java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/two_counters.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 10:27:03,082 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 10:27:03,085 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 10:27:03,097 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 10:27:03,097 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 10:27:03,098 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 10:27:03,101 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 10:27:03,103 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 10:27:03,105 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 10:27:03,105 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 10:27:03,108 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 10:27:03,108 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 10:27:03,109 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 10:27:03,110 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 10:27:03,110 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 10:27:03,113 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 10:27:03,114 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 10:27:03,124 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 10:27:03,125 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 10:27:03,126 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 10:27:03,127 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 10:27:03,133 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 10:27:03,134 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 10:27:03,134 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 10:27:03,135 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 10:27:03,136 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 10:27:03,136 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 10:27:03,138 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 10:27:03,139 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 10:27:03,139 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 10:27:03,140 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 10:27:03,140 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 10:27:03,141 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 10:27:03,141 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 10:27:03,147 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 10:27:03,147 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 10:27:03,160 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 10:27:03,160 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 10:27:03,161 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 10:27:03,161 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 10:27:03,162 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 10:27:03,162 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 10:27:03,162 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 10:27:03,162 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 10:27:03,162 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 10:27:03,163 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 10:27:03,163 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 10:27:03,163 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 10:27:03,163 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 10:27:03,163 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 10:27:03,163 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 10:27:03,164 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 10:27:03,164 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 10:27:03,165 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 10:27:03,165 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 10:27:03,219 INFO ]: Repository-Root is: /tmp [2018-06-22 10:27:03,235 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 10:27:03,238 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 10:27:03,239 INFO ]: Initializing SmtParser... [2018-06-22 10:27:03,240 INFO ]: SmtParser initialized [2018-06-22 10:27:03,240 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/two_counters.smt2 [2018-06-22 10:27:03,241 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 10:27:03,320 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/two_counters.smt2 unknown [2018-06-22 10:27:03,823 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/two_counters.smt2 [2018-06-22 10:27:03,827 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 10:27:03,832 INFO ]: Walking toolchain with 4 elements. [2018-06-22 10:27:03,833 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 10:27:03,833 INFO ]: Initializing ChcToBoogie... [2018-06-22 10:27:03,833 INFO ]: ChcToBoogie initialized [2018-06-22 10:27:03,836 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 10:27:03" (1/1) ... [2018-06-22 10:27:03,899 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:27:03 Unit [2018-06-22 10:27:03,900 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 10:27:03,901 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 10:27:03,901 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 10:27:03,901 INFO ]: Boogie Preprocessor initialized [2018-06-22 10:27:03,922 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:27:03" (1/1) ... [2018-06-22 10:27:03,922 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:27:03" (1/1) ... [2018-06-22 10:27:03,931 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:27:03" (1/1) ... [2018-06-22 10:27:03,931 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:27:03" (1/1) ... [2018-06-22 10:27:03,934 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:27:03" (1/1) ... [2018-06-22 10:27:03,936 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:27:03" (1/1) ... [2018-06-22 10:27:03,937 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:27:03" (1/1) ... [2018-06-22 10:27:03,944 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 10:27:03,945 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 10:27:03,945 INFO ]: Initializing RCFGBuilder... [2018-06-22 10:27:03,945 INFO ]: RCFGBuilder initialized [2018-06-22 10:27:03,946 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:27:03" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 10:27:03,963 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 10:27:03,963 INFO ]: Found specification of procedure gotoProc [2018-06-22 10:27:03,963 INFO ]: Found implementation of procedure gotoProc [2018-06-22 10:27:03,963 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 10:27:03,963 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 10:27:03,963 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 10:27:04,193 INFO ]: Using library mode [2018-06-22 10:27:04,194 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:27:04 BoogieIcfgContainer [2018-06-22 10:27:04,194 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 10:27:04,200 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 10:27:04,200 INFO ]: Initializing TraceAbstraction... [2018-06-22 10:27:04,206 INFO ]: TraceAbstraction initialized [2018-06-22 10:27:04,207 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 10:27:03" (1/3) ... [2018-06-22 10:27:04,208 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44af81fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 10:27:04, skipping insertion in model container [2018-06-22 10:27:04,208 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:27:03" (2/3) ... [2018-06-22 10:27:04,208 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44af81fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 10:27:04, skipping insertion in model container [2018-06-22 10:27:04,208 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:27:04" (3/3) ... [2018-06-22 10:27:04,210 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 10:27:04,223 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 10:27:04,236 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 10:27:04,277 INFO ]: Using default assertion order modulation [2018-06-22 10:27:04,277 INFO ]: Interprodecural is true [2018-06-22 10:27:04,277 INFO ]: Hoare is false [2018-06-22 10:27:04,277 INFO ]: Compute interpolants for FPandBP [2018-06-22 10:27:04,277 INFO ]: Backedges is TWOTRACK [2018-06-22 10:27:04,277 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 10:27:04,277 INFO ]: Difference is false [2018-06-22 10:27:04,277 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 10:27:04,277 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 10:27:04,292 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 10:27:04,303 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 10:27:04,303 INFO ]: Found error trace [2018-06-22 10:27:04,304 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:27:04,304 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:27:04,308 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 10:27:04,310 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:27:04,310 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:27:04,345 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:27:04,345 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:27:04,345 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:27:04,397 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:27:04,628 WARN ]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-06-22 10:27:04,631 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:27:04,634 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:27:04,634 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 10:27:04,636 INFO ]: Interpolant automaton has 3 states [2018-06-22 10:27:04,653 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 10:27:04,653 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 10:27:04,656 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 10:27:04,718 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:27:04,718 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 10:27:04,719 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 10:27:04,720 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 10:27:04,720 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:27:04,728 INFO ]: With dead ends: 9 [2018-06-22 10:27:04,728 INFO ]: Without dead ends: 9 [2018-06-22 10:27:04,729 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 10:27:04,743 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 10:27:04,771 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 10:27:04,772 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 10:27:04,772 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 10:27:04,774 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 10:27:04,774 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:27:04,774 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 10:27:04,774 INFO ]: Interpolant automaton has 3 states. [2018-06-22 10:27:04,774 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 10:27:04,775 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 10:27:04,775 INFO ]: Found error trace [2018-06-22 10:27:04,775 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:27:04,775 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:27:04,775 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 10:27:04,775 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:27:04,775 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:27:04,776 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:27:04,776 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:27:04,776 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:27:04,826 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:27:05,231 WARN ]: Spent 327.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-06-22 10:27:05,243 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:27:05,243 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:27:05,243 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 10:27:05,257 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:27:05,318 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:27:05,329 INFO ]: Computing forward predicates... [2018-06-22 10:27:05,506 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 10:27:05,820 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:27:05,858 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:27:05,858 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 10:27:05,859 INFO ]: Interpolant automaton has 6 states [2018-06-22 10:27:05,859 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 10:27:05,859 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:27:05,859 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 10:27:06,021 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:27:06,022 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 10:27:06,057 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 10:27:06,058 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 10:27:06,058 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:27:06,058 INFO ]: With dead ends: 10 [2018-06-22 10:27:06,058 INFO ]: Without dead ends: 10 [2018-06-22 10:27:06,059 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:27:06,059 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 10:27:06,060 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 10:27:06,060 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 10:27:06,061 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 10:27:06,061 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 10:27:06,061 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:27:06,061 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 10:27:06,061 INFO ]: Interpolant automaton has 6 states. [2018-06-22 10:27:06,061 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 10:27:06,061 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 10:27:06,061 INFO ]: Found error trace [2018-06-22 10:27:06,061 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:27:06,061 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:27:06,062 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 10:27:06,062 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:27:06,062 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:27:06,064 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:27:06,064 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:27:06,064 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:27:06,133 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:27:06,335 WARN ]: Spent 124.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2018-06-22 10:27:06,509 WARN ]: Spent 139.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-06-22 10:27:06,657 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:27:06,657 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:27:06,657 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) [2018-06-22 10:27:06,677 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 10:27:06,745 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 10:27:06,745 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:27:06,748 INFO ]: Computing forward predicates... [2018-06-22 10:27:06,792 WARN ]: expecting exponential blowup for input size 14 [2018-06-22 10:27:07,138 WARN ]: Simplifying disjunction of 12288 conjuctions. This might take some time... [2018-06-22 10:27:26,324 INFO ]: Simplified to disjunction of 12288 conjuctions. [2018-06-22 10:27:26,474 WARN ]: expecting exponential blowup for input size 14 [2018-06-22 10:27:26,564 WARN ]: Simplifying disjunction of 12288 conjuctions. This might take some time... [2018-06-22 10:27:46,672 INFO ]: Simplified to disjunction of 12288 conjuctions. [2018-06-22 10:27:47,358 WARN ]: Spent 404.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-06-22 10:27:47,604 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:27:47,628 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:27:47,628 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 10:27:47,628 INFO ]: Interpolant automaton has 8 states [2018-06-22 10:27:47,628 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 10:27:47,628 INFO ]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-22 10:27:47,628 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-22 10:27:47,799 WARN ]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-06-22 10:27:47,912 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:27:47,912 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 10:27:47,912 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 10:27:47,912 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-22 10:27:47,912 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:27:47,913 INFO ]: With dead ends: 12 [2018-06-22 10:27:47,913 INFO ]: Without dead ends: 12 [2018-06-22 10:27:47,913 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-06-22 10:27:47,913 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 10:27:47,915 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 10:27:47,915 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 10:27:47,915 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 10:27:47,915 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-06-22 10:27:47,915 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:27:47,915 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 10:27:47,915 INFO ]: Interpolant automaton has 8 states. [2018-06-22 10:27:47,916 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 10:27:47,916 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 10:27:47,916 INFO ]: Found error trace [2018-06-22 10:27:47,916 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:27:47,916 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:27:47,916 INFO ]: Analyzing trace with hash -1433955954, now seen corresponding path program 3 times [2018-06-22 10:27:47,916 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:27:47,916 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:27:47,917 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:27:47,917 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 10:27:47,917 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:27:47,946 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:27:48,143 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:27:48,143 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:27:48,143 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 10:27:48,152 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 10:27:48,209 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 10:27:48,210 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:27:48,213 INFO ]: Computing forward predicates... [2018-06-22 10:27:48,696 WARN ]: Spent 119.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-06-22 10:27:48,711 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:27:48,741 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:27:48,741 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-06-22 10:27:48,741 INFO ]: Interpolant automaton has 12 states [2018-06-22 10:27:48,742 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 10:27:48,742 INFO ]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-06-22 10:27:48,742 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2018-06-22 10:27:48,966 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:27:48,967 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 10:27:48,967 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 10:27:48,967 INFO ]: Start accepts. Automaton has 12 states. Word has length 11 [2018-06-22 10:27:48,967 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:27:48,967 INFO ]: With dead ends: 13 [2018-06-22 10:27:48,967 INFO ]: Without dead ends: 13 [2018-06-22 10:27:48,968 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2018-06-22 10:27:48,968 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 10:27:48,969 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 10:27:48,969 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 10:27:48,970 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 10:27:48,970 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-22 10:27:48,970 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:27:48,970 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 10:27:48,970 INFO ]: Interpolant automaton has 12 states. [2018-06-22 10:27:48,970 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 10:27:48,970 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 10:27:48,970 INFO ]: Found error trace [2018-06-22 10:27:48,970 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:27:48,970 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:27:48,970 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 4 times [2018-06-22 10:27:48,971 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:27:48,971 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:27:48,971 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:27:48,971 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 10:27:48,971 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:27:49,021 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:27:49,220 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:27:49,220 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:27:49,220 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 [2018-06-22 10:27:49,226 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 10:27:49,279 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 10:27:49,279 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:27:49,283 INFO ]: Computing forward predicates... [2018-06-22 10:27:49,517 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:27:49,538 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:27:49,538 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 10:27:49,538 INFO ]: Interpolant automaton has 14 states [2018-06-22 10:27:49,538 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 10:27:49,538 INFO ]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-06-22 10:27:49,539 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-22 10:27:49,627 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:27:49,627 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 10:27:49,627 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 10:27:49,627 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-22 10:27:49,627 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:27:49,627 INFO ]: With dead ends: 14 [2018-06-22 10:27:49,627 INFO ]: Without dead ends: 14 [2018-06-22 10:27:49,627 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2018-06-22 10:27:49,628 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 10:27:49,629 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 10:27:49,629 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 10:27:49,629 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 10:27:49,629 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-22 10:27:49,630 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:27:49,630 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 10:27:49,630 INFO ]: Interpolant automaton has 14 states. [2018-06-22 10:27:49,630 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 10:27:49,630 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 10:27:49,630 INFO ]: Found error trace [2018-06-22 10:27:49,630 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:27:49,630 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:27:49,630 INFO ]: Analyzing trace with hash 679342766, now seen corresponding path program 5 times [2018-06-22 10:27:49,630 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:27:49,630 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:27:49,631 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:27:49,631 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 10:27:49,631 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:27:49,659 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:27:49,928 INFO ]: Checked inductivity of 21 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 10:27:49,928 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:27:49,928 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) [2018-06-22 10:27:49,947 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 10:27:50,014 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-22 10:27:50,014 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:27:50,019 INFO ]: Computing forward predicates... [2018-06-22 10:27:50,898 WARN ]: Spent 302.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 28 [2018-06-22 10:27:51,372 WARN ]: Spent 188.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 27 [2018-06-22 10:27:51,390 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:27:51,424 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:27:51,424 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2018-06-22 10:27:51,425 INFO ]: Interpolant automaton has 15 states [2018-06-22 10:27:51,425 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 10:27:51,425 INFO ]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-06-22 10:27:51,425 INFO ]: Start difference. First operand 14 states and 14 transitions. Second operand 15 states. [2018-06-22 10:27:52,036 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:27:52,036 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 10:27:52,037 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 10:27:52,037 INFO ]: Start accepts. Automaton has 15 states. Word has length 13 [2018-06-22 10:27:52,037 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:27:52,037 INFO ]: With dead ends: 11 [2018-06-22 10:27:52,037 INFO ]: Without dead ends: 0 [2018-06-22 10:27:52,038 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2018-06-22 10:27:52,038 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 10:27:52,038 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 10:27:52,038 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 10:27:52,038 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 10:27:52,038 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-06-22 10:27:52,038 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:27:52,038 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 10:27:52,038 INFO ]: Interpolant automaton has 15 states. [2018-06-22 10:27:52,038 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 10:27:52,038 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 10:27:52,043 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 10:27:52 BoogieIcfgContainer [2018-06-22 10:27:52,044 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 10:27:52,045 INFO ]: Toolchain (without parser) took 48216.84 ms. Allocated memory was 300.9 MB in the beginning and 1.0 GB in the end (delta: 730.9 MB). Free memory was 255.3 MB in the beginning and 601.4 MB in the end (delta: -346.1 MB). Peak memory consumption was 384.7 MB. Max. memory is 3.6 GB. [2018-06-22 10:27:52,046 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 300.9 MB. Free memory is still 266.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 10:27:52,046 INFO ]: ChcToBoogie took 67.83 ms. Allocated memory is still 300.9 MB. Free memory was 255.3 MB in the beginning and 253.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 10:27:52,046 INFO ]: Boogie Preprocessor took 43.45 ms. Allocated memory is still 300.9 MB. Free memory was 253.3 MB in the beginning and 251.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-22 10:27:52,047 INFO ]: RCFGBuilder took 248.82 ms. Allocated memory is still 300.9 MB. Free memory was 251.2 MB in the beginning and 241.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 3.6 GB. [2018-06-22 10:27:52,047 INFO ]: TraceAbstraction took 47843.54 ms. Allocated memory was 300.9 MB in the beginning and 1.0 GB in the end (delta: 730.9 MB). Free memory was 241.1 MB in the beginning and 601.4 MB in the end (delta: -360.3 MB). Peak memory consumption was 370.5 MB. Max. memory is 3.6 GB. [2018-06-22 10:27:52,051 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 300.9 MB. Free memory is still 266.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 67.83 ms. Allocated memory is still 300.9 MB. Free memory was 255.3 MB in the beginning and 253.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 43.45 ms. Allocated memory is still 300.9 MB. Free memory was 253.3 MB in the beginning and 251.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 248.82 ms. Allocated memory is still 300.9 MB. Free memory was 251.2 MB in the beginning and 241.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 47843.54 ms. Allocated memory was 300.9 MB in the beginning and 1.0 GB in the end (delta: 730.9 MB). Free memory was 241.1 MB in the beginning and 601.4 MB in the end (delta: -360.3 MB). Peak memory consumption was 370.5 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. SAFE Result, 47.7s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 SDtfs, 10 SDslu, 141 SDs, 0 SdLazy, 196 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=5, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 45.3s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 8318 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1005 ConjunctsInSsa, 286 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 2/100 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/two_counters.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_10-27-52-070.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/two_counters.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_10-27-52-070.csv Received shutdown request...