java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-09-30 20:14:05,310 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 20:14:05,312 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 20:14:05,327 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 20:14:05,328 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 20:14:05,329 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 20:14:05,330 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 20:14:05,332 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 20:14:05,333 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 20:14:05,334 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 20:14:05,335 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-30 20:14:05,361 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-30 20:14:05,389 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 20:14:05,390 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 20:14:05,392 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 20:14:05,393 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 20:14:05,393 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 20:14:05,393 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 20:14:05,394 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 20:14:05,394 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 20:14:05,394 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 20:14:05,394 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 20:14:05,394 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 20:14:05,395 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 20:14:05,395 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 20:14:05,395 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 20:14:05,395 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 20:14:05,396 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 20:14:05,397 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 20:14:05,397 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 20:14:05,397 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 20:14:05,397 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 20:14:05,399 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 20:14:05,399 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 20:14:05,399 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 20:14:05,399 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 20:14:05,399 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 20:14:05,400 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 20:14:05,400 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 20:14:05,400 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 20:14:05,400 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 20:14:05,400 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 20:14:05,448 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 20:14:05,460 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 20:14:05,465 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 20:14:05,467 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 20:14:05,468 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 20:14:05,468 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1.i_3.bpl [2018-09-30 20:14:05,469 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1.i_3.bpl' [2018-09-30 20:14:05,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 20:14:05,520 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 20:14:05,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 20:14:05,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 20:14:05,521 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 20:14:05,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:14:05" (1/1) ... [2018-09-30 20:14:05,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:14:05" (1/1) ... [2018-09-30 20:14:05,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 20:14:05,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 20:14:05,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 20:14:05,560 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 20:14:05,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:14:05" (1/1) ... [2018-09-30 20:14:05,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:14:05" (1/1) ... [2018-09-30 20:14:05,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:14:05" (1/1) ... [2018-09-30 20:14:05,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:14:05" (1/1) ... [2018-09-30 20:14:05,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:14:05" (1/1) ... [2018-09-30 20:14:05,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:14:05" (1/1) ... [2018-09-30 20:14:05,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:14:05" (1/1) ... [2018-09-30 20:14:05,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 20:14:05,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 20:14:05,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 20:14:05,581 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 20:14:05,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:14:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 20:14:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-30 20:14:05,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-30 20:14:05,876 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-30 20:14:05,878 INFO L202 PluginConnector]: Adding new model count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 08:14:05 BoogieIcfgContainer [2018-09-30 20:14:05,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 20:14:05,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 20:14:05,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 20:14:05,883 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 20:14:05,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:14:05" (1/2) ... [2018-09-30 20:14:05,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4435116e and model type count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 08:14:05, skipping insertion in model container [2018-09-30 20:14:05,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 08:14:05" (2/2) ... [2018-09-30 20:14:05,888 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_1.i_3.bpl [2018-09-30 20:14:05,898 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 20:14:05,909 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 20:14:05,964 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 20:14:05,965 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 20:14:05,965 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 20:14:05,965 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 20:14:05,965 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 20:14:05,967 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 20:14:05,967 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 20:14:05,968 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 20:14:05,968 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 20:14:05,984 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-09-30 20:14:05,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-30 20:14:06,002 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:14:06,003 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-30 20:14:06,004 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:14:06,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:14:06,011 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-09-30 20:14:06,013 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:14:06,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:14:06,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:14:06,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:14:06,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:14:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:14:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:14:06,162 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:14:06,163 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 20:14:06,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 20:14:06,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 20:14:06,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-30 20:14:06,183 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-09-30 20:14:06,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:14:06,235 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-09-30 20:14:06,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 20:14:06,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-09-30 20:14:06,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:14:06,248 INFO L225 Difference]: With dead ends: 11 [2018-09-30 20:14:06,248 INFO L226 Difference]: Without dead ends: 7 [2018-09-30 20:14:06,252 INFO L605 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 [2018-09-30 20:14:06,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-30 20:14:06,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-30 20:14:06,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-30 20:14:06,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-30 20:14:06,288 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-09-30 20:14:06,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:14:06,289 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-30 20:14:06,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 20:14:06,289 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-30 20:14:06,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-30 20:14:06,290 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:14:06,290 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-09-30 20:14:06,290 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:14:06,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:14:06,294 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-09-30 20:14:06,294 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:14:06,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:14:06,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:14:06,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:14:06,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:14:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:14:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:14:06,410 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:14:06,410 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP 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) [2018-09-30 20:14:06,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:14:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:14:06,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:14:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:14:06,503 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:14:06,504 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-30 20:14:06,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-30 20:14:06,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-30 20:14:06,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-30 20:14:06,505 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-09-30 20:14:06,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:14:06,558 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-09-30 20:14:06,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-30 20:14:06,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-09-30 20:14:06,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:14:06,560 INFO L225 Difference]: With dead ends: 11 [2018-09-30 20:14:06,560 INFO L226 Difference]: Without dead ends: 9 [2018-09-30 20:14:06,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-30 20:14:06,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-09-30 20:14:06,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-09-30 20:14:06,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-30 20:14:06,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-09-30 20:14:06,564 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-09-30 20:14:06,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:14:06,564 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-09-30 20:14:06,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-30 20:14:06,565 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-09-30 20:14:06,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 20:14:06,565 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:14:06,566 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-09-30 20:14:06,566 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:14:06,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:14:06,566 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-09-30 20:14:06,566 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:14:06,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:14:06,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:14:06,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:14:06,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:14:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:14:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:14:06,673 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:14:06,673 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:14:06,682 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:14:06,699 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:14:06,699 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:14:06,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:14:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:14:06,727 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:14:06,727 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-30 20:14:06,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-30 20:14:06,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-30 20:14:06,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-30 20:14:06,729 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-09-30 20:14:06,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:14:06,798 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-09-30 20:14:06,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 20:14:06,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-09-30 20:14:06,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:14:06,799 INFO L225 Difference]: With dead ends: 13 [2018-09-30 20:14:06,799 INFO L226 Difference]: Without dead ends: 11 [2018-09-30 20:14:06,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-30 20:14:06,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-30 20:14:06,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-30 20:14:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-30 20:14:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-09-30 20:14:06,804 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-09-30 20:14:06,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:14:06,804 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-09-30 20:14:06,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-30 20:14:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-09-30 20:14:06,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-30 20:14:06,805 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:14:06,805 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-09-30 20:14:06,806 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:14:06,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:14:06,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-09-30 20:14:06,806 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:14:06,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:14:06,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:14:06,808 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:14:06,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:14:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:14:06,947 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:14:06,948 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:14:06,948 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:14:06,958 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:14:06,968 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-09-30 20:14:06,969 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:14:06,970 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:14:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-30 20:14:07,039 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-30 20:14:07,039 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-09-30 20:14:07,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 20:14:07,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 20:14:07,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-09-30 20:14:07,040 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-09-30 20:14:07,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:14:07,092 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-09-30 20:14:07,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 20:14:07,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-09-30 20:14:07,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:14:07,094 INFO L225 Difference]: With dead ends: 13 [2018-09-30 20:14:07,095 INFO L226 Difference]: Without dead ends: 0 [2018-09-30 20:14:07,095 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-09-30 20:14:07,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-30 20:14:07,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-30 20:14:07,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-30 20:14:07,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-30 20:14:07,096 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-09-30 20:14:07,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:14:07,096 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-30 20:14:07,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 20:14:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-30 20:14:07,097 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-30 20:14:07,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-30 20:14:07,320 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 3 [2018-09-30 20:14:07,323 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 35) no Hoare annotation was computed. [2018-09-30 20:14:07,323 INFO L422 ceAbstractionStarter]: At program point L32(lines 13 32) the Hoare annotation is: (<= ULTIMATE.start_main_~i~4 1000000) [2018-09-30 20:14:07,325 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 35) no Hoare annotation was computed. [2018-09-30 20:14:07,325 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 35) no Hoare annotation was computed. [2018-09-30 20:14:07,325 INFO L422 ceAbstractionStarter]: At program point L26(lines 26 33) the Hoare annotation is: false [2018-09-30 20:14:07,326 INFO L422 ceAbstractionStarter]: At program point L16(lines 16 27) the Hoare annotation is: (<= ULTIMATE.start_main_~i~4 1000000) [2018-09-30 20:14:07,326 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 34) no Hoare annotation was computed. [2018-09-30 20:14:07,338 INFO L202 PluginConnector]: Adding new model count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 08:14:07 BoogieIcfgContainer [2018-09-30 20:14:07,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 20:14:07,339 INFO L168 Benchmark]: Toolchain (without parser) took 1821.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2018-09-30 20:14:07,341 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 20:14:07,341 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.31 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 20:14:07,342 INFO L168 Benchmark]: Boogie Preprocessor took 20.11 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 20:14:07,343 INFO L168 Benchmark]: RCFGBuilder took 298.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-30 20:14:07,344 INFO L168 Benchmark]: TraceAbstraction took 1459.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 76.7 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. [2018-09-30 20:14:07,348 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 0.20 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. * Boogie Procedure Inliner took 38.31 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. * Boogie Preprocessor took 20.11 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. * RCFGBuilder took 298.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1459.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 76.7 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: 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: 26]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: main_~i~4 <= 1000000 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: main_~i~4 <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 16 SDs, 0 SdLazy, 20 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 11 NumberOfFragments, 7 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 52 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 759 SizeOfPredicates, 5 NumberOfNonLiveVariables, 55 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 12/40 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_1.i_3.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_20-14-07-368.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_1.i_3.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_20-14-07-368.csv Received shutdown request...