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_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/car_4_e8_118_e7_178.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 15:54:09,907 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 15:54:09,909 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 15:54:09,920 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 15:54:09,920 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 15:54:09,921 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 15:54:09,922 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 15:54:09,927 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 15:54:09,929 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 15:54:09,929 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 15:54:09,930 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 15:54:09,930 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 15:54:09,931 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 15:54:09,932 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 15:54:09,933 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 15:54:09,934 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 15:54:09,936 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 15:54:09,938 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 15:54:09,939 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 15:54:09,940 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 15:54:09,941 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 15:54:09,944 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 15:54:09,944 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 15:54:09,944 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 15:54:09,945 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 15:54:09,946 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 15:54:09,947 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 15:54:09,947 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 15:54:09,948 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 15:54:09,949 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 15:54:09,949 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 15:54:09,950 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 15:54:09,950 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 15:54:09,951 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 15:54:09,952 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 15:54:09,952 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 15:54:09,965 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 15:54:09,965 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 15:54:09,966 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 15:54:09,966 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 15:54:09,967 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 15:54:09,967 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 15:54:09,967 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 15:54:09,967 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 15:54:09,968 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 15:54:09,968 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 15:54:09,968 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:54:09,968 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 15:54:09,968 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 15:54:09,969 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 15:54:09,969 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 15:54:09,969 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 15:54:09,969 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 15:54:09,969 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 15:54:09,970 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 15:54:09,971 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 15:54:09,971 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 15:54:10,018 INFO ]: Repository-Root is: /tmp [2018-06-22 15:54:10,036 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 15:54:10,044 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 15:54:10,045 INFO ]: Initializing SmtParser... [2018-06-22 15:54:10,046 INFO ]: SmtParser initialized [2018-06-22 15:54:10,046 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_4_e8_118_e7_178.smt2 [2018-06-22 15:54:10,048 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 15:54:10,141 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_4_e8_118_e7_178.smt2 unknown [2018-06-22 15:54:10,440 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_4_e8_118_e7_178.smt2 [2018-06-22 15:54:10,445 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 15:54:10,451 INFO ]: Walking toolchain with 4 elements. [2018-06-22 15:54:10,451 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 15:54:10,451 INFO ]: Initializing ChcToBoogie... [2018-06-22 15:54:10,451 INFO ]: ChcToBoogie initialized [2018-06-22 15:54:10,455 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:54:10" (1/1) ... [2018-06-22 15:54:10,504 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:10 Unit [2018-06-22 15:54:10,504 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 15:54:10,505 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 15:54:10,505 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 15:54:10,505 INFO ]: Boogie Preprocessor initialized [2018-06-22 15:54:10,524 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:10" (1/1) ... [2018-06-22 15:54:10,524 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:10" (1/1) ... [2018-06-22 15:54:10,536 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:10" (1/1) ... [2018-06-22 15:54:10,536 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:10" (1/1) ... [2018-06-22 15:54:10,551 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:10" (1/1) ... [2018-06-22 15:54:10,552 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:10" (1/1) ... [2018-06-22 15:54:10,554 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:10" (1/1) ... [2018-06-22 15:54:10,556 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 15:54:10,557 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 15:54:10,557 INFO ]: Initializing RCFGBuilder... [2018-06-22 15:54:10,557 INFO ]: RCFGBuilder initialized [2018-06-22 15:54:10,558 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:10" (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 15:54:10,582 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 15:54:10,582 INFO ]: Found specification of procedure False [2018-06-22 15:54:10,582 INFO ]: Found implementation of procedure False [2018-06-22 15:54:10,583 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 15:54:10,583 INFO ]: Found specification of procedure state [2018-06-22 15:54:10,583 INFO ]: Found implementation of procedure state [2018-06-22 15:54:10,583 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 15:54:10,583 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 15:54:10,583 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 15:54:10,929 INFO ]: Using library mode [2018-06-22 15:54:10,929 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:54:10 BoogieIcfgContainer [2018-06-22 15:54:10,930 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 15:54:10,934 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 15:54:10,934 INFO ]: Initializing TraceAbstraction... [2018-06-22 15:54:10,941 INFO ]: TraceAbstraction initialized [2018-06-22 15:54:10,941 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:54:10" (1/3) ... [2018-06-22 15:54:10,942 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a5df2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 03:54:10, skipping insertion in model container [2018-06-22 15:54:10,942 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:54:10" (2/3) ... [2018-06-22 15:54:10,942 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a5df2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 03:54:10, skipping insertion in model container [2018-06-22 15:54:10,942 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:54:10" (3/3) ... [2018-06-22 15:54:10,944 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 15:54:10,954 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 15:54:10,964 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 15:54:11,012 INFO ]: Using default assertion order modulation [2018-06-22 15:54:11,012 INFO ]: Interprodecural is true [2018-06-22 15:54:11,013 INFO ]: Hoare is false [2018-06-22 15:54:11,013 INFO ]: Compute interpolants for FPandBP [2018-06-22 15:54:11,013 INFO ]: Backedges is TWOTRACK [2018-06-22 15:54:11,013 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 15:54:11,013 INFO ]: Difference is false [2018-06-22 15:54:11,013 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 15:54:11,013 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 15:54:11,030 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 15:54:11,043 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 15:54:11,043 INFO ]: Found error trace [2018-06-22 15:54:11,044 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:54:11,044 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:54:11,049 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 15:54:11,051 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:54:11,051 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:54:11,097 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:11,097 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:54:11,097 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:11,178 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:11,343 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 15:54:11,345 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 15:54:11,345 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 15:54:11,346 INFO ]: Interpolant automaton has 4 states [2018-06-22 15:54:11,356 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 15:54:11,357 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:54:11,359 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 15:54:11,477 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:54:11,477 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 15:54:11,478 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 15:54:11,479 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 15:54:11,479 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:54:11,489 INFO ]: With dead ends: 13 [2018-06-22 15:54:11,489 INFO ]: Without dead ends: 13 [2018-06-22 15:54:11,490 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 [2018-06-22 15:54:11,503 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 15:54:11,526 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 15:54:11,526 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 15:54:11,527 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 15:54:11,528 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 15:54:11,528 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:54:11,528 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 15:54:11,528 INFO ]: Interpolant automaton has 4 states. [2018-06-22 15:54:11,528 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 15:54:11,529 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 15:54:11,529 INFO ]: Found error trace [2018-06-22 15:54:11,529 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:54:11,529 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:54:11,529 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 15:54:11,529 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:54:11,529 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:54:11,530 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:11,530 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:54:11,530 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:11,586 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:12,338 WARN ]: Spent 562.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 26 [2018-06-22 15:54:12,406 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:54:12,406 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:54:12,406 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) [2018-06-22 15:54:12,436 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:54:12,520 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:12,530 INFO ]: Computing forward predicates... [2018-06-22 15:54:13,322 WARN ]: Spent 525.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 12 [2018-06-22 15:54:13,570 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:54:13,603 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:54:13,604 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 15:54:13,604 INFO ]: Interpolant automaton has 8 states [2018-06-22 15:54:13,604 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 15:54:13,604 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 15:54:13,605 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 15:54:14,049 WARN ]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-06-22 15:54:14,184 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:54:14,184 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 15:54:14,185 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 15:54:14,185 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 15:54:14,185 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:54:14,185 INFO ]: With dead ends: 15 [2018-06-22 15:54:14,185 INFO ]: Without dead ends: 15 [2018-06-22 15:54:14,186 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-06-22 15:54:14,186 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 15:54:14,189 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 15:54:14,189 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 15:54:14,189 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 15:54:14,189 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 15:54:14,189 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:54:14,189 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 15:54:14,189 INFO ]: Interpolant automaton has 8 states. [2018-06-22 15:54:14,189 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 15:54:14,190 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 15:54:14,190 INFO ]: Found error trace [2018-06-22 15:54:14,190 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:54:14,190 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:54:14,190 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 15:54:14,190 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:54:14,190 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:54:14,191 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:14,191 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:54:14,191 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:14,256 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:14,541 WARN ]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 31 [2018-06-22 15:54:14,684 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2018-06-22 15:54:14,743 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:54:14,743 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:54:14,743 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 15:54:14,765 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:54:14,846 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:54:14,846 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:14,851 INFO ]: Computing forward predicates... [2018-06-22 15:54:15,077 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2018-06-22 15:54:15,281 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:54:15,300 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:54:15,301 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 15:54:15,301 INFO ]: Interpolant automaton has 12 states [2018-06-22 15:54:15,301 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 15:54:15,301 INFO ]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-06-22 15:54:15,301 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 15:54:15,622 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:54:15,622 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 15:54:15,622 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 15:54:15,622 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 15:54:15,622 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:54:15,623 INFO ]: With dead ends: 17 [2018-06-22 15:54:15,623 INFO ]: Without dead ends: 17 [2018-06-22 15:54:15,623 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2018-06-22 15:54:15,624 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 15:54:15,627 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 15:54:15,627 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 15:54:15,627 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 15:54:15,627 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 15:54:15,628 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:54:15,628 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 15:54:15,628 INFO ]: Interpolant automaton has 12 states. [2018-06-22 15:54:15,628 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 15:54:15,628 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 15:54:15,628 INFO ]: Found error trace [2018-06-22 15:54:15,628 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:54:15,629 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:54:15,629 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 15:54:15,629 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:54:15,629 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:54:15,629 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:15,630 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:54:15,630 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:15,680 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:16,038 WARN ]: Spent 130.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2018-06-22 15:54:16,289 WARN ]: Spent 242.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2018-06-22 15:54:16,631 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:54:16,631 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:54:16,631 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 15:54:16,643 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 15:54:16,722 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 15:54:16,722 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:16,728 INFO ]: Computing forward predicates... [2018-06-22 15:54:17,258 WARN ]: Spent 191.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2018-06-22 15:54:17,741 WARN ]: Spent 249.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2018-06-22 15:54:17,938 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:54:17,959 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:54:17,959 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-22 15:54:17,959 INFO ]: Interpolant automaton has 16 states [2018-06-22 15:54:17,959 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 15:54:17,959 INFO ]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2018-06-22 15:54:17,959 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-22 15:54:18,490 WARN ]: Spent 488.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 120 [2018-06-22 15:54:18,801 WARN ]: Spent 222.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 73 [2018-06-22 15:54:19,198 WARN ]: Spent 362.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 107 [2018-06-22 15:54:19,811 WARN ]: Spent 577.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2018-06-22 15:54:19,855 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:54:19,855 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 15:54:19,856 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 15:54:19,856 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-22 15:54:19,856 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:54:19,856 INFO ]: With dead ends: 19 [2018-06-22 15:54:19,856 INFO ]: Without dead ends: 19 [2018-06-22 15:54:19,857 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2018-06-22 15:54:19,857 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 15:54:19,859 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 15:54:19,859 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 15:54:19,860 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 15:54:19,860 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 15:54:19,860 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:54:19,860 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 15:54:19,860 INFO ]: Interpolant automaton has 16 states. [2018-06-22 15:54:19,860 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 15:54:19,861 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 15:54:19,862 INFO ]: Found error trace [2018-06-22 15:54:19,862 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:54:19,862 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:54:19,862 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 15:54:19,862 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:54:19,862 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:54:19,863 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:19,863 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:54:19,863 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:19,936 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:20,472 WARN ]: Spent 218.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2018-06-22 15:54:20,997 WARN ]: Spent 515.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 67 [2018-06-22 15:54:21,120 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2018-06-22 15:54:21,367 WARN ]: Spent 230.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 84 [2018-06-22 15:54:21,580 WARN ]: Spent 176.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-06-22 15:54:21,850 WARN ]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2018-06-22 15:54:21,890 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 15:54:21,891 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:54:21,891 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 15:54:21,905 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 15:54:21,986 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 15:54:21,986 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:21,994 INFO ]: Computing forward predicates... [2018-06-22 15:54:23,366 WARN ]: Spent 581.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 12 [2018-06-22 15:54:23,588 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 15:54:23,609 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:54:23,609 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2018-06-22 15:54:23,609 INFO ]: Interpolant automaton has 20 states [2018-06-22 15:54:23,609 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 15:54:23,610 INFO ]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2018-06-22 15:54:23,610 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-22 15:54:24,391 WARN ]: Spent 733.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 158 [2018-06-22 15:54:25,477 WARN ]: Spent 971.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 167 [2018-06-22 15:54:26,383 WARN ]: Spent 758.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 152 [2018-06-22 15:54:27,268 WARN ]: Spent 831.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 165 [2018-06-22 15:54:28,046 WARN ]: Spent 579.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 138 [2018-06-22 15:54:28,112 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:54:28,112 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 15:54:28,112 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 15:54:28,112 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-22 15:54:28,112 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:54:28,113 INFO ]: With dead ends: 21 [2018-06-22 15:54:28,113 INFO ]: Without dead ends: 21 [2018-06-22 15:54:28,113 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2018-06-22 15:54:28,113 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 15:54:28,117 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 15:54:28,117 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 15:54:28,117 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 15:54:28,117 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 15:54:28,118 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:54:28,118 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 15:54:28,118 INFO ]: Interpolant automaton has 20 states. [2018-06-22 15:54:28,118 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 15:54:28,118 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 15:54:28,118 INFO ]: Found error trace [2018-06-22 15:54:28,118 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:54:28,119 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:54:28,119 INFO ]: Analyzing trace with hash 1986427350, now seen corresponding path program 5 times [2018-06-22 15:54:28,119 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:54:28,119 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:54:28,119 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:28,119 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:54:28,119 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:54:28,215 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:29,135 WARN ]: Spent 658.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 13 [2018-06-22 15:54:29,594 WARN ]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2018-06-22 15:54:29,898 INFO ]: Checked inductivity of 55 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 15:54:29,898 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:54:29,898 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 [2018-06-22 15:54:29,908 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 15:54:30,000 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 15:54:30,000 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:54:30,010 INFO ]: Computing forward predicates... [2018-06-22 15:54:30,912 INFO ]: Checked inductivity of 55 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-06-22 15:54:30,932 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:54:30,932 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2018-06-22 15:54:30,933 INFO ]: Interpolant automaton has 22 states [2018-06-22 15:54:30,933 INFO ]: Constructing interpolant automaton starting with 22 interpolants. [2018-06-22 15:54:30,933 INFO ]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2018-06-22 15:54:30,933 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 22 states. [2018-06-22 15:54:31,278 WARN ]: Spent 244.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 72 [2018-06-22 15:54:31,465 WARN ]: Spent 123.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-06-22 15:54:31,724 WARN ]: Spent 229.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 69 [2018-06-22 15:54:31,739 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:54:31,739 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 15:54:31,740 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 15:54:31,740 INFO ]: Start accepts. Automaton has 22 states. Word has length 29 [2018-06-22 15:54:31,740 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:54:31,740 INFO ]: With dead ends: 17 [2018-06-22 15:54:31,740 INFO ]: Without dead ends: 0 [2018-06-22 15:54:31,741 INFO ]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2018-06-22 15:54:31,741 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 15:54:31,741 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 15:54:31,741 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 15:54:31,741 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 15:54:31,741 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-06-22 15:54:31,741 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:54:31,741 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 15:54:31,741 INFO ]: Interpolant automaton has 22 states. [2018-06-22 15:54:31,741 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 15:54:31,741 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 15:54:31,747 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 03:54:31 BoogieIcfgContainer [2018-06-22 15:54:31,747 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 15:54:31,747 INFO ]: Toolchain (without parser) took 21302.36 ms. Allocated memory was 308.8 MB in the beginning and 542.1 MB in the end (delta: 233.3 MB). Free memory was 257.2 MB in the beginning and 235.9 MB in the end (delta: 21.3 MB). Peak memory consumption was 254.6 MB. Max. memory is 3.6 GB. [2018-06-22 15:54:31,748 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:54:31,749 INFO ]: ChcToBoogie took 53.34 ms. Allocated memory is still 308.8 MB. Free memory was 257.2 MB in the beginning and 255.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:54:31,749 INFO ]: Boogie Preprocessor took 51.37 ms. Allocated memory is still 308.8 MB. Free memory was 255.2 MB in the beginning and 253.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:54:31,749 INFO ]: RCFGBuilder took 372.79 ms. Allocated memory is still 308.8 MB. Free memory was 253.2 MB in the beginning and 237.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:54:31,750 INFO ]: TraceAbstraction took 20812.51 ms. Allocated memory was 308.8 MB in the beginning and 542.1 MB in the end (delta: 233.3 MB). Free memory was 237.2 MB in the beginning and 235.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 234.6 MB. Max. memory is 3.6 GB. [2018-06-22 15:54:31,753 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 53.34 ms. Allocated memory is still 308.8 MB. Free memory was 257.2 MB in the beginning and 255.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 51.37 ms. Allocated memory is still 308.8 MB. Free memory was 255.2 MB in the beginning and 253.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 372.79 ms. Allocated memory is still 308.8 MB. Free memory was 253.2 MB in the beginning and 237.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 20812.51 ms. Allocated memory was 308.8 MB in the beginning and 542.1 MB in the end (delta: 233.3 MB). Free memory was 237.2 MB in the beginning and 235.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 234.6 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 3 procedures, 13 locations, 1 error locations. SAFE Result, 20.7s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 8.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 SDtfs, 105 SDslu, 338 SDs, 0 SdLazy, 282 SolverSat, 144 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 15.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 0.7s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 58844 SizeOfPredicates, 221 NumberOfNonLiveVariables, 2425 ConjunctsInSsa, 311 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 76/250 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/car_4_e8_118_e7_178.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_15-54-31-762.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_4_e8_118_e7_178.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_15-54-31-762.csv Received shutdown request...