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_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:25:21,635 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:25:21,637 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:25:21,659 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:25:21,659 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:25:21,662 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:25:21,664 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:25:21,666 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:25:21,668 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:25:21,669 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:25:21,669 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:25:21,670 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:25:21,670 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:25:21,672 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:25:21,672 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:25:21,673 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:25:21,684 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:25:21,686 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:25:21,687 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:25:21,688 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:25:21,689 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:25:21,692 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:25:21,692 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:25:21,692 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:25:21,697 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:25:21,698 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:25:21,699 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:25:21,700 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:25:21,705 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:25:21,705 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:25:21,706 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:25:21,706 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:25:21,706 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:25:21,707 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:25:21,708 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:25:21,708 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 14:25:21,731 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:25:21,732 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:25:21,734 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:25:21,734 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:25:21,735 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:25:21,735 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:25:21,735 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:25:21,736 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:25:21,736 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:25:21,736 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:25:21,736 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:25:21,736 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:25:21,737 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:25:21,737 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:25:21,738 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:25:21,738 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:25:21,738 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:25:21,738 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:25:21,738 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:25:21,740 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:25:21,740 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:25:21,791 INFO ]: Repository-Root is: /tmp [2018-06-22 14:25:21,806 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:25:21,814 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:25:21,816 INFO ]: Initializing SmtParser... [2018-06-22 14:25:21,816 INFO ]: SmtParser initialized [2018-06-22 14:25:21,817 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-4.smt2 [2018-06-22 14:25:21,818 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 14:25:21,910 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-4.smt2 unknown [2018-06-22 14:25:22,405 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-4.smt2 [2018-06-22 14:25:22,409 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:25:22,415 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:25:22,415 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:25:22,415 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:25:22,416 INFO ]: ChcToBoogie initialized [2018-06-22 14:25:22,419 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:25:22" (1/1) ... [2018-06-22 14:25:22,502 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:25:22 Unit [2018-06-22 14:25:22,502 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:25:22,502 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:25:22,502 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:25:22,502 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:25:22,522 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:25:22" (1/1) ... [2018-06-22 14:25:22,522 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:25:22" (1/1) ... [2018-06-22 14:25:22,532 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:25:22" (1/1) ... [2018-06-22 14:25:22,533 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:25:22" (1/1) ... [2018-06-22 14:25:22,546 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:25:22" (1/1) ... [2018-06-22 14:25:22,548 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:25:22" (1/1) ... [2018-06-22 14:25:22,552 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:25:22" (1/1) ... [2018-06-22 14:25:22,556 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:25:22,557 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:25:22,557 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:25:22,557 INFO ]: RCFGBuilder initialized [2018-06-22 14:25:22,570 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:25:22" (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 14:25:22,581 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:25:22,581 INFO ]: Found specification of procedure False [2018-06-22 14:25:22,581 INFO ]: Found implementation of procedure False [2018-06-22 14:25:22,581 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:25:22,581 INFO ]: Found specification of procedure state [2018-06-22 14:25:22,581 INFO ]: Found implementation of procedure state [2018-06-22 14:25:22,581 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:25:22,581 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:25:22,581 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 14:25:23,050 INFO ]: Using library mode [2018-06-22 14:25:23,050 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:25:23 BoogieIcfgContainer [2018-06-22 14:25:23,050 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:25:23,053 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:25:23,053 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:25:23,058 INFO ]: TraceAbstraction initialized [2018-06-22 14:25:23,059 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:25:22" (1/3) ... [2018-06-22 14:25:23,060 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c88b30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:25:23, skipping insertion in model container [2018-06-22 14:25:23,060 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:25:22" (2/3) ... [2018-06-22 14:25:23,060 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c88b30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:25:23, skipping insertion in model container [2018-06-22 14:25:23,060 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:25:23" (3/3) ... [2018-06-22 14:25:23,063 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:25:23,073 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:25:23,083 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:25:23,135 INFO ]: Using default assertion order modulation [2018-06-22 14:25:23,135 INFO ]: Interprodecural is true [2018-06-22 14:25:23,135 INFO ]: Hoare is false [2018-06-22 14:25:23,135 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:25:23,135 INFO ]: Backedges is TWOTRACK [2018-06-22 14:25:23,135 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:25:23,135 INFO ]: Difference is false [2018-06-22 14:25:23,135 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:25:23,135 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:25:23,154 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:25:23,168 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:25:23,168 INFO ]: Found error trace [2018-06-22 14:25:23,168 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:25:23,169 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:25:23,174 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 14:25:23,176 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:25:23,177 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:25:23,225 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:25:23,225 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:25:23,225 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:25:23,279 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:25:23,428 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:25:23,430 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:25:23,431 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:25:23,432 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:25:23,458 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:25:23,459 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:25:23,461 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:25:23,601 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:25:23,602 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:25:23,603 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:25:23,604 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:25:23,604 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:25:23,617 INFO ]: With dead ends: 13 [2018-06-22 14:25:23,617 INFO ]: Without dead ends: 13 [2018-06-22 14:25:23,619 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:25:23,640 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:25:23,666 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:25:23,668 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:25:23,668 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:25:23,670 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:25:23,670 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:25:23,670 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:25:23,670 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:25:23,670 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:25:23,671 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:25:23,671 INFO ]: Found error trace [2018-06-22 14:25:23,672 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:25:23,672 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:25:23,672 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 14:25:23,672 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:25:23,672 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:25:23,673 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:25:23,673 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:25:23,673 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:25:23,827 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:25:24,167 WARN ]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 14:25:24,454 WARN ]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-22 14:25:24,613 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:25:24,613 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:25:24,613 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) [2018-06-22 14:25:24,631 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:25:24,709 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:25:24,720 INFO ]: Computing forward predicates... [2018-06-22 14:25:26,131 WARN ]: Spent 772.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 23 [2018-06-22 14:25:26,265 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:25:26,292 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:25:26,292 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 14:25:26,293 INFO ]: Interpolant automaton has 8 states [2018-06-22 14:25:26,293 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 14:25:26,293 INFO ]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-06-22 14:25:26,293 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 14:25:26,647 WARN ]: Spent 126.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2018-06-22 14:25:26,664 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:25:26,664 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 14:25:26,665 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 14:25:26,665 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 14:25:26,665 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:25:26,665 INFO ]: With dead ends: 17 [2018-06-22 14:25:26,665 INFO ]: Without dead ends: 17 [2018-06-22 14:25:26,666 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-06-22 14:25:26,666 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 14:25:26,669 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 14:25:26,669 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 14:25:26,669 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 14:25:26,669 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2018-06-22 14:25:26,670 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:25:26,670 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 14:25:26,670 INFO ]: Interpolant automaton has 8 states. [2018-06-22 14:25:26,670 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 14:25:26,670 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 14:25:26,670 INFO ]: Found error trace [2018-06-22 14:25:26,670 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:25:26,671 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:25:26,671 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 2 times [2018-06-22 14:25:26,671 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:25:26,671 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:25:26,672 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:25:26,672 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:25:26,672 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:25:26,882 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:25:27,408 WARN ]: Spent 105.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 22 [2018-06-22 14:25:27,931 WARN ]: Spent 506.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2018-06-22 14:25:28,113 WARN ]: Spent 152.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-06-22 14:25:28,811 WARN ]: Spent 509.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 5 [2018-06-22 14:25:28,882 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:25:28,882 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:25:28,911 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 14:25:28,917 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:25:29,052 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:25:29,052 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:25:29,063 INFO ]: Computing forward predicates... [2018-06-22 14:25:29,640 WARN ]: Spent 149.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 23 [2018-06-22 14:25:41,067 WARN ]: Spent 9.23 s on a formula simplification. DAG size of input: 1693 DAG size of output: 231 [2018-06-22 14:25:42,918 WARN ]: Spent 689.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 92 [2018-06-22 14:25:43,473 WARN ]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-06-22 14:25:44,023 WARN ]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:25:45,351 WARN ]: Spent 951.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 13 [2018-06-22 14:25:45,376 INFO ]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:25:45,409 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:25:45,410 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-22 14:25:45,410 INFO ]: Interpolant automaton has 16 states [2018-06-22 14:25:45,410 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 14:25:45,410 INFO ]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-06-22 14:25:45,411 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-22 14:25:50,459 WARN ]: Spent 4.70 s on a formula simplification. DAG size of input: 230 DAG size of output: 230 [2018-06-22 14:25:50,738 WARN ]: Spent 220.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 33 [2018-06-22 14:25:51,090 WARN ]: Spent 314.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 49 [2018-06-22 14:25:52,656 WARN ]: Spent 1.41 s on a formula simplification. DAG size of input: 228 DAG size of output: 222 [2018-06-22 14:25:52,708 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:25:52,708 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 14:25:52,709 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 14:25:52,709 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-22 14:25:52,709 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:25:52,710 INFO ]: With dead ends: 19 [2018-06-22 14:25:52,710 INFO ]: Without dead ends: 19 [2018-06-22 14:25:52,711 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2018-06-22 14:25:52,711 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 14:25:52,714 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 14:25:52,714 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 14:25:52,714 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 14:25:52,714 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 14:25:52,714 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:25:52,715 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 14:25:52,715 INFO ]: Interpolant automaton has 16 states. [2018-06-22 14:25:52,715 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 14:25:52,715 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 14:25:52,715 INFO ]: Found error trace [2018-06-22 14:25:52,715 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:25:52,716 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:25:52,716 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 3 times [2018-06-22 14:25:52,716 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:25:52,716 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:25:52,716 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:25:52,717 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:25:52,717 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:25:52,914 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:25:53,364 WARN ]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 14:25:54,316 WARN ]: Spent 903.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 22 [2018-06-22 14:25:54,577 WARN ]: Spent 197.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 42 [2018-06-22 14:25:54,992 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:25:54,992 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:25:54,992 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 14:25:55,001 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 14:25:55,147 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-22 14:25:55,147 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:25:55,158 INFO ]: Computing forward predicates... [2018-06-22 14:25:55,857 WARN ]: Spent 184.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 23 [2018-06-22 14:25:57,684 WARN ]: Spent 555.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 69 [2018-06-22 14:25:59,817 WARN ]: Spent 760.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 70 [2018-06-22 14:26:01,106 WARN ]: Spent 356.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 56 [2018-06-22 14:26:01,259 INFO ]: Checked inductivity of 36 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:26:01,280 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:26:01,280 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2018-06-22 14:26:01,280 INFO ]: Interpolant automaton has 19 states [2018-06-22 14:26:01,280 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-22 14:26:01,280 INFO ]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-06-22 14:26:01,281 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 19 states. [2018-06-22 14:26:01,990 WARN ]: Spent 659.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 107 [2018-06-22 14:26:02,142 WARN ]: Spent 109.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 14 [2018-06-22 14:26:02,333 WARN ]: Spent 159.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 26 [2018-06-22 14:26:02,626 WARN ]: Spent 264.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 29 [2018-06-22 14:26:02,947 WARN ]: Spent 285.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 45 [2018-06-22 14:26:03,515 WARN ]: Spent 531.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 96 [2018-06-22 14:26:03,552 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:26:03,553 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-22 14:26:03,601 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 14:26:03,601 INFO ]: Start accepts. Automaton has 19 states. Word has length 25 [2018-06-22 14:26:03,601 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:26:03,602 INFO ]: With dead ends: 23 [2018-06-22 14:26:03,602 INFO ]: Without dead ends: 23 [2018-06-22 14:26:03,602 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2018-06-22 14:26:03,602 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 14:26:03,605 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 14:26:03,605 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 14:26:03,606 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 14:26:03,606 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 25 [2018-06-22 14:26:03,606 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:26:03,606 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 14:26:03,606 INFO ]: Interpolant automaton has 19 states. [2018-06-22 14:26:03,606 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 14:26:03,607 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 14:26:03,607 INFO ]: Found error trace [2018-06-22 14:26:03,607 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:26:03,607 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:26:03,607 INFO ]: Analyzing trace with hash -1661294575, now seen corresponding path program 4 times [2018-06-22 14:26:03,607 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:26:03,607 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:26:03,608 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:26:03,608 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:26:03,608 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:26:03,925 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:26:04,613 WARN ]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 14:26:04,975 WARN ]: Spent 307.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 24 [2018-06-22 14:26:05,201 WARN ]: Spent 208.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 79 [2018-06-22 14:26:05,472 WARN ]: Spent 232.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 81 [2018-06-22 14:26:06,084 WARN ]: Spent 551.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 109 [2018-06-22 14:26:06,486 WARN ]: Spent 346.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 80 [2018-06-22 14:26:06,801 WARN ]: Spent 175.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 43 [2018-06-22 14:26:07,071 WARN ]: Spent 227.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 41 [2018-06-22 14:26:07,245 WARN ]: Spent 135.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 45 [2018-06-22 14:26:07,336 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 14:26:07,336 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:26:07,336 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 14:26:07,342 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 14:26:07,603 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 14:26:07,603 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:26:07,634 INFO ]: Computing forward predicates... [2018-06-22 14:26:12,005 WARN ]: Spent 2.83 s on a formula simplification. DAG size of input: 1111 DAG size of output: 243 [2018-06-22 14:26:16,208 WARN ]: Spent 3.84 s on a formula simplification. DAG size of input: 807 DAG size of output: 203 Received shutdown request... [2018-06-22 14:26:20,512 WARN ]: Removed 10 from assertion stack [2018-06-22 14:26:20,549 INFO ]: Timeout while computing interpolants [2018-06-22 14:26:20,750 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:26:20,750 WARN ]: Verification canceled [2018-06-22 14:26:20,754 WARN ]: Timeout [2018-06-22 14:26:20,754 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:26:20 BoogieIcfgContainer [2018-06-22 14:26:20,754 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 14:26:20,755 INFO ]: Toolchain (without parser) took 58344.82 ms. Allocated memory was 309.3 MB in the beginning and 1.2 GB in the end (delta: 930.6 MB). Free memory was 239.8 MB in the beginning and 1.1 GB in the end (delta: -851.2 MB). Peak memory consumption was 940.2 MB. Max. memory is 3.6 GB. [2018-06-22 14:26:20,755 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 14:26:20,756 INFO ]: ChcToBoogie took 86.62 ms. Allocated memory is still 309.3 MB. Free memory was 239.8 MB in the beginning and 236.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:26:20,756 INFO ]: Boogie Preprocessor took 54.09 ms. Allocated memory is still 309.3 MB. Free memory was 236.8 MB in the beginning and 234.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:26:20,756 INFO ]: RCFGBuilder took 493.28 ms. Allocated memory is still 309.3 MB. Free memory was 234.8 MB in the beginning and 202.8 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:26:20,757 INFO ]: TraceAbstraction took 57700.56 ms. Allocated memory was 309.3 MB in the beginning and 1.2 GB in the end (delta: 930.6 MB). Free memory was 202.8 MB in the beginning and 1.1 GB in the end (delta: -888.2 MB). Peak memory consumption was 903.2 MB. Max. memory is 3.6 GB. [2018-06-22 14:26:20,759 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 86.62 ms. Allocated memory is still 309.3 MB. Free memory was 239.8 MB in the beginning and 236.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 54.09 ms. Allocated memory is still 309.3 MB. Free memory was 236.8 MB in the beginning and 234.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 493.28 ms. Allocated memory is still 309.3 MB. Free memory was 234.8 MB in the beginning and 202.8 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 57700.56 ms. Allocated memory was 309.3 MB in the beginning and 1.2 GB in the end (delta: 930.6 MB). Free memory was 202.8 MB in the beginning and 1.1 GB in the end (delta: -888.2 MB). Peak memory consumption was 903.2 MB. 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 34 with TraceHistMax 7, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 1053. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 57.6s OverallTime, 5 OverallIterations, 7 TraceHistogramMax, 10.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 47 SDtfs, 56 SDslu, 164 SDs, 0 SdLazy, 138 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 29.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 28.9s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 68256 SizeOfPredicates, 906 NumberOfNonLiveVariables, 1173 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 39/120 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/simple_array_inversion-4.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_14-26-20-769.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_array_inversion-4.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_14-26-20-769.csv Completed graceful shutdown