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_variant.i_2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-9f4048f [2018-10-04 12:21:46,111 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 12:21:46,113 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 12:21:46,127 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 12:21:46,127 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 12:21:46,128 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 12:21:46,130 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 12:21:46,133 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 12:21:46,136 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 12:21:46,137 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 12:21:46,139 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-04 12:21:46,140 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-04 12:21:46,141 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-04 12:21:46,143 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-04 12:21:46,149 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-04 12:21:46,150 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-04 12:21:46,154 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-04 12:21:46,157 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-04 12:21:46,158 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-04 12:21:46,161 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-04 12:21:46,167 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-04 12:21:46,168 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-04 12:21:46,171 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-04 12:21:46,174 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-04 12:21:46,174 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-04 12:21:46,175 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-04 12:21:46,177 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-04 12:21:46,177 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-04 12:21:46,178 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-04 12:21:46,183 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-04 12:21:46,183 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-04 12:21:46,184 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-04 12:21:46,184 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-04 12:21:46,184 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-04 12:21:46,186 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-04 12:21:46,187 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-04 12:21:46,188 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 [2018-10-04 12:21:46,218 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 12:21:46,218 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 12:21:46,220 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 12:21:46,220 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 12:21:46,221 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 12:21:46,221 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 12:21:46,221 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 12:21:46,222 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 12:21:46,223 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 12:21:46,223 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 12:21:46,223 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 12:21:46,223 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 12:21:46,223 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 12:21:46,224 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 12:21:46,224 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 12:21:46,224 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 12:21:46,224 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 12:21:46,224 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 12:21:46,225 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 12:21:46,225 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 12:21:46,225 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 12:21:46,225 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 12:21:46,225 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 12:21:46,226 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 12:21:46,226 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 12:21:46,226 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 12:21:46,226 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 12:21:46,226 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 12:21:46,227 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 12:21:46,229 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 12:21:46,287 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 12:21:46,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 12:21:46,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 12:21:46,315 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 12:21:46,316 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 12:21:46,317 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1_variant.i_2.bpl [2018-10-04 12:21:46,317 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1_variant.i_2.bpl' [2018-10-04 12:21:46,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 12:21:46,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 12:21:46,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 12:21:46,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 12:21:46,370 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 12:21:46,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:21:46" (1/1) ... [2018-10-04 12:21:46,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:21:46" (1/1) ... [2018-10-04 12:21:46,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 12:21:46,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 12:21:46,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 12:21:46,409 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 12:21:46,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:21:46" (1/1) ... [2018-10-04 12:21:46,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:21:46" (1/1) ... [2018-10-04 12:21:46,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:21:46" (1/1) ... [2018-10-04 12:21:46,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:21:46" (1/1) ... [2018-10-04 12:21:46,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:21:46" (1/1) ... [2018-10-04 12:21:46,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:21:46" (1/1) ... [2018-10-04 12:21:46,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:21:46" (1/1) ... [2018-10-04 12:21:46,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 12:21:46,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 12:21:46,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 12:21:46,427 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 12:21:46,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:21:46" (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 [2018-10-04 12:21:46,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 12:21:46,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 12:21:46,758 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 12:21:46,759 INFO L202 PluginConnector]: Adding new model count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:21:46 BoogieIcfgContainer [2018-10-04 12:21:46,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 12:21:46,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 12:21:46,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 12:21:46,763 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 12:21:46,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:21:46" (1/2) ... [2018-10-04 12:21:46,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f7d94 and model type count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 12:21:46, skipping insertion in model container [2018-10-04 12:21:46,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:21:46" (2/2) ... [2018-10-04 12:21:46,767 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i_2.bpl [2018-10-04 12:21:46,777 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 12:21:46,786 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 12:21:46,839 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 12:21:46,840 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 12:21:46,840 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 12:21:46,840 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 12:21:46,840 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 12:21:46,840 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 12:21:46,841 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 12:21:46,841 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 12:21:46,841 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 12:21:46,856 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-04 12:21:46,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 12:21:46,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:21:46,864 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 12:21:46,866 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:21:46,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:21:46,872 INFO L82 PathProgramCache]: Analyzing trace with hash 925701, now seen corresponding path program 1 times [2018-10-04 12:21:46,875 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:21:46,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:21:46,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:21:46,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:21:46,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:21:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:21:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:21:47,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 12:21:47,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-04 12:21:47,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 12:21:47,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 12:21:47,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-04 12:21:47,083 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2018-10-04 12:21:47,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:21:47,246 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2018-10-04 12:21:47,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 12:21:47,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-04 12:21:47,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:21:47,275 INFO L225 Difference]: With dead ends: 12 [2018-10-04 12:21:47,276 INFO L226 Difference]: Without dead ends: 8 [2018-10-04 12:21:47,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-04 12:21:47,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-04 12:21:47,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-10-04 12:21:47,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-04 12:21:47,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-04 12:21:47,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-10-04 12:21:47,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:21:47,348 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-04 12:21:47,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 12:21:47,348 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-04 12:21:47,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 12:21:47,349 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:21:47,349 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-10-04 12:21:47,349 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:21:47,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:21:47,350 INFO L82 PathProgramCache]: Analyzing trace with hash 889531649, now seen corresponding path program 1 times [2018-10-04 12:21:47,350 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:21:47,350 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:21:47,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:21:47,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:21:47,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:21:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:21:47,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:21:47,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:21:47,546 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:21:47,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:21:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:21:47,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:21:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:21:47,669 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:21:47,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-10-04 12:21:47,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 12:21:47,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 12:21:47,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-04 12:21:47,671 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 7 states. [2018-10-04 12:21:47,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:21:47,773 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-04 12:21:47,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 12:21:47,774 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-10-04 12:21:47,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:21:47,775 INFO L225 Difference]: With dead ends: 12 [2018-10-04 12:21:47,775 INFO L226 Difference]: Without dead ends: 10 [2018-10-04 12:21:47,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-04 12:21:47,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-04 12:21:47,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-10-04 12:21:47,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 12:21:47,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-04 12:21:47,780 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-10-04 12:21:47,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:21:47,780 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-04 12:21:47,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 12:21:47,781 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-04 12:21:47,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 12:21:47,781 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:21:47,782 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-10-04 12:21:47,782 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:21:47,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:21:47,782 INFO L82 PathProgramCache]: Analyzing trace with hash 141355773, now seen corresponding path program 2 times [2018-10-04 12:21:47,783 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:21:47,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:21:47,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:21:47,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:21:47,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:21:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:21:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:21:48,071 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:21:48,071 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 [2018-10-04 12:21:48,090 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:21:48,130 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:21:48,130 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:21:48,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:21:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:21:48,305 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:21:48,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 9 [2018-10-04 12:21:48,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 12:21:48,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 12:21:48,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-04 12:21:48,307 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 9 states. [2018-10-04 12:21:48,556 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-10-04 12:21:48,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:21:48,586 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2018-10-04 12:21:48,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 12:21:48,586 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 8 [2018-10-04 12:21:48,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:21:48,587 INFO L225 Difference]: With dead ends: 12 [2018-10-04 12:21:48,587 INFO L226 Difference]: Without dead ends: 0 [2018-10-04 12:21:48,588 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2018-10-04 12:21:48,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-04 12:21:48,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-04 12:21:48,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-04 12:21:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-04 12:21:48,590 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-10-04 12:21:48,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:21:48,591 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-04 12:21:48,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 12:21:48,591 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-04 12:21:48,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-04 12:21:48,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-04 12:21:48,741 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 35) no Hoare annotation was computed. [2018-10-04 12:21:48,741 INFO L421 ceAbstractionStarter]: At program point L32(lines 32 33) the Hoare annotation is: false [2018-10-04 12:21:48,742 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 35) no Hoare annotation was computed. [2018-10-04 12:21:48,742 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 35) no Hoare annotation was computed. [2018-10-04 12:21:48,742 INFO L421 ceAbstractionStarter]: At program point L28(lines 13 28) the Hoare annotation is: (or (<= ULTIMATE.start_main_~i~4 0) (and (<= ULTIMATE.start_main_~i~4 1000000) (= ULTIMATE.start___VERIFIER_assert_~cond 1))) [2018-10-04 12:21:48,742 INFO L421 ceAbstractionStarter]: At program point L20(lines 20 29) the Hoare annotation is: (and (= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= ULTIMATE.start_main_~i~4 999999)) [2018-10-04 12:21:48,743 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 34) no Hoare annotation was computed. [2018-10-04 12:21:48,752 INFO L202 PluginConnector]: Adding new model count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 12:21:48 BoogieIcfgContainer [2018-10-04 12:21:48,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 12:21:48,753 INFO L168 Benchmark]: Toolchain (without parser) took 2384.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 108.4 MB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. [2018-10-04 12:21:48,754 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 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. [2018-10-04 12:21:48,755 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.64 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. [2018-10-04 12:21:48,755 INFO L168 Benchmark]: Boogie Preprocessor took 17.16 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. [2018-10-04 12:21:48,756 INFO L168 Benchmark]: RCFGBuilder took 332.41 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-04 12:21:48,757 INFO L168 Benchmark]: TraceAbstraction took 1992.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-10-04 12:21:48,761 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 0.19 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 38.64 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 17.16 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 332.41 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1992.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 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: 32]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: main_~i~4 <= 0 || (main_~i~4 <= 1000000 && __VERIFIER_assert_~cond == 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: __VERIFIER_assert_~cond == 1 && main_~i~4 <= 999999 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 1.9s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 8 SDtfs, 4 SDslu, 13 SDs, 0 SdLazy, 29 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 19 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 463 SizeOfPredicates, 6 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 1/16 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_variant.i_2.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_12-21-48-775.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_1_variant.i_2.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_12-21-48-775.csv Received shutdown request...