java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:00:59,041 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:00:59,043 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:00:59,054 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:00:59,055 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:00:59,056 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:00:59,059 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:00:59,061 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:00:59,062 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:00:59,063 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:00:59,065 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:00:59,065 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:00:59,066 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:00:59,067 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:00:59,068 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:00:59,071 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:00:59,073 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:00:59,086 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:00:59,088 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:00:59,089 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:00:59,090 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:00:59,092 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:00:59,092 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:00:59,092 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:00:59,093 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:00:59,101 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:00:59,102 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:00:59,103 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:00:59,104 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:00:59,104 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:00:59,105 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:00:59,105 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:00:59,106 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:00:59,106 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:00:59,107 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:00:59,107 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:00:59,132 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:00:59,132 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:00:59,134 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:00:59,134 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:00:59,135 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:00:59,136 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:00:59,136 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:00:59,136 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:00:59,136 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:00:59,137 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:00:59,137 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:00:59,137 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:00:59,137 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:00:59,137 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:00:59,137 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:00:59,138 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:00:59,141 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:00:59,142 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:00:59,143 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:00:59,204 INFO ]: Repository-Root is: /tmp [2018-06-22 05:00:59,221 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:00:59,227 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:00:59,229 INFO ]: Initializing SmtParser... [2018-06-22 05:00:59,230 INFO ]: SmtParser initialized [2018-06-22 05:00:59,230 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.4.smt2 [2018-06-22 05:00:59,232 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 05:00:59,328 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.4.smt2 unknown [2018-06-22 05:01:00,504 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.4.smt2 [2018-06-22 05:01:00,508 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:01:00,521 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:01:00,522 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:01:00,522 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:01:00,522 INFO ]: ChcToBoogie initialized [2018-06-22 05:01:00,525 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:01:00" (1/1) ... [2018-06-22 05:01:00,647 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:01:00 Unit [2018-06-22 05:01:00,647 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:01:00,648 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:01:00,648 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:01:00,648 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:01:00,668 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:01:00" (1/1) ... [2018-06-22 05:01:00,668 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:01:00" (1/1) ... [2018-06-22 05:01:00,699 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:01:00" (1/1) ... [2018-06-22 05:01:00,699 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:01:00" (1/1) ... [2018-06-22 05:01:00,722 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:01:00" (1/1) ... [2018-06-22 05:01:00,723 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:01:00" (1/1) ... [2018-06-22 05:01:00,730 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:01:00" (1/1) ... [2018-06-22 05:01:00,738 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:01:00,739 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:01:00,739 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:01:00,739 INFO ]: RCFGBuilder initialized [2018-06-22 05:01:00,739 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:01:00" (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 05:01:00,762 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:01:00,762 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:01:00,762 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:01:00,762 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:01:00,762 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:01:00,762 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 05:01:01,523 INFO ]: Using library mode [2018-06-22 05:01:01,524 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:01:01 BoogieIcfgContainer [2018-06-22 05:01:01,524 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:01:01,525 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:01:01,525 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:01:01,531 INFO ]: TraceAbstraction initialized [2018-06-22 05:01:01,532 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:01:00" (1/3) ... [2018-06-22 05:01:01,532 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4ef1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:01:01, skipping insertion in model container [2018-06-22 05:01:01,533 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:01:00" (2/3) ... [2018-06-22 05:01:01,533 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4ef1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:01:01, skipping insertion in model container [2018-06-22 05:01:01,533 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:01:01" (3/3) ... [2018-06-22 05:01:01,535 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:01:01,546 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:01:01,561 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:01:01,610 INFO ]: Using default assertion order modulation [2018-06-22 05:01:01,611 INFO ]: Interprodecural is true [2018-06-22 05:01:01,611 INFO ]: Hoare is false [2018-06-22 05:01:01,611 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:01:01,611 INFO ]: Backedges is TWOTRACK [2018-06-22 05:01:01,611 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:01:01,611 INFO ]: Difference is false [2018-06-22 05:01:01,611 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:01:01,611 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:01:01,626 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:01:01,642 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:01:01,642 INFO ]: Found error trace [2018-06-22 05:01:01,645 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:01:01,645 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:01:01,653 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 05:01:01,655 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:01:01,655 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:01:01,689 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:01:01,689 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:01:01,689 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:01:01,820 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:01:02,000 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:01:02,003 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:01:02,003 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:01:02,005 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:01:02,022 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:01:02,022 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:01:02,026 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:01:02,159 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:01:02,159 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:01:02,160 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:01:02,161 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:01:02,161 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:01:02,174 INFO ]: With dead ends: 9 [2018-06-22 05:01:02,174 INFO ]: Without dead ends: 9 [2018-06-22 05:01:02,177 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:01:02,199 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:01:02,220 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:01:02,221 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:01:02,223 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:01:02,225 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:01:02,225 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:01:02,225 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:01:02,225 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:01:02,225 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:01:02,225 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:01:02,225 INFO ]: Found error trace [2018-06-22 05:01:02,225 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:01:02,226 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:01:02,226 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 05:01:02,226 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:01:02,227 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:01:02,227 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:01:02,227 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:01:02,227 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:01:02,428 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:01:02,852 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:01:02,852 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:01:02,852 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 05:01:02,868 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:01:03,154 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:01:03,177 INFO ]: Computing forward predicates... [2018-06-22 05:01:03,443 WARN ]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 05:01:03,937 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:01:03,972 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:01:03,972 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 05:01:03,973 INFO ]: Interpolant automaton has 5 states [2018-06-22 05:01:03,973 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 05:01:03,973 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:01:03,973 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 05:01:04,164 WARN ]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 05:01:04,281 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:01:04,281 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 05:01:04,282 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 05:01:04,282 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 05:01:04,282 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:01:04,282 INFO ]: With dead ends: 10 [2018-06-22 05:01:04,282 INFO ]: Without dead ends: 10 [2018-06-22 05:01:04,283 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:01:04,283 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 05:01:04,284 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 05:01:04,284 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 05:01:04,285 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 05:01:04,285 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 05:01:04,285 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:01:04,285 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 05:01:04,285 INFO ]: Interpolant automaton has 5 states. [2018-06-22 05:01:04,285 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 05:01:04,285 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 05:01:04,285 INFO ]: Found error trace [2018-06-22 05:01:04,285 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:01:04,285 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:01:04,285 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 05:01:04,285 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:01:04,285 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:01:04,287 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:01:04,287 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:01:04,287 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:01:04,488 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:01:05,026 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:01:05,026 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:01:05,026 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 05:01:05,034 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 05:01:05,511 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:01:05,512 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:01:05,541 INFO ]: Computing forward predicates... [2018-06-22 05:01:06,744 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:01:06,773 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:01:06,773 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 05:01:06,773 INFO ]: Interpolant automaton has 8 states [2018-06-22 05:01:06,773 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 05:01:06,773 INFO ]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:01:06,774 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-22 05:01:06,947 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:01:06,947 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 05:01:06,948 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 05:01:06,948 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-22 05:01:06,948 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:01:06,948 INFO ]: With dead ends: 12 [2018-06-22 05:01:06,948 INFO ]: Without dead ends: 12 [2018-06-22 05:01:06,949 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2018-06-22 05:01:06,949 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 05:01:06,950 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 05:01:06,950 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 05:01:06,950 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 05:01:06,950 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-06-22 05:01:06,950 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:01:06,951 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 05:01:06,951 INFO ]: Interpolant automaton has 8 states. [2018-06-22 05:01:06,951 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 05:01:06,951 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 05:01:06,951 INFO ]: Found error trace [2018-06-22 05:01:06,951 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:01:06,951 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:01:06,951 INFO ]: Analyzing trace with hash 201204236, now seen corresponding path program 3 times [2018-06-22 05:01:06,951 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:01:06,951 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:01:06,952 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:01:06,952 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:01:06,952 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:01:07,293 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:01:08,574 WARN ]: Spent 395.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-06-22 05:01:08,854 WARN ]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 05:01:09,110 WARN ]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 05:01:09,111 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:01:09,111 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:01:09,111 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 05:01:09,120 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:01:09,621 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 05:01:09,622 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:01:09,658 INFO ]: Computing forward predicates... [2018-06-22 05:01:17,429 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:01:17,456 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:01:17,456 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-06-22 05:01:17,456 INFO ]: Interpolant automaton has 12 states [2018-06-22 05:01:17,456 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 05:01:17,456 INFO ]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-06-22 05:01:17,456 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2018-06-22 05:01:17,849 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:01:17,849 INFO ]: Finished difference Result 16 states and 16 transitions. [2018-06-22 05:01:17,849 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 05:01:17,849 INFO ]: Start accepts. Automaton has 12 states. Word has length 11 [2018-06-22 05:01:17,849 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:01:17,849 INFO ]: With dead ends: 16 [2018-06-22 05:01:17,849 INFO ]: Without dead ends: 16 [2018-06-22 05:01:17,850 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2018-06-22 05:01:17,850 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-22 05:01:17,851 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-22 05:01:17,851 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-22 05:01:17,852 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-06-22 05:01:17,852 INFO ]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2018-06-22 05:01:17,852 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:01:17,852 INFO ]: Abstraction has 16 states and 16 transitions. [2018-06-22 05:01:17,852 INFO ]: Interpolant automaton has 12 states. [2018-06-22 05:01:17,852 INFO ]: Start isEmpty. Operand 16 states and 16 transitions. [2018-06-22 05:01:17,853 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-22 05:01:17,853 INFO ]: Found error trace [2018-06-22 05:01:17,853 INFO ]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:01:17,853 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:01:17,853 INFO ]: Analyzing trace with hash 1051911180, now seen corresponding path program 4 times [2018-06-22 05:01:17,853 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:01:17,853 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:01:17,854 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:01:17,854 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:01:17,854 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:01:18,650 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:01:20,215 WARN ]: Spent 376.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-06-22 05:01:20,600 WARN ]: Spent 314.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 21 [2018-06-22 05:01:20,882 WARN ]: Spent 270.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2018-06-22 05:01:21,015 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2018-06-22 05:01:21,173 WARN ]: Spent 140.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-06-22 05:01:21,402 WARN ]: Spent 109.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2018-06-22 05:01:21,419 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:01:21,419 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:01:21,419 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 05:01:21,435 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown