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/hopv/lia/mochi/mc91.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:50:48,546 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:50:48,548 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:50:48,564 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:50:48,565 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:50:48,566 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:50:48,567 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:50:48,569 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:50:48,571 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:50:48,572 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:50:48,573 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:50:48,574 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:50:48,574 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:50:48,575 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:50:48,579 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:50:48,579 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:50:48,581 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:50:48,590 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:50:48,592 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:50:48,593 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:50:48,593 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:50:48,598 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:50:48,598 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:50:48,599 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:50:48,599 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:50:48,600 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:50:48,603 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:50:48,604 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:50:48,605 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:50:48,605 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:50:48,605 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:50:48,611 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:50:48,611 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:50:48,612 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:50:48,613 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:50:48,613 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:50:48,634 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:50:48,634 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:50:48,635 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:50:48,635 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:50:48,636 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:50:48,636 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:50:48,636 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:50:48,636 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:50:48,637 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:50:48,639 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:50:48,640 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:50:48,640 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:50:48,640 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:50:48,640 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:50:48,640 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:50:48,641 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:50:48,641 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:50:48,642 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:50:48,643 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:50:48,691 INFO ]: Repository-Root is: /tmp [2018-06-22 01:50:48,704 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:50:48,708 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:50:48,709 INFO ]: Initializing SmtParser... [2018-06-22 01:50:48,709 INFO ]: SmtParser initialized [2018-06-22 01:50:48,710 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/mc91.smt2 [2018-06-22 01:50:48,715 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 01:50:48,807 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/mc91.smt2 unknown [2018-06-22 01:50:48,950 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/mc91.smt2 [2018-06-22 01:50:48,955 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:50:48,962 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:50:48,963 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:50:48,963 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:50:48,963 INFO ]: ChcToBoogie initialized [2018-06-22 01:50:48,966 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:50:48" (1/1) ... [2018-06-22 01:50:49,016 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:49 Unit [2018-06-22 01:50:49,016 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:50:49,016 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:50:49,016 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:50:49,016 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:50:49,037 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:49" (1/1) ... [2018-06-22 01:50:49,037 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:49" (1/1) ... [2018-06-22 01:50:49,046 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:49" (1/1) ... [2018-06-22 01:50:49,047 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:49" (1/1) ... [2018-06-22 01:50:49,050 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:49" (1/1) ... [2018-06-22 01:50:49,052 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:49" (1/1) ... [2018-06-22 01:50:49,054 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:49" (1/1) ... [2018-06-22 01:50:49,055 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:50:49,056 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:50:49,056 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:50:49,056 INFO ]: RCFGBuilder initialized [2018-06-22 01:50:49,057 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:49" (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 01:50:49,072 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:50:49,072 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:50:49,072 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:50:49,073 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:50:49,073 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:50:49,073 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 01:50:49,390 INFO ]: Using library mode [2018-06-22 01:50:49,391 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:50:49 BoogieIcfgContainer [2018-06-22 01:50:49,391 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:50:49,401 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:50:49,401 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:50:49,405 INFO ]: TraceAbstraction initialized [2018-06-22 01:50:49,405 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:50:48" (1/3) ... [2018-06-22 01:50:49,406 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748ce886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:50:49, skipping insertion in model container [2018-06-22 01:50:49,406 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:49" (2/3) ... [2018-06-22 01:50:49,406 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748ce886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:50:49, skipping insertion in model container [2018-06-22 01:50:49,406 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:50:49" (3/3) ... [2018-06-22 01:50:49,408 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:50:49,427 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:50:49,451 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:50:49,493 INFO ]: Using default assertion order modulation [2018-06-22 01:50:49,494 INFO ]: Interprodecural is true [2018-06-22 01:50:49,494 INFO ]: Hoare is false [2018-06-22 01:50:49,494 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:50:49,494 INFO ]: Backedges is TWOTRACK [2018-06-22 01:50:49,494 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:50:49,494 INFO ]: Difference is false [2018-06-22 01:50:49,494 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:50:49,494 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:50:49,506 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 01:50:49,516 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:50:49,516 INFO ]: Found error trace [2018-06-22 01:50:49,517 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:50:49,517 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:50:49,521 INFO ]: Analyzing trace with hash 81548513, now seen corresponding path program 1 times [2018-06-22 01:50:49,522 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:50:49,523 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:50:49,557 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:49,557 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:50:49,557 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:49,590 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:49,707 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:50:49,710 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:50:49,710 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:50:49,712 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:50:49,725 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:50:49,726 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:50:49,728 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 01:50:49,902 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:50:49,902 INFO ]: Finished difference Result 19 states and 23 transitions. [2018-06-22 01:50:49,903 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:50:49,904 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-22 01:50:49,905 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:50:49,920 INFO ]: With dead ends: 19 [2018-06-22 01:50:49,921 INFO ]: Without dead ends: 19 [2018-06-22 01:50:49,923 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:50:49,944 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 01:50:49,972 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 01:50:49,974 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 01:50:49,975 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2018-06-22 01:50:49,976 INFO ]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 7 [2018-06-22 01:50:49,978 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:50:49,978 INFO ]: Abstraction has 19 states and 23 transitions. [2018-06-22 01:50:49,978 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:50:49,978 INFO ]: Start isEmpty. Operand 19 states and 23 transitions. [2018-06-22 01:50:49,980 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:50:49,980 INFO ]: Found error trace [2018-06-22 01:50:49,980 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:50:49,980 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:50:49,980 INFO ]: Analyzing trace with hash -1714479126, now seen corresponding path program 1 times [2018-06-22 01:50:49,980 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:50:49,980 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:50:49,982 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:49,982 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:50:49,982 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:49,993 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:50,050 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:50:50,050 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:50:50,050 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:50:50,052 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:50:50,052 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:50:50,052 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:50:50,052 INFO ]: Start difference. First operand 19 states and 23 transitions. Second operand 3 states. [2018-06-22 01:50:50,104 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:50:50,104 INFO ]: Finished difference Result 21 states and 25 transitions. [2018-06-22 01:50:50,104 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:50:50,104 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-22 01:50:50,104 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:50:50,105 INFO ]: With dead ends: 21 [2018-06-22 01:50:50,105 INFO ]: Without dead ends: 21 [2018-06-22 01:50:50,106 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 01:50:50,106 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 01:50:50,109 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 01:50:50,109 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 01:50:50,110 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2018-06-22 01:50:50,110 INFO ]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 8 [2018-06-22 01:50:50,110 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:50:50,110 INFO ]: Abstraction has 21 states and 25 transitions. [2018-06-22 01:50:50,110 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:50:50,110 INFO ]: Start isEmpty. Operand 21 states and 25 transitions. [2018-06-22 01:50:50,111 INFO ]: Finished isEmpty. Found accepting run of length 17 [2018-06-22 01:50:50,111 INFO ]: Found error trace [2018-06-22 01:50:50,111 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:50:50,111 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:50:50,111 INFO ]: Analyzing trace with hash 895211507, now seen corresponding path program 1 times [2018-06-22 01:50:50,111 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:50:50,111 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:50:50,112 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:50,112 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:50:50,112 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:50,131 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:50,589 INFO ]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:50:50,589 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:50:50,589 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 01:50:50,609 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:50:50,643 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:50,653 INFO ]: Computing forward predicates... [2018-06-22 01:50:50,960 INFO ]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:50:50,987 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:50:50,987 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 01:50:50,988 INFO ]: Interpolant automaton has 12 states [2018-06-22 01:50:50,988 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 01:50:50,989 INFO ]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-06-22 01:50:50,989 INFO ]: Start difference. First operand 21 states and 25 transitions. Second operand 12 states. [2018-06-22 01:50:51,313 WARN ]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-06-22 01:50:51,676 WARN ]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-22 01:50:51,905 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:50:51,905 INFO ]: Finished difference Result 40 states and 56 transitions. [2018-06-22 01:50:51,906 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 01:50:51,906 INFO ]: Start accepts. Automaton has 12 states. Word has length 16 [2018-06-22 01:50:51,906 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:50:51,908 INFO ]: With dead ends: 40 [2018-06-22 01:50:51,908 INFO ]: Without dead ends: 40 [2018-06-22 01:50:51,909 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-06-22 01:50:51,909 INFO ]: Start minimizeSevpa. Operand 40 states. [2018-06-22 01:50:51,917 INFO ]: Finished minimizeSevpa. Reduced states from 40 to 28. [2018-06-22 01:50:51,917 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-22 01:50:51,918 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2018-06-22 01:50:51,918 INFO ]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 16 [2018-06-22 01:50:51,918 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:50:51,919 INFO ]: Abstraction has 28 states and 38 transitions. [2018-06-22 01:50:51,919 INFO ]: Interpolant automaton has 12 states. [2018-06-22 01:50:51,919 INFO ]: Start isEmpty. Operand 28 states and 38 transitions. [2018-06-22 01:50:51,920 INFO ]: Finished isEmpty. Found accepting run of length 25 [2018-06-22 01:50:51,920 INFO ]: Found error trace [2018-06-22 01:50:51,920 INFO ]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-06-22 01:50:51,920 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:50:51,920 INFO ]: Analyzing trace with hash -873482372, now seen corresponding path program 2 times [2018-06-22 01:50:51,920 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:50:51,920 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:50:51,921 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:51,921 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:50:51,921 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:51,949 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:52,227 INFO ]: Checked inductivity of 24 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 01:50:52,227 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:50:52,227 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 01:50:52,239 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 01:50:52,262 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 01:50:52,262 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:52,265 INFO ]: Computing forward predicates... [2018-06-22 01:50:52,400 INFO ]: Checked inductivity of 24 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 01:50:52,428 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:50:52,428 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2018-06-22 01:50:52,429 INFO ]: Interpolant automaton has 15 states [2018-06-22 01:50:52,429 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 01:50:52,429 INFO ]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2018-06-22 01:50:52,429 INFO ]: Start difference. First operand 28 states and 38 transitions. Second operand 15 states. [2018-06-22 01:50:52,914 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:50:52,914 INFO ]: Finished difference Result 50 states and 82 transitions. [2018-06-22 01:50:52,915 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 01:50:52,915 INFO ]: Start accepts. Automaton has 15 states. Word has length 24 [2018-06-22 01:50:52,915 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:50:52,918 INFO ]: With dead ends: 50 [2018-06-22 01:50:52,918 INFO ]: Without dead ends: 50 [2018-06-22 01:50:52,919 INFO ]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2018-06-22 01:50:52,919 INFO ]: Start minimizeSevpa. Operand 50 states. [2018-06-22 01:50:52,931 INFO ]: Finished minimizeSevpa. Reduced states from 50 to 41. [2018-06-22 01:50:52,931 INFO ]: Start removeUnreachable. Operand 41 states. [2018-06-22 01:50:52,933 INFO ]: Finished removeUnreachable. Reduced from 41 states to 41 states and 68 transitions. [2018-06-22 01:50:52,933 INFO ]: Start accepts. Automaton has 41 states and 68 transitions. Word has length 24 [2018-06-22 01:50:52,934 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:50:52,934 INFO ]: Abstraction has 41 states and 68 transitions. [2018-06-22 01:50:52,934 INFO ]: Interpolant automaton has 15 states. [2018-06-22 01:50:52,934 INFO ]: Start isEmpty. Operand 41 states and 68 transitions. [2018-06-22 01:50:52,937 INFO ]: Finished isEmpty. Found accepting run of length 33 [2018-06-22 01:50:52,937 INFO ]: Found error trace [2018-06-22 01:50:52,937 INFO ]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2018-06-22 01:50:52,937 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:50:52,937 INFO ]: Analyzing trace with hash 349437445, now seen corresponding path program 3 times [2018-06-22 01:50:52,937 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:50:52,937 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:50:52,938 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:52,938 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:50:52,938 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:52,955 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:53,072 INFO ]: Checked inductivity of 51 backedges. 21 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-06-22 01:50:53,072 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:50:53,072 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 01:50:53,080 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 01:50:53,104 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 01:50:53,104 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:53,107 INFO ]: Computing forward predicates... [2018-06-22 01:50:53,286 INFO ]: Checked inductivity of 51 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-22 01:50:53,305 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:50:53,305 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 17 [2018-06-22 01:50:53,305 INFO ]: Interpolant automaton has 17 states [2018-06-22 01:50:53,305 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 01:50:53,306 INFO ]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2018-06-22 01:50:53,306 INFO ]: Start difference. First operand 41 states and 68 transitions. Second operand 17 states. [2018-06-22 01:50:55,937 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:50:55,937 INFO ]: Finished difference Result 152 states and 394 transitions. [2018-06-22 01:50:55,940 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-06-22 01:50:55,940 INFO ]: Start accepts. Automaton has 17 states. Word has length 32 [2018-06-22 01:50:55,940 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:50:55,950 INFO ]: With dead ends: 152 [2018-06-22 01:50:55,950 INFO ]: Without dead ends: 144 [2018-06-22 01:50:55,952 INFO ]: 0 DeclaredPredicates, 101 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1196 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=615, Invalid=3545, Unknown=0, NotChecked=0, Total=4160 [2018-06-22 01:50:55,952 INFO ]: Start minimizeSevpa. Operand 144 states. [2018-06-22 01:50:56,015 INFO ]: Finished minimizeSevpa. Reduced states from 144 to 74. [2018-06-22 01:50:56,015 INFO ]: Start removeUnreachable. Operand 74 states. [2018-06-22 01:50:56,019 INFO ]: Finished removeUnreachable. Reduced from 74 states to 74 states and 135 transitions. [2018-06-22 01:50:56,019 INFO ]: Start accepts. Automaton has 74 states and 135 transitions. Word has length 32 [2018-06-22 01:50:56,019 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:50:56,019 INFO ]: Abstraction has 74 states and 135 transitions. [2018-06-22 01:50:56,019 INFO ]: Interpolant automaton has 17 states. [2018-06-22 01:50:56,019 INFO ]: Start isEmpty. Operand 74 states and 135 transitions. [2018-06-22 01:50:56,022 INFO ]: Finished isEmpty. Found accepting run of length 33 [2018-06-22 01:50:56,022 INFO ]: Found error trace [2018-06-22 01:50:56,022 INFO ]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2018-06-22 01:50:56,022 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:50:56,022 INFO ]: Analyzing trace with hash -1123730043, now seen corresponding path program 4 times [2018-06-22 01:50:56,022 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:50:56,022 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:50:56,023 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:56,023 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:50:56,023 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:56,042 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:56,207 INFO ]: Checked inductivity of 51 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-06-22 01:50:56,208 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:50:56,208 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 01:50:56,215 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 01:50:56,237 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 01:50:56,237 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:56,239 INFO ]: Computing forward predicates... [2018-06-22 01:50:56,363 INFO ]: Checked inductivity of 51 backedges. 24 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-06-22 01:50:56,386 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:50:56,386 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2018-06-22 01:50:56,387 INFO ]: Interpolant automaton has 20 states [2018-06-22 01:50:56,387 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 01:50:56,387 INFO ]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2018-06-22 01:50:56,387 INFO ]: Start difference. First operand 74 states and 135 transitions. Second operand 20 states. [2018-06-22 01:50:57,033 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:50:57,033 INFO ]: Finished difference Result 51 states and 69 transitions. [2018-06-22 01:50:57,034 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-22 01:50:57,034 INFO ]: Start accepts. Automaton has 20 states. Word has length 32 [2018-06-22 01:50:57,034 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:50:57,034 INFO ]: With dead ends: 51 [2018-06-22 01:50:57,034 INFO ]: Without dead ends: 0 [2018-06-22 01:50:57,035 INFO ]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=208, Invalid=982, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 01:50:57,035 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:50:57,035 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:50:57,035 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:50:57,035 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:50:57,035 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-06-22 01:50:57,035 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:50:57,035 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:50:57,035 INFO ]: Interpolant automaton has 20 states. [2018-06-22 01:50:57,035 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:50:57,035 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:50:57,041 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:50:57 BoogieIcfgContainer [2018-06-22 01:50:57,041 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:50:57,042 INFO ]: Toolchain (without parser) took 8086.63 ms. Allocated memory was 306.7 MB in the beginning and 378.5 MB in the end (delta: 71.8 MB). Free memory was 263.1 MB in the beginning and 240.6 MB in the end (delta: 22.5 MB). Peak memory consumption was 94.3 MB. Max. memory is 3.6 GB. [2018-06-22 01:50:57,043 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:50:57,044 INFO ]: ChcToBoogie took 53.25 ms. Allocated memory is still 306.7 MB. Free memory was 263.1 MB in the beginning and 261.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:50:57,044 INFO ]: Boogie Preprocessor took 38.83 ms. Allocated memory is still 306.7 MB. Free memory was 261.1 MB in the beginning and 259.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:50:57,045 INFO ]: RCFGBuilder took 335.30 ms. Allocated memory is still 306.7 MB. Free memory was 259.1 MB in the beginning and 253.1 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:50:57,045 INFO ]: TraceAbstraction took 7640.10 ms. Allocated memory was 306.7 MB in the beginning and 378.5 MB in the end (delta: 71.8 MB). Free memory was 253.1 MB in the beginning and 240.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 84.3 MB. Max. memory is 3.6 GB. [2018-06-22 01:50:57,049 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 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 53.25 ms. Allocated memory is still 306.7 MB. Free memory was 263.1 MB in the beginning and 261.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.83 ms. Allocated memory is still 306.7 MB. Free memory was 261.1 MB in the beginning and 259.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 335.30 ms. Allocated memory is still 306.7 MB. Free memory was 259.1 MB in the beginning and 253.1 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 7640.10 ms. Allocated memory was 306.7 MB in the beginning and 378.5 MB in the end (delta: 71.8 MB). Free memory was 253.1 MB in the beginning and 240.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 84.3 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. SAFE Result, 7.5s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 4.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 75 SDtfs, 115 SDslu, 309 SDs, 0 SdLazy, 1558 SolverSat, 204 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 98 SyntacticMatches, 5 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1456 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 91 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 223 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 213 ConstructedInterpolants, 0 QuantifiedInterpolants, 16648 SizeOfPredicates, 42 NumberOfNonLiveVariables, 390 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 196/266 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-50-57-060.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-50-57-060.csv Received shutdown request...