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_98.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:50:16,998 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:50:16,999 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:50:17,015 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:50:17,016 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:50:17,017 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:50:17,018 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:50:17,019 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:50:17,020 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:50:17,021 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:50:17,021 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:50:17,022 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:50:17,023 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:50:17,024 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:50:17,025 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:50:17,026 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:50:17,028 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:50:17,039 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:50:17,040 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:50:17,042 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:50:17,043 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:50:17,045 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:50:17,046 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:50:17,046 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:50:17,048 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:50:17,049 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:50:17,049 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:50:17,050 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:50:17,056 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:50:17,056 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:50:17,057 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:50:17,058 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:50:17,058 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:50:17,061 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:50:17,061 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:50:17,062 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:50:17,083 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:50:17,083 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:50:17,084 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:50:17,084 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:50:17,085 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:50:17,085 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:50:17,085 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:50:17,086 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:50:17,086 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:50:17,086 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:50:17,086 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:50:17,086 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:50:17,086 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:50:17,087 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:50:17,087 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:50:17,087 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:50:17,087 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:50:17,089 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:50:17,089 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:50:17,137 INFO ]: Repository-Root is: /tmp [2018-06-22 01:50:17,151 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:50:17,156 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:50:17,158 INFO ]: Initializing SmtParser... [2018-06-22 01:50:17,158 INFO ]: SmtParser initialized [2018-06-22 01:50:17,159 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/mc91_98.smt2 [2018-06-22 01:50:17,160 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 01:50:17,249 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/mc91_98.smt2 unknown [2018-06-22 01:50:17,425 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/mc91_98.smt2 [2018-06-22 01:50:17,431 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:50:17,440 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:50:17,440 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:50:17,440 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:50:17,440 INFO ]: ChcToBoogie initialized [2018-06-22 01:50:17,447 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:50:17" (1/1) ... [2018-06-22 01:50:17,506 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:17 Unit [2018-06-22 01:50:17,507 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:50:17,507 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:50:17,507 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:50:17,507 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:50:17,530 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:17" (1/1) ... [2018-06-22 01:50:17,530 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:17" (1/1) ... [2018-06-22 01:50:17,535 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:17" (1/1) ... [2018-06-22 01:50:17,536 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:17" (1/1) ... [2018-06-22 01:50:17,538 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:17" (1/1) ... [2018-06-22 01:50:17,541 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:17" (1/1) ... [2018-06-22 01:50:17,542 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:17" (1/1) ... [2018-06-22 01:50:17,543 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:50:17,547 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:50:17,547 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:50:17,547 INFO ]: RCFGBuilder initialized [2018-06-22 01:50:17,548 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:17" (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 01:50:17,561 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:50:17,561 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:50:17,561 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:50:17,561 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:50:17,561 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:50:17,561 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 01:50:17,861 INFO ]: Using library mode [2018-06-22 01:50:17,861 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:50:17 BoogieIcfgContainer [2018-06-22 01:50:17,861 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:50:17,865 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:50:17,865 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:50:17,879 INFO ]: TraceAbstraction initialized [2018-06-22 01:50:17,879 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:50:17" (1/3) ... [2018-06-22 01:50:17,880 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a55e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:50:17, skipping insertion in model container [2018-06-22 01:50:17,880 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:50:17" (2/3) ... [2018-06-22 01:50:17,880 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a55e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:50:17, skipping insertion in model container [2018-06-22 01:50:17,880 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:50:17" (3/3) ... [2018-06-22 01:50:17,882 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:50:17,901 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:50:17,911 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:50:17,957 INFO ]: Using default assertion order modulation [2018-06-22 01:50:17,957 INFO ]: Interprodecural is true [2018-06-22 01:50:17,957 INFO ]: Hoare is false [2018-06-22 01:50:17,957 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:50:17,957 INFO ]: Backedges is TWOTRACK [2018-06-22 01:50:17,957 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:50:17,957 INFO ]: Difference is false [2018-06-22 01:50:17,957 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:50:17,958 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:50:17,971 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 01:50:17,982 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:50:17,983 INFO ]: Found error trace [2018-06-22 01:50:17,984 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:50:17,984 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:50:17,990 INFO ]: Analyzing trace with hash 81548513, now seen corresponding path program 1 times [2018-06-22 01:50:17,993 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:50:17,993 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:50:18,029 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:18,029 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:50:18,029 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:18,062 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:18,152 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:50:18,155 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:50:18,155 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:50:18,157 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:50:18,174 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:50:18,175 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:50:18,177 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 01:50:18,348 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:50:18,348 INFO ]: Finished difference Result 19 states and 23 transitions. [2018-06-22 01:50:18,349 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:50:18,351 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-22 01:50:18,351 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:50:18,365 INFO ]: With dead ends: 19 [2018-06-22 01:50:18,365 INFO ]: Without dead ends: 19 [2018-06-22 01:50:18,367 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 01:50:18,391 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 01:50:18,420 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 01:50:18,421 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 01:50:18,422 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2018-06-22 01:50:18,423 INFO ]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 7 [2018-06-22 01:50:18,424 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:50:18,424 INFO ]: Abstraction has 19 states and 23 transitions. [2018-06-22 01:50:18,424 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:50:18,424 INFO ]: Start isEmpty. Operand 19 states and 23 transitions. [2018-06-22 01:50:18,425 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:50:18,425 INFO ]: Found error trace [2018-06-22 01:50:18,426 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:50:18,426 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:50:18,426 INFO ]: Analyzing trace with hash -1714479126, now seen corresponding path program 1 times [2018-06-22 01:50:18,426 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:50:18,426 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:50:18,427 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:18,427 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:50:18,427 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:18,434 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:18,456 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:50:18,456 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:50:18,456 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:50:18,457 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:50:18,457 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:50:18,458 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:50:18,458 INFO ]: Start difference. First operand 19 states and 23 transitions. Second operand 3 states. [2018-06-22 01:50:18,475 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:50:18,475 INFO ]: Finished difference Result 25 states and 31 transitions. [2018-06-22 01:50:18,475 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:50:18,475 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-22 01:50:18,476 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:50:18,477 INFO ]: With dead ends: 25 [2018-06-22 01:50:18,477 INFO ]: Without dead ends: 25 [2018-06-22 01:50:18,477 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 01:50:18,477 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 01:50:18,482 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 21. [2018-06-22 01:50:18,482 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 01:50:18,483 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2018-06-22 01:50:18,483 INFO ]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 8 [2018-06-22 01:50:18,483 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:50:18,483 INFO ]: Abstraction has 21 states and 25 transitions. [2018-06-22 01:50:18,483 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:50:18,483 INFO ]: Start isEmpty. Operand 21 states and 25 transitions. [2018-06-22 01:50:18,484 INFO ]: Finished isEmpty. Found accepting run of length 17 [2018-06-22 01:50:18,484 INFO ]: Found error trace [2018-06-22 01:50:18,484 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:50:18,484 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:50:18,484 INFO ]: Analyzing trace with hash 895211507, now seen corresponding path program 1 times [2018-06-22 01:50:18,484 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:50:18,484 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:50:18,485 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:18,485 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:50:18,485 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:18,509 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:18,807 INFO ]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:50:18,807 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:50:18,807 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 01:50:18,816 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:50:18,865 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:18,879 INFO ]: Computing forward predicates... [2018-06-22 01:50:19,159 INFO ]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:50:19,187 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:50:19,187 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-06-22 01:50:19,188 INFO ]: Interpolant automaton has 9 states [2018-06-22 01:50:19,188 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 01:50:19,188 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 01:50:19,188 INFO ]: Start difference. First operand 21 states and 25 transitions. Second operand 9 states. [2018-06-22 01:50:19,573 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:50:19,573 INFO ]: Finished difference Result 38 states and 54 transitions. [2018-06-22 01:50:19,574 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 01:50:19,574 INFO ]: Start accepts. Automaton has 9 states. Word has length 16 [2018-06-22 01:50:19,574 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:50:19,578 INFO ]: With dead ends: 38 [2018-06-22 01:50:19,578 INFO ]: Without dead ends: 38 [2018-06-22 01:50:19,578 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-06-22 01:50:19,579 INFO ]: Start minimizeSevpa. Operand 38 states. [2018-06-22 01:50:19,587 INFO ]: Finished minimizeSevpa. Reduced states from 38 to 30. [2018-06-22 01:50:19,587 INFO ]: Start removeUnreachable. Operand 30 states. [2018-06-22 01:50:19,589 INFO ]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2018-06-22 01:50:19,589 INFO ]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 16 [2018-06-22 01:50:19,589 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:50:19,589 INFO ]: Abstraction has 30 states and 40 transitions. [2018-06-22 01:50:19,589 INFO ]: Interpolant automaton has 9 states. [2018-06-22 01:50:19,590 INFO ]: Start isEmpty. Operand 30 states and 40 transitions. [2018-06-22 01:50:19,591 INFO ]: Finished isEmpty. Found accepting run of length 25 [2018-06-22 01:50:19,591 INFO ]: Found error trace [2018-06-22 01:50:19,591 INFO ]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-06-22 01:50:19,591 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:50:19,592 INFO ]: Analyzing trace with hash -873482372, now seen corresponding path program 2 times [2018-06-22 01:50:19,592 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:50:19,592 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:50:19,593 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:19,593 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:50:19,593 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:19,615 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:19,890 INFO ]: Checked inductivity of 24 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 01:50:19,890 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:50:19,890 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 01:50:19,899 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 01:50:19,942 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 01:50:19,942 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:19,946 INFO ]: Computing forward predicates... [2018-06-22 01:50:20,752 INFO ]: Checked inductivity of 24 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 01:50:20,772 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:50:20,772 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2018-06-22 01:50:20,773 INFO ]: Interpolant automaton has 20 states [2018-06-22 01:50:20,773 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 01:50:20,773 INFO ]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2018-06-22 01:50:20,773 INFO ]: Start difference. First operand 30 states and 40 transitions. Second operand 20 states. [2018-06-22 01:50:23,361 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:50:23,361 INFO ]: Finished difference Result 99 states and 174 transitions. [2018-06-22 01:50:23,361 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-06-22 01:50:23,361 INFO ]: Start accepts. Automaton has 20 states. Word has length 24 [2018-06-22 01:50:23,362 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:50:23,365 INFO ]: With dead ends: 99 [2018-06-22 01:50:23,365 INFO ]: Without dead ends: 75 [2018-06-22 01:50:23,367 INFO ]: 0 DeclaredPredicates, 100 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1402 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=845, Invalid=4411, Unknown=0, NotChecked=0, Total=5256 [2018-06-22 01:50:23,367 INFO ]: Start minimizeSevpa. Operand 75 states. [2018-06-22 01:50:23,382 INFO ]: Finished minimizeSevpa. Reduced states from 75 to 44. [2018-06-22 01:50:23,382 INFO ]: Start removeUnreachable. Operand 44 states. [2018-06-22 01:50:23,383 INFO ]: Finished removeUnreachable. Reduced from 44 states to 44 states and 64 transitions. [2018-06-22 01:50:23,383 INFO ]: Start accepts. Automaton has 44 states and 64 transitions. Word has length 24 [2018-06-22 01:50:23,383 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:50:23,384 INFO ]: Abstraction has 44 states and 64 transitions. [2018-06-22 01:50:23,384 INFO ]: Interpolant automaton has 20 states. [2018-06-22 01:50:23,384 INFO ]: Start isEmpty. Operand 44 states and 64 transitions. [2018-06-22 01:50:23,385 INFO ]: Finished isEmpty. Found accepting run of length 25 [2018-06-22 01:50:23,385 INFO ]: Found error trace [2018-06-22 01:50:23,385 INFO ]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-06-22 01:50:23,385 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:50:23,385 INFO ]: Analyzing trace with hash -350718212, now seen corresponding path program 3 times [2018-06-22 01:50:23,386 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:50:23,386 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:50:23,386 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:23,387 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:50:23,387 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:23,401 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:23,483 INFO ]: Checked inductivity of 24 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 01:50:23,483 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:50:23,483 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 01:50:23,501 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 01:50:23,558 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 01:50:23,558 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:23,561 INFO ]: Computing forward predicates... [2018-06-22 01:50:23,716 INFO ]: Checked inductivity of 24 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 01:50:23,741 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:50:23,741 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-06-22 01:50:23,741 INFO ]: Interpolant automaton has 12 states [2018-06-22 01:50:23,741 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 01:50:23,741 INFO ]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-06-22 01:50:23,742 INFO ]: Start difference. First operand 44 states and 64 transitions. Second operand 12 states. [2018-06-22 01:50:23,911 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:50:23,911 INFO ]: Finished difference Result 70 states and 105 transitions. [2018-06-22 01:50:23,912 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 01:50:23,912 INFO ]: Start accepts. Automaton has 12 states. Word has length 24 [2018-06-22 01:50:23,913 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:50:23,914 INFO ]: With dead ends: 70 [2018-06-22 01:50:23,914 INFO ]: Without dead ends: 70 [2018-06-22 01:50:23,915 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2018-06-22 01:50:23,915 INFO ]: Start minimizeSevpa. Operand 70 states. [2018-06-22 01:50:23,925 INFO ]: Finished minimizeSevpa. Reduced states from 70 to 48. [2018-06-22 01:50:23,925 INFO ]: Start removeUnreachable. Operand 48 states. [2018-06-22 01:50:23,927 INFO ]: Finished removeUnreachable. Reduced from 48 states to 48 states and 74 transitions. [2018-06-22 01:50:23,927 INFO ]: Start accepts. Automaton has 48 states and 74 transitions. Word has length 24 [2018-06-22 01:50:23,927 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:50:23,927 INFO ]: Abstraction has 48 states and 74 transitions. [2018-06-22 01:50:23,927 INFO ]: Interpolant automaton has 12 states. [2018-06-22 01:50:23,927 INFO ]: Start isEmpty. Operand 48 states and 74 transitions. [2018-06-22 01:50:23,930 INFO ]: Finished isEmpty. Found accepting run of length 33 [2018-06-22 01:50:23,930 INFO ]: Found error trace [2018-06-22 01:50:23,930 INFO ]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2018-06-22 01:50:23,930 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:50:23,930 INFO ]: Analyzing trace with hash -600965883, now seen corresponding path program 4 times [2018-06-22 01:50:23,930 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:50:23,930 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:50:23,931 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:23,931 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:50:23,931 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:50:23,952 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:24,088 INFO ]: Checked inductivity of 51 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-06-22 01:50:24,088 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:50:24,088 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 01:50:24,095 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 01:50:24,116 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 01:50:24,116 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:50:24,120 INFO ]: Computing forward predicates... [2018-06-22 01:50:24,376 INFO ]: Checked inductivity of 51 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 01:50:24,398 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:50:24,398 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 18 [2018-06-22 01:50:24,398 INFO ]: Interpolant automaton has 18 states [2018-06-22 01:50:24,399 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 01:50:24,399 INFO ]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2018-06-22 01:50:24,399 INFO ]: Start difference. First operand 48 states and 74 transitions. Second operand 18 states. [2018-06-22 01:50:24,594 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:50:24,594 INFO ]: Finished difference Result 57 states and 80 transitions. [2018-06-22 01:50:24,597 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-22 01:50:24,597 INFO ]: Start accepts. Automaton has 18 states. Word has length 32 [2018-06-22 01:50:24,597 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:50:24,597 INFO ]: With dead ends: 57 [2018-06-22 01:50:24,597 INFO ]: Without dead ends: 0 [2018-06-22 01:50:24,598 INFO ]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2018-06-22 01:50:24,598 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:50:24,598 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:50:24,598 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:50:24,598 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:50:24,598 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-06-22 01:50:24,598 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:50:24,598 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:50:24,598 INFO ]: Interpolant automaton has 18 states. [2018-06-22 01:50:24,598 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:50:24,598 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:50:24,604 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:50:24 BoogieIcfgContainer [2018-06-22 01:50:24,604 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:50:24,605 INFO ]: Toolchain (without parser) took 7174.11 ms. Allocated memory was 309.3 MB in the beginning and 381.2 MB in the end (delta: 71.8 MB). Free memory was 265.9 MB in the beginning and 302.0 MB in the end (delta: -36.2 MB). Peak memory consumption was 35.6 MB. Max. memory is 3.6 GB. [2018-06-22 01:50:24,608 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 309.3 MB. Free memory is still 274.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:50:24,608 INFO ]: ChcToBoogie took 66.75 ms. Allocated memory is still 309.3 MB. Free memory was 265.9 MB in the beginning and 263.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:50:24,609 INFO ]: Boogie Preprocessor took 35.98 ms. Allocated memory is still 309.3 MB. Free memory was 263.9 MB in the beginning and 261.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:50:24,609 INFO ]: RCFGBuilder took 314.42 ms. Allocated memory is still 309.3 MB. Free memory was 261.9 MB in the beginning and 255.9 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:50:24,610 INFO ]: TraceAbstraction took 6739.67 ms. Allocated memory was 309.3 MB in the beginning and 381.2 MB in the end (delta: 71.8 MB). Free memory was 255.9 MB in the beginning and 302.0 MB in the end (delta: -46.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 3.6 GB. [2018-06-22 01:50:24,614 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 309.3 MB. Free memory is still 274.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 66.75 ms. Allocated memory is still 309.3 MB. Free memory was 265.9 MB in the beginning and 263.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 35.98 ms. Allocated memory is still 309.3 MB. Free memory was 263.9 MB in the beginning and 261.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 314.42 ms. Allocated memory is still 309.3 MB. Free memory was 261.9 MB in the beginning and 255.9 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 6739.67 ms. Allocated memory was 309.3 MB in the beginning and 381.2 MB in the end (delta: 71.8 MB). Free memory was 255.9 MB in the beginning and 302.0 MB in the end (delta: -46.2 MB). Peak memory consumption was 25.6 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, 6.6s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 3.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 119 SDslu, 223 SDs, 0 SdLazy, 826 SolverSat, 321 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1536 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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, 6 MinimizatonAttempts, 65 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 207 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 14936 SizeOfPredicates, 45 NumberOfNonLiveVariables, 380 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 130/212 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_98.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-50-24-626.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_98.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-50-24-626.csv Received shutdown request...