java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/mcmillan2006.c.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0ed9222-m [2019-01-11 14:10:27,221 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-11 14:10:27,222 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-11 14:10:27,234 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-11 14:10:27,235 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-11 14:10:27,236 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-11 14:10:27,237 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-11 14:10:27,239 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-11 14:10:27,241 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-11 14:10:27,242 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-11 14:10:27,243 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-01-11 14:10:27,269 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-01-11 14:10:27,282 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-11 14:10:27,282 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-11 14:10:27,283 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-11 14:10:27,283 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-11 14:10:27,284 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-11 14:10:27,284 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-11 14:10:27,284 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-11 14:10:27,284 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-11 14:10:27,285 INFO L133 SettingsManager]: * Explicit value domain=true [2019-01-11 14:10:27,285 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-11 14:10:27,285 INFO L133 SettingsManager]: * Octagon Domain=false [2019-01-11 14:10:27,285 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-01-11 14:10:27,285 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-11 14:10:27,285 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-11 14:10:27,286 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-11 14:10:27,286 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-11 14:10:27,286 INFO L133 SettingsManager]: * Use SBE=true [2019-01-11 14:10:27,287 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-11 14:10:27,287 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-11 14:10:27,287 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-11 14:10:27,287 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-11 14:10:27,287 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-11 14:10:27,288 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-11 14:10:27,288 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-11 14:10:27,288 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-11 14:10:27,288 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-11 14:10:27,288 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-11 14:10:27,289 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-11 14:10:27,289 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-11 14:10:27,289 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-11 14:10:27,289 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-11 14:10:27,289 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in -t:2000 [2019-01-11 14:10:27,290 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-11 14:10:27,290 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-11 14:10:27,290 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-11 14:10:27,290 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-11 14:10:27,290 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-11 14:10:27,290 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8192 -smt2 -in [2019-01-11 14:10:27,291 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-11 14:10:27,291 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-11 14:10:27,341 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-11 14:10:27,356 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-11 14:10:27,360 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-11 14:10:27,362 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-11 14:10:27,362 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-11 14:10:27,363 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/mcmillan2006.c.i_3.bpl [2019-01-11 14:10:27,363 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/mcmillan2006.c.i_3.bpl' [2019-01-11 14:10:27,425 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-11 14:10:27,427 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-11 14:10:27,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-11 14:10:27,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-11 14:10:27,429 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-11 14:10:27,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 02:10:27" (1/1) ... [2019-01-11 14:10:27,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 02:10:27" (1/1) ... [2019-01-11 14:10:27,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-11 14:10:27,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-11 14:10:27,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-11 14:10:27,471 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-11 14:10:27,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 02:10:27" (1/1) ... [2019-01-11 14:10:27,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 02:10:27" (1/1) ... [2019-01-11 14:10:27,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 02:10:27" (1/1) ... [2019-01-11 14:10:27,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 02:10:27" (1/1) ... [2019-01-11 14:10:27,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 02:10:27" (1/1) ... [2019-01-11 14:10:27,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 02:10:27" (1/1) ... [2019-01-11 14:10:27,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 02:10:27" (1/1) ... [2019-01-11 14:10:27,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-11 14:10:27,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-11 14:10:27,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-11 14:10:27,495 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-11 14:10:27,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 02:10:27" (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:8192 -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:8192 -smt2 -in -t:2000 [2019-01-11 14:10:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-11 14:10:27,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-11 14:10:27,827 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-11 14:10:27,827 INFO L286 CfgBuilder]: Removed 2 assue(true) statements. [2019-01-11 14:10:27,829 INFO L202 PluginConnector]: Adding new model mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:10:27 BoogieIcfgContainer [2019-01-11 14:10:27,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-11 14:10:27,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-11 14:10:27,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-11 14:10:27,833 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-11 14:10:27,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.01 02:10:27" (1/2) ... [2019-01-11 14:10:27,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f30fd and model type mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:10:27, skipping insertion in model container [2019-01-11 14:10:27,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:10:27" (2/2) ... [2019-01-11 14:10:27,837 INFO L112 eAbstractionObserver]: Analyzing ICFG mcmillan2006.c.i_3.bpl [2019-01-11 14:10:27,846 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-11 14:10:27,854 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-11 14:10:27,871 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-11 14:10:27,905 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-11 14:10:27,906 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-11 14:10:27,906 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-11 14:10:27,906 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-11 14:10:27,906 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-11 14:10:27,906 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-11 14:10:27,907 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-11 14:10:27,907 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-11 14:10:27,922 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-01-11 14:10:27,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-11 14:10:27,928 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 14:10:27,929 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-11 14:10:27,932 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-01-11 14:10:27,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 14:10:27,940 INFO L82 PathProgramCache]: Analyzing trace with hash 30017, now seen corresponding path program 1 times [2019-01-11 14:10:27,943 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 14:10:27,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 14:10:27,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 14:10:27,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 14:10:27,991 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 14:10:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 14:10:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:10:28,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-11 14:10:28,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-11 14:10:28,107 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-11 14:10:28,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-11 14:10:28,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-11 14:10:28,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-11 14:10:28,126 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2019-01-11 14:10:28,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 14:10:28,177 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-01-11 14:10:28,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-11 14:10:28,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-01-11 14:10:28,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 14:10:28,191 INFO L225 Difference]: With dead ends: 9 [2019-01-11 14:10:28,191 INFO L226 Difference]: Without dead ends: 5 [2019-01-11 14:10:28,195 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-11 14:10:28,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-01-11 14:10:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-01-11 14:10:28,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-01-11 14:10:28,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-01-11 14:10:28,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-01-11 14:10:28,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 14:10:28,231 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-01-11 14:10:28,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-11 14:10:28,231 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-01-11 14:10:28,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-11 14:10:28,232 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 14:10:28,232 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-11 14:10:28,232 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-01-11 14:10:28,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 14:10:28,233 INFO L82 PathProgramCache]: Analyzing trace with hash 928552, now seen corresponding path program 1 times [2019-01-11 14:10:28,233 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-11 14:10:28,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 14:10:28,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 14:10:28,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 14:10:28,235 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-11 14:10:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 14:10:28,695 WARN L181 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2019-01-11 14:10:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:10:28,696 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 14:10:28,697 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-11 14:10:28,698 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2019-01-11 14:10:28,700 INFO L207 CegarAbsIntRunner]: [0], [5], [7], [9] [2019-01-11 14:10:28,741 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-11 14:10:28,741 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-11 14:10:28,955 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-11 14:10:28,958 INFO L272 AbstractInterpreter]: Visited 4 different actions 13 times. Merged at 3 different actions 9 times. Widened at 1 different actions 1 times. Performed 302 root evaluator evaluations with a maximum evaluation depth of 4. Performed 302 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-11 14:10:28,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 14:10:28,964 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-11 14:10:28,965 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-11 14:10:28,965 INFO L193 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 [2019-01-11 14:10:28,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 14:10:28,980 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-11 14:10:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 14:10:29,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 14:10:29,108 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2019-01-11 14:10:29,120 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2019-01-11 14:10:29,120 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-11 14:10:29,130 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:10:29,134 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:10:29,135 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-01-11 14:10:29,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:10:29,160 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-11 14:10:29,181 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2019-01-11 14:10:29,290 WARN L181 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2019-01-11 14:10:29,380 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-01-11 14:10:29,381 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-11 14:10:29,383 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:10:29,386 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-11 14:10:29,387 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:14, output treesize:5 [2019-01-11 14:10:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 14:10:29,455 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-11 14:10:29,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2019-01-11 14:10:29,456 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-11 14:10:29,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-11 14:10:29,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-11 14:10:29,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-01-11 14:10:29,457 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 6 states. [2019-01-11 14:10:29,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 14:10:29,576 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2019-01-11 14:10:29,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-11 14:10:29,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-01-11 14:10:29,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 14:10:29,578 INFO L225 Difference]: With dead ends: 5 [2019-01-11 14:10:29,579 INFO L226 Difference]: Without dead ends: 0 [2019-01-11 14:10:29,580 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-01-11 14:10:29,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-11 14:10:29,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-11 14:10:29,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-11 14:10:29,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-11 14:10:29,582 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-01-11 14:10:29,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 14:10:29,582 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-11 14:10:29,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-11 14:10:29,583 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-11 14:10:29,584 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-11 14:10:29,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-11 14:10:29,638 INFO L444 ceAbstractionStarter]: At program point L65(lines 50 66) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~7.offset 0))) (or (and (= ULTIMATE.start_main_~i~8 0) .cse0) (and .cse0 (= 0 (select (select |#memory_int| ULTIMATE.start_main_~x~7.base) 0))))) [2019-01-11 14:10:29,638 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 9 83) no Hoare annotation was computed. [2019-01-11 14:10:29,638 INFO L444 ceAbstractionStarter]: At program point L80(lines 80 81) the Hoare annotation is: false [2019-01-11 14:10:29,638 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 82) no Hoare annotation was computed. [2019-01-11 14:10:29,638 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 9 83) no Hoare annotation was computed. [2019-01-11 14:10:29,639 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 9 83) no Hoare annotation was computed. [2019-01-11 14:10:29,647 INFO L202 PluginConnector]: Adding new model mcmillan2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:10:29 BoogieIcfgContainer [2019-01-11 14:10:29,647 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-11 14:10:29,648 INFO L168 Benchmark]: Toolchain (without parser) took 2221.94 ms. Allocated memory was 136.3 MB in the beginning and 209.7 MB in the end (delta: 73.4 MB). Free memory was 101.1 MB in the beginning and 184.9 MB in the end (delta: -83.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-01-11 14:10:29,649 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 136.3 MB. Free memory is still 102.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-11 14:10:29,650 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.66 ms. Allocated memory is still 136.3 MB. Free memory was 101.1 MB in the beginning and 99.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-01-11 14:10:29,651 INFO L168 Benchmark]: Boogie Preprocessor took 23.32 ms. Allocated memory is still 136.3 MB. Free memory was 99.4 MB in the beginning and 98.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-01-11 14:10:29,652 INFO L168 Benchmark]: RCFGBuilder took 334.26 ms. Allocated memory is still 136.3 MB. Free memory was 98.1 MB in the beginning and 87.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2019-01-11 14:10:29,653 INFO L168 Benchmark]: TraceAbstraction took 1817.20 ms. Allocated memory was 136.3 MB in the beginning and 209.7 MB in the end (delta: 73.4 MB). Free memory was 86.9 MB in the beginning and 184.9 MB in the end (delta: -98.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-01-11 14:10:29,658 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 136.3 MB. Free memory is still 102.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.66 ms. Allocated memory is still 136.3 MB. Free memory was 101.1 MB in the beginning and 99.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.32 ms. Allocated memory is still 136.3 MB. Free memory was 99.4 MB in the beginning and 98.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 334.26 ms. Allocated memory is still 136.3 MB. Free memory was 98.1 MB in the beginning and 87.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1817.20 ms. Allocated memory was 136.3 MB in the beginning and 209.7 MB in the end (delta: 73.4 MB). Free memory was 86.9 MB in the beginning and 184.9 MB in the end (delta: -98.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 82]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (main_~i~8 == 0 && main_~x~7.offset == 0) || (main_~x~7.offset == 0 && 0 == #memory_int[main_~x~7.base][0]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 1.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 20 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 131 SizeOfPredicates, 16 NumberOfNonLiveVariables, 65 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...