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/ex2.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:22:51,636 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:22:51,638 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:22:51,652 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:22:51,652 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:22:51,653 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:22:51,654 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:22:51,656 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:22:51,658 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:22:51,659 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:22:51,659 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:22:51,660 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:22:51,661 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:22:51,665 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:22:51,667 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:22:51,668 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:22:51,669 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:22:51,681 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:22:51,681 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:22:51,682 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:22:51,683 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:22:51,684 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:22:51,685 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:22:51,685 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:22:51,686 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:22:51,686 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:22:51,687 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:22:51,688 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:22:51,688 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:22:51,689 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:22:51,689 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:22:51,690 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:22:51,690 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:22:51,691 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:22:51,691 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:22:51,692 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:22:51,704 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:22:51,704 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:22:51,705 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:22:51,705 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:22:51,706 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:22:51,706 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:22:51,706 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:22:51,706 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:22:51,707 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:22:51,707 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:22:51,707 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:22:51,707 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:22:51,707 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:22:51,708 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:22:51,708 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:22:51,708 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:22:51,708 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:22:51,709 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:22:51,710 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:22:51,763 INFO ]: Repository-Root is: /tmp [2018-06-22 05:22:51,780 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:22:51,786 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:22:51,787 INFO ]: Initializing SmtParser... [2018-06-22 05:22:51,787 INFO ]: SmtParser initialized [2018-06-22 05:22:51,788 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/ex2.c.smt2 [2018-06-22 05:22:51,789 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 05:22:51,887 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/ex2.c.smt2 unknown [2018-06-22 05:22:52,215 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/ex2.c.smt2 [2018-06-22 05:22:52,221 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:22:52,227 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:22:52,227 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:22:52,227 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:22:52,228 INFO ]: ChcToBoogie initialized [2018-06-22 05:22:52,234 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:22:52" (1/1) ... [2018-06-22 05:22:52,295 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:52 Unit [2018-06-22 05:22:52,296 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:22:52,296 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:22:52,296 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:22:52,296 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:22:52,317 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:52" (1/1) ... [2018-06-22 05:22:52,318 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:52" (1/1) ... [2018-06-22 05:22:52,326 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:52" (1/1) ... [2018-06-22 05:22:52,326 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:52" (1/1) ... [2018-06-22 05:22:52,344 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:52" (1/1) ... [2018-06-22 05:22:52,346 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:52" (1/1) ... [2018-06-22 05:22:52,348 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:52" (1/1) ... [2018-06-22 05:22:52,359 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:22:52,360 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:22:52,360 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:22:52,360 INFO ]: RCFGBuilder initialized [2018-06-22 05:22:52,361 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:52" (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 05:22:52,388 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:22:52,388 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:22:52,388 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:22:52,388 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:22:52,388 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:22:52,388 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 05:22:52,718 INFO ]: Using library mode [2018-06-22 05:22:52,718 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:22:52 BoogieIcfgContainer [2018-06-22 05:22:52,718 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:22:52,725 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:22:52,725 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:22:52,738 INFO ]: TraceAbstraction initialized [2018-06-22 05:22:52,738 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:22:52" (1/3) ... [2018-06-22 05:22:52,739 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ed244b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:22:52, skipping insertion in model container [2018-06-22 05:22:52,739 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:52" (2/3) ... [2018-06-22 05:22:52,740 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ed244b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:22:52, skipping insertion in model container [2018-06-22 05:22:52,740 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:22:52" (3/3) ... [2018-06-22 05:22:52,742 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:22:52,765 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:22:52,783 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:22:52,864 INFO ]: Using default assertion order modulation [2018-06-22 05:22:52,864 INFO ]: Interprodecural is true [2018-06-22 05:22:52,864 INFO ]: Hoare is false [2018-06-22 05:22:52,865 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:22:52,865 INFO ]: Backedges is TWOTRACK [2018-06-22 05:22:52,865 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:22:52,865 INFO ]: Difference is false [2018-06-22 05:22:52,865 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:22:52,865 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:22:52,885 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:22:52,902 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:22:52,902 INFO ]: Found error trace [2018-06-22 05:22:52,903 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:22:52,904 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:22:52,910 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 05:22:52,913 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:22:52,913 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:22:52,956 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:22:52,956 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:22:52,956 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:22:53,008 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:22:53,115 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:22:53,120 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:22:53,120 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:22:53,122 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:22:53,142 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:22:53,142 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:22:53,145 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:22:53,236 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:22:53,236 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:22:53,237 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:22:53,238 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:22:53,239 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:22:53,250 INFO ]: With dead ends: 9 [2018-06-22 05:22:53,250 INFO ]: Without dead ends: 9 [2018-06-22 05:22:53,256 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 05:22:53,277 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:22:53,293 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:22:53,294 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:22:53,295 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:22:53,296 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:22:53,296 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:22:53,296 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:22:53,297 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:22:53,297 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:22:53,297 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:22:53,297 INFO ]: Found error trace [2018-06-22 05:22:53,297 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:22:53,297 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:22:53,297 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 05:22:53,297 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:22:53,297 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:22:53,298 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:22:53,298 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:22:53,298 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:22:53,343 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:22:53,511 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:22:53,512 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:22:53,512 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 05:22:53,520 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:22:53,595 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:22:53,606 INFO ]: Computing forward predicates... [2018-06-22 05:22:54,000 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:22:54,035 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:22:54,035 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 05:22:54,036 INFO ]: Interpolant automaton has 5 states [2018-06-22 05:22:54,036 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 05:22:54,036 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:22:54,037 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 05:22:54,260 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:22:54,260 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:22:54,261 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 05:22:54,261 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 05:22:54,261 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:22:54,261 INFO ]: With dead ends: 11 [2018-06-22 05:22:54,261 INFO ]: Without dead ends: 11 [2018-06-22 05:22:54,262 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:22:54,262 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:22:54,264 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:22:54,264 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:22:54,264 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:22:54,264 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 05:22:54,264 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:22:54,264 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:22:54,264 INFO ]: Interpolant automaton has 5 states. [2018-06-22 05:22:54,264 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:22:54,265 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:22:54,265 INFO ]: Found error trace [2018-06-22 05:22:54,265 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:22:54,265 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:22:54,265 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-22 05:22:54,265 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:22:54,265 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:22:54,266 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:22:54,266 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:22:54,266 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:22:54,370 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:22:54,816 WARN ]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-06-22 05:22:54,895 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:22:54,896 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:22:54,896 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 05:22:54,903 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 05:22:55,034 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:22:55,034 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:22:55,039 INFO ]: Computing forward predicates... [2018-06-22 05:22:57,646 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:23:04,786 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:23:04,808 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:23:04,808 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 05:23:04,808 INFO ]: Interpolant automaton has 7 states [2018-06-22 05:23:04,808 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 05:23:04,808 INFO ]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-22 05:23:04,809 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-06-22 05:23:04,978 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:23:04,978 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 05:23:04,979 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 05:23:04,979 INFO ]: Start accepts. Automaton has 7 states. Word has length 10 [2018-06-22 05:23:04,979 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:23:04,979 INFO ]: With dead ends: 12 [2018-06-22 05:23:04,979 INFO ]: Without dead ends: 12 [2018-06-22 05:23:04,980 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2018-06-22 05:23:04,980 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 05:23:04,981 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 05:23:04,981 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 05:23:04,981 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 05:23:04,981 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-22 05:23:04,982 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:23:04,982 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 05:23:04,982 INFO ]: Interpolant automaton has 7 states. [2018-06-22 05:23:04,982 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 05:23:04,985 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 05:23:04,985 INFO ]: Found error trace [2018-06-22 05:23:04,985 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:23:04,985 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:23:04,986 INFO ]: Analyzing trace with hash 201204236, now seen corresponding path program 3 times [2018-06-22 05:23:04,986 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:23:04,986 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:23:04,987 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:23:04,987 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:23:04,987 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:23:05,055 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:23:05,684 WARN ]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 05:23:05,735 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:23:05,735 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:23:05,735 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 05:23:05,744 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:23:05,815 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 05:23:05,815 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:23:05,819 INFO ]: Computing forward predicates... [2018-06-22 05:23:13,064 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:23:13,095 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:23:13,110 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:23:18,589 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:23:18,632 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:23:18,632 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-06-22 05:23:18,632 INFO ]: Interpolant automaton has 8 states [2018-06-22 05:23:18,632 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 05:23:18,632 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:23:18,632 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 8 states. [2018-06-22 05:23:18,850 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:23:18,851 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 05:23:18,851 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 05:23:18,851 INFO ]: Start accepts. Automaton has 8 states. Word has length 11 [2018-06-22 05:23:18,851 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:23:18,851 INFO ]: With dead ends: 13 [2018-06-22 05:23:18,851 INFO ]: Without dead ends: 13 [2018-06-22 05:23:18,852 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2018-06-22 05:23:18,852 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 05:23:18,853 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 05:23:18,854 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 05:23:18,854 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 05:23:18,854 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-22 05:23:18,854 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:23:18,854 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 05:23:18,854 INFO ]: Interpolant automaton has 8 states. [2018-06-22 05:23:18,854 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 05:23:18,855 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 05:23:18,855 INFO ]: Found error trace [2018-06-22 05:23:18,855 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:23:18,855 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:23:18,855 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 4 times [2018-06-22 05:23:18,855 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:23:18,855 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:23:18,855 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:23:18,856 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:23:18,856 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:23:18,937 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:23:19,320 WARN ]: Spent 140.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-06-22 05:23:19,392 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:23:19,392 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:23:19,392 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 05:23:19,407 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 05:23:19,477 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 05:23:19,477 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:23:19,481 INFO ]: Computing forward predicates... [2018-06-22 05:23:39,478 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:23:39,499 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:23:39,499 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-06-22 05:23:39,499 INFO ]: Interpolant automaton has 9 states [2018-06-22 05:23:39,499 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 05:23:39,499 INFO ]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-06-22 05:23:39,500 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 9 states. [2018-06-22 05:23:39,817 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:23:39,817 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 05:23:39,817 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 05:23:39,817 INFO ]: Start accepts. Automaton has 9 states. Word has length 12 [2018-06-22 05:23:39,818 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:23:39,818 INFO ]: With dead ends: 14 [2018-06-22 05:23:39,818 INFO ]: Without dead ends: 14 [2018-06-22 05:23:39,818 INFO ]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2018-06-22 05:23:39,818 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 05:23:39,820 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 05:23:39,820 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 05:23:39,821 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 05:23:39,821 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-22 05:23:39,821 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:23:39,821 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 05:23:39,821 INFO ]: Interpolant automaton has 9 states. [2018-06-22 05:23:39,821 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 05:23:39,821 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 05:23:39,821 INFO ]: Found error trace [2018-06-22 05:23:39,821 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:23:39,821 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:23:39,821 INFO ]: Analyzing trace with hash 23503628, now seen corresponding path program 5 times [2018-06-22 05:23:39,821 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:23:39,821 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:23:39,822 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:23:39,822 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:23:39,822 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:23:39,912 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:23:40,595 WARN ]: Spent 382.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 1 [2018-06-22 05:23:40,766 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:23:40,766 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:23:40,766 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 05:23:40,774 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 05:23:40,849 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-22 05:23:40,849 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:23:40,854 INFO ]: Computing forward predicates... [2018-06-22 05:23:54,751 WARN ]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 17 Received shutdown request... [2018-06-22 05:23:58,202 INFO ]: Timeout while computing interpolants [2018-06-22 05:23:58,403 WARN ]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:23:58,403 WARN ]: Verification canceled [2018-06-22 05:23:58,407 WARN ]: Timeout [2018-06-22 05:23:58,407 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:23:58 BoogieIcfgContainer [2018-06-22 05:23:58,407 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:23:58,408 INFO ]: Toolchain (without parser) took 66186.60 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 258.2 MB in the beginning and 1.1 GB in the end (delta: -837.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:23:58,409 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:23:58,409 INFO ]: ChcToBoogie took 68.68 ms. Allocated memory is still 308.8 MB. Free memory was 258.2 MB in the beginning and 256.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:23:58,410 INFO ]: Boogie Preprocessor took 62.87 ms. Allocated memory is still 308.8 MB. Free memory was 255.2 MB in the beginning and 254.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 05:23:58,410 INFO ]: RCFGBuilder took 358.58 ms. Allocated memory is still 308.8 MB. Free memory was 254.2 MB in the beginning and 241.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 3.6 GB. [2018-06-22 05:23:58,411 INFO ]: TraceAbstraction took 65681.78 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 240.8 MB in the beginning and 1.1 GB in the end (delta: -855.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:23:58,414 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 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 68.68 ms. Allocated memory is still 308.8 MB. Free memory was 258.2 MB in the beginning and 256.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 62.87 ms. Allocated memory is still 308.8 MB. Free memory was 255.2 MB in the beginning and 254.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 358.58 ms. Allocated memory is still 308.8 MB. Free memory was 254.2 MB in the beginning and 241.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 3.6 GB. * TraceAbstraction took 65681.78 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 240.8 MB in the beginning and 1.1 GB in the end (delta: -855.1 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 14 with TraceHistMax 6, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 2511 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 65.5s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 11 SDslu, 98 SDs, 0 SdLazy, 37 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 31 SyntacticMatches, 12 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 0.5s SatisfiabilityAnalysisTime, 44.8s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 4067 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1066 ConjunctsInSsa, 138 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 0/64 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/ex2.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-23-58-434.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ex2.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-23-58-434.csv Completed graceful shutdown