java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_2_e2_704_e7_810.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 09:08:25,558 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 09:08:25,560 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 09:08:25,570 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 09:08:25,570 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 09:08:25,571 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 09:08:25,572 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 09:08:25,574 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 09:08:25,576 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 09:08:25,576 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 09:08:25,577 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 09:08:25,577 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 09:08:25,578 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 09:08:25,579 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 09:08:25,580 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 09:08:25,581 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 09:08:25,582 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 09:08:25,584 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 09:08:25,586 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 09:08:25,587 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 09:08:25,588 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 09:08:25,590 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 09:08:25,591 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 09:08:25,591 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 09:08:25,592 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 09:08:25,593 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 09:08:25,593 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 09:08:25,594 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 09:08:25,595 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 09:08:25,595 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 09:08:25,596 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 09:08:25,597 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 09:08:25,597 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 09:08:25,598 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 09:08:25,598 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 09:08:25,599 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 09:08:25,611 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 09:08:25,612 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 09:08:25,612 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 09:08:25,612 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 09:08:25,613 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 09:08:25,614 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 09:08:25,614 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 09:08:25,614 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 09:08:25,614 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:08:25,614 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 09:08:25,615 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 09:08:25,615 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 09:08:25,615 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 09:08:25,615 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 09:08:25,615 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 09:08:25,616 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 09:08:25,616 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 09:08:25,617 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 09:08:25,617 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 09:08:25,649 INFO ]: Repository-Root is: /tmp [2018-06-22 09:08:25,666 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 09:08:25,672 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 09:08:25,673 INFO ]: Initializing SmtParser... [2018-06-22 09:08:25,673 INFO ]: SmtParser initialized [2018-06-22 09:08:25,674 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_2_e2_704_e7_810.smt2 [2018-06-22 09:08:25,675 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 09:08:25,770 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_2_e2_704_e7_810.smt2 unknown [2018-06-22 09:08:26,229 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_2_e2_704_e7_810.smt2 [2018-06-22 09:08:26,233 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 09:08:26,243 INFO ]: Walking toolchain with 4 elements. [2018-06-22 09:08:26,243 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 09:08:26,244 INFO ]: Initializing ChcToBoogie... [2018-06-22 09:08:26,244 INFO ]: ChcToBoogie initialized [2018-06-22 09:08:26,247 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:08:26" (1/1) ... [2018-06-22 09:08:26,353 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:26 Unit [2018-06-22 09:08:26,353 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 09:08:26,354 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 09:08:26,354 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 09:08:26,354 INFO ]: Boogie Preprocessor initialized [2018-06-22 09:08:26,374 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:26" (1/1) ... [2018-06-22 09:08:26,374 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:26" (1/1) ... [2018-06-22 09:08:26,388 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:26" (1/1) ... [2018-06-22 09:08:26,388 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:26" (1/1) ... [2018-06-22 09:08:26,394 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:26" (1/1) ... [2018-06-22 09:08:26,396 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:26" (1/1) ... [2018-06-22 09:08:26,398 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:26" (1/1) ... [2018-06-22 09:08:26,403 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 09:08:26,403 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 09:08:26,403 INFO ]: Initializing RCFGBuilder... [2018-06-22 09:08:26,403 INFO ]: RCFGBuilder initialized [2018-06-22 09:08:26,404 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:26" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 09:08:26,423 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 09:08:26,423 INFO ]: Found specification of procedure gotoProc [2018-06-22 09:08:26,423 INFO ]: Found implementation of procedure gotoProc [2018-06-22 09:08:26,423 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 09:08:26,423 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 09:08:26,423 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:08:26,808 INFO ]: Using library mode [2018-06-22 09:08:26,808 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:08:26 BoogieIcfgContainer [2018-06-22 09:08:26,809 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 09:08:26,810 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 09:08:26,810 INFO ]: Initializing TraceAbstraction... [2018-06-22 09:08:26,817 INFO ]: TraceAbstraction initialized [2018-06-22 09:08:26,817 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:08:26" (1/3) ... [2018-06-22 09:08:26,818 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54802db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 09:08:26, skipping insertion in model container [2018-06-22 09:08:26,818 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:26" (2/3) ... [2018-06-22 09:08:26,818 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54802db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 09:08:26, skipping insertion in model container [2018-06-22 09:08:26,818 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:08:26" (3/3) ... [2018-06-22 09:08:26,820 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 09:08:26,829 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 09:08:26,839 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 09:08:26,895 INFO ]: Using default assertion order modulation [2018-06-22 09:08:26,895 INFO ]: Interprodecural is true [2018-06-22 09:08:26,895 INFO ]: Hoare is false [2018-06-22 09:08:26,895 INFO ]: Compute interpolants for FPandBP [2018-06-22 09:08:26,895 INFO ]: Backedges is TWOTRACK [2018-06-22 09:08:26,895 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 09:08:26,895 INFO ]: Difference is false [2018-06-22 09:08:26,895 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 09:08:26,896 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 09:08:26,916 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 09:08:26,931 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 09:08:26,931 INFO ]: Found error trace [2018-06-22 09:08:26,932 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:08:26,932 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:08:26,936 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 09:08:26,937 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:08:26,937 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:08:26,968 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:26,968 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:08:26,968 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:27,062 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:08:27,213 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:08:27,216 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 09:08:27,216 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 09:08:27,217 INFO ]: Interpolant automaton has 3 states [2018-06-22 09:08:27,228 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 09:08:27,228 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:08:27,230 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 09:08:27,305 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:08:27,305 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 09:08:27,306 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 09:08:27,307 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 09:08:27,307 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:08:27,319 INFO ]: With dead ends: 9 [2018-06-22 09:08:27,319 INFO ]: Without dead ends: 9 [2018-06-22 09:08:27,321 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:08:27,340 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 09:08:27,360 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 09:08:27,361 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 09:08:27,365 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 09:08:27,366 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 09:08:27,366 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:08:27,366 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 09:08:27,366 INFO ]: Interpolant automaton has 3 states. [2018-06-22 09:08:27,366 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 09:08:27,367 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 09:08:27,367 INFO ]: Found error trace [2018-06-22 09:08:27,367 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:08:27,367 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:08:27,367 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 09:08:27,367 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:08:27,367 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:08:27,368 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:27,368 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:08:27,368 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:27,525 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:08:27,801 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:08:27,801 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:08:27,801 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-06-22 09:08:27,808 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:08:27,945 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:08:27,957 INFO ]: Computing forward predicates... [2018-06-22 09:08:28,064 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:08:28,094 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:08:28,095 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 09:08:28,095 INFO ]: Interpolant automaton has 6 states [2018-06-22 09:08:28,095 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 09:08:28,095 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 09:08:28,095 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 09:08:28,276 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:08:28,276 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 09:08:28,276 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 09:08:28,276 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 09:08:28,276 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:08:28,277 INFO ]: With dead ends: 11 [2018-06-22 09:08:28,277 INFO ]: Without dead ends: 11 [2018-06-22 09:08:28,277 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 09:08:28,277 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 09:08:28,278 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 09:08:28,278 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 09:08:28,279 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 09:08:28,279 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 09:08:28,279 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:08:28,279 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 09:08:28,279 INFO ]: Interpolant automaton has 6 states. [2018-06-22 09:08:28,279 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 09:08:28,279 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 09:08:28,279 INFO ]: Found error trace [2018-06-22 09:08:28,279 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:08:28,279 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:08:28,280 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-22 09:08:28,280 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:08:28,280 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:08:28,282 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:28,282 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:08:28,282 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:28,498 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:08:29,266 WARN ]: Spent 442.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 29 [2018-06-22 09:08:29,624 WARN ]: Spent 311.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2018-06-22 09:08:29,934 WARN ]: Spent 201.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 18 [2018-06-22 09:08:29,936 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:08:29,936 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:08:29,936 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-06-22 09:08:29,943 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 09:08:30,127 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 09:08:30,127 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:08:30,136 INFO ]: Computing forward predicates... [2018-06-22 09:08:30,751 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:08:30,772 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:08:30,772 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 09:08:30,772 INFO ]: Interpolant automaton has 10 states [2018-06-22 09:08:30,772 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 09:08:30,772 INFO ]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-22 09:08:30,772 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 09:08:30,977 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:08:30,977 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 09:08:30,978 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 09:08:30,978 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 09:08:30,978 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:08:30,978 INFO ]: With dead ends: 13 [2018-06-22 09:08:30,978 INFO ]: Without dead ends: 13 [2018-06-22 09:08:30,979 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-06-22 09:08:30,979 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 09:08:30,980 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 09:08:30,980 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 09:08:30,980 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 09:08:30,981 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 09:08:30,981 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:08:30,981 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 09:08:30,981 INFO ]: Interpolant automaton has 10 states. [2018-06-22 09:08:30,981 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 09:08:30,981 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 09:08:30,981 INFO ]: Found error trace [2018-06-22 09:08:30,981 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:08:30,981 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:08:30,981 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 3 times [2018-06-22 09:08:30,981 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:08:30,981 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:08:30,982 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:30,982 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:08:30,982 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:31,298 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:08:33,600 WARN ]: Spent 1.34 s on a formula simplification. DAG size of input: 435 DAG size of output: 28 [2018-06-22 09:08:35,358 WARN ]: Spent 1.56 s on a formula simplification. DAG size of input: 606 DAG size of output: 32 [2018-06-22 09:08:37,404 WARN ]: Spent 1.83 s on a formula simplification. DAG size of input: 704 DAG size of output: 32 [2018-06-22 09:08:40,116 WARN ]: Spent 2.44 s on a formula simplification. DAG size of input: 591 DAG size of output: 40 [2018-06-22 09:08:40,155 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:08:40,155 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:08:40,156 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 09:08:40,168 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 09:08:40,424 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 09:08:40,424 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:08:40,433 INFO ]: Computing forward predicates... [2018-06-22 09:08:40,740 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:08:40,761 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:08:40,761 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 09:08:40,761 INFO ]: Interpolant automaton has 14 states [2018-06-22 09:08:40,761 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 09:08:40,762 INFO ]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2018-06-22 09:08:40,762 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-22 09:08:40,886 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2018-06-22 09:08:41,172 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:08:41,172 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-22 09:08:41,173 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 09:08:41,173 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-22 09:08:41,173 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:08:41,173 INFO ]: With dead ends: 15 [2018-06-22 09:08:41,173 INFO ]: Without dead ends: 15 [2018-06-22 09:08:41,173 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2018-06-22 09:08:41,173 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 09:08:41,175 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 09:08:41,175 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 09:08:41,175 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-22 09:08:41,175 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-06-22 09:08:41,175 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:08:41,175 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-22 09:08:41,175 INFO ]: Interpolant automaton has 14 states. [2018-06-22 09:08:41,175 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-22 09:08:41,176 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-22 09:08:41,176 INFO ]: Found error trace [2018-06-22 09:08:41,176 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:08:41,176 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:08:41,176 INFO ]: Analyzing trace with hash 726730004, now seen corresponding path program 4 times [2018-06-22 09:08:41,176 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:08:41,176 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:08:41,177 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:41,177 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:08:41,177 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:43,210 INFO ]: Conjunction of SSA is unsat Received shutdown request... [2018-06-22 09:09:30,547 WARN ]: Removed 2 from assertion stack [2018-06-22 09:09:30,547 WARN ]: Verification canceled [2018-06-22 09:09:30,551 WARN ]: Timeout [2018-06-22 09:09:30,551 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:09:30 BoogieIcfgContainer [2018-06-22 09:09:30,551 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 09:09:30,552 INFO ]: Toolchain (without parser) took 64318.35 ms. Allocated memory was 308.8 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 250.4 MB in the beginning and 879.7 MB in the end (delta: -629.4 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 09:09:30,557 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 09:09:30,558 INFO ]: ChcToBoogie took 109.75 ms. Allocated memory is still 308.8 MB. Free memory was 250.4 MB in the beginning and 247.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:09:30,558 INFO ]: Boogie Preprocessor took 49.23 ms. Allocated memory is still 308.8 MB. Free memory was 247.4 MB in the beginning and 246.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 09:09:30,558 INFO ]: RCFGBuilder took 405.16 ms. Allocated memory is still 308.8 MB. Free memory was 246.4 MB in the beginning and 214.9 MB in the end (delta: 31.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 3.6 GB. [2018-06-22 09:09:30,559 INFO ]: TraceAbstraction took 63741.06 ms. Allocated memory was 308.8 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 214.9 MB in the beginning and 879.7 MB in the end (delta: -664.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 09:09:30,561 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 109.75 ms. Allocated memory is still 308.8 MB. Free memory was 250.4 MB in the beginning and 247.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 49.23 ms. Allocated memory is still 308.8 MB. Free memory was 247.4 MB in the beginning and 246.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 405.16 ms. Allocated memory is still 308.8 MB. Free memory was 246.4 MB in the beginning and 214.9 MB in the end (delta: 31.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 3.6 GB. * TraceAbstraction took 63741.06 ms. Allocated memory was 308.8 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 214.9 MB in the beginning and 879.7 MB in the end (delta: -664.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 15 with TraceHistMax 7, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 2837. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 63.6s OverallTime, 5 OverallIterations, 7 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 110 SDs, 0 SdLazy, 74 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=4, 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: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 11.7s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 5088 SizeOfPredicates, 12 NumberOfNonLiveVariables, 2895 ConjunctsInSsa, 170 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/44 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_2_e2_704_e7_810.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_09-09-30-584.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_2_e2_704_e7_810.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_09-09-30-584.csv Completed graceful shutdown