java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_4_e8_420_e7_572.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 10:03:18,990 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 10:03:18,994 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 10:03:19,004 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 10:03:19,005 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 10:03:19,006 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 10:03:19,007 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 10:03:19,008 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 10:03:19,010 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 10:03:19,011 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 10:03:19,011 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 10:03:19,012 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 10:03:19,012 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 10:03:19,016 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 10:03:19,017 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 10:03:19,018 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 10:03:19,021 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 10:03:19,023 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 10:03:19,024 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 10:03:19,025 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 10:03:19,026 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 10:03:19,029 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 10:03:19,029 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 10:03:19,029 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 10:03:19,030 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 10:03:19,031 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 10:03:19,032 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 10:03:19,033 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 10:03:19,034 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 10:03:19,034 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 10:03:19,035 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 10:03:19,035 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 10:03:19,036 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 10:03:19,037 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 10:03:19,037 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 10:03:19,038 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 10:03:19,050 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 10:03:19,051 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 10:03:19,051 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 10:03:19,051 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 10:03:19,052 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 10:03:19,053 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 10:03:19,053 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 10:03:19,053 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 10:03:19,053 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 10:03:19,054 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 10:03:19,054 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 10:03:19,054 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 10:03:19,054 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 10:03:19,055 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 10:03:19,055 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 10:03:19,055 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 10:03:19,055 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 10:03:19,057 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 10:03:19,057 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 10:03:19,114 INFO ]: Repository-Root is: /tmp [2018-06-22 10:03:19,130 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 10:03:19,137 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 10:03:19,139 INFO ]: Initializing SmtParser... [2018-06-22 10:03:19,139 INFO ]: SmtParser initialized [2018-06-22 10:03:19,140 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_4_e8_420_e7_572.smt2 [2018-06-22 10:03:19,141 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 10:03:19,246 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_4_e8_420_e7_572.smt2 unknown [2018-06-22 10:03:19,582 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_4_e8_420_e7_572.smt2 [2018-06-22 10:03:19,586 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 10:03:19,591 INFO ]: Walking toolchain with 4 elements. [2018-06-22 10:03:19,592 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 10:03:19,592 INFO ]: Initializing ChcToBoogie... [2018-06-22 10:03:19,592 INFO ]: ChcToBoogie initialized [2018-06-22 10:03:19,603 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 10:03:19" (1/1) ... [2018-06-22 10:03:19,673 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:03:19 Unit [2018-06-22 10:03:19,674 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 10:03:19,674 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 10:03:19,674 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 10:03:19,674 INFO ]: Boogie Preprocessor initialized [2018-06-22 10:03:19,696 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:03:19" (1/1) ... [2018-06-22 10:03:19,696 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:03:19" (1/1) ... [2018-06-22 10:03:19,708 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:03:19" (1/1) ... [2018-06-22 10:03:19,708 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:03:19" (1/1) ... [2018-06-22 10:03:19,720 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:03:19" (1/1) ... [2018-06-22 10:03:19,731 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:03:19" (1/1) ... [2018-06-22 10:03:19,733 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:03:19" (1/1) ... [2018-06-22 10:03:19,741 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 10:03:19,742 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 10:03:19,742 INFO ]: Initializing RCFGBuilder... [2018-06-22 10:03:19,742 INFO ]: RCFGBuilder initialized [2018-06-22 10:03:19,746 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:03:19" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 10:03:19,756 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 10:03:19,756 INFO ]: Found specification of procedure gotoProc [2018-06-22 10:03:19,756 INFO ]: Found implementation of procedure gotoProc [2018-06-22 10:03:19,756 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 10:03:19,756 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 10:03:19,756 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 10:03:20,122 INFO ]: Using library mode [2018-06-22 10:03:20,123 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:03:20 BoogieIcfgContainer [2018-06-22 10:03:20,123 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 10:03:20,130 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 10:03:20,130 INFO ]: Initializing TraceAbstraction... [2018-06-22 10:03:20,133 INFO ]: TraceAbstraction initialized [2018-06-22 10:03:20,133 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 10:03:19" (1/3) ... [2018-06-22 10:03:20,134 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a59e046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 10:03:20, skipping insertion in model container [2018-06-22 10:03:20,134 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:03:19" (2/3) ... [2018-06-22 10:03:20,134 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a59e046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 10:03:20, skipping insertion in model container [2018-06-22 10:03:20,134 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:03:20" (3/3) ... [2018-06-22 10:03:20,136 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 10:03:20,146 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 10:03:20,155 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 10:03:20,208 INFO ]: Using default assertion order modulation [2018-06-22 10:03:20,208 INFO ]: Interprodecural is true [2018-06-22 10:03:20,208 INFO ]: Hoare is false [2018-06-22 10:03:20,208 INFO ]: Compute interpolants for FPandBP [2018-06-22 10:03:20,208 INFO ]: Backedges is TWOTRACK [2018-06-22 10:03:20,208 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 10:03:20,208 INFO ]: Difference is false [2018-06-22 10:03:20,208 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 10:03:20,209 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 10:03:20,225 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 10:03:20,238 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 10:03:20,238 INFO ]: Found error trace [2018-06-22 10:03:20,239 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:03:20,239 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:03:20,245 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 10:03:20,247 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:03:20,247 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:03:20,297 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:03:20,297 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:03:20,297 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:03:20,409 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:03:20,535 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:03:20,541 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:03:20,541 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 10:03:20,543 INFO ]: Interpolant automaton has 3 states [2018-06-22 10:03:20,558 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 10:03:20,559 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 10:03:20,562 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 10:03:20,629 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:03:20,630 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 10:03:20,633 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 10:03:20,634 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 10:03:20,634 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:03:20,646 INFO ]: With dead ends: 9 [2018-06-22 10:03:20,647 INFO ]: Without dead ends: 9 [2018-06-22 10:03:20,648 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 10:03:20,668 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 10:03:20,695 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 10:03:20,696 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 10:03:20,696 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 10:03:20,698 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 10:03:20,698 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:03:20,698 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 10:03:20,698 INFO ]: Interpolant automaton has 3 states. [2018-06-22 10:03:20,698 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 10:03:20,698 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 10:03:20,698 INFO ]: Found error trace [2018-06-22 10:03:20,698 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:03:20,699 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:03:20,699 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 10:03:20,699 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:03:20,699 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:03:20,700 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:03:20,700 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:03:20,700 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:03:20,778 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:03:20,929 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:03:20,929 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:03:20,929 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 10:03:20,939 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:03:21,128 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:03:21,140 INFO ]: Computing forward predicates... [2018-06-22 10:03:21,611 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:21,630 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 10:03:21,744 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 10:03:21,751 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 10:03:21,868 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 10:03:21,873 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 10:03:21,913 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 10:03:21,932 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 10:03:22,029 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 10:03:22,035 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 10:03:22,047 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:22,051 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 10:03:22,065 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:22,067 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 10:03:22,078 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 10:03:22,091 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 10:03:22,093 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 10:03:22,095 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 10:03:22,113 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 10:03:22,128 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 10:03:26,067 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:03:26,091 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:03:26,091 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 10:03:26,092 INFO ]: Interpolant automaton has 5 states [2018-06-22 10:03:26,092 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 10:03:26,092 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 10:03:26,092 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 10:03:26,114 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:03:26,114 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 10:03:26,114 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 10:03:26,114 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 10:03:26,114 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:03:26,115 INFO ]: With dead ends: 10 [2018-06-22 10:03:26,115 INFO ]: Without dead ends: 10 [2018-06-22 10:03:26,115 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 10:03:26,115 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 10:03:26,116 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 10:03:26,116 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 10:03:26,117 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 10:03:26,117 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 10:03:26,117 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:03:26,117 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 10:03:26,117 INFO ]: Interpolant automaton has 5 states. [2018-06-22 10:03:26,117 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 10:03:26,117 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 10:03:26,117 INFO ]: Found error trace [2018-06-22 10:03:26,117 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:03:26,118 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:03:26,118 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 10:03:26,118 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:03:26,118 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:03:26,119 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:03:26,119 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:03:26,119 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:03:26,199 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:03:26,389 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:03:26,389 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:03:26,389 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 10:03:26,403 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 10:03:26,509 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 10:03:26,509 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:03:26,517 INFO ]: Computing forward predicates... [2018-06-22 10:03:27,180 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:27,184 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 10:03:27,205 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 10:03:27,207 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:27,208 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 10:03:27,217 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 10:03:27,224 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 10:03:27,233 WARN ]: expecting exponential blowup for input size 18 [2018-06-22 10:03:27,671 WARN ]: expecting exponential blowup for input size 14 [2018-06-22 10:03:27,999 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 10:03:28,057 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 10:03:28,066 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 10:03:28,072 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:28,074 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 10:03:28,079 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:28,081 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:28,082 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 10:03:28,090 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 10:03:28,131 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:28,132 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:28,134 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:28,135 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:28,136 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 10:03:28,150 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 10:03:28,203 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:28,206 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:28,210 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:28,214 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 10:03:28,394 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 10:03:28,397 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 10:03:28,404 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 10:03:28,405 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 10:03:28,405 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 10:03:28,407 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 10:03:28,413 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:28,415 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:28,417 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 10:03:28,427 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 10:03:28,492 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 10:03:28,497 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:28,498 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 10:03:28,536 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 10:03:28,537 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 10:03:28,547 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:28,548 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 10:03:28,550 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 10:03:28,551 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:28,552 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 10:03:28,554 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:28,555 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 10:03:28,653 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 10:03:28,686 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 10:03:28,723 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 10:03:28,731 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 10:03:28,738 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 10:03:28,775 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 10:03:28,807 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 10:03:28,815 WARN ]: expecting exponential blowup for input size 18 [2018-06-22 10:03:28,904 WARN ]: Simplifying disjunction of 10240 conjuctions. This might take some time... [2018-06-22 10:03:31,241 INFO ]: Simplified to disjunction of 2592 conjuctions. [2018-06-22 10:03:31,252 WARN ]: expecting exponential blowup for input size 18 [2018-06-22 10:03:31,341 WARN ]: Simplifying disjunction of 5120 conjuctions. This might take some time... [2018-06-22 10:03:32,060 INFO ]: Simplified to disjunction of 1296 conjuctions. [2018-06-22 10:03:32,064 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:32,065 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:32,067 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:32,068 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:32,069 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 10:03:32,072 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 10:03:32,076 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:32,077 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:32,077 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:32,078 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:32,079 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 10:03:32,167 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 10:03:32,170 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 10:03:32,177 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:32,178 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 10:03:32,179 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 10:03:32,187 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 10:03:32,215 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:32,216 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 10:03:32,236 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 10:03:32,243 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 10:03:32,251 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:32,252 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:32,254 WARN ]: expecting exponential blowup for input size 18 [2018-06-22 10:03:32,397 WARN ]: Simplifying disjunction of 6144 conjuctions. This might take some time... [2018-06-22 10:03:33,771 INFO ]: Simplified to disjunction of 2592 conjuctions. [2018-06-22 10:03:33,779 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 10:03:33,880 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:33,883 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 10:03:33,911 WARN ]: Simplifying disjunction of 12835 conjuctions. This might take some time... [2018-06-22 10:03:41,205 INFO ]: Simplified to disjunction of 12835 conjuctions. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown