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/MESI_i3_e1_447_e3_1180.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 08:50:18,560 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 08:50:18,562 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 08:50:18,573 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 08:50:18,573 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 08:50:18,574 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 08:50:18,575 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 08:50:18,577 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 08:50:18,579 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 08:50:18,579 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 08:50:18,580 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 08:50:18,581 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 08:50:18,582 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 08:50:18,583 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 08:50:18,583 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 08:50:18,584 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 08:50:18,586 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 08:50:18,588 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 08:50:18,590 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 08:50:18,591 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 08:50:18,592 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 08:50:18,594 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 08:50:18,594 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 08:50:18,595 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 08:50:18,595 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 08:50:18,596 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 08:50:18,597 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 08:50:18,598 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 08:50:18,599 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 08:50:18,599 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 08:50:18,600 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 08:50:18,601 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 08:50:18,601 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 08:50:18,602 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 08:50:18,602 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 08:50:18,602 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 08:50:18,624 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 08:50:18,624 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 08:50:18,624 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 08:50:18,625 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 08:50:18,632 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 08:50:18,632 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 08:50:18,633 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 08:50:18,633 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 08:50:18,633 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 08:50:18,633 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 08:50:18,633 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 08:50:18,634 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 08:50:18,634 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 08:50:18,634 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 08:50:18,634 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 08:50:18,634 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 08:50:18,634 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 08:50:18,636 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 08:50:18,636 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 08:50:18,676 INFO ]: Repository-Root is: /tmp [2018-06-22 08:50:18,691 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 08:50:18,696 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 08:50:18,698 INFO ]: Initializing SmtParser... [2018-06-22 08:50:18,698 INFO ]: SmtParser initialized [2018-06-22 08:50:18,699 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i3_e1_447_e3_1180.smt2 [2018-06-22 08:50:18,700 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 08:50:18,793 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i3_e1_447_e3_1180.smt2 unknown [2018-06-22 08:50:19,192 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i3_e1_447_e3_1180.smt2 [2018-06-22 08:50:19,196 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 08:50:19,202 INFO ]: Walking toolchain with 4 elements. [2018-06-22 08:50:19,202 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 08:50:19,202 INFO ]: Initializing ChcToBoogie... [2018-06-22 08:50:19,203 INFO ]: ChcToBoogie initialized [2018-06-22 08:50:19,206 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:50:19" (1/1) ... [2018-06-22 08:50:19,292 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:50:19 Unit [2018-06-22 08:50:19,292 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 08:50:19,292 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 08:50:19,292 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 08:50:19,292 INFO ]: Boogie Preprocessor initialized [2018-06-22 08:50:19,313 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:50:19" (1/1) ... [2018-06-22 08:50:19,313 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:50:19" (1/1) ... [2018-06-22 08:50:19,323 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:50:19" (1/1) ... [2018-06-22 08:50:19,323 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:50:19" (1/1) ... [2018-06-22 08:50:19,342 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:50:19" (1/1) ... [2018-06-22 08:50:19,343 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:50:19" (1/1) ... [2018-06-22 08:50:19,345 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:50:19" (1/1) ... [2018-06-22 08:50:19,350 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 08:50:19,351 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 08:50:19,352 INFO ]: Initializing RCFGBuilder... [2018-06-22 08:50:19,352 INFO ]: RCFGBuilder initialized [2018-06-22 08:50:19,353 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:50:19" (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 08:50:19,365 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 08:50:19,365 INFO ]: Found specification of procedure gotoProc [2018-06-22 08:50:19,365 INFO ]: Found implementation of procedure gotoProc [2018-06-22 08:50:19,365 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 08:50:19,365 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 08:50:19,365 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 08:50:19,760 INFO ]: Using library mode [2018-06-22 08:50:19,761 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:50:19 BoogieIcfgContainer [2018-06-22 08:50:19,761 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 08:50:19,762 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 08:50:19,762 INFO ]: Initializing TraceAbstraction... [2018-06-22 08:50:19,765 INFO ]: TraceAbstraction initialized [2018-06-22 08:50:19,766 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:50:19" (1/3) ... [2018-06-22 08:50:19,766 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59036568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:50:19, skipping insertion in model container [2018-06-22 08:50:19,767 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:50:19" (2/3) ... [2018-06-22 08:50:19,767 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59036568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:50:19, skipping insertion in model container [2018-06-22 08:50:19,767 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:50:19" (3/3) ... [2018-06-22 08:50:19,769 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 08:50:19,778 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 08:50:19,789 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 08:50:19,829 INFO ]: Using default assertion order modulation [2018-06-22 08:50:19,829 INFO ]: Interprodecural is true [2018-06-22 08:50:19,829 INFO ]: Hoare is false [2018-06-22 08:50:19,829 INFO ]: Compute interpolants for FPandBP [2018-06-22 08:50:19,829 INFO ]: Backedges is TWOTRACK [2018-06-22 08:50:19,829 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 08:50:19,829 INFO ]: Difference is false [2018-06-22 08:50:19,829 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 08:50:19,829 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 08:50:19,842 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 08:50:19,856 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 08:50:19,856 INFO ]: Found error trace [2018-06-22 08:50:19,857 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:50:19,857 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:50:19,862 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 08:50:19,864 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:50:19,864 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:50:19,901 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:50:19,901 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:50:19,901 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:50:20,015 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:50:20,143 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:50:20,145 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 08:50:20,145 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 08:50:20,146 INFO ]: Interpolant automaton has 3 states [2018-06-22 08:50:20,157 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 08:50:20,157 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 08:50:20,159 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 08:50:20,234 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:50:20,234 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 08:50:20,235 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 08:50:20,236 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 08:50:20,236 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:50:20,242 INFO ]: With dead ends: 9 [2018-06-22 08:50:20,242 INFO ]: Without dead ends: 9 [2018-06-22 08:50:20,244 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 08:50:20,260 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 08:50:20,285 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 08:50:20,286 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 08:50:20,286 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 08:50:20,288 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 08:50:20,288 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:50:20,288 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 08:50:20,288 INFO ]: Interpolant automaton has 3 states. [2018-06-22 08:50:20,288 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 08:50:20,289 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 08:50:20,289 INFO ]: Found error trace [2018-06-22 08:50:20,289 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:50:20,289 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:50:20,289 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 08:50:20,289 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:50:20,289 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:50:20,290 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:50:20,290 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:50:20,290 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:50:20,389 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:50:20,759 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:50:20,759 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:50:20,759 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 08:50:20,775 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:50:20,928 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:50:20,940 INFO ]: Computing forward predicates... [2018-06-22 08:50:21,658 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:50:21,675 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:50:21,686 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:50:21,691 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:50:21,708 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:50:21,716 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:50:21,791 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:50:21,795 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:50:21,798 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:50:21,817 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:50:21,825 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:50:21,828 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:50:21,831 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:50:21,845 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:50:21,902 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:50:21,913 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:50:21,923 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:50:21,977 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:50:21,982 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:50:22,065 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:50:22,068 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:50:22,167 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:50:32,835 WARN ]: Spent 492.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 14 [2018-06-22 08:50:32,839 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:50:32,861 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 08:50:32,862 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 08:50:32,862 INFO ]: Interpolant automaton has 5 states [2018-06-22 08:50:32,862 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 08:50:32,862 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 08:50:32,862 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 08:50:32,888 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:50:32,888 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 08:50:32,888 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 08:50:32,888 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 08:50:32,889 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:50:32,889 INFO ]: With dead ends: 10 [2018-06-22 08:50:32,889 INFO ]: Without dead ends: 10 [2018-06-22 08:50:32,889 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 08:50:32,889 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 08:50:32,890 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 08:50:32,890 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 08:50:32,891 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 08:50:32,891 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 08:50:32,891 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:50:32,891 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 08:50:32,891 INFO ]: Interpolant automaton has 5 states. [2018-06-22 08:50:32,891 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 08:50:32,891 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 08:50:32,891 INFO ]: Found error trace [2018-06-22 08:50:32,891 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:50:32,892 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:50:32,892 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 08:50:32,892 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:50:32,892 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:50:32,893 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:50:32,893 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:50:32,893 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:50:33,004 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:50:33,341 WARN ]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-06-22 08:50:33,355 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:50:33,355 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:50:33,355 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 08:50:33,361 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 08:50:33,502 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 08:50:33,502 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:50:33,521 INFO ]: Computing forward predicates... [2018-06-22 08:50:34,224 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:50:34,224 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:50:38,492 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:50:38,492 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 08:50:38,873 WARN ]: Simplifying disjunction of 34560 conjuctions. This might take some time... Received shutdown request... [2018-06-22 08:51:30,897 INFO ]: Timeout while computing interpolants [2018-06-22 08:51:31,098 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 08:51:31,098 WARN ]: Verification canceled [2018-06-22 08:51:31,102 WARN ]: Timeout [2018-06-22 08:51:31,103 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:51:31 BoogieIcfgContainer [2018-06-22 08:51:31,103 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 08:51:31,104 INFO ]: Toolchain (without parser) took 71906.96 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 250.7 MB in the beginning and 1.2 GB in the end (delta: -988.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 08:51:31,105 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 08:51:31,105 INFO ]: ChcToBoogie took 89.56 ms. Allocated memory is still 308.3 MB. Free memory was 250.7 MB in the beginning and 247.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 08:51:31,105 INFO ]: Boogie Preprocessor took 57.72 ms. Allocated memory is still 308.3 MB. Free memory was 247.7 MB in the beginning and 245.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-22 08:51:31,106 INFO ]: RCFGBuilder took 410.05 ms. Allocated memory is still 308.3 MB. Free memory was 245.6 MB in the beginning and 218.5 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 3.6 GB. [2018-06-22 08:51:31,106 INFO ]: TraceAbstraction took 71340.65 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 218.5 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 08:51:31,111 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 89.56 ms. Allocated memory is still 308.3 MB. Free memory was 250.7 MB in the beginning and 247.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 57.72 ms. Allocated memory is still 308.3 MB. Free memory was 247.7 MB in the beginning and 245.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 410.05 ms. Allocated memory is still 308.3 MB. Free memory was 245.6 MB in the beginning and 218.5 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 71340.65 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 218.5 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.2 GB. 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 analyzing trace of length 10 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 34560 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 71.2s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 20 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 12.4s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 406 SizeOfPredicates, 4 NumberOfNonLiveVariables, 521 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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/MESI_i3_e1_447_e3_1180.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_08-51-31-133.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/MESI_i3_e1_447_e3_1180.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_08-51-31-133.csv Completed graceful shutdown