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/termination/toChurch05.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:57:49,939 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:57:49,942 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:57:49,954 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:57:49,954 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:57:49,955 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:57:49,958 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:57:49,961 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:57:49,962 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:57:49,964 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:57:49,965 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:57:49,965 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:57:49,966 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:57:49,967 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:57:49,971 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:57:49,972 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:57:49,974 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:57:49,984 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:57:49,986 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:57:49,987 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:57:49,988 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:57:49,994 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:57:49,994 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:57:49,994 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:57:49,995 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:57:49,996 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:57:49,997 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:57:49,997 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:57:50,001 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:57:50,001 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:57:50,001 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:57:50,002 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:57:50,002 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:57:50,003 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:57:50,003 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:57:50,006 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:57:50,030 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:57:50,031 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:57:50,032 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:57:50,032 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:57:50,033 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:57:50,033 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:57:50,033 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:57:50,033 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:57:50,034 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:57:50,034 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:57:50,034 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:57:50,034 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:57:50,034 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:57:50,034 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:57:50,035 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:57:50,037 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:57:50,038 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:57:50,039 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:57:50,039 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:57:50,093 INFO ]: Repository-Root is: /tmp [2018-06-22 01:57:50,107 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:57:50,111 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:57:50,112 INFO ]: Initializing SmtParser... [2018-06-22 01:57:50,113 INFO ]: SmtParser initialized [2018-06-22 01:57:50,113 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/termination/toChurch05.smt2 [2018-06-22 01:57:50,115 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 01:57:50,206 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/termination/toChurch05.smt2 unknown [2018-06-22 01:57:51,074 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/termination/toChurch05.smt2 [2018-06-22 01:57:51,080 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:57:51,087 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:57:51,087 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:57:51,087 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:57:51,088 INFO ]: ChcToBoogie initialized [2018-06-22 01:57:51,092 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:57:51" (1/1) ... [2018-06-22 01:57:51,171 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:57:51 Unit [2018-06-22 01:57:51,171 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:57:51,172 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:57:51,172 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:57:51,172 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:57:51,195 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:57:51" (1/1) ... [2018-06-22 01:57:51,195 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:57:51" (1/1) ... [2018-06-22 01:57:51,216 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:57:51" (1/1) ... [2018-06-22 01:57:51,216 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:57:51" (1/1) ... [2018-06-22 01:57:51,223 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:57:51" (1/1) ... [2018-06-22 01:57:51,233 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:57:51" (1/1) ... [2018-06-22 01:57:51,236 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:57:51" (1/1) ... [2018-06-22 01:57:51,247 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:57:51,248 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:57:51,248 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:57:51,248 INFO ]: RCFGBuilder initialized [2018-06-22 01:57:51,249 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:57:51" (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 01:57:51,273 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:57:51,273 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:57:51,273 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:57:51,273 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:57:51,273 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:57:51,273 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 01:57:52,251 INFO ]: Using library mode [2018-06-22 01:57:52,252 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:57:52 BoogieIcfgContainer [2018-06-22 01:57:52,252 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:57:52,253 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:57:52,254 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:57:52,257 INFO ]: TraceAbstraction initialized [2018-06-22 01:57:52,257 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:57:51" (1/3) ... [2018-06-22 01:57:52,258 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795e4386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:57:52, skipping insertion in model container [2018-06-22 01:57:52,258 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:57:51" (2/3) ... [2018-06-22 01:57:52,258 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795e4386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:57:52, skipping insertion in model container [2018-06-22 01:57:52,258 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:57:52" (3/3) ... [2018-06-22 01:57:52,266 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:57:52,274 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:57:52,283 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:57:52,322 INFO ]: Using default assertion order modulation [2018-06-22 01:57:52,323 INFO ]: Interprodecural is true [2018-06-22 01:57:52,323 INFO ]: Hoare is false [2018-06-22 01:57:52,323 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:57:52,323 INFO ]: Backedges is TWOTRACK [2018-06-22 01:57:52,323 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:57:52,323 INFO ]: Difference is false [2018-06-22 01:57:52,323 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:57:52,323 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:57:52,342 INFO ]: Start isEmpty. Operand 23 states. [2018-06-22 01:57:52,355 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:57:52,355 INFO ]: Found error trace [2018-06-22 01:57:52,356 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:57:52,356 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:57:52,359 INFO ]: Analyzing trace with hash -102609642, now seen corresponding path program 1 times [2018-06-22 01:57:52,361 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:57:52,361 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:57:52,397 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:57:52,397 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:57:52,397 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:57:52,427 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:57:52,466 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:57:52,470 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:57:52,470 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 01:57:52,472 INFO ]: Interpolant automaton has 2 states [2018-06-22 01:57:52,489 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 01:57:52,489 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 01:57:52,492 INFO ]: Start difference. First operand 23 states. Second operand 2 states. [2018-06-22 01:57:52,527 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:57:52,528 INFO ]: Finished difference Result 21 states and 28 transitions. [2018-06-22 01:57:52,528 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 01:57:52,529 INFO ]: Start accepts. Automaton has 2 states. Word has length 7 [2018-06-22 01:57:52,529 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:57:52,540 INFO ]: With dead ends: 21 [2018-06-22 01:57:52,540 INFO ]: Without dead ends: 19 [2018-06-22 01:57:52,542 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 01:57:52,559 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 01:57:52,592 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 01:57:52,593 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 01:57:52,594 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2018-06-22 01:57:52,597 INFO ]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 7 [2018-06-22 01:57:52,597 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:57:52,597 INFO ]: Abstraction has 19 states and 25 transitions. [2018-06-22 01:57:52,597 INFO ]: Interpolant automaton has 2 states. [2018-06-22 01:57:52,597 INFO ]: Start isEmpty. Operand 19 states and 25 transitions. [2018-06-22 01:57:52,598 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 01:57:52,598 INFO ]: Found error trace [2018-06-22 01:57:52,598 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:57:52,598 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:57:52,598 INFO ]: Analyzing trace with hash 906872480, now seen corresponding path program 1 times [2018-06-22 01:57:52,599 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:57:52,599 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:57:52,599 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:57:52,599 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:57:52,599 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:57:52,615 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-22 01:57:52,615 INFO ]: Advancing trace checker [2018-06-22 01:57:52,615 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-22 01:57:52,624 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:57:52,695 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:57:52,703 INFO ]: Computing forward predicates... [2018-06-22 01:57:52,858 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:57:52,893 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:57:52,893 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:57:52,895 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:57:52,895 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:57:52,895 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:57:52,895 INFO ]: Start difference. First operand 19 states and 25 transitions. Second operand 4 states. [2018-06-22 01:57:53,338 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:57:53,338 INFO ]: Finished difference Result 31 states and 39 transitions. [2018-06-22 01:57:53,339 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:57:53,339 INFO ]: Start accepts. Automaton has 4 states. Word has length 11 [2018-06-22 01:57:53,339 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:57:53,340 INFO ]: With dead ends: 31 [2018-06-22 01:57:53,340 INFO ]: Without dead ends: 31 [2018-06-22 01:57:53,341 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:57:53,341 INFO ]: Start minimizeSevpa. Operand 31 states. [2018-06-22 01:57:53,354 INFO ]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-06-22 01:57:53,354 INFO ]: Start removeUnreachable. Operand 31 states. [2018-06-22 01:57:53,355 INFO ]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2018-06-22 01:57:53,356 INFO ]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 11 [2018-06-22 01:57:53,356 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:57:53,356 INFO ]: Abstraction has 31 states and 39 transitions. [2018-06-22 01:57:53,356 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:57:53,356 INFO ]: Start isEmpty. Operand 31 states and 39 transitions. [2018-06-22 01:57:53,356 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 01:57:53,356 INFO ]: Found error trace [2018-06-22 01:57:53,356 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:57:53,357 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:57:53,358 INFO ]: Analyzing trace with hash 1123907560, now seen corresponding path program 1 times [2018-06-22 01:57:53,358 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:57:53,358 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:57:53,359 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:57:53,359 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:57:53,359 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:57:53,374 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-22 01:57:53,375 INFO ]: Advancing trace checker [2018-06-22 01:57:53,375 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-22 01:57:53,385 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:57:53,437 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:57:53,440 INFO ]: Computing forward predicates... [2018-06-22 01:57:53,587 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:57:53,612 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:57:53,612 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:57:53,612 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:57:53,612 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:57:53,612 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:57:53,612 INFO ]: Start difference. First operand 31 states and 39 transitions. Second operand 4 states. [2018-06-22 01:57:53,856 WARN ]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 01:57:53,937 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:57:53,937 INFO ]: Finished difference Result 43 states and 61 transitions. [2018-06-22 01:57:53,939 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 01:57:53,939 INFO ]: Start accepts. Automaton has 4 states. Word has length 12 [2018-06-22 01:57:53,939 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:57:53,942 INFO ]: With dead ends: 43 [2018-06-22 01:57:53,942 INFO ]: Without dead ends: 43 [2018-06-22 01:57:53,942 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:57:53,942 INFO ]: Start minimizeSevpa. Operand 43 states. [2018-06-22 01:57:53,953 INFO ]: Finished minimizeSevpa. Reduced states from 43 to 34. [2018-06-22 01:57:53,953 INFO ]: Start removeUnreachable. Operand 34 states. [2018-06-22 01:57:53,957 INFO ]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2018-06-22 01:57:53,957 INFO ]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 12 [2018-06-22 01:57:53,957 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:57:53,957 INFO ]: Abstraction has 34 states and 42 transitions. [2018-06-22 01:57:53,957 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:57:53,957 INFO ]: Start isEmpty. Operand 34 states and 42 transitions. [2018-06-22 01:57:53,960 INFO ]: Finished isEmpty. Found accepting run of length 25 [2018-06-22 01:57:53,960 INFO ]: Found error trace [2018-06-22 01:57:53,960 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:57:53,961 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:57:53,961 INFO ]: Analyzing trace with hash 841802999, now seen corresponding path program 1 times [2018-06-22 01:57:53,961 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:57:53,961 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:57:53,961 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:57:53,961 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:57:53,962 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:57:53,997 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-22 01:57:53,998 INFO ]: Advancing trace checker [2018-06-22 01:57:53,998 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-22 01:57:54,027 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:57:54,119 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:57:54,124 INFO ]: Computing forward predicates... [2018-06-22 01:57:54,178 INFO ]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 01:57:54,223 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:57:54,223 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:57:54,223 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:57:54,223 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:57:54,223 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:57:54,224 INFO ]: Start difference. First operand 34 states and 42 transitions. Second operand 3 states. [2018-06-22 01:57:54,288 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:57:54,288 INFO ]: Finished difference Result 35 states and 42 transitions. [2018-06-22 01:57:54,289 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:57:54,289 INFO ]: Start accepts. Automaton has 3 states. Word has length 24 [2018-06-22 01:57:54,289 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:57:54,291 INFO ]: With dead ends: 35 [2018-06-22 01:57:54,291 INFO ]: Without dead ends: 34 [2018-06-22 01:57:54,291 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 22 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 01:57:54,291 INFO ]: Start minimizeSevpa. Operand 34 states. [2018-06-22 01:57:54,297 INFO ]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-06-22 01:57:54,297 INFO ]: Start removeUnreachable. Operand 34 states. [2018-06-22 01:57:54,298 INFO ]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2018-06-22 01:57:54,299 INFO ]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 24 [2018-06-22 01:57:54,299 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:57:54,299 INFO ]: Abstraction has 34 states and 41 transitions. [2018-06-22 01:57:54,299 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:57:54,299 INFO ]: Start isEmpty. Operand 34 states and 41 transitions. [2018-06-22 01:57:54,300 INFO ]: Finished isEmpty. Found accepting run of length 25 [2018-06-22 01:57:54,300 INFO ]: Found error trace [2018-06-22 01:57:54,300 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:57:54,300 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:57:54,300 INFO ]: Analyzing trace with hash 55748979, now seen corresponding path program 1 times [2018-06-22 01:57:54,300 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:57:54,300 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:57:54,304 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:57:54,304 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:57:54,304 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:57:54,341 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-22 01:57:54,341 INFO ]: Advancing trace checker [2018-06-22 01:57:54,341 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 (exit command is (exit), workingDir is null) [2018-06-22 01:57:54,355 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-22 01:57:54,441 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:57:54,446 INFO ]: Computing forward predicates... [2018-06-22 01:57:54,623 INFO ]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 01:57:54,658 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:57:54,658 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-06-22 01:57:54,659 INFO ]: Interpolant automaton has 6 states [2018-06-22 01:57:54,659 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 01:57:54,659 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 01:57:54,659 INFO ]: Start difference. First operand 34 states and 41 transitions. Second operand 6 states. [2018-06-22 01:57:55,222 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:57:55,222 INFO ]: Finished difference Result 68 states and 102 transitions. [2018-06-22 01:57:55,253 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 01:57:55,253 INFO ]: Start accepts. Automaton has 6 states. Word has length 24 [2018-06-22 01:57:55,254 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:57:55,256 INFO ]: With dead ends: 68 [2018-06-22 01:57:55,256 INFO ]: Without dead ends: 68 [2018-06-22 01:57:55,256 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-06-22 01:57:55,256 INFO ]: Start minimizeSevpa. Operand 68 states. [2018-06-22 01:57:55,267 INFO ]: Finished minimizeSevpa. Reduced states from 68 to 60. [2018-06-22 01:57:55,268 INFO ]: Start removeUnreachable. Operand 60 states. [2018-06-22 01:57:55,270 INFO ]: Finished removeUnreachable. Reduced from 60 states to 60 states and 84 transitions. [2018-06-22 01:57:55,270 INFO ]: Start accepts. Automaton has 60 states and 84 transitions. Word has length 24 [2018-06-22 01:57:55,270 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:57:55,270 INFO ]: Abstraction has 60 states and 84 transitions. [2018-06-22 01:57:55,270 INFO ]: Interpolant automaton has 6 states. [2018-06-22 01:57:55,270 INFO ]: Start isEmpty. Operand 60 states and 84 transitions. [2018-06-22 01:57:55,273 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 01:57:55,273 INFO ]: Found error trace [2018-06-22 01:57:55,273 INFO ]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:57:55,273 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:57:55,273 INFO ]: Analyzing trace with hash 1720917536, now seen corresponding path program 1 times [2018-06-22 01:57:55,273 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:57:55,273 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:57:55,274 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:57:55,274 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:57:55,274 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:57:55,293 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-22 01:57:55,293 INFO ]: Advancing trace checker [2018-06-22 01:57:55,293 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-22 01:57:55,307 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:57:55,454 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:57:55,461 INFO ]: Computing forward predicates... [2018-06-22 01:57:55,590 INFO ]: Checked inductivity of 55 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-22 01:57:55,622 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:57:55,623 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:57:55,623 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:57:55,623 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:57:55,623 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:57:55,623 INFO ]: Start difference. First operand 60 states and 84 transitions. Second operand 4 states. [2018-06-22 01:57:55,868 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:57:55,868 INFO ]: Finished difference Result 38 states and 44 transitions. [2018-06-22 01:57:55,868 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:57:55,868 INFO ]: Start accepts. Automaton has 4 states. Word has length 45 [2018-06-22 01:57:55,868 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:57:55,868 INFO ]: With dead ends: 38 [2018-06-22 01:57:55,868 INFO ]: Without dead ends: 0 [2018-06-22 01:57:55,868 INFO ]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:57:55,868 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:57:55,869 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:57:55,869 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:57:55,869 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:57:55,869 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2018-06-22 01:57:55,869 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:57:55,869 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:57:55,869 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:57:55,869 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:57:55,869 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:57:55,873 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:57:55 BoogieIcfgContainer [2018-06-22 01:57:55,873 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:57:55,874 INFO ]: Toolchain (without parser) took 4792.94 ms. Allocated memory was 310.4 MB in the beginning and 357.0 MB in the end (delta: 46.7 MB). Free memory was 219.9 MB in the beginning and 261.8 MB in the end (delta: -41.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 3.6 GB. [2018-06-22 01:57:55,875 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 310.4 MB. Free memory is still 275.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:57:55,875 INFO ]: ChcToBoogie took 84.05 ms. Allocated memory is still 310.4 MB. Free memory was 218.9 MB in the beginning and 214.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:57:55,875 INFO ]: Boogie Preprocessor took 75.52 ms. Allocated memory is still 310.4 MB. Free memory was 214.0 MB in the beginning and 213.0 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 01:57:55,876 INFO ]: RCFGBuilder took 1004.25 ms. Allocated memory was 310.4 MB in the beginning and 327.7 MB in the end (delta: 17.3 MB). Free memory was 212.0 MB in the beginning and 286.9 MB in the end (delta: -75.0 MB). Peak memory consumption was 27.7 MB. Max. memory is 3.6 GB. [2018-06-22 01:57:55,876 INFO ]: TraceAbstraction took 3619.59 ms. Allocated memory was 327.7 MB in the beginning and 357.0 MB in the end (delta: 29.4 MB). Free memory was 286.9 MB in the beginning and 261.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 54.5 MB. Max. memory is 3.6 GB. [2018-06-22 01:57:55,878 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 310.4 MB. Free memory is still 275.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 84.05 ms. Allocated memory is still 310.4 MB. Free memory was 218.9 MB in the beginning and 214.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 75.52 ms. Allocated memory is still 310.4 MB. Free memory was 214.0 MB in the beginning and 213.0 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 1004.25 ms. Allocated memory was 310.4 MB in the beginning and 327.7 MB in the end (delta: 17.3 MB). Free memory was 212.0 MB in the beginning and 286.9 MB in the end (delta: -75.0 MB). Peak memory consumption was 27.7 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3619.59 ms. Allocated memory was 327.7 MB in the beginning and 357.0 MB in the end (delta: 29.4 MB). Free memory was 286.9 MB in the beginning and 261.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 54.5 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, 23 locations, 1 error locations. SAFE Result, 3.5s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 147 SDtfs, 108 SDslu, 147 SDs, 0 SdLazy, 147 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 17 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 4891 SizeOfPredicates, 12 NumberOfNonLiveVariables, 2137 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 73/75 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/toChurch05.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-57-55-888.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/toChurch05.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-57-55-888.csv Received shutdown request...