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/cav12/toy.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:56:25,810 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:56:25,812 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:56:25,826 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:56:25,826 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:56:25,828 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:56:25,829 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:56:25,831 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:56:25,832 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:56:25,833 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:56:25,834 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:56:25,834 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:56:25,835 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:56:25,836 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:56:25,836 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:56:25,837 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:56:25,839 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:56:25,840 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:56:25,843 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:56:25,844 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:56:25,845 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:56:25,847 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:56:25,847 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:56:25,848 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:56:25,848 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:56:25,849 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:56:25,850 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:56:25,851 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:56:25,852 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:56:25,852 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:56:25,852 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:56:25,853 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:56:25,853 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:56:25,854 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:56:25,855 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:56:25,860 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:56:25,872 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:56:25,873 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:56:25,873 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:56:25,874 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:56:25,875 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:56:25,876 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:56:25,877 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:56:25,877 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:56:25,877 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:56:25,877 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:56:25,877 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:56:25,878 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:56:25,878 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:56:25,878 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:56:25,878 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:56:25,878 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:56:25,879 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:56:25,881 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:56:25,881 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:56:25,934 INFO ]: Repository-Root is: /tmp [2018-06-22 04:56:25,948 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:56:25,954 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:56:25,955 INFO ]: Initializing SmtParser... [2018-06-22 04:56:25,955 INFO ]: SmtParser initialized [2018-06-22 04:56:25,956 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/toy.smt2 [2018-06-22 04:56:25,957 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 04:56:26,054 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/toy.smt2 unknown [2018-06-22 04:56:26,653 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/toy.smt2 [2018-06-22 04:56:26,657 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:56:26,663 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:56:26,664 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:56:26,664 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:56:26,664 INFO ]: ChcToBoogie initialized [2018-06-22 04:56:26,667 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:56:26" (1/1) ... [2018-06-22 04:56:26,742 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:26 Unit [2018-06-22 04:56:26,742 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:56:26,742 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:56:26,742 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:56:26,742 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:56:26,762 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:26" (1/1) ... [2018-06-22 04:56:26,762 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:26" (1/1) ... [2018-06-22 04:56:26,783 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:26" (1/1) ... [2018-06-22 04:56:26,783 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:26" (1/1) ... [2018-06-22 04:56:26,802 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:26" (1/1) ... [2018-06-22 04:56:26,803 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:26" (1/1) ... [2018-06-22 04:56:26,807 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:26" (1/1) ... [2018-06-22 04:56:26,812 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:56:26,812 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:56:26,812 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:56:26,812 INFO ]: RCFGBuilder initialized [2018-06-22 04:56:26,813 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:26" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:56:26,838 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:56:26,838 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:56:26,838 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:56:26,838 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:56:26,838 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:56:26,838 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 04:56:27,279 INFO ]: Using library mode [2018-06-22 04:56:27,279 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:56:27 BoogieIcfgContainer [2018-06-22 04:56:27,279 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:56:27,290 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:56:27,290 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:56:27,293 INFO ]: TraceAbstraction initialized [2018-06-22 04:56:27,294 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:56:26" (1/3) ... [2018-06-22 04:56:27,295 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f02712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:56:27, skipping insertion in model container [2018-06-22 04:56:27,295 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:26" (2/3) ... [2018-06-22 04:56:27,295 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f02712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:56:27, skipping insertion in model container [2018-06-22 04:56:27,295 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:56:27" (3/3) ... [2018-06-22 04:56:27,297 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:56:27,307 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:56:27,318 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:56:27,359 INFO ]: Using default assertion order modulation [2018-06-22 04:56:27,359 INFO ]: Interprodecural is true [2018-06-22 04:56:27,359 INFO ]: Hoare is false [2018-06-22 04:56:27,359 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:56:27,359 INFO ]: Backedges is TWOTRACK [2018-06-22 04:56:27,359 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:56:27,360 INFO ]: Difference is false [2018-06-22 04:56:27,360 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:56:27,360 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:56:27,372 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:56:27,383 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:56:27,383 INFO ]: Found error trace [2018-06-22 04:56:27,384 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:56:27,384 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:56:27,388 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 04:56:27,390 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:56:27,390 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:56:27,425 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:56:27,425 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:56:27,425 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:56:27,494 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:56:27,568 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:56:27,571 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:56:27,688 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:56:27,690 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:56:27,700 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:56:27,700 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:56:27,702 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:56:27,777 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:56:27,778 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:56:27,779 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:56:27,780 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:56:27,780 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:56:27,788 INFO ]: With dead ends: 9 [2018-06-22 04:56:27,788 INFO ]: Without dead ends: 9 [2018-06-22 04:56:27,790 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 04:56:27,808 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:56:27,824 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:56:27,825 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:56:27,826 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:56:27,827 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:56:27,827 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:56:27,827 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:56:27,827 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:56:27,827 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:56:27,828 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:56:27,828 INFO ]: Found error trace [2018-06-22 04:56:27,828 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:56:27,828 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:56:27,828 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 04:56:27,828 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:56:27,828 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:56:27,829 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:56:27,829 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:56:27,829 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:56:27,992 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:56:28,297 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:56:28,297 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:56:28,297 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 04:56:28,308 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:56:28,431 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:56:28,441 INFO ]: Computing forward predicates... [2018-06-22 04:56:29,141 WARN ]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:56:29,153 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:56:29,187 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:56:29,187 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 04:56:29,188 INFO ]: Interpolant automaton has 6 states [2018-06-22 04:56:29,188 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 04:56:29,188 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-22 04:56:29,188 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 04:56:29,592 WARN ]: Spent 347.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-06-22 04:56:29,772 WARN ]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 04:56:29,822 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:56:29,822 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 04:56:29,822 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 04:56:29,822 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 04:56:29,823 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:56:29,823 INFO ]: With dead ends: 11 [2018-06-22 04:56:29,823 INFO ]: Without dead ends: 11 [2018-06-22 04:56:29,824 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-06-22 04:56:29,824 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 04:56:29,825 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 04:56:29,825 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 04:56:29,825 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 04:56:29,826 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 04:56:29,826 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:56:29,826 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 04:56:29,826 INFO ]: Interpolant automaton has 6 states. [2018-06-22 04:56:29,826 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 04:56:29,826 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 04:56:29,826 INFO ]: Found error trace [2018-06-22 04:56:29,826 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:56:29,826 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:56:29,826 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-22 04:56:29,827 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:56:29,827 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:56:29,828 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:56:29,828 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:56:29,828 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:56:29,998 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:56:30,422 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:56:30,423 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:56:30,423 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 04:56:30,433 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:56:30,578 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:56:30,578 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:56:30,591 INFO ]: Computing forward predicates... [2018-06-22 04:56:31,423 WARN ]: Spent 451.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2018-06-22 04:56:31,972 WARN ]: Spent 148.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2018-06-22 04:56:31,975 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:56:31,995 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:56:31,995 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 04:56:31,996 INFO ]: Interpolant automaton has 10 states [2018-06-22 04:56:31,996 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 04:56:31,996 INFO ]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-06-22 04:56:31,996 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 04:56:32,216 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:56:32,217 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 04:56:32,217 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 04:56:32,217 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 04:56:32,217 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:56:32,220 INFO ]: With dead ends: 12 [2018-06-22 04:56:32,220 INFO ]: Without dead ends: 12 [2018-06-22 04:56:32,220 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2018-06-22 04:56:32,221 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 04:56:32,222 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 04:56:32,222 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 04:56:32,222 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 04:56:32,222 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-22 04:56:32,222 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:56:32,222 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 04:56:32,222 INFO ]: Interpolant automaton has 10 states. [2018-06-22 04:56:32,222 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 04:56:32,223 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 04:56:32,223 INFO ]: Found error trace [2018-06-22 04:56:32,223 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:56:32,223 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:56:32,223 INFO ]: Analyzing trace with hash 201204236, now seen corresponding path program 3 times [2018-06-22 04:56:32,223 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:56:32,223 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:56:32,225 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:56:32,225 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:56:32,225 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:56:32,356 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:56:32,860 WARN ]: Spent 165.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 2 [2018-06-22 04:56:33,400 WARN ]: Spent 469.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2018-06-22 04:56:33,443 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:56:33,444 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:56:33,444 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 04:56:33,460 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:56:33,587 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 04:56:33,587 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:56:33,598 INFO ]: Computing forward predicates... [2018-06-22 04:56:34,976 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:56:34,998 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:56:34,998 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-06-22 04:56:34,999 INFO ]: Interpolant automaton has 12 states [2018-06-22 04:56:34,999 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 04:56:34,999 INFO ]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-06-22 04:56:34,999 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2018-06-22 04:56:35,755 WARN ]: Spent 149.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2018-06-22 04:56:35,756 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:56:35,756 INFO ]: Finished difference Result 16 states and 16 transitions. [2018-06-22 04:56:35,756 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 04:56:35,756 INFO ]: Start accepts. Automaton has 12 states. Word has length 11 [2018-06-22 04:56:35,756 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:56:35,756 INFO ]: With dead ends: 16 [2018-06-22 04:56:35,756 INFO ]: Without dead ends: 16 [2018-06-22 04:56:35,756 INFO ]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2018-06-22 04:56:35,756 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-22 04:56:35,758 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-22 04:56:35,758 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-22 04:56:35,758 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-06-22 04:56:35,758 INFO ]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2018-06-22 04:56:35,758 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:56:35,758 INFO ]: Abstraction has 16 states and 16 transitions. [2018-06-22 04:56:35,758 INFO ]: Interpolant automaton has 12 states. [2018-06-22 04:56:35,758 INFO ]: Start isEmpty. Operand 16 states and 16 transitions. [2018-06-22 04:56:35,758 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-22 04:56:35,758 INFO ]: Found error trace [2018-06-22 04:56:35,758 INFO ]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:56:35,758 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:56:35,758 INFO ]: Analyzing trace with hash 1051911180, now seen corresponding path program 4 times [2018-06-22 04:56:35,759 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:56:35,759 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:56:35,761 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:56:35,761 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:56:35,761 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:56:36,042 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:56:36,683 WARN ]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-06-22 04:56:36,936 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2018-06-22 04:56:37,117 WARN ]: Spent 168.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2018-06-22 04:56:37,273 WARN ]: Spent 144.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2018-06-22 04:56:37,369 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:56:37,369 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:56:37,369 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) [2018-06-22 04:56:37,382 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:56:45,671 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 04:56:45,671 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:56:45,692 INFO ]: Computing forward predicates... [2018-06-22 04:56:47,506 WARN ]: Spent 804.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-06-22 04:56:50,642 WARN ]: Spent 1.05 s on a formula simplification. DAG size of input: 16 DAG size of output: 13 Received shutdown request... [2018-06-22 04:57:33,008 INFO ]: Timeout while computing interpolants [2018-06-22 04:57:33,208 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:57:33,209 WARN ]: Verification canceled [2018-06-22 04:57:33,212 WARN ]: Timeout [2018-06-22 04:57:33,212 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:57:33 BoogieIcfgContainer [2018-06-22 04:57:33,212 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:57:33,213 INFO ]: Toolchain (without parser) took 66555.14 ms. Allocated memory was 308.3 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 239.9 MB in the beginning and 614.3 MB in the end (delta: -374.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:57:33,214 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.3 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:57:33,214 INFO ]: ChcToBoogie took 78.31 ms. Allocated memory is still 308.3 MB. Free memory was 239.9 MB in the beginning and 237.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:57:33,215 INFO ]: Boogie Preprocessor took 69.23 ms. Allocated memory is still 308.3 MB. Free memory was 237.9 MB in the beginning and 235.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:57:33,215 INFO ]: RCFGBuilder took 467.04 ms. Allocated memory is still 308.3 MB. Free memory was 235.9 MB in the beginning and 208.0 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 3.6 GB. [2018-06-22 04:57:33,216 INFO ]: TraceAbstraction took 65922.13 ms. Allocated memory was 308.3 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 208.0 MB in the beginning and 614.3 MB in the end (delta: -406.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:57:33,219 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 308.3 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 78.31 ms. Allocated memory is still 308.3 MB. Free memory was 239.9 MB in the beginning and 237.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 69.23 ms. Allocated memory is still 308.3 MB. Free memory was 237.9 MB in the beginning and 235.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 467.04 ms. Allocated memory is still 308.3 MB. Free memory was 235.9 MB in the beginning and 208.0 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 3.6 GB. * TraceAbstraction took 65922.13 ms. Allocated memory was 308.3 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 208.0 MB in the beginning and 614.3 MB in the end (delta: -406.3 MB). Peak memory consumption was 1.3 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 16 with TraceHistMax 8, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 2090 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 65.8s OverallTime, 5 OverallIterations, 8 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 5 SDslu, 66 SDs, 0 SdLazy, 33 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 2580 SizeOfPredicates, 12 NumberOfNonLiveVariables, 925 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/34 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/toy.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-57-33-230.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/toy.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-57-33-230.csv Completed graceful shutdown