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/metros_3_e3_1275_e5_846.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 09:12:18,753 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 09:12:18,754 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 09:12:18,769 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 09:12:18,770 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 09:12:18,771 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 09:12:18,772 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 09:12:18,774 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 09:12:18,776 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 09:12:18,778 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 09:12:18,779 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 09:12:18,779 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 09:12:18,780 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 09:12:18,784 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 09:12:18,785 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 09:12:18,786 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 09:12:18,799 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 09:12:18,801 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 09:12:18,802 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 09:12:18,803 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 09:12:18,804 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 09:12:18,806 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 09:12:18,807 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 09:12:18,807 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 09:12:18,808 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 09:12:18,813 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 09:12:18,814 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 09:12:18,814 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 09:12:18,815 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 09:12:18,815 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 09:12:18,821 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 09:12:18,822 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 09:12:18,822 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 09:12:18,823 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 09:12:18,824 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 09:12:18,824 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 09:12:18,844 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 09:12:18,844 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 09:12:18,845 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 09:12:18,845 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 09:12:18,846 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 09:12:18,846 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 09:12:18,846 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 09:12:18,847 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 09:12:18,847 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:12:18,847 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 09:12:18,847 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 09:12:18,847 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 09:12:18,848 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 09:12:18,848 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 09:12:18,848 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 09:12:18,848 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 09:12:18,848 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 09:12:18,851 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 09:12:18,851 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 09:12:18,903 INFO ]: Repository-Root is: /tmp [2018-06-22 09:12:18,919 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 09:12:18,923 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 09:12:18,924 INFO ]: Initializing SmtParser... [2018-06-22 09:12:18,924 INFO ]: SmtParser initialized [2018-06-22 09:12:18,925 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e3_1275_e5_846.smt2 [2018-06-22 09:12:18,926 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 09:12:19,013 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e3_1275_e5_846.smt2 unknown [2018-06-22 09:12:19,573 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e3_1275_e5_846.smt2 [2018-06-22 09:12:19,577 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 09:12:19,583 INFO ]: Walking toolchain with 4 elements. [2018-06-22 09:12:19,583 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 09:12:19,583 INFO ]: Initializing ChcToBoogie... [2018-06-22 09:12:19,583 INFO ]: ChcToBoogie initialized [2018-06-22 09:12:19,591 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:12:19" (1/1) ... [2018-06-22 09:12:19,675 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:12:19 Unit [2018-06-22 09:12:19,675 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 09:12:19,676 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 09:12:19,676 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 09:12:19,676 INFO ]: Boogie Preprocessor initialized [2018-06-22 09:12:19,695 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:12:19" (1/1) ... [2018-06-22 09:12:19,695 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:12:19" (1/1) ... [2018-06-22 09:12:19,716 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:12:19" (1/1) ... [2018-06-22 09:12:19,717 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:12:19" (1/1) ... [2018-06-22 09:12:19,729 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:12:19" (1/1) ... [2018-06-22 09:12:19,731 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:12:19" (1/1) ... [2018-06-22 09:12:19,733 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:12:19" (1/1) ... [2018-06-22 09:12:19,738 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 09:12:19,739 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 09:12:19,739 INFO ]: Initializing RCFGBuilder... [2018-06-22 09:12:19,739 INFO ]: RCFGBuilder initialized [2018-06-22 09:12:19,740 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:12:19" (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) [2018-06-22 09:12:19,755 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 09:12:19,755 INFO ]: Found specification of procedure gotoProc [2018-06-22 09:12:19,755 INFO ]: Found implementation of procedure gotoProc [2018-06-22 09:12:19,755 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 09:12:19,755 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 09:12:19,755 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:12:20,110 INFO ]: Using library mode [2018-06-22 09:12:20,110 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:12:20 BoogieIcfgContainer [2018-06-22 09:12:20,110 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 09:12:20,113 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 09:12:20,114 INFO ]: Initializing TraceAbstraction... [2018-06-22 09:12:20,117 INFO ]: TraceAbstraction initialized [2018-06-22 09:12:20,117 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:12:19" (1/3) ... [2018-06-22 09:12:20,118 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a19240a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 09:12:20, skipping insertion in model container [2018-06-22 09:12:20,118 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:12:19" (2/3) ... [2018-06-22 09:12:20,118 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a19240a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 09:12:20, skipping insertion in model container [2018-06-22 09:12:20,118 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:12:20" (3/3) ... [2018-06-22 09:12:20,121 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 09:12:20,130 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 09:12:20,144 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 09:12:20,202 INFO ]: Using default assertion order modulation [2018-06-22 09:12:20,203 INFO ]: Interprodecural is true [2018-06-22 09:12:20,203 INFO ]: Hoare is false [2018-06-22 09:12:20,203 INFO ]: Compute interpolants for FPandBP [2018-06-22 09:12:20,203 INFO ]: Backedges is TWOTRACK [2018-06-22 09:12:20,203 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 09:12:20,203 INFO ]: Difference is false [2018-06-22 09:12:20,203 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 09:12:20,203 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 09:12:20,216 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 09:12:20,231 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 09:12:20,231 INFO ]: Found error trace [2018-06-22 09:12:20,232 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:12:20,233 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:12:20,238 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 09:12:20,241 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:12:20,241 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:12:20,280 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:12:20,280 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:12:20,280 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:12:20,387 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:12:20,514 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:12:20,517 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 09:12:20,517 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 09:12:20,519 INFO ]: Interpolant automaton has 3 states [2018-06-22 09:12:20,534 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 09:12:20,535 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:12:20,538 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 09:12:20,617 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:12:20,618 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 09:12:20,618 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 09:12:20,619 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 09:12:20,619 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:12:20,626 INFO ]: With dead ends: 9 [2018-06-22 09:12:20,626 INFO ]: Without dead ends: 9 [2018-06-22 09:12:20,627 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 09:12:20,640 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 09:12:20,653 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 09:12:20,655 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 09:12:20,655 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 09:12:20,656 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 09:12:20,656 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:12:20,656 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 09:12:20,656 INFO ]: Interpolant automaton has 3 states. [2018-06-22 09:12:20,656 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 09:12:20,657 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 09:12:20,657 INFO ]: Found error trace [2018-06-22 09:12:20,657 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:12:20,657 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:12:20,657 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 09:12:20,657 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:12:20,657 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:12:20,658 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:12:20,658 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:12:20,658 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:12:20,827 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:12:21,001 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:12:21,002 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:12:21,002 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 09:12:21,009 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:12:21,160 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:12:21,171 INFO ]: Computing forward predicates... [2018-06-22 09:12:21,362 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:12:21,383 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:12:21,383 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 09:12:21,383 INFO ]: Interpolant automaton has 6 states [2018-06-22 09:12:21,383 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 09:12:21,383 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 09:12:21,384 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 09:12:21,544 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:12:21,544 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 09:12:21,545 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 09:12:21,545 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 09:12:21,545 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:12:21,545 INFO ]: With dead ends: 11 [2018-06-22 09:12:21,545 INFO ]: Without dead ends: 11 [2018-06-22 09:12:21,546 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 09:12:21,546 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 09:12:21,548 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 09:12:21,548 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 09:12:21,548 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 09:12:21,548 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 09:12:21,548 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:12:21,548 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 09:12:21,548 INFO ]: Interpolant automaton has 6 states. [2018-06-22 09:12:21,548 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 09:12:21,548 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 09:12:21,548 INFO ]: Found error trace [2018-06-22 09:12:21,549 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:12:21,550 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:12:21,550 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-22 09:12:21,550 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:12:21,550 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:12:21,551 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:12:21,551 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:12:21,551 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:12:21,771 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:12:22,467 WARN ]: Spent 385.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 24 [2018-06-22 09:12:22,604 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 25 [2018-06-22 09:12:22,630 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:12:22,630 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:12:22,630 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 09:12:22,638 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 09:12:22,862 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 09:12:22,862 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:12:22,871 INFO ]: Computing forward predicates... [2018-06-22 09:12:23,639 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:12:23,660 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:12:23,660 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 09:12:23,660 INFO ]: Interpolant automaton has 10 states [2018-06-22 09:12:23,660 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 09:12:23,660 INFO ]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-22 09:12:23,661 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 09:12:23,881 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:12:23,881 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 09:12:23,882 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 09:12:23,882 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 09:12:23,882 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:12:23,882 INFO ]: With dead ends: 13 [2018-06-22 09:12:23,882 INFO ]: Without dead ends: 13 [2018-06-22 09:12:23,883 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-06-22 09:12:23,883 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 09:12:23,884 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 09:12:23,884 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 09:12:23,885 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 09:12:23,885 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 09:12:23,885 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:12:23,885 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 09:12:23,885 INFO ]: Interpolant automaton has 10 states. [2018-06-22 09:12:23,885 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 09:12:23,885 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 09:12:23,885 INFO ]: Found error trace [2018-06-22 09:12:23,885 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:12:23,885 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:12:23,885 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 3 times [2018-06-22 09:12:23,886 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:12:23,886 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:12:23,886 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:12:23,886 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:12:23,886 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:12:24,141 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:12:25,305 WARN ]: Spent 444.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 25 [2018-06-22 09:12:26,228 WARN ]: Spent 889.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 24 [2018-06-22 09:12:26,776 WARN ]: Spent 514.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 25 [2018-06-22 09:12:27,503 WARN ]: Spent 609.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 35 [2018-06-22 09:12:27,513 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:12:27,513 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:12:27,513 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 09:12:27,528 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 09:12:27,748 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 09:12:27,748 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:12:27,759 INFO ]: Computing forward predicates... [2018-06-22 09:12:28,061 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:12:28,086 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:12:28,086 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 09:12:28,087 INFO ]: Interpolant automaton has 14 states [2018-06-22 09:12:28,087 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 09:12:28,087 INFO ]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2018-06-22 09:12:28,088 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-22 09:12:28,414 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:12:28,414 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-22 09:12:28,417 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 09:12:28,417 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-22 09:12:28,417 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:12:28,417 INFO ]: With dead ends: 15 [2018-06-22 09:12:28,417 INFO ]: Without dead ends: 15 [2018-06-22 09:12:28,418 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2018-06-22 09:12:28,418 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 09:12:28,419 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 09:12:28,420 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 09:12:28,420 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-22 09:12:28,420 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-06-22 09:12:28,420 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:12:28,420 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-22 09:12:28,420 INFO ]: Interpolant automaton has 14 states. [2018-06-22 09:12:28,420 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-22 09:12:28,420 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-22 09:12:28,420 INFO ]: Found error trace [2018-06-22 09:12:28,421 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:12:28,422 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:12:28,422 INFO ]: Analyzing trace with hash 726730004, now seen corresponding path program 4 times [2018-06-22 09:12:28,422 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:12:28,422 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:12:28,423 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:12:28,423 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:12:28,423 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:12:29,736 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:13:06,105 WARN ]: Spent 29.97 s on a formula simplification. DAG size of input: 1472 DAG size of output: 24 Received shutdown request... [2018-06-22 09:13:29,517 WARN ]: Removed 2 from assertion stack [2018-06-22 09:13:29,517 WARN ]: Verification canceled [2018-06-22 09:13:29,520 WARN ]: Timeout [2018-06-22 09:13:29,520 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:13:29 BoogieIcfgContainer [2018-06-22 09:13:29,520 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 09:13:29,521 INFO ]: Toolchain (without parser) took 69942.89 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 250.9 MB in the beginning and 326.0 MB in the end (delta: -75.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 09:13:29,521 INFO ]: SmtParser took 0.08 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. [2018-06-22 09:13:29,525 INFO ]: ChcToBoogie took 91.94 ms. Allocated memory is still 309.3 MB. Free memory was 250.9 MB in the beginning and 247.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:13:29,525 INFO ]: Boogie Preprocessor took 62.85 ms. Allocated memory is still 309.3 MB. Free memory was 247.9 MB in the beginning and 246.9 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 09:13:29,526 INFO ]: RCFGBuilder took 371.49 ms. Allocated memory is still 309.3 MB. Free memory was 245.9 MB in the beginning and 215.4 MB in the end (delta: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 3.6 GB. [2018-06-22 09:13:29,526 INFO ]: TraceAbstraction took 69406.56 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 215.4 MB in the beginning and 326.0 MB in the end (delta: -110.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 09:13:29,531 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 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 91.94 ms. Allocated memory is still 309.3 MB. Free memory was 250.9 MB in the beginning and 247.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 62.85 ms. Allocated memory is still 309.3 MB. Free memory was 247.9 MB in the beginning and 246.9 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 371.49 ms. Allocated memory is still 309.3 MB. Free memory was 245.9 MB in the beginning and 215.4 MB in the end (delta: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 3.6 GB. * TraceAbstraction took 69406.56 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 215.4 MB in the beginning and 326.0 MB in the end (delta: -110.6 MB). Peak memory consumption was 1.3 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 15 with TraceHistMax 7, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 4248. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 69.3s OverallTime, 5 OverallIterations, 7 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 110 SDs, 0 SdLazy, 74 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=4, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 3789 SizeOfPredicates, 16 NumberOfNonLiveVariables, 2895 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/44 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/metros_3_e3_1275_e5_846.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_09-13-29-539.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_3_e3_1275_e5_846.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_09-13-29-539.csv Completed graceful shutdown