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_2_e7_1027_e1_1047.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 15:51:19,454 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 15:51:19,456 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 15:51:19,468 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 15:51:19,468 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 15:51:19,469 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 15:51:19,470 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 15:51:19,474 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 15:51:19,476 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 15:51:19,476 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 15:51:19,479 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 15:51:19,479 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 15:51:19,480 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 15:51:19,481 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 15:51:19,482 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 15:51:19,485 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 15:51:19,487 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 15:51:19,489 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 15:51:19,490 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 15:51:19,491 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 15:51:19,492 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 15:51:19,495 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 15:51:19,495 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 15:51:19,495 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 15:51:19,496 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 15:51:19,497 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 15:51:19,498 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 15:51:19,498 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 15:51:19,500 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 15:51:19,500 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 15:51:19,500 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 15:51:19,501 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 15:51:19,501 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 15:51:19,502 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 15:51:19,503 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 15:51:19,503 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 15:51:19,516 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 15:51:19,561 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 15:51:19,561 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 15:51:19,561 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 15:51:19,563 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 15:51:19,563 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 15:51:19,563 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 15:51:19,564 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 15:51:19,564 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 15:51:19,564 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 15:51:19,565 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:51:19,565 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 15:51:19,565 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 15:51:19,565 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 15:51:19,566 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 15:51:19,566 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 15:51:19,566 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 15:51:19,566 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 15:51:19,567 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 15:51:19,569 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 15:51:19,569 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 15:51:19,626 INFO ]: Repository-Root is: /tmp [2018-06-22 15:51:19,644 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 15:51:19,648 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 15:51:19,650 INFO ]: Initializing SmtParser... [2018-06-22 15:51:19,650 INFO ]: SmtParser initialized [2018-06-22 15:51:19,651 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_2_e7_1027_e1_1047.smt2 [2018-06-22 15:51:19,652 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 15:51:19,739 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_2_e7_1027_e1_1047.smt2 unknown [2018-06-22 15:51:20,112 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_2_e7_1027_e1_1047.smt2 [2018-06-22 15:51:20,117 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 15:51:20,133 INFO ]: Walking toolchain with 4 elements. [2018-06-22 15:51:20,134 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 15:51:20,134 INFO ]: Initializing ChcToBoogie... [2018-06-22 15:51:20,134 INFO ]: ChcToBoogie initialized [2018-06-22 15:51:20,137 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:51:20" (1/1) ... [2018-06-22 15:51:20,189 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:20 Unit [2018-06-22 15:51:20,189 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 15:51:20,190 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 15:51:20,190 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 15:51:20,190 INFO ]: Boogie Preprocessor initialized [2018-06-22 15:51:20,213 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:20" (1/1) ... [2018-06-22 15:51:20,213 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:20" (1/1) ... [2018-06-22 15:51:20,223 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:20" (1/1) ... [2018-06-22 15:51:20,223 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:20" (1/1) ... [2018-06-22 15:51:20,239 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:20" (1/1) ... [2018-06-22 15:51:20,240 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:20" (1/1) ... [2018-06-22 15:51:20,241 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:20" (1/1) ... [2018-06-22 15:51:20,244 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 15:51:20,244 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 15:51:20,244 INFO ]: Initializing RCFGBuilder... [2018-06-22 15:51:20,244 INFO ]: RCFGBuilder initialized [2018-06-22 15:51:20,245 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:20" (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 15:51:20,259 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 15:51:20,260 INFO ]: Found specification of procedure False [2018-06-22 15:51:20,260 INFO ]: Found implementation of procedure False [2018-06-22 15:51:20,260 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 15:51:20,260 INFO ]: Found specification of procedure state [2018-06-22 15:51:20,260 INFO ]: Found implementation of procedure state [2018-06-22 15:51:20,260 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 15:51:20,260 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 15:51:20,260 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 15:51:20,579 INFO ]: Using library mode [2018-06-22 15:51:20,580 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:51:20 BoogieIcfgContainer [2018-06-22 15:51:20,580 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 15:51:20,581 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 15:51:20,581 INFO ]: Initializing TraceAbstraction... [2018-06-22 15:51:20,584 INFO ]: TraceAbstraction initialized [2018-06-22 15:51:20,584 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:51:20" (1/3) ... [2018-06-22 15:51:20,585 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f9aea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 03:51:20, skipping insertion in model container [2018-06-22 15:51:20,585 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:51:20" (2/3) ... [2018-06-22 15:51:20,586 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f9aea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 03:51:20, skipping insertion in model container [2018-06-22 15:51:20,586 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:51:20" (3/3) ... [2018-06-22 15:51:20,587 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 15:51:20,599 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 15:51:20,609 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 15:51:20,653 INFO ]: Using default assertion order modulation [2018-06-22 15:51:20,653 INFO ]: Interprodecural is true [2018-06-22 15:51:20,653 INFO ]: Hoare is false [2018-06-22 15:51:20,653 INFO ]: Compute interpolants for FPandBP [2018-06-22 15:51:20,653 INFO ]: Backedges is TWOTRACK [2018-06-22 15:51:20,653 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 15:51:20,653 INFO ]: Difference is false [2018-06-22 15:51:20,653 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 15:51:20,653 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 15:51:20,667 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 15:51:20,680 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 15:51:20,680 INFO ]: Found error trace [2018-06-22 15:51:20,681 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:51:20,681 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:51:20,687 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 15:51:20,689 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:51:20,689 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:51:20,723 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:20,723 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:51:20,723 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:20,849 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:51:21,054 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 15:51:21,055 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 15:51:21,056 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 15:51:21,057 INFO ]: Interpolant automaton has 4 states [2018-06-22 15:51:21,067 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 15:51:21,067 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:51:21,069 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 15:51:21,169 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:51:21,170 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 15:51:21,170 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 15:51:21,171 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 15:51:21,171 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:51:21,180 INFO ]: With dead ends: 13 [2018-06-22 15:51:21,180 INFO ]: Without dead ends: 13 [2018-06-22 15:51:21,181 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 15:51:21,195 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 15:51:21,214 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 15:51:21,215 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 15:51:21,216 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 15:51:21,217 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 15:51:21,218 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:51:21,218 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 15:51:21,218 INFO ]: Interpolant automaton has 4 states. [2018-06-22 15:51:21,218 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 15:51:21,219 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 15:51:21,219 INFO ]: Found error trace [2018-06-22 15:51:21,219 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:51:21,219 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:51:21,219 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 15:51:21,219 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:51:21,219 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:51:21,221 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:21,221 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:51:21,221 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:21,287 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:51:22,441 WARN ]: Spent 886.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2018-06-22 15:51:22,716 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:51:22,717 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:51:22,717 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 15:51:22,727 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:51:22,807 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:51:22,817 INFO ]: Computing forward predicates... [2018-06-22 15:51:23,647 WARN ]: Spent 168.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 15 [2018-06-22 15:51:23,786 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:51:23,806 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:51:23,806 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 15:51:23,807 INFO ]: Interpolant automaton has 9 states [2018-06-22 15:51:23,807 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 15:51:23,807 INFO ]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-06-22 15:51:23,807 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 15:51:24,080 WARN ]: Spent 172.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 35 [2018-06-22 15:51:24,173 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:51:24,173 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 15:51:24,174 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 15:51:24,174 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 15:51:24,174 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:51:24,175 INFO ]: With dead ends: 15 [2018-06-22 15:51:24,175 INFO ]: Without dead ends: 15 [2018-06-22 15:51:24,176 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-06-22 15:51:24,176 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 15:51:24,178 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 15:51:24,178 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 15:51:24,179 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 15:51:24,179 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 15:51:24,179 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:51:24,179 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 15:51:24,179 INFO ]: Interpolant automaton has 9 states. [2018-06-22 15:51:24,179 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 15:51:24,180 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 15:51:24,180 INFO ]: Found error trace [2018-06-22 15:51:24,180 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:51:24,180 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:51:24,180 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 15:51:24,180 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:51:24,180 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:51:24,181 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:24,181 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:51:24,181 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:24,232 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:51:24,446 WARN ]: Spent 104.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2018-06-22 15:51:24,743 WARN ]: Spent 151.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2018-06-22 15:51:24,786 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:51:24,786 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:51:24,786 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 15:51:24,803 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:51:24,876 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:51:24,876 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:51:24,879 INFO ]: Computing forward predicates... [2018-06-22 15:51:25,412 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 18 [2018-06-22 15:51:25,480 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:51:25,512 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:51:25,512 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 15:51:25,512 INFO ]: Interpolant automaton has 13 states [2018-06-22 15:51:25,513 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 15:51:25,513 INFO ]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-06-22 15:51:25,513 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 15:51:25,810 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:51:25,810 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 15:51:25,811 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 15:51:25,811 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 15:51:25,812 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:51:25,812 INFO ]: With dead ends: 17 [2018-06-22 15:51:25,812 INFO ]: Without dead ends: 17 [2018-06-22 15:51:25,813 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-06-22 15:51:25,813 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 15:51:25,815 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 15:51:25,816 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 15:51:25,816 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 15:51:25,816 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 15:51:25,816 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:51:25,816 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 15:51:25,816 INFO ]: Interpolant automaton has 13 states. [2018-06-22 15:51:25,816 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 15:51:25,817 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 15:51:25,817 INFO ]: Found error trace [2018-06-22 15:51:25,817 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:51:25,817 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:51:25,817 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 15:51:25,817 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:51:25,817 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:51:25,818 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:25,818 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:51:25,818 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:25,874 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:51:26,126 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:51:26,126 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:51:26,126 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 15:51:26,143 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 15:51:26,259 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 15:51:26,259 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:51:26,264 INFO ]: Computing forward predicates... [2018-06-22 15:51:26,820 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:51:26,841 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:51:26,842 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 15:51:26,842 INFO ]: Interpolant automaton has 17 states [2018-06-22 15:51:26,842 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 15:51:26,842 INFO ]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2018-06-22 15:51:26,842 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 15:51:27,187 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:51:27,187 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 15:51:27,188 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 15:51:27,188 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 15:51:27,188 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:51:27,188 INFO ]: With dead ends: 19 [2018-06-22 15:51:27,188 INFO ]: Without dead ends: 19 [2018-06-22 15:51:27,189 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2018-06-22 15:51:27,189 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 15:51:27,193 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 15:51:27,193 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 15:51:27,194 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 15:51:27,194 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 15:51:27,194 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:51:27,194 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 15:51:27,194 INFO ]: Interpolant automaton has 17 states. [2018-06-22 15:51:27,194 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 15:51:27,194 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 15:51:27,194 INFO ]: Found error trace [2018-06-22 15:51:27,195 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:51:27,195 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:51:27,195 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 15:51:27,195 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:51:27,195 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:51:27,196 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:27,196 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:51:27,196 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:27,270 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:51:28,186 WARN ]: Spent 592.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 17 [2018-06-22 15:51:28,602 WARN ]: Spent 343.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-06-22 15:51:29,049 WARN ]: Spent 434.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2018-06-22 15:51:29,308 WARN ]: Spent 246.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2018-06-22 15:51:29,500 WARN ]: Spent 142.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2018-06-22 15:51:29,675 WARN ]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2018-06-22 15:51:29,731 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 15:51:29,731 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:51:29,731 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 15:51:29,740 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 15:51:29,824 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 15:51:29,824 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:51:29,830 INFO ]: Computing forward predicates... [2018-06-22 15:51:30,426 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 15:51:30,446 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:51:30,446 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-06-22 15:51:30,447 INFO ]: Interpolant automaton has 21 states [2018-06-22 15:51:30,447 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 15:51:30,447 INFO ]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2018-06-22 15:51:30,447 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 21 states. [2018-06-22 15:51:30,837 WARN ]: Spent 315.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 113 [2018-06-22 15:51:31,538 WARN ]: Spent 635.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 115 [2018-06-22 15:51:32,145 WARN ]: Spent 569.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 116 [2018-06-22 15:51:32,508 WARN ]: Spent 318.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 106 [2018-06-22 15:51:32,954 WARN ]: Spent 406.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 109 [2018-06-22 15:51:34,018 WARN ]: Spent 309.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 104 [2018-06-22 15:51:34,054 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:51:34,054 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-22 15:51:34,055 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 15:51:34,055 INFO ]: Start accepts. Automaton has 21 states. Word has length 25 [2018-06-22 15:51:34,055 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:51:34,055 INFO ]: With dead ends: 23 [2018-06-22 15:51:34,055 INFO ]: Without dead ends: 23 [2018-06-22 15:51:34,056 INFO ]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2018-06-22 15:51:34,056 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 15:51:34,058 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 15:51:34,058 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 15:51:34,059 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 15:51:34,059 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 25 [2018-06-22 15:51:34,059 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:51:34,059 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 15:51:34,059 INFO ]: Interpolant automaton has 21 states. [2018-06-22 15:51:34,059 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 15:51:34,060 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 15:51:34,060 INFO ]: Found error trace [2018-06-22 15:51:34,060 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:51:34,060 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:51:34,060 INFO ]: Analyzing trace with hash -1661294575, now seen corresponding path program 5 times [2018-06-22 15:51:34,060 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:51:34,060 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:51:34,061 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:34,061 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:51:34,061 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:51:34,152 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:51:35,250 WARN ]: Spent 819.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2018-06-22 15:51:35,574 WARN ]: Spent 255.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2018-06-22 15:51:35,702 WARN ]: Spent 119.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2018-06-22 15:51:36,072 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 15:51:36,072 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:51:36,072 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 15:51:36,090 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 15:51:36,229 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-06-22 15:51:36,229 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:51:36,235 INFO ]: Computing forward predicates... [2018-06-22 15:51:36,820 INFO ]: Checked inductivity of 78 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-06-22 15:51:36,840 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:51:36,840 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 26 [2018-06-22 15:51:36,840 INFO ]: Interpolant automaton has 26 states [2018-06-22 15:51:36,841 INFO ]: Constructing interpolant automaton starting with 26 interpolants. [2018-06-22 15:51:36,841 INFO ]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2018-06-22 15:51:36,841 INFO ]: Start difference. First operand 23 states and 24 transitions. Second operand 26 states. [2018-06-22 15:51:37,084 WARN ]: Spent 172.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2018-06-22 15:51:37,492 WARN ]: Spent 244.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2018-06-22 15:51:37,821 WARN ]: Spent 305.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2018-06-22 15:51:38,095 WARN ]: Spent 224.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2018-06-22 15:51:38,341 WARN ]: Spent 220.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2018-06-22 15:51:38,589 WARN ]: Spent 221.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2018-06-22 15:51:38,868 WARN ]: Spent 223.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2018-06-22 15:51:39,132 WARN ]: Spent 234.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2018-06-22 15:51:39,141 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:51:39,141 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 15:51:39,141 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 15:51:39,141 INFO ]: Start accepts. Automaton has 26 states. Word has length 33 [2018-06-22 15:51:39,142 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:51:39,142 INFO ]: With dead ends: 21 [2018-06-22 15:51:39,142 INFO ]: Without dead ends: 0 [2018-06-22 15:51:39,142 INFO ]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=255, Invalid=935, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 15:51:39,143 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 15:51:39,143 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 15:51:39,143 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 15:51:39,143 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 15:51:39,143 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-06-22 15:51:39,143 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:51:39,143 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 15:51:39,143 INFO ]: Interpolant automaton has 26 states. [2018-06-22 15:51:39,143 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 15:51:39,143 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 15:51:39,148 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 03:51:39 BoogieIcfgContainer [2018-06-22 15:51:39,148 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 15:51:39,149 INFO ]: Toolchain (without parser) took 19026.38 ms. Allocated memory was 309.3 MB in the beginning and 535.8 MB in the end (delta: 226.5 MB). Free memory was 255.7 MB in the beginning and 453.1 MB in the end (delta: -197.4 MB). Peak memory consumption was 29.1 MB. Max. memory is 3.6 GB. [2018-06-22 15:51:39,149 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:51:39,150 INFO ]: ChcToBoogie took 55.69 ms. Allocated memory is still 309.3 MB. Free memory was 255.7 MB in the beginning and 253.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:51:39,150 INFO ]: Boogie Preprocessor took 53.84 ms. Allocated memory is still 309.3 MB. Free memory was 253.7 MB in the beginning and 251.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:51:39,151 INFO ]: RCFGBuilder took 335.60 ms. Allocated memory is still 309.3 MB. Free memory was 251.7 MB in the beginning and 235.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:51:39,151 INFO ]: TraceAbstraction took 18566.55 ms. Allocated memory was 309.3 MB in the beginning and 535.8 MB in the end (delta: 226.5 MB). Free memory was 235.7 MB in the beginning and 453.1 MB in the end (delta: -217.4 MB). Peak memory consumption was 9.1 MB. Max. memory is 3.6 GB. [2018-06-22 15:51:39,154 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 309.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 55.69 ms. Allocated memory is still 309.3 MB. Free memory was 255.7 MB in the beginning and 253.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 53.84 ms. Allocated memory is still 309.3 MB. Free memory was 253.7 MB in the beginning and 251.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 335.60 ms. Allocated memory is still 309.3 MB. Free memory was 251.7 MB in the beginning and 235.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 18566.55 ms. Allocated memory was 309.3 MB in the beginning and 535.8 MB in the end (delta: 226.5 MB). Free memory was 235.7 MB in the beginning and 453.1 MB in the end (delta: -217.4 MB). Peak memory consumption was 9.1 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, 18.5s OverallTime, 6 OverallIterations, 7 TraceHistogramMax, 7.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 SDtfs, 145 SDslu, 330 SDs, 0 SdLazy, 276 SolverSat, 190 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 13.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 0.8s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 227 NumberOfCodeBlocks, 227 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 41148 SizeOfPredicates, 158 NumberOfNonLiveVariables, 2553 ConjunctsInSsa, 190 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 84/296 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_2_e7_1027_e1_1047.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_15-51-39-163.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_2_e7_1027_e1_1047.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_15-51-39-163.csv Received shutdown request...