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/phases1.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-9f4048f [2018-10-04 12:27:46,264 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 12:27:46,266 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 12:27:46,280 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 12:27:46,280 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 12:27:46,281 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 12:27:46,282 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 12:27:46,284 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 12:27:46,286 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 12:27:46,287 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 12:27:46,287 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-04 12:27:46,312 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 12:27:46,344 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 12:27:46,345 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 12:27:46,346 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 12:27:46,346 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 12:27:46,346 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 12:27:46,347 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 12:27:46,349 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 12:27:46,350 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 12:27:46,350 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 12:27:46,350 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 12:27:46,350 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 12:27:46,350 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 12:27:46,351 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 12:27:46,351 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 12:27:46,351 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 12:27:46,351 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 12:27:46,351 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 12:27:46,351 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 12:27:46,352 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 12:27:46,352 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 12:27:46,352 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 12:27:46,352 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 12:27:46,352 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 12:27:46,353 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 12:27:46,353 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 12:27:46,353 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 12:27:46,353 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 12:27:46,354 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 12:27:46,354 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 12:27:46,354 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 12:27:46,402 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 12:27:46,420 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 12:27:46,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 12:27:46,429 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 12:27:46,429 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 12:27:46,430 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/phases1.i_3.bpl [2018-10-04 12:27:46,431 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/phases1.i_3.bpl' [2018-10-04 12:27:46,490 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 12:27:46,492 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 12:27:46,493 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 12:27:46,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 12:27:46,493 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 12:27:46,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "phases1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:27:46" (1/1) ... [2018-10-04 12:27:46,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "phases1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:27:46" (1/1) ... [2018-10-04 12:27:46,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 12:27:46,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 12:27:46,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 12:27:46,538 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 12:27:46,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "phases1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:27:46" (1/1) ... [2018-10-04 12:27:46,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "phases1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:27:46" (1/1) ... [2018-10-04 12:27:46,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "phases1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:27:46" (1/1) ... [2018-10-04 12:27:46,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "phases1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:27:46" (1/1) ... [2018-10-04 12:27:46,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "phases1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:27:46" (1/1) ... [2018-10-04 12:27:46,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "phases1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:27:46" (1/1) ... [2018-10-04 12:27:46,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "phases1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:27:46" (1/1) ... [2018-10-04 12:27:46,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 12:27:46,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 12:27:46,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 12:27:46,564 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 12:27:46,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "phases1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:27:46" (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 12:27:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 12:27:46,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 12:27:46,829 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 12:27:46,830 INFO L202 PluginConnector]: Adding new model phases1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:27:46 BoogieIcfgContainer [2018-10-04 12:27:46,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 12:27:46,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 12:27:46,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 12:27:46,834 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 12:27:46,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "phases1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:27:46" (1/2) ... [2018-10-04 12:27:46,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb839a5 and model type phases1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 12:27:46, skipping insertion in model container [2018-10-04 12:27:46,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "phases1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:27:46" (2/2) ... [2018-10-04 12:27:46,838 INFO L112 eAbstractionObserver]: Analyzing ICFG phases1.i_3.bpl [2018-10-04 12:27:46,848 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 12:27:46,856 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 12:27:46,905 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 12:27:46,906 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 12:27:46,906 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 12:27:46,906 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 12:27:46,906 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 12:27:46,906 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 12:27:46,907 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 12:27:46,907 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 12:27:46,907 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 12:27:46,924 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-04 12:27:46,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 12:27:46,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:27:46,936 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 12:27:46,941 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:27:46,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:27:46,951 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-04 12:27:46,953 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:27:46,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:27:47,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:27:47,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:27:47,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:27:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:27:47,148 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 12:27:47,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 12:27:47,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 12:27:47,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 12:27:47,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 12:27:47,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-04 12:27:47,171 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-04 12:27:47,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:27:47,219 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-10-04 12:27:47,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 12:27:47,222 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-04 12:27:47,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:27:47,232 INFO L225 Difference]: With dead ends: 11 [2018-10-04 12:27:47,232 INFO L226 Difference]: Without dead ends: 7 [2018-10-04 12:27:47,236 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 [2018-10-04 12:27:47,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-04 12:27:47,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-04 12:27:47,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-04 12:27:47,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-04 12:27:47,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-10-04 12:27:47,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:27:47,273 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-04 12:27:47,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 12:27:47,274 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-04 12:27:47,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 12:27:47,274 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:27:47,274 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-10-04 12:27:47,275 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:27:47,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:27:47,275 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-10-04 12:27:47,275 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:27:47,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:27:47,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:27:47,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:27:47,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:27:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:27:47,501 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 12:27:47,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:27:47,501 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 12:27:47,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:27:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:27:47,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:27:47,590 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 12:27:47,612 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:27:47,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-04 12:27:47,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 12:27:47,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 12:27:47,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-04 12:27:47,614 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-10-04 12:27:47,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:27:47,675 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-04 12:27:47,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 12:27:47,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-10-04 12:27:47,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:27:47,676 INFO L225 Difference]: With dead ends: 11 [2018-10-04 12:27:47,676 INFO L226 Difference]: Without dead ends: 9 [2018-10-04 12:27:47,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-04 12:27:47,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-04 12:27:47,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-04 12:27:47,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 12:27:47,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-04 12:27:47,681 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-10-04 12:27:47,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:27:47,681 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-04 12:27:47,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 12:27:47,682 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-04 12:27:47,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 12:27:47,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:27:47,682 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-10-04 12:27:47,683 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:27:47,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:27:47,683 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-10-04 12:27:47,683 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:27:47,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:27:47,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:27:47,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:27:47,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:27:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:27:47,830 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 12:27:47,830 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:27:47,830 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 12:27:47,839 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:27:47,850 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:27:47,850 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:27:47,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:27:47,876 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 12:27:47,897 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:27:47,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-04 12:27:47,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 12:27:47,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 12:27:47,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-04 12:27:47,898 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-10-04 12:27:47,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:27:47,940 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 12:27:47,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 12:27:47,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-10-04 12:27:47,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:27:47,941 INFO L225 Difference]: With dead ends: 13 [2018-10-04 12:27:47,941 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 12:27:47,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-04 12:27:47,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 12:27:47,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 12:27:47,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 12:27:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 12:27:47,946 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-10-04 12:27:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:27:47,946 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 12:27:47,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 12:27:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 12:27:47,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 12:27:47,947 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:27:47,948 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-10-04 12:27:47,948 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:27:47,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:27:47,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-10-04 12:27:47,949 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:27:47,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:27:47,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:27:47,950 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:27:47,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:27:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:27:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:27:48,315 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:27:48,316 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 [2018-10-04 12:27:48,332 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:27:48,371 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-10-04 12:27:48,371 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:27:48,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:27:48,455 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-04 12:27:48,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:27:48,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-04 12:27:48,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 12:27:48,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 12:27:48,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-04 12:27:48,481 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-10-04 12:27:48,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:27:48,543 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-10-04 12:27:48,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 12:27:48,544 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-10-04 12:27:48,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:27:48,545 INFO L225 Difference]: With dead ends: 13 [2018-10-04 12:27:48,546 INFO L226 Difference]: Without dead ends: 0 [2018-10-04 12:27:48,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-04 12:27:48,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-04 12:27:48,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-04 12:27:48,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-04 12:27:48,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-04 12:27:48,548 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-10-04 12:27:48,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:27:48,548 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-04 12:27:48,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 12:27:48,549 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-04 12:27:48,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-04 12:27:48,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-04 12:27:48,679 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 35) no Hoare annotation was computed. [2018-10-04 12:27:48,680 INFO L421 ceAbstractionStarter]: At program point L32(lines 12 32) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~x~4 0) (<= 0 ULTIMATE.start_main_~x~4)) (< (mod (+ ULTIMATE.start_main_~x~4 4294967295) 4294967296) 65521)) [2018-10-04 12:27:48,680 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 35) no Hoare annotation was computed. [2018-10-04 12:27:48,680 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 35) no Hoare annotation was computed. [2018-10-04 12:27:48,680 INFO L421 ceAbstractionStarter]: At program point L25(lines 25 33) the Hoare annotation is: false [2018-10-04 12:27:48,681 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 34) no Hoare annotation was computed. [2018-10-04 12:27:48,681 INFO L421 ceAbstractionStarter]: At program point L15(lines 15 26) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~x~4 0) (<= 0 ULTIMATE.start_main_~x~4)) (< (mod (+ ULTIMATE.start_main_~x~4 4294967295) 4294967296) 65521)) [2018-10-04 12:27:48,691 INFO L202 PluginConnector]: Adding new model phases1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 12:27:48 BoogieIcfgContainer [2018-10-04 12:27:48,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 12:27:48,693 INFO L168 Benchmark]: Toolchain (without parser) took 2201.90 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: 108.4 MB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. [2018-10-04 12:27:48,695 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 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. [2018-10-04 12:27:48,695 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.68 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 12:27:48,696 INFO L168 Benchmark]: Boogie Preprocessor took 25.27 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 12:27:48,697 INFO L168 Benchmark]: RCFGBuilder took 266.66 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 12:27:48,698 INFO L168 Benchmark]: TraceAbstraction took 1860.97 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: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-10-04 12:27:48,702 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 0.24 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. * Boogie Procedure Inliner took 44.68 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 25.27 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 266.66 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 1860.97 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: 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: 15]: Loop Invariant Derived loop invariant: (main_~x~4 <= 0 && 0 <= main_~x~4) || (main_~x~4 + 4294967295) % 4294967296 < 65521 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: (main_~x~4 <= 0 && 0 <= main_~x~4) || (main_~x~4 + 4294967295) % 4294967296 < 65521 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: false - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 1.7s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 25 SDs, 0 SdLazy, 44 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s 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, 31 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 52 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1639 SizeOfPredicates, 3 NumberOfNonLiveVariables, 59 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/phases1.i_3.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_12-27-48-717.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/phases1.i_3.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_12-27-48-717.csv Received shutdown request...