094b95c [2018-11-07 22:00:40,187 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 22:00:40,189 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 22:00:40,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 22:00:40,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 22:00:40,193 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 22:00:40,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:00:40" (1/1) ... [2018-11-07 22:00:40,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70cac6dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:00:40, skipping insertion in model container [2018-11-07 22:00:40,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:00:40" (1/1) ... [2018-11-07 22:00:40,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 22:00:40,227 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 22:00:40,413 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 22:00:40,418 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 22:00:40,445 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 22:00:40,468 INFO L193 MainTranslator]: Completed translation [2018-11-07 22:00:40,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:00:40 WrapperNode [2018-11-07 22:00:40,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 22:00:40,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 22:00:40,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 22:00:40,470 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 22:00:40,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:00:40" (1/1) ... [2018-11-07 22:00:40,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:00:40" (1/1) ... [2018-11-07 22:00:40,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 22:00:40,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 22:00:40,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 22:00:40,497 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 22:00:40,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:00:40" (1/1) ... [2018-11-07 22:00:40,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:00:40" (1/1) ... [2018-11-07 22:00:40,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:00:40" (1/1) ... [2018-11-07 22:00:40,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:00:40" (1/1) ... [2018-11-07 22:00:40,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:00:40" (1/1) ... [2018-11-07 22:00:40,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:00:40" (1/1) ... [2018-11-07 22:00:40,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:00:40" (1/1) ... [2018-11-07 22:00:40,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 22:00:40,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 22:00:40,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 22:00:40,528 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 22:00:40,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:00:40" (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 [2018-11-07 22:00:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-07 22:00:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 22:00:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 22:00:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-07 22:00:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 22:00:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 22:00:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 22:00:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 22:00:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-07 22:00:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-07 22:00:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-07 22:00:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-07 22:00:41,172 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 22:00:41,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:00:41 BoogieIcfgContainer [2018-11-07 22:00:41,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 22:00:41,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 22:00:41,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 22:00:41,178 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 22:00:41,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:00:40" (1/3) ... [2018-11-07 22:00:41,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4f8b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:00:41, skipping insertion in model container [2018-11-07 22:00:41,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:00:40" (2/3) ... [2018-11-07 22:00:41,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4f8b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:00:41, skipping insertion in model container [2018-11-07 22:00:41,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:00:41" (3/3) ... [2018-11-07 22:00:41,182 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_array_false-unreach-call.i [2018-11-07 22:00:41,192 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 22:00:41,203 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 22:00:41,222 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 22:00:41,258 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 22:00:41,258 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 22:00:41,258 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 22:00:41,258 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 22:00:41,258 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 22:00:41,259 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 22:00:41,259 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 22:00:41,259 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 22:00:41,278 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-11-07 22:00:41,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-07 22:00:41,285 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:00:41,286 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:00:41,288 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:00:41,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:00:41,295 INFO L82 PathProgramCache]: Analyzing trace with hash -2027007793, now seen corresponding path program 1 times [2018-11-07 22:00:41,297 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:00:41,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:00:41,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:00:41,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:00:41,350 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:00:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:00:41,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:00:41,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 22:00:41,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-07 22:00:41,454 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 22:00:41,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-07 22:00:41,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-07 22:00:41,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 22:00:41,483 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2018-11-07 22:00:41,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:00:41,510 INFO L93 Difference]: Finished difference Result 93 states and 108 transitions. [2018-11-07 22:00:41,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 22:00:41,511 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-11-07 22:00:41,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:00:41,519 INFO L225 Difference]: With dead ends: 93 [2018-11-07 22:00:41,519 INFO L226 Difference]: Without dead ends: 44 [2018-11-07 22:00:41,523 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 22:00:41,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-07 22:00:41,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-07 22:00:41,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-07 22:00:41,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-11-07 22:00:41,569 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 25 [2018-11-07 22:00:41,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:00:41,570 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-11-07 22:00:41,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-07 22:00:41,570 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-11-07 22:00:41,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-07 22:00:41,571 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:00:41,571 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:00:41,572 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:00:41,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:00:41,572 INFO L82 PathProgramCache]: Analyzing trace with hash -306666961, now seen corresponding path program 1 times [2018-11-07 22:00:41,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:00:41,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:00:41,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:00:41,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:00:41,574 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:00:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:00:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:00:41,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 22:00:41,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 22:00:41,824 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 22:00:41,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 22:00:41,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 22:00:41,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-07 22:00:41,828 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 4 states. [2018-11-07 22:00:42,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:00:42,495 INFO L93 Difference]: Finished difference Result 106 states and 117 transitions. [2018-11-07 22:00:42,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 22:00:42,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-11-07 22:00:42,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:00:42,499 INFO L225 Difference]: With dead ends: 106 [2018-11-07 22:00:42,500 INFO L226 Difference]: Without dead ends: 69 [2018-11-07 22:00:42,501 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 22:00:42,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-11-07 22:00:42,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2018-11-07 22:00:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-07 22:00:42,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-11-07 22:00:42,515 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 28 [2018-11-07 22:00:42,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:00:42,516 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-11-07 22:00:42,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 22:00:42,516 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2018-11-07 22:00:42,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-07 22:00:42,517 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:00:42,518 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:00:42,518 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:00:42,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:00:42,519 INFO L82 PathProgramCache]: Analyzing trace with hash 2095721215, now seen corresponding path program 1 times [2018-11-07 22:00:42,519 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:00:42,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:00:42,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:00:42,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:00:42,520 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:00:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-07 22:00:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-07 22:00:42,817 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-07 22:00:42,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 10:00:42 BoogieIcfgContainer [2018-11-07 22:00:42,885 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 22:00:42,886 INFO L168 Benchmark]: Toolchain (without parser) took 2698.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -709.5 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. [2018-11-07 22:00:42,889 INFO L168 Benchmark]: CDTParser took 0.28 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. [2018-11-07 22:00:42,889 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.39 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. [2018-11-07 22:00:42,891 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.95 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. [2018-11-07 22:00:42,891 INFO L168 Benchmark]: Boogie Preprocessor took 30.69 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. [2018-11-07 22:00:42,892 INFO L168 Benchmark]: RCFGBuilder took 646.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -773.3 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2018-11-07 22:00:42,894 INFO L168 Benchmark]: TraceAbstraction took 1710.76 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: 53.2 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB. [2018-11-07 22:00:42,899 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 279.39 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 26.95 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 30.69 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 646.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -773.3 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1710.76 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: 53.2 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int M = __VERIFIER_nondet_uint(); [L15] FCALL int A[M], B[M], C[M]; VAL [A={4294967300:0}, B={4294967302:0}, C={4294967299:0}, M=1] [L16] unsigned int i; [L18] i=0 VAL [A={4294967300:0}, B={4294967302:0}, C={4294967299:0}, i=0, M=1] [L18] COND TRUE i