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/half.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d19836b [2018-09-26 21:21:41,073 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 21:21:41,075 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 21:21:41,087 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 21:21:41,087 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 21:21:41,089 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 21:21:41,090 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 21:21:41,092 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 21:21:41,093 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 21:21:41,094 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 21:21:41,095 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 21:21:41,095 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 21:21:41,096 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 21:21:41,097 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 21:21:41,099 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 21:21:41,099 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 21:21:41,100 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 21:21:41,102 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 21:21:41,104 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 21:21:41,109 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 21:21:41,110 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 21:21:41,111 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 21:21:41,115 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-26 21:21:41,130 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 [2018-09-26 21:21:41,156 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 21:21:41,156 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 21:21:41,158 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-26 21:21:41,158 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-26 21:21:41,159 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-26 21:21:41,159 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-26 21:21:41,159 INFO L133 SettingsManager]: * Use SBE=true [2018-09-26 21:21:41,160 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-26 21:21:41,160 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-26 21:21:41,161 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-26 21:21:41,161 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-26 21:21:41,161 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-26 21:21:41,161 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-26 21:21:41,161 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-26 21:21:41,162 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-26 21:21:41,162 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-26 21:21:41,162 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-26 21:21:41,162 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-26 21:21:41,162 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-26 21:21:41,162 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-26 21:21:41,163 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-26 21:21:41,163 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-26 21:21:41,163 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-26 21:21:41,163 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 21:21:41,163 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-26 21:21:41,164 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-26 21:21:41,164 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-26 21:21:41,164 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 21:21:41,164 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-26 21:21:41,164 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 21:21:41,215 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 21:21:41,229 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 21:21:41,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 21:21:41,236 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 21:21:41,237 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 21:21:41,238 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/half.i_3.bpl [2018-09-26 21:21:41,238 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/half.i_3.bpl' [2018-09-26 21:21:41,295 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 21:21:41,299 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 21:21:41,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 21:21:41,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 21:21:41,301 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 21:21:41,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:41" (1/1) ... [2018-09-26 21:21:41,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:41" (1/1) ... [2018-09-26 21:21:41,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 21:21:41,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 21:21:41,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 21:21:41,341 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 21:21:41,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:41" (1/1) ... [2018-09-26 21:21:41,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:41" (1/1) ... [2018-09-26 21:21:41,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:41" (1/1) ... [2018-09-26 21:21:41,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:41" (1/1) ... [2018-09-26 21:21:41,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:41" (1/1) ... [2018-09-26 21:21:41,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:41" (1/1) ... [2018-09-26 21:21:41,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:41" (1/1) ... [2018-09-26 21:21:41,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 21:21:41,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 21:21:41,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 21:21:41,362 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 21:21:41,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:41" (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 [2018-09-26 21:21:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-26 21:21:41,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-26 21:21:41,687 INFO L346 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-26 21:21:41,687 INFO L202 PluginConnector]: Adding new model half.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:21:41 BoogieIcfgContainer [2018-09-26 21:21:41,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 21:21:41,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 21:21:41,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 21:21:41,694 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 21:21:41,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:41" (1/2) ... [2018-09-26 21:21:41,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327d096a and model type half.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:21:41, skipping insertion in model container [2018-09-26 21:21:41,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:21:41" (2/2) ... [2018-09-26 21:21:41,698 INFO L112 eAbstractionObserver]: Analyzing ICFG half.i_3.bpl [2018-09-26 21:21:41,709 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-26 21:21:41,719 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 21:21:41,778 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 21:21:41,779 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 21:21:41,779 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 21:21:41,779 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-26 21:21:41,780 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 21:21:41,780 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 21:21:41,780 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 21:21:41,780 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 21:21:41,780 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 21:21:41,798 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-09-26 21:21:41,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 21:21:41,807 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:21:41,808 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 21:21:41,810 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:21:41,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 21:21:41,817 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-09-26 21:21:41,819 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:21:41,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:21:41,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:21:41,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:21:41,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:21:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:21:42,303 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-09-26 21:21:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:21:42,309 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:21:42,309 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 21:21:42,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:21:42,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:21:42,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-26 21:21:42,330 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-09-26 21:21:42,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:21:42,356 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-09-26 21:21:42,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:21:42,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-09-26 21:21:42,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:21:42,368 INFO L225 Difference]: With dead ends: 11 [2018-09-26 21:21:42,369 INFO L226 Difference]: Without dead ends: 7 [2018-09-26 21:21:42,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-26 21:21:42,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-26 21:21:42,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-26 21:21:42,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-26 21:21:42,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-26 21:21:42,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-09-26 21:21:42,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:21:42,411 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-26 21:21:42,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:21:42,414 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-26 21:21:42,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-26 21:21:42,414 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:21:42,414 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-09-26 21:21:42,415 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:21:42,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 21:21:42,415 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-09-26 21:21:42,416 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:21:42,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:21:42,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:21:42,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:21:42,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:21:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:21:42,770 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2018-09-26 21:21:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:21:42,772 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:21:42,772 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 [2018-09-26 21:21:42,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:21:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:21:42,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:21:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:21:42,932 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:21:42,933 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2018-09-26 21:21:42,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 21:21:42,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 21:21:42,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-09-26 21:21:42,935 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-09-26 21:21:43,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:21:43,109 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-09-26 21:21:43,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-26 21:21:43,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-09-26 21:21:43,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:21:43,111 INFO L225 Difference]: With dead ends: 9 [2018-09-26 21:21:43,111 INFO L226 Difference]: Without dead ends: 0 [2018-09-26 21:21:43,112 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-26 21:21:43,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-26 21:21:43,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-26 21:21:43,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-26 21:21:43,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-26 21:21:43,114 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-09-26 21:21:43,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:21:43,114 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-26 21:21:43,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 21:21:43,114 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-26 21:21:43,115 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-26 21:21:43,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-26 21:21:43,346 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 14 [2018-09-26 21:21:43,349 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 48) no Hoare annotation was computed. [2018-09-26 21:21:43,350 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 48) no Hoare annotation was computed. [2018-09-26 21:21:43,350 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 48) no Hoare annotation was computed. [2018-09-26 21:21:43,350 INFO L422 ceAbstractionStarter]: At program point L25(lines 25 36) the Hoare annotation is: (or (and (< 0 (* 2 ULTIMATE.start_main_~k~5)) (<= ULTIMATE.start_main_~i~5 1)) (and (= ULTIMATE.start_main_~i~5 0) (= ULTIMATE.start_main_~n~5 0))) [2018-09-26 21:21:43,351 INFO L422 ceAbstractionStarter]: At program point L45(lines 22 45) the Hoare annotation is: (or (and (< 0 (* 2 ULTIMATE.start_main_~k~5)) (<= ULTIMATE.start_main_~i~5 1)) (and (= ULTIMATE.start_main_~i~5 0) (= ULTIMATE.start_main_~n~5 0))) [2018-09-26 21:21:43,351 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 47) no Hoare annotation was computed. [2018-09-26 21:21:43,351 INFO L422 ceAbstractionStarter]: At program point L35(lines 35 46) the Hoare annotation is: false [2018-09-26 21:21:43,366 INFO L202 PluginConnector]: Adding new model half.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.09 09:21:43 BoogieIcfgContainer [2018-09-26 21:21:43,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-26 21:21:43,367 INFO L168 Benchmark]: Toolchain (without parser) took 2071.15 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: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. [2018-09-26 21:21:43,369 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 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. [2018-09-26 21:21:43,370 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.25 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. [2018-09-26 21:21:43,370 INFO L168 Benchmark]: Boogie Preprocessor took 20.24 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. [2018-09-26 21:21:43,371 INFO L168 Benchmark]: RCFGBuilder took 326.89 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. [2018-09-26 21:21:43,373 INFO L168 Benchmark]: TraceAbstraction took 1676.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-09-26 21:21:43,378 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 0.21 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 40.25 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 20.24 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 326.89 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 1676.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: 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: 22]: Loop Invariant Derived loop invariant: (0 < 2 * main_~k~5 && main_~i~5 <= 1) || (main_~i~5 == 0 && main_~n~5 == 0) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (0 < 2 * main_~k~5 && main_~i~5 <= 1) || (main_~i~5 == 0 && main_~n~5 == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 7 SDtfs, 0 SDslu, 7 SDs, 0 SdLazy, 12 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 35 HoareAnnotationTreeSize, 3 FomulaSimplifications, 38 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 36 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 507 SizeOfPredicates, 3 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 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/half.i_3.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-26_21-21-43-398.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/half.i_3.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-26_21-21-43-398.csv Received shutdown request...