java -Xss4m -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_i4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 16:25:48,873 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 16:25:48,875 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 16:25:48,891 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 16:25:48,891 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 16:25:48,892 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 16:25:48,893 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 16:25:48,896 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 16:25:48,897 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 16:25:48,898 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 16:25:48,899 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 16:25:48,900 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 16:25:48,901 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 16:25:48,902 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 16:25:48,902 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 16:25:48,905 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 16:25:48,907 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 16:25:48,916 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 16:25:48,917 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 16:25:48,918 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 16:25:48,919 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 16:25:48,924 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 16:25:48,925 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 16:25:48,925 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 16:25:48,926 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 16:25:48,926 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 16:25:48,929 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 16:25:48,930 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 16:25:48,931 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 16:25:48,931 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 16:25:48,932 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 16:25:48,932 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 16:25:48,932 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 16:25:48,937 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 16:25:48,938 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 16:25:48,938 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 16:25:48,962 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 16:25:48,963 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 16:25:48,963 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 16:25:48,963 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 16:25:48,964 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 16:25:48,964 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 16:25:48,964 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 16:25:48,965 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 16:25:48,965 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 16:25:48,965 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 16:25:48,965 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 16:25:48,965 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 16:25:48,965 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:25:48,966 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 16:25:48,966 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 16:25:48,966 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 16:25:48,966 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 16:25:48,966 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 16:25:48,967 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 16:25:48,967 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 16:25:48,967 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 16:25:48,968 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 16:25:48,968 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 16:25:49,020 INFO ]: Repository-Root is: /tmp [2018-06-25 16:25:49,037 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 16:25:49,044 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 16:25:49,046 INFO ]: Initializing SmtParser... [2018-06-25 16:25:49,047 INFO ]: SmtParser initialized [2018-06-25 16:25:49,047 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i4.smt2 [2018-06-25 16:25:49,048 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 [2018-06-25 16:25:49,139 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i4.smt2 unknown [2018-06-25 16:25:49,552 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i4.smt2 [2018-06-25 16:25:49,557 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 16:25:49,563 INFO ]: Walking toolchain with 4 elements. [2018-06-25 16:25:49,563 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 16:25:49,563 INFO ]: Initializing ChcToBoogie... [2018-06-25 16:25:49,564 INFO ]: ChcToBoogie initialized [2018-06-25 16:25:49,567 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:25:49" (1/1) ... [2018-06-25 16:25:49,662 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:49 Unit [2018-06-25 16:25:49,662 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 16:25:49,663 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 16:25:49,663 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 16:25:49,663 INFO ]: Boogie Preprocessor initialized [2018-06-25 16:25:49,702 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:49" (1/1) ... [2018-06-25 16:25:49,702 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:49" (1/1) ... [2018-06-25 16:25:49,719 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:49" (1/1) ... [2018-06-25 16:25:49,720 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:49" (1/1) ... [2018-06-25 16:25:49,734 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:49" (1/1) ... [2018-06-25 16:25:49,735 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:49" (1/1) ... [2018-06-25 16:25:49,737 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:49" (1/1) ... [2018-06-25 16:25:49,741 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 16:25:49,741 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 16:25:49,741 INFO ]: Initializing RCFGBuilder... [2018-06-25 16:25:49,741 INFO ]: RCFGBuilder initialized [2018-06-25 16:25:49,742 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:49" (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 [2018-06-25 16:25:49,790 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 16:25:49,790 INFO ]: Found specification of procedure gotoProc [2018-06-25 16:25:49,790 INFO ]: Found implementation of procedure gotoProc [2018-06-25 16:25:49,790 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 16:25:49,791 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 16:25:49,791 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 16:25:50,178 INFO ]: Using library mode [2018-06-25 16:25:50,179 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:25:50 BoogieIcfgContainer [2018-06-25 16:25:50,179 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 16:25:50,181 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 16:25:50,181 INFO ]: Initializing TraceAbstraction... [2018-06-25 16:25:50,185 INFO ]: TraceAbstraction initialized [2018-06-25 16:25:50,185 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:25:49" (1/3) ... [2018-06-25 16:25:50,186 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5302215f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 04:25:50, skipping insertion in model container [2018-06-25 16:25:50,186 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:49" (2/3) ... [2018-06-25 16:25:50,186 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5302215f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 04:25:50, skipping insertion in model container [2018-06-25 16:25:50,186 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:25:50" (3/3) ... [2018-06-25 16:25:50,188 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 16:25:50,200 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 16:25:50,213 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 16:25:50,260 INFO ]: Using default assertion order modulation [2018-06-25 16:25:50,261 INFO ]: Interprodecural is true [2018-06-25 16:25:50,261 INFO ]: Hoare is false [2018-06-25 16:25:50,261 INFO ]: Compute interpolants for FPandBP [2018-06-25 16:25:50,261 INFO ]: Backedges is TWOTRACK [2018-06-25 16:25:50,261 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 16:25:50,261 INFO ]: Difference is false [2018-06-25 16:25:50,261 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 16:25:50,261 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 16:25:50,273 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 16:25:50,283 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 16:25:50,283 INFO ]: Found error trace [2018-06-25 16:25:50,284 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:25:50,284 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:25:50,290 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-25 16:25:50,292 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:25:50,293 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:25:50,327 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:25:50,327 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:25:50,327 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:25:50,427 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:25:50,587 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:25:50,589 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 16:25:50,590 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 16:25:50,592 INFO ]: Interpolant automaton has 3 states [2018-06-25 16:25:50,608 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 16:25:50,608 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 16:25:50,611 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 16:25:50,700 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:25:50,700 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 16:25:50,703 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 16:25:50,704 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 16:25:50,704 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:25:50,710 INFO ]: With dead ends: 9 [2018-06-25 16:25:50,711 INFO ]: Without dead ends: 9 [2018-06-25 16:25:50,712 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 [2018-06-25 16:25:50,725 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 16:25:50,741 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 16:25:50,742 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 16:25:50,743 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 16:25:50,744 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 16:25:50,744 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:25:50,744 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 16:25:50,744 INFO ]: Interpolant automaton has 3 states. [2018-06-25 16:25:50,744 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 16:25:50,744 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 16:25:50,744 INFO ]: Found error trace [2018-06-25 16:25:50,745 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:25:50,745 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:25:50,745 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-25 16:25:50,745 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:25:50,745 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:25:50,746 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:25:50,746 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:25:50,746 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:25:50,860 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:25:51,199 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:25:51,199 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:25:51,199 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 [2018-06-25 16:25:51,214 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:25:51,370 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:25:51,382 INFO ]: Computing forward predicates... [2018-06-25 16:25:52,512 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:25:52,528 WARN ]: expecting exponential blowup for input size 13 [2018-06-25 16:25:52,547 WARN ]: expecting exponential blowup for input size 13 [2018-06-25 16:25:52,557 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:25:52,564 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:25:52,574 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:25:52,590 WARN ]: expecting exponential blowup for input size 13 [2018-06-25 16:25:52,602 WARN ]: expecting exponential blowup for input size 13 [2018-06-25 16:25:52,622 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:25:52,632 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:25:52,645 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:25:52,649 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:25:52,663 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:25:52,676 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:25:52,688 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 16:25:52,734 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:25:52,753 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:25:52,762 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:25:52,768 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:25:52,773 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:25:52,818 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:25:52,869 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:25:52,888 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:25:52,895 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 16:25:52,932 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:25:52,946 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:25:52,958 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:25:53,020 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 16:25:53,046 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:25:53,087 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:25:53,089 WARN ]: expecting exponential blowup for input size 13 [2018-06-25 16:25:53,093 WARN ]: expecting exponential blowup for input size 13 [2018-06-25 16:25:53,103 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:25:53,111 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:25:53,148 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 16:25:53,164 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:25:53,170 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:25:53,261 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:25:53,394 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:25:53,415 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 16:25:53,418 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:25:53,424 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:25:53,491 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 16:25:53,495 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:25:53,696 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:25:53,698 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 16:25:53,711 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:25:53,716 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 16:25:53,740 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:25:53,745 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:25:53,806 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:25:54,034 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:25:54,046 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:25:54,057 WARN ]: expecting exponential blowup for input size 13 [2018-06-25 16:25:54,068 WARN ]: expecting exponential blowup for input size 13 [2018-06-25 16:25:54,076 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:25:54,083 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:25:54,096 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:25:54,114 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:25:54,120 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:25:54,130 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:25:54,135 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:25:54,138 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:25:54,141 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:26:08,174 WARN ]: Spent 883.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 12 [2018-06-25 16:26:08,177 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:26:08,199 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:26:08,199 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 16:26:08,199 INFO ]: Interpolant automaton has 5 states [2018-06-25 16:26:08,199 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 16:26:08,199 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 16:26:08,200 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 16:26:08,231 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:26:08,231 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 16:26:08,232 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 16:26:08,232 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 16:26:08,232 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:26:08,232 INFO ]: With dead ends: 10 [2018-06-25 16:26:08,232 INFO ]: Without dead ends: 10 [2018-06-25 16:26:08,233 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 16:26:08,233 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 16:26:08,234 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 16:26:08,234 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 16:26:08,234 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 16:26:08,234 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 16:26:08,235 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:26:08,235 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 16:26:08,235 INFO ]: Interpolant automaton has 5 states. [2018-06-25 16:26:08,235 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 16:26:08,235 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 16:26:08,235 INFO ]: Found error trace [2018-06-25 16:26:08,235 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:26:08,235 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:26:08,235 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-25 16:26:08,235 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:26:08,235 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:26:08,236 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:26:08,236 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:26:08,236 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:26:08,371 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:26:09,675 WARN ]: Spent 944.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2018-06-25 16:26:09,688 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:26:09,688 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:26:09,688 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 [2018-06-25 16:26:09,698 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 16:26:09,823 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 16:26:09,823 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:26:09,831 INFO ]: Computing forward predicates... [2018-06-25 16:26:10,094 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:26:10,094 WARN ]: expecting exponential blowup for input size 22 Received shutdown request... [2018-06-25 16:26:42,047 INFO ]: Timeout while computing interpolants [2018-06-25 16:26:42,248 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 16:26:42,248 WARN ]: Verification canceled [2018-06-25 16:26:42,252 WARN ]: Timeout [2018-06-25 16:26:42,252 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 04:26:42 BoogieIcfgContainer [2018-06-25 16:26:42,252 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 16:26:42,253 INFO ]: Toolchain (without parser) took 52695.58 ms. Allocated memory was 309.3 MB in the beginning and 3.3 GB in the end (delta: 3.0 GB). Free memory was 251.9 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 3.1 GB. Max. memory is 3.6 GB. [2018-06-25 16:26:42,254 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 16:26:42,254 INFO ]: ChcToBoogie took 98.98 ms. Allocated memory is still 309.3 MB. Free memory was 251.9 MB in the beginning and 248.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:26:42,255 INFO ]: Boogie Preprocessor took 78.09 ms. Allocated memory is still 309.3 MB. Free memory was 248.9 MB in the beginning and 246.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:26:42,255 INFO ]: RCFGBuilder took 437.92 ms. Allocated memory is still 309.3 MB. Free memory was 246.9 MB in the beginning and 219.9 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:26:42,256 INFO ]: TraceAbstraction took 52071.78 ms. Allocated memory was 309.3 MB in the beginning and 3.3 GB in the end (delta: 3.0 GB). Free memory was 219.9 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 3.1 GB. Max. memory is 3.6 GB. [2018-06-25 16:26:42,266 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 98.98 ms. Allocated memory is still 309.3 MB. Free memory was 251.9 MB in the beginning and 248.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 78.09 ms. Allocated memory is still 309.3 MB. Free memory was 248.9 MB in the beginning and 246.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 437.92 ms. Allocated memory is still 309.3 MB. Free memory was 246.9 MB in the beginning and 219.9 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 52071.78 ms. Allocated memory was 309.3 MB in the beginning and 3.3 GB in the end (delta: 3.0 GB). Free memory was 219.9 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 3.1 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 transforming 22 conjuction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 51.9s 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, 1.2s 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, 17.3s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 378 SizeOfPredicates, 4 NumberOfNonLiveVariables, 521 ConjunctsInSsa, 47 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_i4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_16-26-42-275.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/MESI_i4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_16-26-42-275.csv Completed graceful shutdown