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/cav12/pc_sfifo_1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:09:17,296 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:09:17,301 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:09:17,314 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:09:17,314 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:09:17,315 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:09:17,316 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:09:17,321 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:09:17,322 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:09:17,324 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:09:17,325 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:09:17,325 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:09:17,326 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:09:17,330 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:09:17,331 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:09:17,331 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:09:17,333 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:09:17,346 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:09:17,348 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:09:17,349 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:09:17,350 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:09:17,352 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:09:17,352 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:09:17,352 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:09:17,353 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:09:17,359 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:09:17,360 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:09:17,360 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:09:17,361 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:09:17,362 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:09:17,362 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:09:17,364 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:09:17,364 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:09:17,365 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:09:17,365 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:09:17,366 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 14:09:17,383 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:09:17,383 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:09:17,383 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:09:17,384 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:09:17,384 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:09:17,385 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:09:17,386 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:09:17,386 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:09:17,386 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:09:17,386 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:09:17,387 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:09:17,387 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:09:17,387 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:09:17,387 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:09:17,387 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:09:17,387 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:09:17,388 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:09:17,388 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:09:17,388 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:09:17,390 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:09:17,390 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:09:17,444 INFO ]: Repository-Root is: /tmp [2018-06-22 14:09:17,459 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:09:17,464 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:09:17,466 INFO ]: Initializing SmtParser... [2018-06-22 14:09:17,466 INFO ]: SmtParser initialized [2018-06-22 14:09:17,467 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/pc_sfifo_1.smt2 [2018-06-22 14:09:17,468 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 14:09:17,545 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/pc_sfifo_1.smt2 unknown [2018-06-22 14:09:17,998 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/pc_sfifo_1.smt2 [2018-06-22 14:09:18,002 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:09:18,017 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:09:18,018 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:09:18,018 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:09:18,018 INFO ]: ChcToBoogie initialized [2018-06-22 14:09:18,021 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:09:18" (1/1) ... [2018-06-22 14:09:18,070 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:18 Unit [2018-06-22 14:09:18,070 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:09:18,071 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:09:18,071 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:09:18,071 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:09:18,093 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:18" (1/1) ... [2018-06-22 14:09:18,093 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:18" (1/1) ... [2018-06-22 14:09:18,104 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:18" (1/1) ... [2018-06-22 14:09:18,104 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:18" (1/1) ... [2018-06-22 14:09:18,115 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:18" (1/1) ... [2018-06-22 14:09:18,116 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:18" (1/1) ... [2018-06-22 14:09:18,119 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:18" (1/1) ... [2018-06-22 14:09:18,123 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:09:18,124 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:09:18,124 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:09:18,124 INFO ]: RCFGBuilder initialized [2018-06-22 14:09:18,125 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:18" (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 14:09:18,138 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:09:18,138 INFO ]: Found specification of procedure False [2018-06-22 14:09:18,138 INFO ]: Found implementation of procedure False [2018-06-22 14:09:18,138 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:09:18,138 INFO ]: Found specification of procedure state [2018-06-22 14:09:18,138 INFO ]: Found implementation of procedure state [2018-06-22 14:09:18,138 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:09:18,138 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:09:18,138 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 14:09:18,477 INFO ]: Using library mode [2018-06-22 14:09:18,477 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:09:18 BoogieIcfgContainer [2018-06-22 14:09:18,477 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:09:18,480 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:09:18,480 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:09:18,485 INFO ]: TraceAbstraction initialized [2018-06-22 14:09:18,486 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:09:18" (1/3) ... [2018-06-22 14:09:18,487 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e11ffad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:09:18, skipping insertion in model container [2018-06-22 14:09:18,487 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:09:18" (2/3) ... [2018-06-22 14:09:18,487 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e11ffad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:09:18, skipping insertion in model container [2018-06-22 14:09:18,487 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:09:18" (3/3) ... [2018-06-22 14:09:18,490 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:09:18,501 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:09:18,512 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:09:18,558 INFO ]: Using default assertion order modulation [2018-06-22 14:09:18,558 INFO ]: Interprodecural is true [2018-06-22 14:09:18,558 INFO ]: Hoare is false [2018-06-22 14:09:18,558 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:09:18,558 INFO ]: Backedges is TWOTRACK [2018-06-22 14:09:18,559 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:09:18,559 INFO ]: Difference is false [2018-06-22 14:09:18,559 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:09:18,559 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:09:18,576 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:09:18,587 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:09:18,587 INFO ]: Found error trace [2018-06-22 14:09:18,588 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:09:18,588 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:09:18,592 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 14:09:18,593 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:09:18,593 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:09:18,626 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:09:18,626 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:09:18,626 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:09:18,672 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:09:18,777 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:09:18,780 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:09:18,780 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:09:18,782 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:09:18,800 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:09:18,800 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:09:18,803 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:09:18,914 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:09:18,914 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:09:18,915 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:09:18,916 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:09:18,917 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:09:18,927 INFO ]: With dead ends: 13 [2018-06-22 14:09:18,927 INFO ]: Without dead ends: 13 [2018-06-22 14:09:18,929 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 14:09:18,944 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:09:18,968 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:09:18,969 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:09:18,969 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:09:18,970 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:09:18,970 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:09:18,971 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:09:18,971 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:09:18,971 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:09:18,972 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:09:18,972 INFO ]: Found error trace [2018-06-22 14:09:18,972 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:09:18,972 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:09:18,972 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 14:09:18,972 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:09:18,972 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:09:18,973 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:09:18,973 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:09:18,973 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:09:19,102 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:09:19,476 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:09:19,476 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:09:19,476 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 14:09:19,482 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:09:19,568 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:09:19,582 INFO ]: Computing forward predicates... [2018-06-22 14:09:21,584 WARN ]: Spent 1.42 s on a formula simplification. DAG size of input: 29 DAG size of output: 19 [2018-06-22 14:09:21,710 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:09:21,732 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:09:21,732 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 14:09:21,732 INFO ]: Interpolant automaton has 10 states [2018-06-22 14:09:21,732 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 14:09:21,733 INFO ]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-06-22 14:09:21,733 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 10 states. [2018-06-22 14:09:21,958 WARN ]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-06-22 14:09:22,122 WARN ]: Spent 124.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2018-06-22 14:09:22,140 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:09:22,140 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 14:09:22,141 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 14:09:22,141 INFO ]: Start accepts. Automaton has 10 states. Word has length 13 [2018-06-22 14:09:22,141 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:09:22,142 INFO ]: With dead ends: 15 [2018-06-22 14:09:22,142 INFO ]: Without dead ends: 15 [2018-06-22 14:09:22,142 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-06-22 14:09:22,143 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 14:09:22,145 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 14:09:22,145 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 14:09:22,146 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 14:09:22,146 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 14:09:22,146 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:09:22,146 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 14:09:22,146 INFO ]: Interpolant automaton has 10 states. [2018-06-22 14:09:22,146 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 14:09:22,147 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 14:09:22,147 INFO ]: Found error trace [2018-06-22 14:09:22,147 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:09:22,147 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:09:22,147 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 14:09:22,147 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:09:22,147 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:09:22,148 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:09:22,148 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:09:22,148 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:09:22,246 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:09:22,583 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:09:22,583 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:09:22,616 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 14:09:22,624 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:09:22,703 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:09:22,703 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:09:22,709 INFO ]: Computing forward predicates... [2018-06-22 14:09:23,230 WARN ]: Spent 172.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 18 [2018-06-22 14:09:23,293 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:09:23,313 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:09:23,313 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 14:09:23,313 INFO ]: Interpolant automaton has 13 states [2018-06-22 14:09:23,313 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 14:09:23,313 INFO ]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-06-22 14:09:23,314 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 14:09:23,593 WARN ]: Spent 108.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 22 [2018-06-22 14:09:23,710 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:09:23,710 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 14:09:23,710 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 14:09:23,710 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 14:09:23,710 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:09:23,711 INFO ]: With dead ends: 19 [2018-06-22 14:09:23,711 INFO ]: Without dead ends: 19 [2018-06-22 14:09:23,711 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-06-22 14:09:23,711 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 14:09:23,714 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 14:09:23,714 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 14:09:23,715 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 14:09:23,715 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2018-06-22 14:09:23,715 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:09:23,715 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 14:09:23,715 INFO ]: Interpolant automaton has 13 states. [2018-06-22 14:09:23,715 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 14:09:23,716 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 14:09:23,716 INFO ]: Found error trace [2018-06-22 14:09:23,716 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:09:23,716 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:09:23,716 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 3 times [2018-06-22 14:09:23,716 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:09:23,716 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:09:23,717 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:09:23,717 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:09:23,717 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:09:23,831 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:09:24,143 WARN ]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 14:09:24,389 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:09:24,389 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:09:24,389 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 14:09:24,403 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 14:09:24,558 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-22 14:09:24,558 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:09:24,570 INFO ]: Computing forward predicates... [2018-06-22 14:09:24,859 WARN ]: Spent 193.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2018-06-22 14:09:25,679 WARN ]: Spent 569.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2018-06-22 14:09:26,376 WARN ]: Spent 600.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-06-22 14:09:31,682 WARN ]: Spent 4.79 s on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2018-06-22 14:09:32,528 WARN ]: Spent 240.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-06-22 14:09:32,710 INFO ]: Checked inductivity of 36 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:09:32,730 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:09:32,756 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-06-22 14:09:32,756 INFO ]: Interpolant automaton has 21 states [2018-06-22 14:09:32,756 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 14:09:32,756 INFO ]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2018-06-22 14:09:32,757 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 21 states. [2018-06-22 14:09:33,471 WARN ]: Spent 655.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2018-06-22 14:09:33,972 WARN ]: Spent 200.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 47 [2018-06-22 14:09:34,566 WARN ]: Spent 542.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-06-22 14:09:34,601 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:09:34,601 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 14:09:34,603 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 14:09:34,603 INFO ]: Start accepts. Automaton has 21 states. Word has length 25 [2018-06-22 14:09:34,603 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:09:34,604 INFO ]: With dead ends: 21 [2018-06-22 14:09:34,604 INFO ]: Without dead ends: 21 [2018-06-22 14:09:34,604 INFO ]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2018-06-22 14:09:34,604 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 14:09:34,607 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 14:09:34,607 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 14:09:34,608 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 14:09:34,608 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 14:09:34,608 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:09:34,608 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 14:09:34,608 INFO ]: Interpolant automaton has 21 states. [2018-06-22 14:09:34,608 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 14:09:34,609 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 14:09:34,609 INFO ]: Found error trace [2018-06-22 14:09:34,609 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:09:34,609 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:09:34,609 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 4 times [2018-06-22 14:09:34,609 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:09:34,609 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:09:34,610 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:09:34,610 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:09:34,610 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:09:34,719 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:09:35,093 WARN ]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 14:09:35,957 WARN ]: Spent 815.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-06-22 14:09:36,417 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:09:36,417 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:09:36,417 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 14:09:36,422 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 14:09:36,535 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 14:09:36,535 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:09:36,546 INFO ]: Computing forward predicates... [2018-06-22 14:09:37,008 WARN ]: Spent 189.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2018-06-22 14:09:37,743 WARN ]: Spent 207.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 27 [2018-06-22 14:09:38,231 WARN ]: Spent 395.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2018-06-22 14:09:38,998 WARN ]: Spent 576.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-06-22 14:09:39,873 WARN ]: Spent 626.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2018-06-22 14:09:40,085 INFO ]: Checked inductivity of 55 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:09:40,106 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:09:40,106 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2018-06-22 14:09:40,106 INFO ]: Interpolant automaton has 25 states [2018-06-22 14:09:40,106 INFO ]: Constructing interpolant automaton starting with 25 interpolants. [2018-06-22 14:09:40,107 INFO ]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2018-06-22 14:09:40,107 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 25 states. [2018-06-22 14:09:40,777 WARN ]: Spent 628.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2018-06-22 14:09:41,260 WARN ]: Spent 123.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 32 [2018-06-22 14:09:41,835 WARN ]: Spent 538.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 74 [2018-06-22 14:09:42,299 WARN ]: Spent 399.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 76 [2018-06-22 14:09:42,843 WARN ]: Spent 503.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2018-06-22 14:09:43,000 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:09:43,000 INFO ]: Finished difference Result 25 states and 26 transitions. [2018-06-22 14:09:43,000 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 14:09:43,000 INFO ]: Start accepts. Automaton has 25 states. Word has length 29 [2018-06-22 14:09:43,001 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:09:43,001 INFO ]: With dead ends: 25 [2018-06-22 14:09:43,001 INFO ]: Without dead ends: 25 [2018-06-22 14:09:43,001 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2018-06-22 14:09:43,001 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 14:09:43,004 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-22 14:09:43,004 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 14:09:43,005 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-06-22 14:09:43,005 INFO ]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 29 [2018-06-22 14:09:43,005 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:09:43,005 INFO ]: Abstraction has 25 states and 26 transitions. [2018-06-22 14:09:43,005 INFO ]: Interpolant automaton has 25 states. [2018-06-22 14:09:43,005 INFO ]: Start isEmpty. Operand 25 states and 26 transitions. [2018-06-22 14:09:43,006 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 14:09:43,006 INFO ]: Found error trace [2018-06-22 14:09:43,006 INFO ]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:09:43,006 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:09:43,006 INFO ]: Analyzing trace with hash -1494134477, now seen corresponding path program 5 times [2018-06-22 14:09:43,006 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:09:43,006 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:09:43,007 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:09:43,007 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:09:43,007 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:09:43,163 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:09:43,546 WARN ]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 14:09:43,864 WARN ]: Spent 122.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-06-22 14:09:44,468 INFO ]: Checked inductivity of 105 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 14:09:44,468 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:09:44,469 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 14:09:44,477 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 14:09:44,663 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-06-22 14:09:44,663 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:09:44,678 INFO ]: Computing forward predicates... [2018-06-22 14:09:45,205 WARN ]: Spent 420.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2018-06-22 14:09:45,514 WARN ]: Spent 252.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2018-06-22 14:09:46,031 WARN ]: Spent 299.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2018-06-22 14:09:46,707 WARN ]: Spent 596.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2018-06-22 14:09:47,373 WARN ]: Spent 542.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2018-06-22 14:09:48,594 WARN ]: Spent 1.11 s on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2018-06-22 14:09:49,450 WARN ]: Spent 723.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2018-06-22 14:09:49,903 INFO ]: Checked inductivity of 105 backedges. 17 proven. 60 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 14:09:49,933 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:09:49,933 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2018-06-22 14:09:49,934 INFO ]: Interpolant automaton has 33 states [2018-06-22 14:09:49,934 INFO ]: Constructing interpolant automaton starting with 33 interpolants. [2018-06-22 14:09:49,934 INFO ]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2018-06-22 14:09:49,935 INFO ]: Start difference. First operand 25 states and 26 transitions. Second operand 33 states. [2018-06-22 14:09:50,818 WARN ]: Spent 829.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 95 [2018-06-22 14:09:50,990 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 29 [2018-06-22 14:09:51,156 WARN ]: Spent 121.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 34 [2018-06-22 14:09:51,334 WARN ]: Spent 112.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 34 [2018-06-22 14:09:51,605 WARN ]: Spent 224.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 41 [2018-06-22 14:09:51,999 WARN ]: Spent 343.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 52 [2018-06-22 14:09:52,872 WARN ]: Spent 815.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 72 [2018-06-22 14:09:53,718 WARN ]: Spent 734.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 91 [2018-06-22 14:09:53,786 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:09:53,786 INFO ]: Finished difference Result 27 states and 28 transitions. [2018-06-22 14:09:53,787 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 14:09:53,787 INFO ]: Start accepts. Automaton has 33 states. Word has length 37 [2018-06-22 14:09:53,787 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:09:53,788 INFO ]: With dead ends: 27 [2018-06-22 14:09:53,788 INFO ]: Without dead ends: 27 [2018-06-22 14:09:53,789 INFO ]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=319, Invalid=1321, Unknown=0, NotChecked=0, Total=1640 [2018-06-22 14:09:53,789 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 14:09:53,792 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-22 14:09:53,792 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 14:09:53,794 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-06-22 14:09:53,794 INFO ]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 37 [2018-06-22 14:09:53,794 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:09:53,794 INFO ]: Abstraction has 27 states and 28 transitions. [2018-06-22 14:09:53,794 INFO ]: Interpolant automaton has 33 states. [2018-06-22 14:09:53,794 INFO ]: Start isEmpty. Operand 27 states and 28 transitions. [2018-06-22 14:09:53,795 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 14:09:53,795 INFO ]: Found error trace [2018-06-22 14:09:53,795 INFO ]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:09:53,795 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:09:53,795 INFO ]: Analyzing trace with hash 1618126293, now seen corresponding path program 6 times [2018-06-22 14:09:53,795 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:09:53,795 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:09:53,796 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:09:53,796 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:09:53,796 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:09:53,949 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:09:54,366 WARN ]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 14:09:54,704 WARN ]: Spent 295.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-06-22 14:09:54,825 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2018-06-22 14:09:54,950 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-06-22 14:09:55,149 WARN ]: Spent 186.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-06-22 14:09:55,362 WARN ]: Spent 175.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2018-06-22 14:09:55,476 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2018-06-22 14:09:55,973 WARN ]: Spent 104.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2018-06-22 14:09:56,099 INFO ]: Checked inductivity of 136 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-22 14:09:56,099 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:09:56,099 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:09:56,104 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 14:09:56,310 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-06-22 14:09:56,310 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:09:56,324 INFO ]: Computing forward predicates... [2018-06-22 14:09:56,548 WARN ]: Spent 161.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2018-06-22 14:09:56,893 WARN ]: Spent 293.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2018-06-22 14:09:57,268 WARN ]: Spent 309.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2018-06-22 14:09:58,109 WARN ]: Spent 459.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2018-06-22 14:09:58,823 WARN ]: Spent 625.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-06-22 14:10:00,046 WARN ]: Spent 999.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2018-06-22 14:10:01,249 WARN ]: Spent 933.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2018-06-22 14:10:02,261 WARN ]: Spent 888.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2018-06-22 14:10:03,120 INFO ]: Checked inductivity of 136 backedges. 22 proven. 78 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-22 14:10:03,141 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:10:03,141 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 36 [2018-06-22 14:10:03,141 INFO ]: Interpolant automaton has 36 states [2018-06-22 14:10:03,141 INFO ]: Constructing interpolant automaton starting with 36 interpolants. [2018-06-22 14:10:03,142 INFO ]: CoverageRelationStatistics Valid=171, Invalid=1089, Unknown=0, NotChecked=0, Total=1260 [2018-06-22 14:10:03,142 INFO ]: Start difference. First operand 27 states and 28 transitions. Second operand 36 states. [2018-06-22 14:10:03,915 WARN ]: Spent 179.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 43 [2018-06-22 14:10:04,333 WARN ]: Spent 365.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 53 [2018-06-22 14:10:04,639 WARN ]: Spent 254.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2018-06-22 14:10:04,910 WARN ]: Spent 221.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 48 [2018-06-22 14:10:05,762 WARN ]: Spent 797.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2018-06-22 14:10:05,813 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:10:05,813 INFO ]: Finished difference Result 29 states and 30 transitions. [2018-06-22 14:10:05,813 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 14:10:05,813 INFO ]: Start accepts. Automaton has 36 states. Word has length 41 [2018-06-22 14:10:05,814 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:10:05,814 INFO ]: With dead ends: 29 [2018-06-22 14:10:05,814 INFO ]: Without dead ends: 29 [2018-06-22 14:10:05,815 INFO ]: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=354, Invalid=1538, Unknown=0, NotChecked=0, Total=1892 [2018-06-22 14:10:05,815 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-22 14:10:05,820 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-06-22 14:10:05,820 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-22 14:10:05,821 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-06-22 14:10:05,821 INFO ]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 41 [2018-06-22 14:10:05,822 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:10:05,822 INFO ]: Abstraction has 29 states and 30 transitions. [2018-06-22 14:10:05,822 INFO ]: Interpolant automaton has 36 states. [2018-06-22 14:10:05,822 INFO ]: Start isEmpty. Operand 29 states and 30 transitions. [2018-06-22 14:10:05,823 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 14:10:05,823 INFO ]: Found error trace [2018-06-22 14:10:05,823 INFO ]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:10:05,823 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:10:05,823 INFO ]: Analyzing trace with hash 996918775, now seen corresponding path program 7 times [2018-06-22 14:10:05,823 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:10:05,823 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:10:05,824 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:10:05,824 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:10:05,824 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:10:06,013 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:10:06,445 WARN ]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 14:10:06,661 WARN ]: Spent 170.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-06-22 14:10:06,774 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2018-06-22 14:10:06,941 WARN ]: Spent 157.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-06-22 14:10:07,089 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-06-22 14:10:07,246 WARN ]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2018-06-22 14:10:07,475 WARN ]: Spent 203.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2018-06-22 14:10:08,362 INFO ]: Checked inductivity of 171 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-06-22 14:10:08,362 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:10:08,362 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:10:08,372 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:10:08,552 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:10:08,567 INFO ]: Computing forward predicates... [2018-06-22 14:10:08,934 WARN ]: Spent 186.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2018-06-22 14:10:09,286 WARN ]: Spent 279.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2018-06-22 14:10:09,939 WARN ]: Spent 559.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2018-06-22 14:10:10,640 WARN ]: Spent 600.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2018-06-22 14:10:11,234 WARN ]: Spent 508.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-06-22 14:10:12,301 WARN ]: Spent 965.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2018-06-22 14:10:13,553 WARN ]: Spent 1.13 s on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2018-06-22 14:10:14,568 WARN ]: Spent 889.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2018-06-22 14:10:15,528 WARN ]: Spent 863.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2018-06-22 14:10:16,725 INFO ]: Checked inductivity of 171 backedges. 29 proven. 97 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-06-22 14:10:16,746 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:10:16,746 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 40 [2018-06-22 14:10:16,747 INFO ]: Interpolant automaton has 40 states [2018-06-22 14:10:16,747 INFO ]: Constructing interpolant automaton starting with 40 interpolants. [2018-06-22 14:10:16,747 INFO ]: CoverageRelationStatistics Valid=209, Invalid=1351, Unknown=0, NotChecked=0, Total=1560 [2018-06-22 14:10:16,747 INFO ]: Start difference. First operand 29 states and 30 transitions. Second operand 40 states. Received shutdown request... [2018-06-22 14:10:16,996 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 14:10:16,996 WARN ]: Verification canceled [2018-06-22 14:10:17,001 WARN ]: Timeout [2018-06-22 14:10:17,001 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:10:17 BoogieIcfgContainer [2018-06-22 14:10:17,001 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 14:10:17,002 INFO ]: Toolchain (without parser) took 58999.23 ms. Allocated memory was 308.3 MB in the beginning and 775.4 MB in the end (delta: 467.1 MB). Free memory was 246.8 MB in the beginning and 334.0 MB in the end (delta: -87.2 MB). Peak memory consumption was 380.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:10:17,003 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 308.3 MB. Free memory is still 273.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 14:10:17,005 INFO ]: ChcToBoogie took 52.14 ms. Allocated memory is still 308.3 MB. Free memory was 246.8 MB in the beginning and 244.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:10:17,005 INFO ]: Boogie Preprocessor took 52.71 ms. Allocated memory is still 308.3 MB. Free memory was 243.9 MB in the beginning and 242.9 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. [2018-06-22 14:10:17,006 INFO ]: RCFGBuilder took 353.59 ms. Allocated memory is still 308.3 MB. Free memory was 242.9 MB in the beginning and 220.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 3.6 GB. [2018-06-22 14:10:17,006 INFO ]: TraceAbstraction took 58520.86 ms. Allocated memory was 308.3 MB in the beginning and 775.4 MB in the end (delta: 467.1 MB). Free memory was 220.9 MB in the beginning and 334.0 MB in the end (delta: -113.1 MB). Peak memory consumption was 354.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:10:17,008 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 308.3 MB. Free memory is still 273.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 52.14 ms. Allocated memory is still 308.3 MB. Free memory was 246.8 MB in the beginning and 244.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 52.71 ms. Allocated memory is still 308.3 MB. Free memory was 243.9 MB in the beginning and 242.9 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. * RCFGBuilder took 353.59 ms. Allocated memory is still 308.3 MB. Free memory was 242.9 MB in the beginning and 220.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 3.6 GB. * TraceAbstraction took 58520.86 ms. Allocated memory was 308.3 MB in the beginning and 775.4 MB in the end (delta: 467.1 MB). Free memory was 220.9 MB in the beginning and 334.0 MB in the end (delta: -113.1 MB). Peak memory consumption was 354.0 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was constructing difference of abstraction (29states) and interpolant automaton (currently 6 states, 40 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 41 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 58.4s OverallTime, 8 OverallIterations, 10 TraceHistogramMax, 12.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 97 SDtfs, 295 SDslu, 592 SDs, 0 SdLazy, 539 SolverSat, 365 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 341 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1067 ImplicationChecksByTransitivity, 48.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=7, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 43.5s InterpolantComputationTime, 423 NumberOfCodeBlocks, 423 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 655632 SizeOfPredicates, 2893 NumberOfNonLiveVariables, 3502 ConjunctsInSsa, 355 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 351/1032 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/pc_sfifo_1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_14-10-17-021.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/pc_sfifo_1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_14-10-17-021.csv Completed graceful shutdown