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/llreve-bench/smt2/loop__fib.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 02:12:20,679 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 02:12:20,682 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 02:12:20,696 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 02:12:20,696 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 02:12:20,697 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 02:12:20,698 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 02:12:20,701 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 02:12:20,703 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 02:12:20,705 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 02:12:20,706 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 02:12:20,706 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 02:12:20,707 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 02:12:20,708 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 02:12:20,710 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 02:12:20,711 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 02:12:20,713 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 02:12:20,715 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 02:12:20,726 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 02:12:20,727 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 02:12:20,728 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 02:12:20,731 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 02:12:20,731 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 02:12:20,731 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 02:12:20,732 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 02:12:20,733 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 02:12:20,734 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 02:12:20,734 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 02:12:20,745 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 02:12:20,745 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 02:12:20,746 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 02:12:20,746 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 02:12:20,746 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 02:12:20,747 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 02:12:20,748 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 02:12:20,748 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 02:12:20,767 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 02:12:20,767 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 02:12:20,767 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 02:12:20,768 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 02:12:20,769 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 02:12:20,772 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 02:12:20,772 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 02:12:20,772 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 02:12:20,773 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 02:12:20,773 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 02:12:20,773 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 02:12:20,773 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 02:12:20,773 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 02:12:20,774 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 02:12:20,774 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 02:12:20,774 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 02:12:20,774 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 02:12:20,776 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 02:12:20,777 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 02:12:20,826 INFO ]: Repository-Root is: /tmp [2018-06-22 02:12:20,844 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 02:12:20,852 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 02:12:20,853 INFO ]: Initializing SmtParser... [2018-06-22 02:12:20,853 INFO ]: SmtParser initialized [2018-06-22 02:12:20,854 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/loop__fib.smt2 [2018-06-22 02:12:20,856 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 02:12:20,954 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/loop__fib.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@62e780ba [2018-06-22 02:12:21,117 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/loop__fib.smt2 [2018-06-22 02:12:21,126 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 02:12:21,142 INFO ]: Walking toolchain with 4 elements. [2018-06-22 02:12:21,142 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 02:12:21,142 INFO ]: Initializing ChcToBoogie... [2018-06-22 02:12:21,142 INFO ]: ChcToBoogie initialized [2018-06-22 02:12:21,145 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:12:21" (1/1) ... [2018-06-22 02:12:21,201 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:21 Unit [2018-06-22 02:12:21,201 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 02:12:21,202 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 02:12:21,202 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 02:12:21,202 INFO ]: Boogie Preprocessor initialized [2018-06-22 02:12:21,223 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:21" (1/1) ... [2018-06-22 02:12:21,223 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:21" (1/1) ... [2018-06-22 02:12:21,228 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:21" (1/1) ... [2018-06-22 02:12:21,228 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:21" (1/1) ... [2018-06-22 02:12:21,231 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:21" (1/1) ... [2018-06-22 02:12:21,232 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:21" (1/1) ... [2018-06-22 02:12:21,233 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:21" (1/1) ... [2018-06-22 02:12:21,234 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 02:12:21,237 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 02:12:21,237 INFO ]: Initializing RCFGBuilder... [2018-06-22 02:12:21,237 INFO ]: RCFGBuilder initialized [2018-06-22 02:12:21,238 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:21" (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 02:12:21,250 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 02:12:21,250 INFO ]: Found specification of procedure gotoProc [2018-06-22 02:12:21,250 INFO ]: Found implementation of procedure gotoProc [2018-06-22 02:12:21,250 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 02:12:21,250 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 02:12:21,250 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 02:12:21,384 INFO ]: Using library mode [2018-06-22 02:12:21,385 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:12:21 BoogieIcfgContainer [2018-06-22 02:12:21,385 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 02:12:21,386 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 02:12:21,387 INFO ]: Initializing TraceAbstraction... [2018-06-22 02:12:21,390 INFO ]: TraceAbstraction initialized [2018-06-22 02:12:21,390 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:12:21" (1/3) ... [2018-06-22 02:12:21,391 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402b0edf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:12:21, skipping insertion in model container [2018-06-22 02:12:21,391 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:21" (2/3) ... [2018-06-22 02:12:21,391 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402b0edf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:12:21, skipping insertion in model container [2018-06-22 02:12:21,391 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:12:21" (3/3) ... [2018-06-22 02:12:21,393 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 02:12:21,402 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 02:12:21,408 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 02:12:21,443 INFO ]: Using default assertion order modulation [2018-06-22 02:12:21,443 INFO ]: Interprodecural is true [2018-06-22 02:12:21,443 INFO ]: Hoare is false [2018-06-22 02:12:21,443 INFO ]: Compute interpolants for FPandBP [2018-06-22 02:12:21,443 INFO ]: Backedges is TWOTRACK [2018-06-22 02:12:21,443 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 02:12:21,443 INFO ]: Difference is false [2018-06-22 02:12:21,443 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 02:12:21,443 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 02:12:21,456 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 02:12:21,468 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 02:12:21,468 INFO ]: Found error trace [2018-06-22 02:12:21,471 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:12:21,471 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:12:21,475 INFO ]: Analyzing trace with hash -204783142, now seen corresponding path program 1 times [2018-06-22 02:12:21,476 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:12:21,477 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:12:21,506 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:21,506 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:12:21,506 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:21,540 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:12:21,597 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:12:21,599 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 02:12:21,599 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 02:12:21,601 INFO ]: Interpolant automaton has 3 states [2018-06-22 02:12:21,617 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 02:12:21,617 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 02:12:21,620 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 02:12:21,745 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 02:12:21,745 INFO ]: Finished difference Result 9 states and 13 transitions. [2018-06-22 02:12:21,746 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 02:12:21,747 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 02:12:21,747 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 02:12:21,758 INFO ]: With dead ends: 9 [2018-06-22 02:12:21,758 INFO ]: Without dead ends: 9 [2018-06-22 02:12:21,767 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 02:12:21,792 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 02:12:21,809 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 02:12:21,810 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 02:12:21,811 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2018-06-22 02:12:21,812 INFO ]: Start accepts. Automaton has 9 states and 13 transitions. Word has length 7 [2018-06-22 02:12:21,812 INFO ]: Finished accepts. word is rejected. [2018-06-22 02:12:21,812 INFO ]: Abstraction has 9 states and 13 transitions. [2018-06-22 02:12:21,812 INFO ]: Interpolant automaton has 3 states. [2018-06-22 02:12:21,812 INFO ]: Start isEmpty. Operand 9 states and 13 transitions. [2018-06-22 02:12:21,813 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 02:12:21,813 INFO ]: Found error trace [2018-06-22 02:12:21,813 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:12:21,813 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:12:21,813 INFO ]: Analyzing trace with hash -2057218350, now seen corresponding path program 1 times [2018-06-22 02:12:21,813 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:12:21,813 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:12:21,814 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:21,814 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:12:21,814 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:21,827 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:12:21,899 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:12:21,899 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 02:12:21,899 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 02:12:21,900 INFO ]: Interpolant automaton has 3 states [2018-06-22 02:12:21,900 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 02:12:21,901 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 02:12:21,901 INFO ]: Start difference. First operand 9 states and 13 transitions. Second operand 3 states. [2018-06-22 02:12:21,982 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 02:12:21,982 INFO ]: Finished difference Result 10 states and 15 transitions. [2018-06-22 02:12:21,982 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 02:12:21,982 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-22 02:12:21,982 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 02:12:21,983 INFO ]: With dead ends: 10 [2018-06-22 02:12:21,983 INFO ]: Without dead ends: 9 [2018-06-22 02:12:21,984 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 02:12:21,984 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 02:12:21,984 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 02:12:21,984 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 02:12:21,985 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-06-22 02:12:21,985 INFO ]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 8 [2018-06-22 02:12:21,985 INFO ]: Finished accepts. word is rejected. [2018-06-22 02:12:21,985 INFO ]: Abstraction has 9 states and 11 transitions. [2018-06-22 02:12:21,985 INFO ]: Interpolant automaton has 3 states. [2018-06-22 02:12:21,985 INFO ]: Start isEmpty. Operand 9 states and 11 transitions. [2018-06-22 02:12:21,985 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 02:12:21,985 INFO ]: Found error trace [2018-06-22 02:12:21,985 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:12:21,985 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:12:21,985 INFO ]: Analyzing trace with hash -2050753703, now seen corresponding path program 1 times [2018-06-22 02:12:21,985 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:12:21,985 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:12:21,986 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:21,986 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:12:21,986 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:22,000 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:12:22,046 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:12:22,046 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 02:12:22,046 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 02:12:22,065 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:12:22,097 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:12:22,104 INFO ]: Computing forward predicates... [2018-06-22 02:12:22,177 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:12:22,198 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 02:12:22,198 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 02:12:22,198 INFO ]: Interpolant automaton has 5 states [2018-06-22 02:12:22,198 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 02:12:22,199 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 02:12:22,199 INFO ]: Start difference. First operand 9 states and 11 transitions. Second operand 5 states. [2018-06-22 02:12:22,450 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 02:12:22,451 INFO ]: Finished difference Result 11 states and 14 transitions. [2018-06-22 02:12:22,451 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 02:12:22,451 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 02:12:22,452 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 02:12:22,452 INFO ]: With dead ends: 11 [2018-06-22 02:12:22,452 INFO ]: Without dead ends: 11 [2018-06-22 02:12:22,452 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 02:12:22,452 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 02:12:22,453 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 02:12:22,454 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 02:12:22,454 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-06-22 02:12:22,454 INFO ]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 8 [2018-06-22 02:12:22,454 INFO ]: Finished accepts. word is rejected. [2018-06-22 02:12:22,454 INFO ]: Abstraction has 11 states and 14 transitions. [2018-06-22 02:12:22,454 INFO ]: Interpolant automaton has 5 states. [2018-06-22 02:12:22,454 INFO ]: Start isEmpty. Operand 11 states and 14 transitions. [2018-06-22 02:12:22,454 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 02:12:22,454 INFO ]: Found error trace [2018-06-22 02:12:22,455 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:12:22,455 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:12:22,455 INFO ]: Analyzing trace with hash -2048906661, now seen corresponding path program 1 times [2018-06-22 02:12:22,455 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:12:22,455 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:12:22,458 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:22,458 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:12:22,458 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:22,471 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:12:22,664 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:12:22,664 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 02:12:22,664 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 02:12:22,676 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:12:22,708 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:12:22,710 INFO ]: Computing forward predicates... [2018-06-22 02:12:22,808 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:12:22,841 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 02:12:22,841 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 02:12:22,841 INFO ]: Interpolant automaton has 5 states [2018-06-22 02:12:22,841 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 02:12:22,841 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 02:12:22,841 INFO ]: Start difference. First operand 11 states and 14 transitions. Second operand 5 states. [2018-06-22 02:12:23,000 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 02:12:23,001 INFO ]: Finished difference Result 12 states and 16 transitions. [2018-06-22 02:12:23,001 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 02:12:23,001 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 02:12:23,002 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 02:12:23,002 INFO ]: With dead ends: 12 [2018-06-22 02:12:23,002 INFO ]: Without dead ends: 12 [2018-06-22 02:12:23,002 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 02:12:23,003 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 02:12:23,004 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 02:12:23,004 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 02:12:23,005 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2018-06-22 02:12:23,005 INFO ]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 8 [2018-06-22 02:12:23,005 INFO ]: Finished accepts. word is rejected. [2018-06-22 02:12:23,005 INFO ]: Abstraction has 12 states and 16 transitions. [2018-06-22 02:12:23,005 INFO ]: Interpolant automaton has 5 states. [2018-06-22 02:12:23,005 INFO ]: Start isEmpty. Operand 12 states and 16 transitions. [2018-06-22 02:12:23,005 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 02:12:23,005 INFO ]: Found error trace [2018-06-22 02:12:23,005 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:12:23,005 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:12:23,006 INFO ]: Analyzing trace with hash 910959352, now seen corresponding path program 1 times [2018-06-22 02:12:23,006 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:12:23,006 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:12:23,006 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:23,006 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:12:23,006 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:23,026 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:12:23,168 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:12:23,168 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 02:12:23,168 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 02:12:23,187 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:12:23,231 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:12:23,234 INFO ]: Computing forward predicates... [2018-06-22 02:12:23,336 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:12:23,357 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 02:12:23,357 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-22 02:12:23,358 INFO ]: Interpolant automaton has 6 states [2018-06-22 02:12:23,358 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 02:12:23,358 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-22 02:12:23,358 INFO ]: Start difference. First operand 12 states and 16 transitions. Second operand 6 states. [2018-06-22 02:12:23,512 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 02:12:23,513 INFO ]: Finished difference Result 13 states and 18 transitions. [2018-06-22 02:12:23,513 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 02:12:23,513 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-22 02:12:23,513 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 02:12:23,514 INFO ]: With dead ends: 13 [2018-06-22 02:12:23,514 INFO ]: Without dead ends: 13 [2018-06-22 02:12:23,514 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-22 02:12:23,514 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 02:12:23,516 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 11. [2018-06-22 02:12:23,516 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 02:12:23,516 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-06-22 02:12:23,516 INFO ]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 9 [2018-06-22 02:12:23,516 INFO ]: Finished accepts. word is rejected. [2018-06-22 02:12:23,516 INFO ]: Abstraction has 11 states and 14 transitions. [2018-06-22 02:12:23,516 INFO ]: Interpolant automaton has 6 states. [2018-06-22 02:12:23,516 INFO ]: Start isEmpty. Operand 11 states and 14 transitions. [2018-06-22 02:12:23,517 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 02:12:23,517 INFO ]: Found error trace [2018-06-22 02:12:23,517 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:12:23,517 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:12:23,517 INFO ]: Analyzing trace with hash 912806394, now seen corresponding path program 2 times [2018-06-22 02:12:23,517 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:12:23,517 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:12:23,518 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:23,518 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:12:23,518 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:23,531 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:12:23,590 INFO ]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:12:23,590 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 02:12:23,590 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) [2018-06-22 02:12:23,619 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 02:12:23,650 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 02:12:23,650 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:12:23,651 INFO ]: Computing forward predicates... [2018-06-22 02:12:23,739 INFO ]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:12:23,761 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 02:12:23,761 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2018-06-22 02:12:23,761 INFO ]: Interpolant automaton has 5 states [2018-06-22 02:12:23,761 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 02:12:23,761 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 02:12:23,761 INFO ]: Start difference. First operand 11 states and 14 transitions. Second operand 5 states. [2018-06-22 02:12:23,798 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 02:12:23,798 INFO ]: Finished difference Result 8 states and 12 transitions. [2018-06-22 02:12:23,798 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 02:12:23,798 INFO ]: Start accepts. Automaton has 5 states. Word has length 9 [2018-06-22 02:12:23,798 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 02:12:23,798 INFO ]: With dead ends: 8 [2018-06-22 02:12:23,798 INFO ]: Without dead ends: 0 [2018-06-22 02:12:23,799 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-22 02:12:23,799 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 02:12:23,799 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 02:12:23,799 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 02:12:23,799 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 02:12:23,799 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-06-22 02:12:23,799 INFO ]: Finished accepts. word is rejected. [2018-06-22 02:12:23,799 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 02:12:23,799 INFO ]: Interpolant automaton has 5 states. [2018-06-22 02:12:23,799 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 02:12:23,799 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 02:12:23,804 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:12:23 BoogieIcfgContainer [2018-06-22 02:12:23,804 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 02:12:23,805 INFO ]: Toolchain (without parser) took 2677.97 ms. Allocated memory was 304.1 MB in the beginning and 324.5 MB in the end (delta: 20.4 MB). Free memory was 260.6 MB in the beginning and 280.8 MB in the end (delta: -20.2 MB). Peak memory consumption was 293.8 kB. Max. memory is 3.6 GB. [2018-06-22 02:12:23,807 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 304.1 MB. Free memory is still 269.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 02:12:23,807 INFO ]: ChcToBoogie took 59.32 ms. Allocated memory is still 304.1 MB. Free memory was 260.6 MB in the beginning and 258.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 02:12:23,808 INFO ]: Boogie Preprocessor took 32.49 ms. Allocated memory is still 304.1 MB. Free memory was 258.6 MB in the beginning and 256.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 02:12:23,808 INFO ]: RCFGBuilder took 148.52 ms. Allocated memory is still 304.1 MB. Free memory was 256.6 MB in the beginning and 248.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 02:12:23,809 INFO ]: TraceAbstraction took 2417.52 ms. Allocated memory was 304.1 MB in the beginning and 324.5 MB in the end (delta: 20.4 MB). Free memory was 248.6 MB in the beginning and 280.8 MB in the end (delta: -32.1 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 02:12:23,815 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 304.1 MB. Free memory is still 269.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 59.32 ms. Allocated memory is still 304.1 MB. Free memory was 260.6 MB in the beginning and 258.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 32.49 ms. Allocated memory is still 304.1 MB. Free memory was 258.6 MB in the beginning and 256.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 148.52 ms. Allocated memory is still 304.1 MB. Free memory was 256.6 MB in the beginning and 248.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2417.52 ms. Allocated memory was 304.1 MB in the beginning and 324.5 MB in the end (delta: 20.4 MB). Free memory was 248.6 MB in the beginning and 280.8 MB in the end (delta: -32.1 MB). There was no memory consumed. 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, 10 locations, 1 error locations. SAFE Result, 2.3s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 0 SDslu, 59 SDs, 0 SdLazy, 89 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 1322 SizeOfPredicates, 11 NumberOfNonLiveVariables, 324 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 6/17 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/loop__fib.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_02-12-23-826.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__fib.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_02-12-23-826.csv Received shutdown request...