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/ctigar/seq-len.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:54:29,817 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:54:29,819 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:54:29,847 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:54:29,847 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:54:29,849 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:54:29,850 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:54:29,851 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:54:29,853 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:54:29,854 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:54:29,855 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:54:29,855 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:54:29,856 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:54:29,861 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:54:29,862 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:54:29,863 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:54:29,867 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:54:29,870 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:54:29,872 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:54:29,873 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:54:29,874 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:54:29,877 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:54:29,877 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:54:29,877 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:54:29,878 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:54:29,879 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:54:29,880 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:54:29,881 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:54:29,882 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:54:29,882 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:54:29,883 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:54:29,884 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:54:29,884 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:54:29,885 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:54:29,886 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:54:29,887 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:54:29,916 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:54:29,922 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:54:29,923 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:54:29,923 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:54:29,924 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:54:29,924 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:54:29,924 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:54:29,925 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:54:29,925 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:54:29,925 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:54:29,925 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:54:29,925 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:54:29,925 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:54:29,926 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:54:29,926 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:54:29,926 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:54:29,926 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:54:29,932 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:54:29,932 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:54:29,989 INFO ]: Repository-Root is: /tmp [2018-06-22 05:54:30,049 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:54:30,053 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:54:30,055 INFO ]: Initializing SmtParser... [2018-06-22 05:54:30,055 INFO ]: SmtParser initialized [2018-06-22 05:54:30,056 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq-len.c.smt2 [2018-06-22 05:54:30,072 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 05:54:30,218 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq-len.c.smt2 unknown [2018-06-22 05:54:30,599 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq-len.c.smt2 [2018-06-22 05:54:30,604 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:54:30,611 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:54:30,612 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:54:30,612 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:54:30,612 INFO ]: ChcToBoogie initialized [2018-06-22 05:54:30,636 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:54:30" (1/1) ... [2018-06-22 05:54:30,701 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:54:30 Unit [2018-06-22 05:54:30,702 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:54:30,702 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:54:30,702 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:54:30,702 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:54:30,728 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:54:30" (1/1) ... [2018-06-22 05:54:30,728 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:54:30" (1/1) ... [2018-06-22 05:54:30,739 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:54:30" (1/1) ... [2018-06-22 05:54:30,739 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:54:30" (1/1) ... [2018-06-22 05:54:30,757 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:54:30" (1/1) ... [2018-06-22 05:54:30,758 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:54:30" (1/1) ... [2018-06-22 05:54:30,760 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:54:30" (1/1) ... [2018-06-22 05:54:30,772 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:54:30,772 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:54:30,772 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:54:30,772 INFO ]: RCFGBuilder initialized [2018-06-22 05:54:30,773 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:54:30" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 05:54:30,797 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:54:30,797 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:54:30,797 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:54:30,798 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:54:30,798 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:54:30,798 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:54:31,114 INFO ]: Using library mode [2018-06-22 05:54:31,115 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:54:31 BoogieIcfgContainer [2018-06-22 05:54:31,115 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:54:31,116 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:54:31,116 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:54:31,129 INFO ]: TraceAbstraction initialized [2018-06-22 05:54:31,129 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:54:30" (1/3) ... [2018-06-22 05:54:31,130 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552b11fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:54:31, skipping insertion in model container [2018-06-22 05:54:31,130 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:54:30" (2/3) ... [2018-06-22 05:54:31,131 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552b11fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:54:31, skipping insertion in model container [2018-06-22 05:54:31,131 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:54:31" (3/3) ... [2018-06-22 05:54:31,133 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:54:31,196 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:54:31,226 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:54:31,272 INFO ]: Using default assertion order modulation [2018-06-22 05:54:31,273 INFO ]: Interprodecural is true [2018-06-22 05:54:31,273 INFO ]: Hoare is false [2018-06-22 05:54:31,273 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:54:31,273 INFO ]: Backedges is TWOTRACK [2018-06-22 05:54:31,273 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:54:31,273 INFO ]: Difference is false [2018-06-22 05:54:31,273 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:54:31,274 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:54:31,288 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:54:31,298 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:54:31,298 INFO ]: Found error trace [2018-06-22 05:54:31,299 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:54:31,299 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:54:31,303 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 05:54:31,305 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:54:31,305 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:54:31,340 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:54:31,340 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:54:31,340 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:54:31,377 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:54:31,454 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:54:31,456 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:54:31,456 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:54:31,458 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:54:31,470 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:54:31,471 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:54:31,473 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:54:31,537 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:54:31,538 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:54:31,539 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:54:31,541 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:54:31,541 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:54:31,551 INFO ]: With dead ends: 9 [2018-06-22 05:54:31,551 INFO ]: Without dead ends: 9 [2018-06-22 05:54:31,552 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:54:31,568 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:54:31,620 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:54:31,621 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:54:31,622 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:54:31,623 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:54:31,623 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:54:31,623 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:54:31,623 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:54:31,624 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:54:31,624 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:54:31,624 INFO ]: Found error trace [2018-06-22 05:54:31,624 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:54:31,624 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:54:31,625 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 05:54:31,625 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:54:31,625 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:54:31,631 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:54:31,631 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:54:31,631 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:54:31,708 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:54:31,839 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:54:31,840 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:54:31,840 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 05:54:31,848 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:54:31,926 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:54:31,938 INFO ]: Computing forward predicates... [2018-06-22 05:54:32,320 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:54:32,358 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:54:32,358 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 05:54:32,358 INFO ]: Interpolant automaton has 5 states [2018-06-22 05:54:32,359 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 05:54:32,359 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:54:32,359 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 05:54:32,751 WARN ]: Spent 348.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-06-22 05:54:32,910 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:54:32,910 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 05:54:32,910 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 05:54:32,910 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 05:54:32,910 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:54:32,910 INFO ]: With dead ends: 10 [2018-06-22 05:54:32,910 INFO ]: Without dead ends: 10 [2018-06-22 05:54:32,911 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-22 05:54:32,911 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 05:54:32,912 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 05:54:32,912 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 05:54:32,913 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 05:54:32,913 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 05:54:32,913 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:54:32,913 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 05:54:32,913 INFO ]: Interpolant automaton has 5 states. [2018-06-22 05:54:32,913 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 05:54:32,913 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 05:54:32,913 INFO ]: Found error trace [2018-06-22 05:54:32,913 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:54:32,913 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:54:32,914 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 05:54:32,914 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:54:32,914 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:54:32,914 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:54:32,915 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:54:32,915 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:54:32,971 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:54:33,170 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:54:33,170 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:54:33,170 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:54:33,177 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 05:54:33,266 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:54:33,266 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:54:33,272 INFO ]: Computing forward predicates... [2018-06-22 05:54:34,966 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:54:34,988 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:54:34,988 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-22 05:54:34,988 INFO ]: Interpolant automaton has 6 states [2018-06-22 05:54:34,988 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 05:54:34,988 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:54:34,989 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-06-22 05:54:35,066 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:54:35,066 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:54:35,066 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 05:54:35,066 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-22 05:54:35,066 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:54:35,067 INFO ]: With dead ends: 11 [2018-06-22 05:54:35,067 INFO ]: Without dead ends: 11 [2018-06-22 05:54:35,067 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:54:35,067 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:54:35,068 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:54:35,068 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:54:35,069 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:54:35,069 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 05:54:35,069 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:54:35,069 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:54:35,069 INFO ]: Interpolant automaton has 6 states. [2018-06-22 05:54:35,069 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:54:35,070 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:54:35,070 INFO ]: Found error trace [2018-06-22 05:54:35,070 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:54:35,070 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:54:35,070 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 3 times [2018-06-22 05:54:35,070 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:54:35,070 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:54:35,071 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:54:35,071 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:54:35,071 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:54:35,125 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:54:35,287 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:54:35,287 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:54:35,287 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:54:35,302 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:54:35,375 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 05:54:35,375 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:54:35,378 INFO ]: Computing forward predicates... [2018-06-22 05:54:37,351 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:54:37,370 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:54:37,441 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:54:43,721 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:54:43,759 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:54:43,759 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 05:54:43,759 INFO ]: Interpolant automaton has 7 states [2018-06-22 05:54:43,759 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 05:54:43,759 INFO ]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-06-22 05:54:43,759 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-06-22 05:54:44,329 WARN ]: Spent 499.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-06-22 05:54:45,341 WARN ]: Spent 910.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2018-06-22 05:54:45,394 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:54:45,394 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 05:54:45,394 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 05:54:45,394 INFO ]: Start accepts. Automaton has 7 states. Word has length 10 [2018-06-22 05:54:45,394 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:54:45,394 INFO ]: With dead ends: 12 [2018-06-22 05:54:45,394 INFO ]: Without dead ends: 12 [2018-06-22 05:54:45,395 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-06-22 05:54:45,395 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 05:54:45,397 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 05:54:45,397 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 05:54:45,397 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 05:54:45,397 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-22 05:54:45,397 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:54:45,397 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 05:54:45,397 INFO ]: Interpolant automaton has 7 states. [2018-06-22 05:54:45,397 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 05:54:45,397 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 05:54:45,397 INFO ]: Found error trace [2018-06-22 05:54:45,397 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:54:45,398 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:54:45,398 INFO ]: Analyzing trace with hash -1433955954, now seen corresponding path program 4 times [2018-06-22 05:54:45,398 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:54:45,398 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:54:45,398 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:54:45,398 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:54:45,398 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:54:45,462 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:54:45,724 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:54:45,724 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:54:45,724 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:54:45,730 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 05:54:45,782 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 05:54:45,782 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:54:45,786 INFO ]: Computing forward predicates... [2018-06-22 05:54:47,424 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:54:50,292 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:54:50,328 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:54:50,328 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-06-22 05:54:50,329 INFO ]: Interpolant automaton has 8 states [2018-06-22 05:54:50,329 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 05:54:50,329 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:54:50,329 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 8 states. [2018-06-22 05:54:50,568 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:54:50,568 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 05:54:50,568 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 05:54:50,569 INFO ]: Start accepts. Automaton has 8 states. Word has length 11 [2018-06-22 05:54:50,569 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:54:50,569 INFO ]: With dead ends: 13 [2018-06-22 05:54:50,569 INFO ]: Without dead ends: 13 [2018-06-22 05:54:50,569 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2018-06-22 05:54:50,570 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 05:54:50,571 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 05:54:50,571 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 05:54:50,571 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 05:54:50,571 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-22 05:54:50,571 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:54:50,571 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 05:54:50,571 INFO ]: Interpolant automaton has 8 states. [2018-06-22 05:54:50,572 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 05:54:50,572 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 05:54:50,572 INFO ]: Found error trace [2018-06-22 05:54:50,572 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:54:50,572 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:54:50,572 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 5 times [2018-06-22 05:54:50,572 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:54:50,572 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:54:50,573 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:54:50,573 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:54:50,573 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:54:50,658 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:54:50,882 WARN ]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-06-22 05:54:51,592 WARN ]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-06-22 05:54:51,672 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:54:51,672 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:54:51,672 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:54:51,680 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 05:54:51,785 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-22 05:54:51,785 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:54:51,790 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 05:55:38,282 INFO ]: Timeout while computing interpolants [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (7)] Forcibly destroying the process [2018-06-22 05:55:38,483 WARN ]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:55:38,483 WARN ]: Verification canceled [2018-06-22 05:55:38,636 WARN ]: Timeout [2018-06-22 05:55:38,636 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:55:38 BoogieIcfgContainer [2018-06-22 05:55:38,636 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:55:38,645 INFO ]: Toolchain (without parser) took 68040.16 ms. Allocated memory was 303.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 252.0 MB in the beginning and 468.3 MB in the end (delta: -216.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:55:38,646 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 303.6 MB. Free memory is still 268.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:55:38,646 INFO ]: ChcToBoogie took 90.22 ms. Allocated memory is still 303.6 MB. Free memory was 252.0 MB in the beginning and 250.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:55:38,647 INFO ]: Boogie Preprocessor took 69.38 ms. Allocated memory is still 303.6 MB. Free memory was 250.0 MB in the beginning and 248.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:55:38,647 INFO ]: RCFGBuilder took 342.46 ms. Allocated memory is still 303.6 MB. Free memory was 248.0 MB in the beginning and 234.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:55:38,658 INFO ]: TraceAbstraction took 67520.01 ms. Allocated memory was 303.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 234.0 MB in the beginning and 468.3 MB in the end (delta: -234.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:55:38,663 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 303.6 MB. Free memory is still 268.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 90.22 ms. Allocated memory is still 303.6 MB. Free memory was 252.0 MB in the beginning and 250.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 69.38 ms. Allocated memory is still 303.6 MB. Free memory was 250.0 MB in the beginning and 248.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 342.46 ms. Allocated memory is still 303.6 MB. Free memory was 248.0 MB in the beginning and 234.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 67520.01 ms. Allocated memory was 303.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 234.0 MB in the beginning and 468.3 MB in the end (delta: -234.3 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 13 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 22 quantified variables from 20 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 67.3s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 2.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 8 SDslu, 74 SDs, 0 SdLazy, 30 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 30 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=5, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 15.7s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 2687 SizeOfPredicates, 24 NumberOfNonLiveVariables, 800 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 0/40 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/seq-len.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-55-38-706.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/seq-len.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-55-38-706.csv Completed graceful shutdown