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/loop-lit/gsv2008_true-unreach-call.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 22:14:48,318 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 22:14:48,320 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 22:14:48,332 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 22:14:48,332 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 22:14:48,333 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 22:14:48,334 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 22:14:48,336 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 22:14:48,338 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 22:14:48,339 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 22:14:48,340 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 22:14:48,340 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 22:14:48,341 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 22:14:48,342 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 22:14:48,345 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 22:14:48,347 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 22:14:48,347 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 22:14:48,355 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 22:14:48,357 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 22:14:48,362 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 22:14:48,364 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 22:14:48,365 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 22:14:48,371 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 22:14:48,371 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 22:14:48,372 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 22:14:48,373 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 22:14:48,374 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 22:14:48,377 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 22:14:48,378 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 22:14:48,380 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 22:14:48,381 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 22:14:48,381 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 22:14:48,382 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 22:14:48,382 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 22:14:48,383 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 22:14:48,383 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 22:14:48,385 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 22:14:48,406 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 22:14:48,406 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 22:14:48,407 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 22:14:48,407 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 22:14:48,407 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 22:14:48,408 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 22:14:48,408 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 22:14:48,408 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 22:14:48,408 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 22:14:48,408 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 22:14:48,408 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 22:14:48,409 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 22:14:48,409 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 22:14:48,409 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 22:14:48,410 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 22:14:48,410 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 22:14:48,410 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 22:14:48,410 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 22:14:48,410 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 22:14:48,411 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 22:14:48,411 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 22:14:48,411 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 22:14:48,411 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 22:14:48,411 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 22:14:48,412 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 22:14:48,412 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 22:14:48,412 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 22:14:48,412 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 22:14:48,412 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 22:14:48,413 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 22:14:48,413 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 22:14:48,413 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 22:14:48,413 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 22:14:48,413 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 22:14:48,414 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 22:14:48,458 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 22:14:48,476 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 22:14:48,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 22:14:48,481 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 22:14:48,482 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 22:14:48,483 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008_true-unreach-call.c.i.v+lhb-reducer.c [2018-11-07 22:14:48,550 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/018816083/1c1e759e3ee34394ad223bc675214a82/FLAG803fefb11 [2018-11-07 22:14:49,007 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 22:14:49,007 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008_true-unreach-call.c.i.v+lhb-reducer.c [2018-11-07 22:14:49,014 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/018816083/1c1e759e3ee34394ad223bc675214a82/FLAG803fefb11 [2018-11-07 22:14:49,028 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/018816083/1c1e759e3ee34394ad223bc675214a82 [2018-11-07 22:14:49,040 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 22:14:49,041 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 22:14:49,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 22:14:49,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 22:14:49,046 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 22:14:49,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:14:49" (1/1) ... [2018-11-07 22:14:49,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11aac10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:49, skipping insertion in model container [2018-11-07 22:14:49,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:14:49" (1/1) ... [2018-11-07 22:14:49,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 22:14:49,089 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 22:14:49,316 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 22:14:49,322 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 22:14:49,350 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 22:14:49,368 INFO L193 MainTranslator]: Completed translation [2018-11-07 22:14:49,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:49 WrapperNode [2018-11-07 22:14:49,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 22:14:49,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 22:14:49,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 22:14:49,370 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 22:14:49,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:49" (1/1) ... [2018-11-07 22:14:49,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:49" (1/1) ... [2018-11-07 22:14:49,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 22:14:49,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 22:14:49,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 22:14:49,394 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 22:14:49,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:49" (1/1) ... [2018-11-07 22:14:49,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:49" (1/1) ... [2018-11-07 22:14:49,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:49" (1/1) ... [2018-11-07 22:14:49,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:49" (1/1) ... [2018-11-07 22:14:49,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:49" (1/1) ... [2018-11-07 22:14:49,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:49" (1/1) ... [2018-11-07 22:14:49,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:49" (1/1) ... [2018-11-07 22:14:49,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 22:14:49,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 22:14:49,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 22:14:49,421 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 22:14:49,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:49" (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 22:14:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 22:14:49,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 22:14:49,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 22:14:49,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 22:14:49,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 22:14:49,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 22:14:49,816 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 22:14:49,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:14:49 BoogieIcfgContainer [2018-11-07 22:14:49,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 22:14:49,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 22:14:49,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 22:14:49,823 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 22:14:49,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:14:49" (1/3) ... [2018-11-07 22:14:49,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@674307ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:14:49, skipping insertion in model container [2018-11-07 22:14:49,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:49" (2/3) ... [2018-11-07 22:14:49,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@674307ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:14:49, skipping insertion in model container [2018-11-07 22:14:49,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:14:49" (3/3) ... [2018-11-07 22:14:49,827 INFO L112 eAbstractionObserver]: Analyzing ICFG gsv2008_true-unreach-call.c.i.v+lhb-reducer.c [2018-11-07 22:14:49,838 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 22:14:49,846 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 22:14:49,860 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 22:14:49,897 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 22:14:49,897 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 22:14:49,897 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 22:14:49,898 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 22:14:49,898 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 22:14:49,898 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 22:14:49,898 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 22:14:49,898 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 22:14:49,916 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-07 22:14:49,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-07 22:14:49,923 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:14:49,924 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:14:49,926 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:14:49,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:14:49,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1883805102, now seen corresponding path program 1 times [2018-11-07 22:14:49,935 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:14:49,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:14:49,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:14:49,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:14:49,994 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:14:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:14:50,311 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 22:14:50,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 22:14:50,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 22:14:50,315 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 22:14:50,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 22:14:50,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 22:14:50,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 22:14:50,338 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2018-11-07 22:14:50,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:14:50,513 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2018-11-07 22:14:50,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 22:14:50,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-07 22:14:50,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:14:50,528 INFO L225 Difference]: With dead ends: 33 [2018-11-07 22:14:50,528 INFO L226 Difference]: Without dead ends: 16 [2018-11-07 22:14:50,532 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-07 22:14:50,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-07 22:14:50,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-07 22:14:50,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-07 22:14:50,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-07 22:14:50,567 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-11-07 22:14:50,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:14:50,568 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-07 22:14:50,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 22:14:50,568 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-07 22:14:50,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-07 22:14:50,569 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:14:50,569 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:14:50,570 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:14:50,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:14:50,570 INFO L82 PathProgramCache]: Analyzing trace with hash -2141584271, now seen corresponding path program 1 times [2018-11-07 22:14:50,570 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:14:50,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:14:50,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:14:50,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:14:50,572 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:14:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:14:50,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:14:50,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 22:14:50,737 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 22:14:50,739 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-07 22:14:50,741 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [16], [18], [21], [23], [26], [27], [32], [33], [34] [2018-11-07 22:14:50,775 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 22:14:50,775 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 22:14:51,026 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 22:14:51,027 INFO L272 AbstractInterpreter]: Visited 14 different actions 49 times. Merged at 5 different actions 35 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 13 variables. [2018-11-07 22:14:51,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:14:51,073 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 22:14:51,073 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 22:14:51,073 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 22:14:51,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:14:51,085 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 22:14:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:14:51,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 22:14:51,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:14:51,490 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 22:14:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:14:51,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 22:14:51,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-11-07 22:14:51,696 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 22:14:51,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 22:14:51,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 22:14:51,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-11-07 22:14:51,698 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2018-11-07 22:14:51,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:14:51,760 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-07 22:14:51,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 22:14:51,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-11-07 22:14:51,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:14:51,761 INFO L225 Difference]: With dead ends: 16 [2018-11-07 22:14:51,762 INFO L226 Difference]: Without dead ends: 0 [2018-11-07 22:14:51,763 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-11-07 22:14:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-07 22:14:51,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-07 22:14:51,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-07 22:14:51,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-07 22:14:51,764 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-11-07 22:14:51,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:14:51,765 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-07 22:14:51,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 22:14:51,765 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-07 22:14:51,765 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-07 22:14:51,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-07 22:14:51,796 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-07 22:14:51,796 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-07 22:14:51,796 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-07 22:14:51,796 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-07 22:14:51,797 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-07 22:14:51,797 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-07 22:14:51,797 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-07 22:14:51,797 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 9 69) the Hoare annotation is: true [2018-11-07 22:14:51,797 INFO L425 ceAbstractionStarter]: For program point L27(lines 27 66) no Hoare annotation was computed. [2018-11-07 22:14:51,798 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 9 69) no Hoare annotation was computed. [2018-11-07 22:14:51,798 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 67) no Hoare annotation was computed. [2018-11-07 22:14:51,798 INFO L425 ceAbstractionStarter]: For program point L52(line 52) no Hoare annotation was computed. [2018-11-07 22:14:51,798 INFO L425 ceAbstractionStarter]: For program point L50(lines 50 59) no Hoare annotation was computed. [2018-11-07 22:14:51,798 INFO L425 ceAbstractionStarter]: For program point L15(lines 15 68) no Hoare annotation was computed. [2018-11-07 22:14:51,798 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 9 69) no Hoare annotation was computed. [2018-11-07 22:14:51,799 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2018-11-07 22:14:51,799 INFO L421 ceAbstractionStarter]: At program point L41(lines 28 62) the Hoare annotation is: (or (< main_~main__x~0 0) (< 0 main_~main__y~0)) [2018-11-07 22:14:51,799 INFO L425 ceAbstractionStarter]: For program point L35(lines 35 61) no Hoare annotation was computed. [2018-11-07 22:14:51,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 10:14:51 BoogieIcfgContainer [2018-11-07 22:14:51,810 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 22:14:51,811 INFO L168 Benchmark]: Toolchain (without parser) took 2770.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -706.2 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2018-11-07 22:14:51,813 INFO L168 Benchmark]: CDTParser took 0.22 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 22:14:51,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.60 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 22:14:51,814 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.98 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 22:14:51,815 INFO L168 Benchmark]: Boogie Preprocessor took 27.06 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 22:14:51,816 INFO L168 Benchmark]: RCFGBuilder took 396.98 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -800.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2018-11-07 22:14:51,817 INFO L168 Benchmark]: TraceAbstraction took 1991.32 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: 83.2 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. [2018-11-07 22:14:51,821 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 326.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 23.98 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 27.06 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 396.98 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -800.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1991.32 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: 83.2 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 52]: 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: 28]: Loop Invariant Derived loop invariant: main__x < 0 || 0 < main__y - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. SAFE Result, 1.9s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 SDtfs, 12 SDslu, 62 SDs, 0 SdLazy, 28 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s 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, 0.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 13 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 54 ConstructedInterpolants, 2 QuantifiedInterpolants, 2466 SizeOfPredicates, 6 NumberOfNonLiveVariables, 70 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...