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/lifnatprime.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:31:43,880 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:31:43,883 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:31:43,901 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:31:43,902 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:31:43,903 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:31:43,904 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:31:43,907 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:31:43,909 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:31:43,912 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:31:43,913 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:31:43,913 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:31:43,914 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:31:43,915 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:31:43,918 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:31:43,919 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:31:43,922 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:31:43,935 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:31:43,936 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:31:43,938 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:31:43,939 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:31:43,941 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:31:43,941 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:31:43,942 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:31:43,943 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:31:43,948 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:31:43,949 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:31:43,949 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:31:43,950 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:31:43,951 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:31:43,956 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:31:43,957 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:31:43,957 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:31:43,958 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:31:43,959 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:31:43,959 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:31:43,982 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:31:43,982 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:31:43,982 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:31:43,983 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:31:43,985 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:31:43,985 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:31:43,985 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:31:43,985 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:31:43,985 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:31:43,986 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:31:43,986 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:31:43,986 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:31:43,986 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:31:43,986 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:31:43,987 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:31:43,987 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:31:43,987 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:31:43,990 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:31:43,990 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:31:44,041 INFO ]: Repository-Root is: /tmp [2018-06-22 05:31:44,056 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:31:44,062 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:31:44,063 INFO ]: Initializing SmtParser... [2018-06-22 05:31:44,063 INFO ]: SmtParser initialized [2018-06-22 05:31:44,064 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/lifnatprime.c.smt2 [2018-06-22 05:31:44,065 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 05:31:44,165 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/lifnatprime.c.smt2 unknown [2018-06-22 05:31:44,662 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/lifnatprime.c.smt2 [2018-06-22 05:31:44,667 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:31:44,678 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:31:44,678 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:31:44,678 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:31:44,679 INFO ]: ChcToBoogie initialized [2018-06-22 05:31:44,685 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:31:44" (1/1) ... [2018-06-22 05:31:44,765 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:31:44 Unit [2018-06-22 05:31:44,765 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:31:44,765 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:31:44,765 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:31:44,766 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:31:44,789 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:31:44" (1/1) ... [2018-06-22 05:31:44,789 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:31:44" (1/1) ... [2018-06-22 05:31:44,805 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:31:44" (1/1) ... [2018-06-22 05:31:44,805 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:31:44" (1/1) ... [2018-06-22 05:31:44,818 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:31:44" (1/1) ... [2018-06-22 05:31:44,820 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:31:44" (1/1) ... [2018-06-22 05:31:44,827 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:31:44" (1/1) ... [2018-06-22 05:31:44,833 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:31:44,833 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:31:44,833 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:31:44,833 INFO ]: RCFGBuilder initialized [2018-06-22 05:31:44,834 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:31:44" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:31:44,848 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:31:44,848 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:31:44,848 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:31:44,848 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:31:44,848 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:31:44,848 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 05:31:45,280 INFO ]: Using library mode [2018-06-22 05:31:45,281 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:31:45 BoogieIcfgContainer [2018-06-22 05:31:45,281 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:31:45,282 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:31:45,282 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:31:45,288 INFO ]: TraceAbstraction initialized [2018-06-22 05:31:45,288 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:31:44" (1/3) ... [2018-06-22 05:31:45,289 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a47ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:31:45, skipping insertion in model container [2018-06-22 05:31:45,289 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:31:44" (2/3) ... [2018-06-22 05:31:45,289 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a47ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:31:45, skipping insertion in model container [2018-06-22 05:31:45,289 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:31:45" (3/3) ... [2018-06-22 05:31:45,291 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:31:45,299 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:31:45,314 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:31:45,504 INFO ]: Using default assertion order modulation [2018-06-22 05:31:45,504 INFO ]: Interprodecural is true [2018-06-22 05:31:45,504 INFO ]: Hoare is false [2018-06-22 05:31:45,504 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:31:45,504 INFO ]: Backedges is TWOTRACK [2018-06-22 05:31:45,504 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:31:45,504 INFO ]: Difference is false [2018-06-22 05:31:45,504 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:31:45,504 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:31:45,613 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:31:45,624 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:31:45,624 INFO ]: Found error trace [2018-06-22 05:31:45,625 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:31:45,625 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:31:45,629 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 05:31:45,630 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:31:45,630 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:31:45,729 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:31:45,729 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:31:45,729 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:31:45,907 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:31:46,281 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:31:46,283 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:31:46,308 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:31:46,309 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:31:46,379 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:31:46,380 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:31:46,432 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:31:46,663 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:31:46,663 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:31:46,664 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:31:46,665 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:31:46,665 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:31:46,678 INFO ]: With dead ends: 9 [2018-06-22 05:31:46,678 INFO ]: Without dead ends: 9 [2018-06-22 05:31:46,696 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:31:46,760 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:31:46,791 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:31:46,792 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:31:46,793 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:31:46,794 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:31:46,794 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:31:46,794 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:31:46,794 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:31:46,794 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:31:46,795 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:31:46,795 INFO ]: Found error trace [2018-06-22 05:31:46,795 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:31:46,795 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:31:46,795 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 05:31:46,795 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:31:46,795 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:31:46,796 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:31:46,796 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:31:46,796 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:31:46,959 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:31:47,155 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:31:47,155 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:31:47,155 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 05:31:47,168 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:31:47,273 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:31:47,286 INFO ]: Computing forward predicates... [2018-06-22 05:31:47,881 WARN ]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 05:31:49,327 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:31:49,361 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:31:49,361 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 05:31:49,362 INFO ]: Interpolant automaton has 5 states [2018-06-22 05:31:49,362 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 05:31:49,362 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:31:49,362 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 05:31:49,774 WARN ]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-06-22 05:31:49,880 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:31:49,880 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 05:31:49,881 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 05:31:49,882 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 05:31:49,882 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:31:49,882 INFO ]: With dead ends: 10 [2018-06-22 05:31:49,882 INFO ]: Without dead ends: 10 [2018-06-22 05:31:49,883 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:31:49,883 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 05:31:49,884 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 05:31:49,884 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 05:31:49,884 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 05:31:49,884 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 05:31:49,884 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:31:49,884 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 05:31:49,884 INFO ]: Interpolant automaton has 5 states. [2018-06-22 05:31:49,885 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 05:31:49,885 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 05:31:49,885 INFO ]: Found error trace [2018-06-22 05:31:49,885 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:31:49,886 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:31:49,886 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 05:31:49,886 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:31:49,886 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:31:49,886 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:31:49,887 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:31:49,887 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:31:50,033 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:31:50,647 WARN ]: Spent 424.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 6 [2018-06-22 05:31:51,250 WARN ]: Spent 551.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-06-22 05:31:51,519 WARN ]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 05:31:51,520 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:31:51,560 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:31:51,560 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) [2018-06-22 05:31:51,570 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:31:51,709 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:31:51,709 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:31:51,714 INFO ]: Computing forward predicates... [2018-06-22 05:31:52,016 WARN ]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 05:31:57,183 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:31:57,205 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:31:57,205 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-22 05:31:57,205 INFO ]: Interpolant automaton has 6 states [2018-06-22 05:31:57,206 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 05:31:57,206 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:31:57,206 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-06-22 05:31:57,428 WARN ]: Spent 108.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 12 [2018-06-22 05:31:57,447 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:31:57,447 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:31:57,448 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 05:31:57,448 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-22 05:31:57,448 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:31:57,448 INFO ]: With dead ends: 11 [2018-06-22 05:31:57,448 INFO ]: Without dead ends: 11 [2018-06-22 05:31:57,449 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:31:57,449 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:31:57,449 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:31:57,449 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:31:57,450 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:31:57,450 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 05:31:57,450 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:31:57,450 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:31:57,450 INFO ]: Interpolant automaton has 6 states. [2018-06-22 05:31:57,450 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:31:57,450 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:31:57,450 INFO ]: Found error trace [2018-06-22 05:31:57,450 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:31:57,450 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:31:57,450 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-22 05:31:57,450 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:31:57,450 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:31:57,452 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:31:57,452 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:31:57,452 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:31:57,583 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:31:57,902 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 5 DAG size of output: 1 [2018-06-22 05:31:57,955 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:31:57,955 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:31:57,955 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 05:31:57,964 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:31:58,100 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 05:31:58,100 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:31:58,106 INFO ]: Computing forward predicates... [2018-06-22 05:31:58,735 WARN ]: Spent 266.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-06-22 05:32:01,680 WARN ]: Spent 104.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 7 [2018-06-22 05:32:01,799 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:32:03,746 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:32:03,767 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:32:03,767 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 05:32:03,768 INFO ]: Interpolant automaton has 8 states [2018-06-22 05:32:03,768 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 05:32:03,768 INFO ]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:32:03,768 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 8 states. [2018-06-22 05:32:03,961 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:32:03,961 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 05:32:03,961 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 05:32:03,961 INFO ]: Start accepts. Automaton has 8 states. Word has length 10 [2018-06-22 05:32:03,961 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:32:03,961 INFO ]: With dead ends: 13 [2018-06-22 05:32:03,961 INFO ]: Without dead ends: 13 [2018-06-22 05:32:03,962 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2018-06-22 05:32:03,962 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 05:32:03,963 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 05:32:03,963 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 05:32:03,965 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 05:32:03,965 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 05:32:03,965 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:32:03,965 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 05:32:03,965 INFO ]: Interpolant automaton has 8 states. [2018-06-22 05:32:03,965 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 05:32:03,965 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 05:32:03,965 INFO ]: Found error trace [2018-06-22 05:32:03,965 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:32:03,965 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:32:03,966 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 4 times [2018-06-22 05:32:03,966 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:32:03,966 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:32:03,966 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:32:03,966 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:32:03,966 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:32:04,096 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:32:04,487 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:32:04,487 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:32:04,487 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 05:32:04,493 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 05:32:04,650 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 05:32:04,650 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:32:04,658 INFO ]: Computing forward predicates... [2018-06-22 05:32:05,279 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 05:32:31,172 WARN ]: Spent 1.38 s on a formula simplification. DAG size of input: 261 DAG size of output: 10 [2018-06-22 05:32:34,599 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,610 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,616 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,618 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,653 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,656 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,659 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,664 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,685 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,701 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,704 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,715 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,716 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,719 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,742 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,745 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,757 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,778 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,782 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,795 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,819 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,823 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,849 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,856 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,862 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,867 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,872 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,875 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,877 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,909 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,954 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,960 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:34,982 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,003 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,021 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,026 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,030 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,045 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,056 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,059 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,060 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,067 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,073 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,080 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,082 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,091 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,100 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:32:35,113 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,139 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,144 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,145 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,153 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,165 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,197 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,209 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:32:35,215 WARN ]: expecting exponential blowup for input size 6 Received shutdown request... [2018-06-22 05:32:50,103 INFO ]: Timeout while computing interpolants [2018-06-22 05:32:50,304 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:32:50,304 WARN ]: Verification canceled [2018-06-22 05:32:50,341 WARN ]: Timeout [2018-06-22 05:32:50,341 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:32:50 BoogieIcfgContainer [2018-06-22 05:32:50,341 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:32:50,350 INFO ]: Toolchain (without parser) took 65682.32 ms. Allocated memory was 309.9 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 238.4 MB in the beginning and 293.6 MB in the end (delta: -55.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:32:50,351 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.9 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:32:50,351 INFO ]: ChcToBoogie took 86.79 ms. Allocated memory is still 309.9 MB. Free memory was 238.4 MB in the beginning and 234.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:32:50,351 INFO ]: Boogie Preprocessor took 67.18 ms. Allocated memory is still 309.9 MB. Free memory was 234.4 MB in the beginning and 232.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:32:50,352 INFO ]: RCFGBuilder took 447.74 ms. Allocated memory is still 309.9 MB. Free memory was 232.4 MB in the beginning and 207.9 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 3.6 GB. [2018-06-22 05:32:50,352 INFO ]: TraceAbstraction took 65058.59 ms. Allocated memory was 309.9 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 207.9 MB in the beginning and 293.6 MB in the end (delta: -85.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:32:50,358 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 309.9 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 86.79 ms. Allocated memory is still 309.9 MB. Free memory was 238.4 MB in the beginning and 234.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 67.18 ms. Allocated memory is still 309.9 MB. Free memory was 234.4 MB in the beginning and 232.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 447.74 ms. Allocated memory is still 309.9 MB. Free memory was 232.4 MB in the beginning and 207.9 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 3.6 GB. * TraceAbstraction took 65058.59 ms. Allocated memory was 309.9 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 207.9 MB in the beginning and 293.6 MB in the end (delta: -85.7 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 PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 16029 quantified variables from 15 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 64.8s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 4 SDslu, 66 SDs, 0 SdLazy, 28 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1441 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1035 ConjunctsInSsa, 85 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/20 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/lifnatprime.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-32-50-383.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/lifnatprime.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-32-50-383.csv Completed graceful shutdown