java -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/chccomp2018/chcToBoogie_automizer.epf -i /storage/chc-comp/vmt-chc-benchmarks/ctigar/fragtest_simple.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 13:21:13,701 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 13:21:13,703 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 13:21:13,715 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 13:21:13,716 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 13:21:13,717 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 13:21:13,720 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 13:21:13,722 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 13:21:13,724 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 13:21:13,724 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 13:21:13,725 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 13:21:13,725 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 13:21:13,726 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 13:21:13,727 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 13:21:13,728 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 13:21:13,729 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 13:21:13,731 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 13:21:13,733 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 13:21:13,734 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 13:21:13,735 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 13:21:13,737 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 13:21:13,739 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 13:21:13,739 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 13:21:13,739 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 13:21:13,740 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 13:21:13,741 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 13:21:13,742 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 13:21:13,743 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 13:21:13,744 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 13:21:13,744 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 13:21:13,745 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 13:21:13,746 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 13:21:13,746 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 13:21:13,747 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 13:21:13,747 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 13:21:13,748 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 13:21:13,761 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 13:21:13,761 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 13:21:13,762 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 13:21:13,762 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 13:21:13,763 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 13:21:13,763 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 13:21:13,764 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 13:21:13,764 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 13:21:13,764 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 13:21:13,765 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 13:21:13,765 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 13:21:13,765 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 13:21:13,765 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 13:21:13,766 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 13:21:13,766 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 13:21:13,766 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 13:21:13,766 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 13:21:13,768 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 13:21:13,768 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 13:21:13,814 INFO ]: Repository-Root is: /tmp [2018-06-18 13:21:13,833 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 13:21:13,838 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 13:21:13,840 INFO ]: Initializing SmtParser... [2018-06-18 13:21:13,840 INFO ]: SmtParser initialized [2018-06-18 13:21:13,841 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/fragtest_simple.c.smt2 [2018-06-18 13:21:13,842 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 [2018-06-18 13:21:13,933 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/fragtest_simple.c.smt2 unknown [2018-06-18 13:21:14,306 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/fragtest_simple.c.smt2 [2018-06-18 13:21:14,311 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 13:21:14,316 INFO ]: Walking toolchain with 4 elements. [2018-06-18 13:21:14,317 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 13:21:14,317 INFO ]: Initializing ChcToBoogie... [2018-06-18 13:21:14,317 INFO ]: ChcToBoogie initialized [2018-06-18 13:21:14,324 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 01:21:14" (1/1) ... [2018-06-18 13:21:14,418 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:21:14 Unit [2018-06-18 13:21:14,418 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 13:21:14,419 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 13:21:14,419 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 13:21:14,419 INFO ]: Boogie Preprocessor initialized [2018-06-18 13:21:14,436 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:21:14" (1/1) ... [2018-06-18 13:21:14,436 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:21:14" (1/1) ... [2018-06-18 13:21:14,446 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:21:14" (1/1) ... [2018-06-18 13:21:14,446 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:21:14" (1/1) ... [2018-06-18 13:21:14,453 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:21:14" (1/1) ... [2018-06-18 13:21:14,454 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:21:14" (1/1) ... [2018-06-18 13:21:14,456 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:21:14" (1/1) ... [2018-06-18 13:21:14,459 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 13:21:14,460 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 13:21:14,460 INFO ]: Initializing RCFGBuilder... [2018-06-18 13:21:14,460 INFO ]: RCFGBuilder initialized [2018-06-18 13:21:14,460 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:21:14" (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) [2018-06-18 13:21:14,476 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 13:21:14,476 INFO ]: Found specification of procedure False [2018-06-18 13:21:14,476 INFO ]: Found implementation of procedure False [2018-06-18 13:21:14,476 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 13:21:14,476 INFO ]: Found specification of procedure state [2018-06-18 13:21:14,476 INFO ]: Found implementation of procedure state [2018-06-18 13:21:14,476 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 13:21:14,476 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 13:21:14,477 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 [2018-06-18 13:21:14,656 INFO ]: Using library mode [2018-06-18 13:21:14,656 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 01:21:14 BoogieIcfgContainer [2018-06-18 13:21:14,656 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 13:21:14,658 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 13:21:14,658 INFO ]: Initializing TraceAbstraction... [2018-06-18 13:21:14,661 INFO ]: TraceAbstraction initialized [2018-06-18 13:21:14,661 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 01:21:14" (1/3) ... [2018-06-18 13:21:14,662 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f848eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 01:21:14, skipping insertion in model container [2018-06-18 13:21:14,662 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:21:14" (2/3) ... [2018-06-18 13:21:14,662 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f848eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 01:21:14, skipping insertion in model container [2018-06-18 13:21:14,663 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 01:21:14" (3/3) ... [2018-06-18 13:21:14,664 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 13:21:14,673 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 13:21:14,682 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 13:21:14,732 INFO ]: Using default assertion order modulation [2018-06-18 13:21:14,733 INFO ]: Interprodecural is true [2018-06-18 13:21:14,733 INFO ]: Hoare is false [2018-06-18 13:21:14,733 INFO ]: Compute interpolants for FPandBP [2018-06-18 13:21:14,733 INFO ]: Backedges is TWOTRACK [2018-06-18 13:21:14,733 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 13:21:14,733 INFO ]: Difference is false [2018-06-18 13:21:14,733 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 13:21:14,733 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 13:21:14,754 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 13:21:14,767 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 13:21:14,767 INFO ]: Found error trace [2018-06-18 13:21:14,768 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:21:14,768 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:21:14,775 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-18 13:21:14,777 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:21:14,778 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:21:14,823 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:21:14,823 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:21:14,823 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:21:14,851 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:21:14,858 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:21:14,980 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 13:21:14,982 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 13:21:14,983 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 13:21:14,984 INFO ]: Interpolant automaton has 4 states [2018-06-18 13:21:15,000 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 13:21:15,000 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 13:21:15,003 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 13:21:15,112 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:21:15,112 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 13:21:15,112 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 13:21:15,113 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 13:21:15,114 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:21:15,123 INFO ]: With dead ends: 13 [2018-06-18 13:21:15,123 INFO ]: Without dead ends: 13 [2018-06-18 13:21:15,124 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 13:21:15,138 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 13:21:15,158 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 13:21:15,160 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 13:21:15,160 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 13:21:15,162 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 13:21:15,162 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:21:15,162 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 13:21:15,162 INFO ]: Interpolant automaton has 4 states. [2018-06-18 13:21:15,162 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 13:21:15,165 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 13:21:15,165 INFO ]: Found error trace [2018-06-18 13:21:15,165 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:21:15,165 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:21:15,165 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-18 13:21:15,165 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:21:15,165 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:21:15,166 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:21:15,166 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:21:15,166 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:21:15,218 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:21:15,219 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:21:15,465 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 13:21:15,465 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:21:15,465 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 [2018-06-18 13:21:15,473 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:21:15,518 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:21:15,527 INFO ]: Computing forward predicates... [2018-06-18 13:21:15,768 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 13:21:15,802 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:21:15,802 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-06-18 13:21:15,803 INFO ]: Interpolant automaton has 6 states [2018-06-18 13:21:15,803 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-18 13:21:15,803 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-18 13:21:15,803 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 6 states. [2018-06-18 13:21:15,974 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:21:15,974 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 13:21:15,976 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 13:21:15,976 INFO ]: Start accepts. Automaton has 6 states. Word has length 13 [2018-06-18 13:21:15,976 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:21:15,977 INFO ]: With dead ends: 15 [2018-06-18 13:21:15,977 INFO ]: Without dead ends: 15 [2018-06-18 13:21:15,978 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-18 13:21:15,978 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 13:21:15,981 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 13:21:15,982 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 13:21:15,982 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 13:21:15,982 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 13:21:15,983 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:21:15,983 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 13:21:15,983 INFO ]: Interpolant automaton has 6 states. [2018-06-18 13:21:15,983 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 13:21:15,983 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 13:21:15,983 INFO ]: Found error trace [2018-06-18 13:21:15,983 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:21:15,983 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:21:15,984 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-18 13:21:15,984 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:21:15,984 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:21:15,984 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:21:15,985 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:21:15,985 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:21:16,078 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:21:16,078 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:21:16,436 WARN ]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-18 13:21:16,808 WARN ]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-06-18 13:21:16,960 WARN ]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-18 13:21:16,971 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 13:21:16,972 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:21:16,972 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 [2018-06-18 13:21:16,985 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 13:21:17,062 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 13:21:17,062 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:21:17,066 INFO ]: Computing forward predicates... [2018-06-18 13:21:17,172 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 13:21:17,192 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:21:17,192 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-06-18 13:21:17,192 INFO ]: Interpolant automaton has 8 states [2018-06-18 13:21:17,192 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-18 13:21:17,193 INFO ]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-06-18 13:21:17,193 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2018-06-18 13:21:17,437 WARN ]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-06-18 13:21:17,830 WARN ]: Spent 133.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 18 [2018-06-18 13:21:17,866 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:21:17,866 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-18 13:21:17,869 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-18 13:21:17,869 INFO ]: Start accepts. Automaton has 8 states. Word has length 17 [2018-06-18 13:21:17,869 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:21:17,870 INFO ]: With dead ends: 17 [2018-06-18 13:21:17,870 INFO ]: Without dead ends: 17 [2018-06-18 13:21:17,870 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-06-18 13:21:17,870 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-18 13:21:17,873 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-18 13:21:17,873 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-18 13:21:17,874 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-18 13:21:17,874 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-18 13:21:17,874 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:21:17,874 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-18 13:21:17,874 INFO ]: Interpolant automaton has 8 states. [2018-06-18 13:21:17,874 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-18 13:21:17,875 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-18 13:21:17,875 INFO ]: Found error trace [2018-06-18 13:21:17,875 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:21:17,875 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:21:17,875 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-18 13:21:17,875 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:21:17,875 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:21:17,876 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:21:17,876 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:21:17,876 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:21:17,920 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:21:17,921 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:21:18,218 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 13:21:18,219 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:21:18,219 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 [2018-06-18 13:21:18,228 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-18 13:21:18,304 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-18 13:21:18,304 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:21:18,309 INFO ]: Computing forward predicates... [2018-06-18 13:21:22,150 WARN ]: Spent 3.15 s on a formula simplification. DAG size of input: 361 DAG size of output: 77 [2018-06-18 13:21:25,957 WARN ]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-18 13:21:25,972 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 13:21:26,005 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:21:26,005 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2018-06-18 13:21:26,006 INFO ]: Interpolant automaton has 13 states [2018-06-18 13:21:26,006 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-18 13:21:26,006 INFO ]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-06-18 13:21:26,006 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 13 states. [2018-06-18 13:21:27,490 WARN ]: Spent 1.26 s on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-06-18 13:21:28,148 WARN ]: Spent 626.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 44 [2018-06-18 13:21:28,844 WARN ]: Spent 675.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2018-06-18 13:21:29,505 WARN ]: Spent 633.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 54 [2018-06-18 13:21:29,531 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:21:29,531 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-18 13:21:29,531 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-18 13:21:29,531 INFO ]: Start accepts. Automaton has 13 states. Word has length 21 [2018-06-18 13:21:29,531 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:21:29,532 INFO ]: With dead ends: 19 [2018-06-18 13:21:29,532 INFO ]: Without dead ends: 19 [2018-06-18 13:21:29,533 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-06-18 13:21:29,533 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-18 13:21:29,536 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-18 13:21:29,536 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-18 13:21:29,536 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-18 13:21:29,537 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-18 13:21:29,537 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:21:29,537 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-18 13:21:29,537 INFO ]: Interpolant automaton has 13 states. [2018-06-18 13:21:29,537 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-18 13:21:29,537 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-18 13:21:29,538 INFO ]: Found error trace [2018-06-18 13:21:29,538 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:21:29,538 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:21:29,538 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-18 13:21:29,538 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:21:29,538 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:21:29,539 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:21:29,539 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:21:29,539 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:21:29,590 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:21:29,591 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:21:30,154 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-18 13:21:30,154 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:21:30,154 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:21:30,165 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-18 13:21:30,207 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-18 13:21:30,207 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:21:30,211 INFO ]: Computing forward predicates... [2018-06-18 13:21:31,172 WARN ]: Spent 675.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 25 [2018-06-18 13:21:31,611 WARN ]: Spent 149.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 26 [2018-06-18 13:21:32,183 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-18 13:21:32,204 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:21:32,204 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2018-06-18 13:21:32,204 INFO ]: Interpolant automaton has 19 states [2018-06-18 13:21:32,204 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-18 13:21:32,205 INFO ]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2018-06-18 13:21:32,205 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 19 states. [2018-06-18 13:21:32,534 WARN ]: Spent 296.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2018-06-18 13:21:32,699 WARN ]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 22 [2018-06-18 13:21:32,901 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 34 [2018-06-18 13:21:33,147 WARN ]: Spent 225.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2018-06-18 13:21:33,461 WARN ]: Spent 291.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2018-06-18 13:21:33,486 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:21:33,486 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-18 13:21:33,489 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-18 13:21:33,489 INFO ]: Start accepts. Automaton has 19 states. Word has length 25 [2018-06-18 13:21:33,489 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:21:33,489 INFO ]: With dead ends: 21 [2018-06-18 13:21:33,490 INFO ]: Without dead ends: 21 [2018-06-18 13:21:33,490 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2018-06-18 13:21:33,490 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-18 13:21:33,493 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-18 13:21:33,493 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-18 13:21:33,493 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-18 13:21:33,493 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-18 13:21:33,494 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:21:33,494 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-18 13:21:33,494 INFO ]: Interpolant automaton has 19 states. [2018-06-18 13:21:33,494 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-18 13:21:33,494 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-18 13:21:33,495 INFO ]: Found error trace [2018-06-18 13:21:33,495 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:21:33,495 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:21:33,495 INFO ]: Analyzing trace with hash 1986427350, now seen corresponding path program 5 times [2018-06-18 13:21:33,495 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:21:33,495 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:21:33,496 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:21:33,496 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:21:33,496 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:21:33,587 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:21:33,588 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:21:33,850 WARN ]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-06-18 13:21:34,474 WARN ]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-06-18 13:21:34,752 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-18 13:21:34,752 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:21:34,753 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:21:34,759 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-18 13:21:34,827 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-18 13:21:34,827 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:21:34,832 INFO ]: Computing forward predicates... [2018-06-18 13:21:35,295 WARN ]: Spent 351.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 27 [2018-06-18 13:21:35,458 WARN ]: Spent 130.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2018-06-18 13:21:36,038 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-18 13:21:36,058 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:21:36,058 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 18 [2018-06-18 13:21:36,058 INFO ]: Interpolant automaton has 18 states [2018-06-18 13:21:36,058 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-18 13:21:36,059 INFO ]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2018-06-18 13:21:36,059 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 18 states. [2018-06-18 13:21:36,479 WARN ]: Spent 379.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-06-18 13:21:36,638 WARN ]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 26 [2018-06-18 13:21:36,859 WARN ]: Spent 174.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2018-06-18 13:21:37,096 WARN ]: Spent 207.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 36 [2018-06-18 13:21:37,376 WARN ]: Spent 253.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2018-06-18 13:21:37,758 WARN ]: Spent 357.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2018-06-18 13:21:37,789 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:21:37,789 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-18 13:21:37,789 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-18 13:21:37,789 INFO ]: Start accepts. Automaton has 18 states. Word has length 29 [2018-06-18 13:21:37,790 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:21:37,790 INFO ]: With dead ends: 23 [2018-06-18 13:21:37,790 INFO ]: Without dead ends: 23 [2018-06-18 13:21:37,791 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2018-06-18 13:21:37,791 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-18 13:21:37,795 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-18 13:21:37,795 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-18 13:21:37,796 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-18 13:21:37,796 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 29 [2018-06-18 13:21:37,796 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:21:37,796 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-18 13:21:37,796 INFO ]: Interpolant automaton has 18 states. [2018-06-18 13:21:37,796 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-18 13:21:37,797 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-18 13:21:37,797 INFO ]: Found error trace [2018-06-18 13:21:37,797 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:21:37,797 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:21:37,797 INFO ]: Analyzing trace with hash 800064122, now seen corresponding path program 6 times [2018-06-18 13:21:37,797 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:21:37,797 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:21:37,798 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:21:37,798 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:21:37,798 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:21:37,878 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:21:37,878 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:21:38,894 WARN ]: Spent 705.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2018-06-18 13:21:39,215 WARN ]: Spent 139.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2018-06-18 13:21:39,501 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-18 13:21:39,501 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:21:39,501 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:21:39,514 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-18 13:21:39,580 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-06-18 13:21:39,581 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:21:39,586 INFO ]: Computing forward predicates... [2018-06-18 13:21:42,478 WARN ]: Spent 2.63 s on a formula simplification. DAG size of input: 464 DAG size of output: 57 [2018-06-18 13:21:42,957 WARN ]: Spent 345.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2018-06-18 13:21:43,126 WARN ]: Spent 127.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2018-06-18 13:21:43,274 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 26 [2018-06-18 13:21:45,004 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-18 13:21:45,033 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:21:45,034 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 22 [2018-06-18 13:21:45,034 INFO ]: Interpolant automaton has 22 states [2018-06-18 13:21:45,034 INFO ]: Constructing interpolant automaton starting with 22 interpolants. [2018-06-18 13:21:45,034 INFO ]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2018-06-18 13:21:45,034 INFO ]: Start difference. First operand 23 states and 24 transitions. Second operand 22 states. [2018-06-18 13:21:45,900 WARN ]: Spent 810.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2018-06-18 13:21:46,256 WARN ]: Spent 183.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 23 [2018-06-18 13:21:46,505 WARN ]: Spent 213.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 28 [2018-06-18 13:21:46,768 WARN ]: Spent 235.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 35 [2018-06-18 13:21:47,099 WARN ]: Spent 295.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 36 [2018-06-18 13:21:47,648 WARN ]: Spent 499.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 48 [2018-06-18 13:21:48,277 WARN ]: Spent 601.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 53 [2018-06-18 13:21:48,311 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:21:48,311 INFO ]: Finished difference Result 25 states and 26 transitions. [2018-06-18 13:21:48,312 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-18 13:21:48,312 INFO ]: Start accepts. Automaton has 22 states. Word has length 33 [2018-06-18 13:21:48,312 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:21:48,313 INFO ]: With dead ends: 25 [2018-06-18 13:21:48,313 INFO ]: Without dead ends: 25 [2018-06-18 13:21:48,313 INFO ]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=173, Invalid=697, Unknown=0, NotChecked=0, Total=870 [2018-06-18 13:21:48,313 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-18 13:21:48,317 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-18 13:21:48,317 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-18 13:21:48,317 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-06-18 13:21:48,317 INFO ]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 33 [2018-06-18 13:21:48,318 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:21:48,318 INFO ]: Abstraction has 25 states and 26 transitions. [2018-06-18 13:21:48,318 INFO ]: Interpolant automaton has 22 states. [2018-06-18 13:21:48,318 INFO ]: Start isEmpty. Operand 25 states and 26 transitions. [2018-06-18 13:21:48,319 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-18 13:21:48,319 INFO ]: Found error trace [2018-06-18 13:21:48,319 INFO ]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:21:48,319 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:21:48,319 INFO ]: Analyzing trace with hash -411423458, now seen corresponding path program 7 times [2018-06-18 13:21:48,319 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:21:48,319 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:21:48,320 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:21:48,320 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:21:48,320 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:21:48,414 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:21:48,416 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:21:48,659 WARN ]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-06-18 13:21:48,980 WARN ]: Spent 142.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2018-06-18 13:21:50,147 WARN ]: Spent 997.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-06-18 13:21:50,304 WARN ]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-06-18 13:21:50,613 INFO ]: Checked inductivity of 105 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-18 13:21:50,613 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:21:50,613 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:21:50,619 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:21:50,684 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:21:50,691 INFO ]: Computing forward predicates... [2018-06-18 13:21:52,193 WARN ]: Spent 1.28 s on a formula simplification. DAG size of input: 181 DAG size of output: 55 [2018-06-18 13:21:53,406 WARN ]: Spent 919.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 56 [2018-06-18 13:21:59,822 WARN ]: Spent 5.96 s on a formula simplification. DAG size of input: 689 DAG size of output: 106 [2018-06-18 13:21:59,979 WARN ]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2018-06-18 13:22:03,448 INFO ]: Checked inductivity of 105 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-18 13:22:03,468 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:22:03,468 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 25 [2018-06-18 13:22:03,469 INFO ]: Interpolant automaton has 25 states [2018-06-18 13:22:03,469 INFO ]: Constructing interpolant automaton starting with 25 interpolants. [2018-06-18 13:22:03,469 INFO ]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2018-06-18 13:22:03,469 INFO ]: Start difference. First operand 25 states and 26 transitions. Second operand 25 states. [2018-06-18 13:22:05,137 WARN ]: Spent 1.59 s on a formula simplification. DAG size of input: 185 DAG size of output: 124 [2018-06-18 13:22:05,801 WARN ]: Spent 598.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 27 [2018-06-18 13:22:06,445 WARN ]: Spent 600.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 29 [2018-06-18 13:22:07,377 WARN ]: Spent 835.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 38 [2018-06-18 13:22:08,899 WARN ]: Spent 1.48 s on a formula simplification. DAG size of input: 183 DAG size of output: 110 [2018-06-18 13:22:10,461 WARN ]: Spent 1.51 s on a formula simplification. DAG size of input: 189 DAG size of output: 67 [2018-06-18 13:22:11,973 WARN ]: Spent 1.47 s on a formula simplification. DAG size of input: 187 DAG size of output: 114 [2018-06-18 13:22:13,653 WARN ]: Spent 1.61 s on a formula simplification. DAG size of input: 184 DAG size of output: 124 [2018-06-18 13:22:13,701 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:22:13,701 INFO ]: Finished difference Result 27 states and 28 transitions. [2018-06-18 13:22:13,701 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-18 13:22:13,701 INFO ]: Start accepts. Automaton has 25 states. Word has length 37 [2018-06-18 13:22:13,702 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:22:13,702 INFO ]: With dead ends: 27 [2018-06-18 13:22:13,702 INFO ]: Without dead ends: 27 [2018-06-18 13:22:13,703 INFO ]: 0 DeclaredPredicates, 63 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2018-06-18 13:22:13,703 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-18 13:22:13,706 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-18 13:22:13,706 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-18 13:22:13,709 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-06-18 13:22:13,709 INFO ]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 37 [2018-06-18 13:22:13,709 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:22:13,709 INFO ]: Abstraction has 27 states and 28 transitions. [2018-06-18 13:22:13,709 INFO ]: Interpolant automaton has 25 states. [2018-06-18 13:22:13,709 INFO ]: Start isEmpty. Operand 27 states and 28 transitions. [2018-06-18 13:22:13,710 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-18 13:22:13,710 INFO ]: Found error trace [2018-06-18 13:22:13,710 INFO ]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:22:13,710 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:22:13,711 INFO ]: Analyzing trace with hash -544278078, now seen corresponding path program 8 times [2018-06-18 13:22:13,711 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:22:13,711 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:22:13,711 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:22:13,711 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:22:13,711 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:22:13,805 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:22:13,805 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. Received shutdown request... [2018-06-18 13:22:13,832 FATAL]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:235) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$0(Interpolator.java:233) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:130) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:918) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:210) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:228) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:410) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:425) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:309) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:151) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:119) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-06-18 13:22:13,847 INFO ]: Toolchain (without parser) took 59534.76 ms. Allocated memory was 306.7 MB in the beginning and 836.2 MB in the end (delta: 529.5 MB). Free memory was 255.1 MB in the beginning and 696.1 MB in the end (delta: -441.0 MB). Peak memory consumption was 88.6 MB. Max. memory is 3.6 GB. [2018-06-18 13:22:13,847 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 13:22:13,848 INFO ]: ChcToBoogie took 102.03 ms. Allocated memory is still 306.7 MB. Free memory was 253.1 MB in the beginning and 249.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-18 13:22:13,848 INFO ]: Boogie Preprocessor took 39.78 ms. Allocated memory is still 306.7 MB. Free memory is still 249.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 13:22:13,848 INFO ]: RCFGBuilder took 196.84 ms. Allocated memory is still 306.7 MB. Free memory was 249.1 MB in the beginning and 237.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-18 13:22:13,849 INFO ]: TraceAbstraction took 59183.94 ms. Allocated memory was 306.7 MB in the beginning and 836.2 MB in the end (delta: 529.5 MB). Free memory was 237.1 MB in the beginning and 699.3 MB in the end (delta: -462.1 MB). Peak memory consumption was 67.4 MB. Max. memory is 3.6 GB. [2018-06-18 13:22:13,854 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 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 102.03 ms. Allocated memory is still 306.7 MB. Free memory was 253.1 MB in the beginning and 249.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 39.78 ms. Allocated memory is still 306.7 MB. Free memory is still 249.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 196.84 ms. Allocated memory is still 306.7 MB. Free memory was 249.1 MB in the beginning and 237.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 59183.94 ms. Allocated memory was 306.7 MB in the beginning and 836.2 MB in the end (delta: 529.5 MB). Free memory was 237.1 MB in the beginning and 699.3 MB in the end (delta: -462.1 MB). Peak memory consumption was 67.4 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:235) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/fragtest_simple.c.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_13-22-13-867.csv Completed graceful shutdown