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/vmt-chc-benchmarks/ctigar/gulv_simp.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:25:52,793 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:25:52,796 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:25:52,817 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:25:52,817 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:25:52,818 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:25:52,821 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:25:52,823 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:25:52,825 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:25:52,827 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:25:52,828 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:25:52,828 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:25:52,829 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:25:52,834 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:25:52,835 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:25:52,836 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:25:52,850 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:25:52,852 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:25:52,858 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:25:52,859 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:25:52,861 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:25:52,863 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:25:52,863 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:25:52,868 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:25:52,869 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:25:52,871 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:25:52,872 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:25:52,873 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:25:52,874 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:25:52,874 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:25:52,877 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:25:52,878 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:25:52,878 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:25:52,879 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:25:52,882 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:25:52,882 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:25:52,905 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:25:52,905 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:25:52,905 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:25:52,906 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:25:52,910 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:25:52,910 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:25:52,910 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:25:52,911 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:25:52,911 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:25:52,911 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:25:52,911 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:25:52,911 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:25:52,912 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:25:52,912 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:25:52,912 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:25:52,912 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:25:52,912 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:25:52,915 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:25:52,916 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:25:52,979 INFO ]: Repository-Root is: /tmp [2018-06-22 05:25:52,999 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:25:53,004 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:25:53,006 INFO ]: Initializing SmtParser... [2018-06-22 05:25:53,006 INFO ]: SmtParser initialized [2018-06-22 05:25:53,007 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/gulv_simp.c.smt2 [2018-06-22 05:25:53,009 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 05:25:53,103 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/gulv_simp.c.smt2 unknown [2018-06-22 05:25:53,370 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/gulv_simp.c.smt2 [2018-06-22 05:25:53,380 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:25:53,386 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:25:53,390 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:25:53,390 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:25:53,390 INFO ]: ChcToBoogie initialized [2018-06-22 05:25:53,394 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:25:53" (1/1) ... [2018-06-22 05:25:53,452 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:53 Unit [2018-06-22 05:25:53,452 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:25:53,453 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:25:53,453 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:25:53,453 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:25:53,478 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:53" (1/1) ... [2018-06-22 05:25:53,478 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:53" (1/1) ... [2018-06-22 05:25:53,486 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:53" (1/1) ... [2018-06-22 05:25:53,486 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:53" (1/1) ... [2018-06-22 05:25:53,502 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:53" (1/1) ... [2018-06-22 05:25:53,509 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:53" (1/1) ... [2018-06-22 05:25:53,511 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:53" (1/1) ... [2018-06-22 05:25:53,512 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:25:53,513 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:25:53,513 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:25:53,513 INFO ]: RCFGBuilder initialized [2018-06-22 05:25:53,514 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:53" (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 05:25:53,528 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:25:53,529 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:25:53,529 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:25:53,529 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:25:53,529 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:25:53,529 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 05:25:53,715 INFO ]: Using library mode [2018-06-22 05:25:53,715 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:25:53 BoogieIcfgContainer [2018-06-22 05:25:53,715 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:25:53,718 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:25:53,718 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:25:53,724 INFO ]: TraceAbstraction initialized [2018-06-22 05:25:53,725 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:25:53" (1/3) ... [2018-06-22 05:25:53,726 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d11a2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:25:53, skipping insertion in model container [2018-06-22 05:25:53,726 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:53" (2/3) ... [2018-06-22 05:25:53,727 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d11a2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:25:53, skipping insertion in model container [2018-06-22 05:25:53,727 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:25:53" (3/3) ... [2018-06-22 05:25:53,729 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:25:53,742 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:25:53,754 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:25:53,815 INFO ]: Using default assertion order modulation [2018-06-22 05:25:53,816 INFO ]: Interprodecural is true [2018-06-22 05:25:53,816 INFO ]: Hoare is false [2018-06-22 05:25:53,816 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:25:53,816 INFO ]: Backedges is TWOTRACK [2018-06-22 05:25:53,816 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:25:53,816 INFO ]: Difference is false [2018-06-22 05:25:53,816 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:25:53,816 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:25:53,836 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:25:53,853 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:25:53,853 INFO ]: Found error trace [2018-06-22 05:25:53,854 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:25:53,854 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:25:53,860 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 05:25:53,863 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:25:53,863 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:25:53,901 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:25:53,901 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:25:53,901 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:25:53,947 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:25:54,062 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:25:54,065 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:25:54,065 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:25:54,067 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:25:54,083 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:25:54,084 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:25:54,094 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:25:54,169 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:25:54,169 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:25:54,170 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:25:54,171 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:25:54,171 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:25:54,180 INFO ]: With dead ends: 9 [2018-06-22 05:25:54,180 INFO ]: Without dead ends: 9 [2018-06-22 05:25:54,182 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 05:25:54,197 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:25:54,230 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:25:54,233 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:25:54,233 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:25:54,235 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:25:54,235 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:25:54,235 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:25:54,235 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:25:54,235 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:25:54,235 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:25:54,235 INFO ]: Found error trace [2018-06-22 05:25:54,235 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:25:54,236 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:25:54,237 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 05:25:54,237 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:25:54,237 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:25:54,238 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:25:54,238 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:25:54,238 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:25:54,290 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:25:54,400 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:25:54,400 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:25:54,400 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 05:25:54,419 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:25:54,481 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:25:54,492 INFO ]: Computing forward predicates... [2018-06-22 05:25:54,851 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:25:54,884 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:25:54,884 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 05:25:54,885 INFO ]: Interpolant automaton has 4 states [2018-06-22 05:25:54,885 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 05:25:54,885 INFO ]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-22 05:25:54,885 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2018-06-22 05:25:54,951 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:25:54,951 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 05:25:54,953 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 05:25:54,953 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 05:25:54,953 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:25:54,953 INFO ]: With dead ends: 10 [2018-06-22 05:25:54,953 INFO ]: Without dead ends: 10 [2018-06-22 05:25:54,954 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-22 05:25:54,955 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 05:25:54,956 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 05:25:54,956 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 05:25:54,956 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 05:25:54,956 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 05:25:54,956 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:25:54,956 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 05:25:54,956 INFO ]: Interpolant automaton has 4 states. [2018-06-22 05:25:54,956 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 05:25:54,958 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 05:25:54,958 INFO ]: Found error trace [2018-06-22 05:25:54,958 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:25:54,958 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:25:54,958 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 05:25:54,958 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:25:54,958 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:25:54,959 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:25:54,959 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:25:54,959 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:25:55,014 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:25:55,202 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:25:55,202 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:25:55,202 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 05:25:55,210 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 05:25:55,257 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:25:55,257 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:25:55,260 INFO ]: Computing forward predicates... [2018-06-22 05:25:55,624 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:25:55,649 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:25:55,649 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-22 05:25:55,650 INFO ]: Interpolant automaton has 6 states [2018-06-22 05:25:55,650 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 05:25:55,650 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:25:55,650 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-06-22 05:25:55,980 WARN ]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 05:25:55,991 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:25:55,991 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:25:55,992 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 05:25:55,992 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-22 05:25:55,992 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:25:55,992 INFO ]: With dead ends: 11 [2018-06-22 05:25:55,992 INFO ]: Without dead ends: 11 [2018-06-22 05:25:55,993 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:25:55,993 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:25:55,994 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:25:55,994 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:25:55,994 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:25:55,994 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 05:25:55,994 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:25:55,994 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:25:55,994 INFO ]: Interpolant automaton has 6 states. [2018-06-22 05:25:55,994 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:25:55,994 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:25:55,994 INFO ]: Found error trace [2018-06-22 05:25:55,994 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:25:55,994 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:25:55,995 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-22 05:25:55,995 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:25:55,995 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:25:55,995 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:25:55,995 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:25:55,996 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:25:56,061 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:25:56,239 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:25:56,239 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:25:56,239 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 05:25:56,245 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:25:56,336 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 05:25:56,336 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:25:56,339 INFO ]: Computing forward predicates... [2018-06-22 05:25:57,718 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:25:57,742 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:25:57,742 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 05:25:57,743 INFO ]: Interpolant automaton has 7 states [2018-06-22 05:25:57,743 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 05:25:57,743 INFO ]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-06-22 05:25:57,743 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-06-22 05:25:57,870 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:25:57,870 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 05:25:57,870 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 05:25:57,870 INFO ]: Start accepts. Automaton has 7 states. Word has length 10 [2018-06-22 05:25:57,870 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:25:57,871 INFO ]: With dead ends: 12 [2018-06-22 05:25:57,871 INFO ]: Without dead ends: 12 [2018-06-22 05:25:57,871 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-06-22 05:25:57,871 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 05:25:57,873 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 05:25:57,873 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 05:25:57,873 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 05:25:57,873 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-22 05:25:57,873 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:25:57,873 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 05:25:57,873 INFO ]: Interpolant automaton has 7 states. [2018-06-22 05:25:57,874 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 05:25:57,874 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 05:25:57,874 INFO ]: Found error trace [2018-06-22 05:25:57,874 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:25:57,874 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:25:57,874 INFO ]: Analyzing trace with hash 201204236, now seen corresponding path program 4 times [2018-06-22 05:25:57,874 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:25:57,874 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:25:57,875 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:25:57,875 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:25:57,875 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:25:57,928 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:25:58,152 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:25:58,152 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:25:58,152 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 05:25:58,162 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 05:25:58,225 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 05:25:58,225 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:25:58,228 INFO ]: Computing forward predicates... [2018-06-22 05:26:01,559 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:26:01,580 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:26:01,580 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-06-22 05:26:01,580 INFO ]: Interpolant automaton has 8 states [2018-06-22 05:26:01,580 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 05:26:01,580 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:26:01,581 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 8 states. [2018-06-22 05:26:01,756 WARN ]: Spent 133.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2018-06-22 05:26:01,938 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:26:01,938 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 05:26:01,939 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 05:26:01,939 INFO ]: Start accepts. Automaton has 8 states. Word has length 11 [2018-06-22 05:26:01,939 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:26:01,939 INFO ]: With dead ends: 13 [2018-06-22 05:26:01,939 INFO ]: Without dead ends: 13 [2018-06-22 05:26:01,940 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2018-06-22 05:26:01,940 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 05:26:01,941 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 05:26:01,941 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 05:26:01,941 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 05:26:01,942 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-22 05:26:01,942 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:26:01,942 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 05:26:01,942 INFO ]: Interpolant automaton has 8 states. [2018-06-22 05:26:01,942 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 05:26:01,942 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 05:26:01,942 INFO ]: Found error trace [2018-06-22 05:26:01,942 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:26:01,942 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:26:01,942 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 5 times [2018-06-22 05:26:01,942 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:26:01,942 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:26:01,943 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:26:01,943 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:26:01,943 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:26:01,979 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:26:02,156 WARN ]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 05:26:02,465 WARN ]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-06-22 05:26:02,524 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:26:02,524 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:26:02,524 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:26:02,531 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 05:26:02,580 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-22 05:26:02,580 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:26:02,584 INFO ]: Computing forward predicates... [2018-06-22 05:26:12,032 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:26:50,143 WARN ]: Spent 196.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 17 [2018-06-22 05:26:50,273 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:26:50,294 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:26:50,295 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2018-06-22 05:26:50,295 INFO ]: Interpolant automaton has 10 states [2018-06-22 05:26:50,295 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 05:26:50,295 INFO ]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-06-22 05:26:50,295 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 10 states. [2018-06-22 05:26:50,426 WARN ]: Spent 112.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2018-06-22 05:26:50,733 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:26:50,733 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 05:26:50,733 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 05:26:50,733 INFO ]: Start accepts. Automaton has 10 states. Word has length 12 [2018-06-22 05:26:50,734 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:26:50,734 INFO ]: With dead ends: 14 [2018-06-22 05:26:50,734 INFO ]: Without dead ends: 14 [2018-06-22 05:26:50,734 INFO ]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2018-06-22 05:26:50,734 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 05:26:50,736 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 05:26:50,736 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 05:26:50,736 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 05:26:50,737 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-22 05:26:50,737 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:26:50,737 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 05:26:50,737 INFO ]: Interpolant automaton has 10 states. [2018-06-22 05:26:50,737 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 05:26:50,737 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 05:26:50,737 INFO ]: Found error trace [2018-06-22 05:26:50,737 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:26:50,737 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:26:50,737 INFO ]: Analyzing trace with hash 23503628, now seen corresponding path program 6 times [2018-06-22 05:26:50,737 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:26:50,737 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:26:50,738 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:26:50,738 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:26:50,738 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:26:50,788 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:26:51,890 WARN ]: Spent 835.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-06-22 05:26:52,073 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:26:52,073 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:26:52,073 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:26:52,100 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 05:26:52,149 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-06-22 05:26:52,149 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:26:52,154 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 05:26:59,142 INFO ]: Timeout while computing interpolants [2018-06-22 05:26:59,343 WARN ]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:26:59,343 WARN ]: Verification canceled [2018-06-22 05:26:59,347 WARN ]: Timeout [2018-06-22 05:26:59,347 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:26:59 BoogieIcfgContainer [2018-06-22 05:26:59,347 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:26:59,348 INFO ]: Toolchain (without parser) took 65967.21 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 260.1 MB in the beginning and 900.4 MB in the end (delta: -640.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:26:59,349 INFO ]: SmtParser took 0.14 ms. Allocated memory is still 307.8 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:26:59,349 INFO ]: ChcToBoogie took 62.74 ms. Allocated memory is still 307.8 MB. Free memory was 260.1 MB in the beginning and 258.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:26:59,350 INFO ]: Boogie Preprocessor took 59.47 ms. Allocated memory is still 307.8 MB. Free memory is still 258.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:26:59,350 INFO ]: RCFGBuilder took 202.22 ms. Allocated memory is still 307.8 MB. Free memory was 256.1 MB in the beginning and 248.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:26:59,350 INFO ]: TraceAbstraction took 65629.41 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 248.1 MB in the beginning and 900.4 MB in the end (delta: -652.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:26:59,355 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.14 ms. Allocated memory is still 307.8 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 62.74 ms. Allocated memory is still 307.8 MB. Free memory was 260.1 MB in the beginning and 258.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 59.47 ms. Allocated memory is still 307.8 MB. Free memory is still 258.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 202.22 ms. Allocated memory is still 307.8 MB. Free memory was 256.1 MB in the beginning and 248.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 65629.41 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 248.1 MB in the beginning and 900.4 MB in the end (delta: -652.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 14 with TraceHistMax 6, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 14 quantified variables from 16 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 65.5s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 12 SDslu, 104 SDs, 0 SdLazy, 42 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 40 SyntacticMatches, 12 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=6, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 54.4s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 4110 SizeOfPredicates, 25 NumberOfNonLiveVariables, 690 ConjunctsInSsa, 148 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/70 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/gulv_simp.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-26-59-366.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/gulv_simp.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-26-59-366.csv Completed graceful shutdown