java -Xss4m -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/cav12/simple_array_inversion-5.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 12:22:06,859 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 12:22:06,861 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 12:22:06,875 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 12:22:06,875 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 12:22:06,876 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 12:22:06,877 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 12:22:06,878 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 12:22:06,880 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 12:22:06,881 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 12:22:06,883 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 12:22:06,883 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 12:22:06,884 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 12:22:06,885 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 12:22:06,885 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 12:22:06,888 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 12:22:06,890 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 12:22:06,891 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 12:22:06,901 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 12:22:06,902 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 12:22:06,903 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 12:22:06,907 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 12:22:06,908 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 12:22:06,908 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 12:22:06,909 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 12:22:06,909 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 12:22:06,912 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 12:22:06,912 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 12:22:06,913 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 12:22:06,913 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 12:22:06,914 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 12:22:06,914 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 12:22:06,918 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 12:22:06,919 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 12:22:06,919 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 12:22:06,919 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 12:22:06,939 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 12:22:06,939 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 12:22:06,939 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 12:22:06,940 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 12:22:06,940 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 12:22:06,941 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 12:22:06,941 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 12:22:06,941 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 12:22:06,941 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 12:22:06,941 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 12:22:06,942 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 12:22:06,943 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 12:22:06,943 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 12:22:06,943 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 12:22:06,943 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 12:22:06,943 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 12:22:06,944 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 12:22:06,944 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 12:22:06,944 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 12:22:06,944 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 12:22:06,944 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 12:22:06,946 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 12:22:06,947 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 12:22:06,998 INFO ]: Repository-Root is: /tmp [2018-06-25 12:22:07,015 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 12:22:07,019 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 12:22:07,020 INFO ]: Initializing SmtParser... [2018-06-25 12:22:07,021 INFO ]: SmtParser initialized [2018-06-25 12:22:07,021 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-5.smt2 [2018-06-25 12:22:07,022 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 [2018-06-25 12:22:07,112 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-5.smt2 unknown [2018-06-25 12:22:07,638 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-5.smt2 [2018-06-25 12:22:07,643 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 12:22:07,649 INFO ]: Walking toolchain with 4 elements. [2018-06-25 12:22:07,649 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 12:22:07,649 INFO ]: Initializing ChcToBoogie... [2018-06-25 12:22:07,649 INFO ]: ChcToBoogie initialized [2018-06-25 12:22:07,652 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:22:07" (1/1) ... [2018-06-25 12:22:07,715 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:22:07 Unit [2018-06-25 12:22:07,715 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 12:22:07,716 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 12:22:07,716 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 12:22:07,716 INFO ]: Boogie Preprocessor initialized [2018-06-25 12:22:07,737 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:22:07" (1/1) ... [2018-06-25 12:22:07,737 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:22:07" (1/1) ... [2018-06-25 12:22:07,750 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:22:07" (1/1) ... [2018-06-25 12:22:07,750 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:22:07" (1/1) ... [2018-06-25 12:22:07,766 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:22:07" (1/1) ... [2018-06-25 12:22:07,769 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:22:07" (1/1) ... [2018-06-25 12:22:07,773 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:22:07" (1/1) ... [2018-06-25 12:22:07,779 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 12:22:07,779 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 12:22:07,779 INFO ]: Initializing RCFGBuilder... [2018-06-25 12:22:07,780 INFO ]: RCFGBuilder initialized [2018-06-25 12:22:07,780 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:22:07" (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) [2018-06-25 12:22:07,820 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 12:22:07,820 INFO ]: Found specification of procedure gotoProc [2018-06-25 12:22:07,820 INFO ]: Found implementation of procedure gotoProc [2018-06-25 12:22:07,820 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 12:22:07,820 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 12:22:07,820 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 [2018-06-25 12:22:08,325 INFO ]: Using library mode [2018-06-25 12:22:08,326 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:22:08 BoogieIcfgContainer [2018-06-25 12:22:08,326 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 12:22:08,327 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 12:22:08,327 INFO ]: Initializing TraceAbstraction... [2018-06-25 12:22:08,331 INFO ]: TraceAbstraction initialized [2018-06-25 12:22:08,331 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:22:07" (1/3) ... [2018-06-25 12:22:08,332 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b129602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 12:22:08, skipping insertion in model container [2018-06-25 12:22:08,332 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:22:07" (2/3) ... [2018-06-25 12:22:08,333 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b129602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 12:22:08, skipping insertion in model container [2018-06-25 12:22:08,333 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:22:08" (3/3) ... [2018-06-25 12:22:08,336 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 12:22:08,345 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 12:22:08,354 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 12:22:08,389 INFO ]: Using default assertion order modulation [2018-06-25 12:22:08,390 INFO ]: Interprodecural is true [2018-06-25 12:22:08,390 INFO ]: Hoare is false [2018-06-25 12:22:08,390 INFO ]: Compute interpolants for FPandBP [2018-06-25 12:22:08,390 INFO ]: Backedges is TWOTRACK [2018-06-25 12:22:08,390 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 12:22:08,390 INFO ]: Difference is false [2018-06-25 12:22:08,390 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 12:22:08,390 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 12:22:08,403 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 12:22:08,418 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 12:22:08,418 INFO ]: Found error trace [2018-06-25 12:22:08,419 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:22:08,419 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:22:08,424 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-25 12:22:08,427 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:22:08,428 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:22:08,466 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:22:08,466 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:22:08,466 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:22:08,540 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:22:08,678 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:22:08,681 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 12:22:08,681 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 12:22:08,683 INFO ]: Interpolant automaton has 3 states [2018-06-25 12:22:08,700 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 12:22:08,700 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 12:22:08,703 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 12:22:08,807 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:22:08,807 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 12:22:08,808 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 12:22:08,809 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 12:22:08,809 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:22:08,817 INFO ]: With dead ends: 9 [2018-06-25 12:22:08,817 INFO ]: Without dead ends: 9 [2018-06-25 12:22:08,819 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 [2018-06-25 12:22:08,831 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 12:22:08,845 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 12:22:08,846 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 12:22:08,846 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 12:22:08,847 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 12:22:08,848 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:22:08,848 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 12:22:08,848 INFO ]: Interpolant automaton has 3 states. [2018-06-25 12:22:08,848 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 12:22:08,848 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 12:22:08,848 INFO ]: Found error trace [2018-06-25 12:22:08,848 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:22:08,848 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:22:08,848 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-25 12:22:08,848 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:22:08,848 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:22:08,849 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:22:08,849 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:22:08,849 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:22:08,992 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:22:09,258 WARN ]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-25 12:22:09,353 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:22:09,353 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:22:09,353 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 [2018-06-25 12:22:09,364 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:22:09,524 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:22:09,539 INFO ]: Computing forward predicates... [2018-06-25 12:22:09,801 WARN ]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-25 12:22:11,200 WARN ]: Spent 210.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-06-25 12:22:11,204 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:22:11,237 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:22:11,237 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-25 12:22:11,238 INFO ]: Interpolant automaton has 6 states [2018-06-25 12:22:11,238 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 12:22:11,238 INFO ]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-25 12:22:11,238 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-25 12:22:11,299 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:22:11,299 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 12:22:11,299 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 12:22:11,299 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-25 12:22:11,300 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:22:11,300 INFO ]: With dead ends: 10 [2018-06-25 12:22:11,300 INFO ]: Without dead ends: 10 [2018-06-25 12:22:11,301 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-06-25 12:22:11,301 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 12:22:11,302 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 12:22:11,302 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 12:22:11,302 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 12:22:11,302 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 12:22:11,302 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:22:11,302 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 12:22:11,302 INFO ]: Interpolant automaton has 6 states. [2018-06-25 12:22:11,302 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 12:22:11,303 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 12:22:11,303 INFO ]: Found error trace [2018-06-25 12:22:11,303 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:22:11,303 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:22:11,303 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-25 12:22:11,303 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:22:11,303 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:22:11,304 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:22:11,304 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:22:11,304 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:22:11,430 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:22:11,752 WARN ]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-25 12:22:11,939 WARN ]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-25 12:22:12,087 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:22:12,087 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:22:12,087 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) [2018-06-25 12:22:12,100 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 12:22:12,238 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 12:22:12,238 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:22:12,245 INFO ]: Computing forward predicates... [2018-06-25 12:22:12,844 WARN ]: Spent 138.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 11 [2018-06-25 12:22:15,100 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:22:15,121 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:22:15,121 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-25 12:22:15,121 INFO ]: Interpolant automaton has 8 states [2018-06-25 12:22:15,121 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 12:22:15,121 INFO ]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-06-25 12:22:15,121 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-25 12:22:15,155 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:22:15,155 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 12:22:15,155 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-25 12:22:15,155 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-25 12:22:15,155 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:22:15,155 INFO ]: With dead ends: 11 [2018-06-25 12:22:15,155 INFO ]: Without dead ends: 11 [2018-06-25 12:22:15,156 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-06-25 12:22:15,156 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 12:22:15,157 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 12:22:15,157 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 12:22:15,157 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 12:22:15,158 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-25 12:22:15,158 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:22:15,158 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 12:22:15,158 INFO ]: Interpolant automaton has 8 states. [2018-06-25 12:22:15,158 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 12:22:15,158 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 12:22:15,158 INFO ]: Found error trace [2018-06-25 12:22:15,158 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:22:15,158 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:22:15,158 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-25 12:22:15,158 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:22:15,158 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:22:15,159 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:22:15,159 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:22:15,159 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:22:15,399 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:22:15,807 WARN ]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-25 12:22:16,014 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:22:16,014 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:22:16,014 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 [2018-06-25 12:22:16,020 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 12:22:16,156 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 12:22:16,156 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:22:16,168 INFO ]: Computing forward predicates... [2018-06-25 12:22:17,878 WARN ]: Spent 505.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 16 [2018-06-25 12:22:22,903 WARN ]: Spent 507.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 25 [2018-06-25 12:22:23,224 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:22:23,246 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:22:23,246 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-25 12:22:23,246 INFO ]: Interpolant automaton has 10 states [2018-06-25 12:22:23,246 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-25 12:22:23,246 INFO ]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-06-25 12:22:23,246 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-25 12:22:23,352 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:22:23,352 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-25 12:22:23,353 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-25 12:22:23,353 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-25 12:22:23,353 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:22:23,353 INFO ]: With dead ends: 13 [2018-06-25 12:22:23,353 INFO ]: Without dead ends: 13 [2018-06-25 12:22:23,354 INFO ]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2018-06-25 12:22:23,354 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-25 12:22:23,355 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-25 12:22:23,355 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-25 12:22:23,356 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-25 12:22:23,356 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-25 12:22:23,356 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:22:23,356 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-25 12:22:23,356 INFO ]: Interpolant automaton has 10 states. [2018-06-25 12:22:23,356 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-25 12:22:23,356 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-25 12:22:23,356 INFO ]: Found error trace [2018-06-25 12:22:23,356 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:22:23,356 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:22:23,356 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 4 times [2018-06-25 12:22:23,356 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:22:23,356 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:22:23,359 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:22:23,359 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:22:23,359 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:22:23,714 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:22:24,264 WARN ]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-25 12:22:24,732 WARN ]: Spent 417.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 9 [2018-06-25 12:22:25,005 WARN ]: Spent 189.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 14 [2018-06-25 12:22:25,106 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:22:25,106 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:22:25,106 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 [2018-06-25 12:22:25,111 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-25 12:22:25,359 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-25 12:22:25,359 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:22:25,373 INFO ]: Computing forward predicates... [2018-06-25 12:22:29,135 WARN ]: Spent 369.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 25 [2018-06-25 12:22:32,181 WARN ]: Spent 393.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 22 [2018-06-25 12:22:35,576 WARN ]: Spent 574.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 19 [2018-06-25 12:22:36,027 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:22:36,050 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:22:36,050 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-25 12:22:36,051 INFO ]: Interpolant automaton has 14 states [2018-06-25 12:22:36,051 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-25 12:22:36,051 INFO ]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2018-06-25 12:22:36,051 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-25 12:22:36,175 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:22:36,175 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-25 12:22:36,176 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-25 12:22:36,176 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-25 12:22:36,176 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:22:36,176 INFO ]: With dead ends: 15 [2018-06-25 12:22:36,176 INFO ]: Without dead ends: 15 [2018-06-25 12:22:36,177 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2018-06-25 12:22:36,177 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-25 12:22:36,178 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-25 12:22:36,178 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-25 12:22:36,179 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-25 12:22:36,179 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-06-25 12:22:36,179 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:22:36,179 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-25 12:22:36,179 INFO ]: Interpolant automaton has 14 states. [2018-06-25 12:22:36,179 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-25 12:22:36,179 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-25 12:22:36,179 INFO ]: Found error trace [2018-06-25 12:22:36,179 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:22:36,179 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:22:36,179 INFO ]: Analyzing trace with hash 726730004, now seen corresponding path program 5 times [2018-06-25 12:22:36,179 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:22:36,179 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:22:36,180 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:22:36,180 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:22:36,180 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:22:36,595 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:22:37,490 WARN ]: Spent 326.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2018-06-25 12:22:37,812 WARN ]: Spent 268.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 57 [2018-06-25 12:22:38,212 WARN ]: Spent 383.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 58 [2018-06-25 12:22:38,620 WARN ]: Spent 359.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 60 [2018-06-25 12:22:38,697 INFO ]: Checked inductivity of 28 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-25 12:22:38,697 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:22:38,697 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 [2018-06-25 12:22:38,705 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-25 12:22:39,058 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-06-25 12:22:39,058 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:22:39,081 INFO ]: Computing forward predicates... [2018-06-25 12:22:54,677 WARN ]: Spent 12.45 s on a formula simplification. DAG size of input: 927 DAG size of output: 139 [2018-06-25 12:23:00,805 WARN ]: Simplifying disjunction of 10521 conjuctions. This might take some time... Received shutdown request... [2018-06-25 12:23:05,597 INFO ]: Timeout while computing interpolants [2018-06-25 12:23:05,798 WARN ]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 12:23:05,798 WARN ]: Verification canceled [2018-06-25 12:23:05,803 WARN ]: Timeout [2018-06-25 12:23:05,803 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 12:23:05 BoogieIcfgContainer [2018-06-25 12:23:05,803 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 12:23:05,804 INFO ]: Toolchain (without parser) took 58160.76 ms. Allocated memory was 296.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 223.2 MB in the beginning and 474.3 MB in the end (delta: -251.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 12:23:05,805 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 296.7 MB. Free memory is still 262.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 12:23:05,805 INFO ]: ChcToBoogie took 66.51 ms. Allocated memory is still 296.7 MB. Free memory was 223.2 MB in the beginning and 220.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 12:23:05,806 INFO ]: Boogie Preprocessor took 62.97 ms. Allocated memory is still 296.7 MB. Free memory was 220.2 MB in the beginning and 218.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 12:23:05,806 INFO ]: RCFGBuilder took 546.76 ms. Allocated memory was 296.7 MB in the beginning and 324.0 MB in the end (delta: 27.3 MB). Free memory was 218.2 MB in the beginning and 291.4 MB in the end (delta: -73.2 MB). Peak memory consumption was 47.8 MB. Max. memory is 3.6 GB. [2018-06-25 12:23:05,806 INFO ]: TraceAbstraction took 57475.87 ms. Allocated memory was 324.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 291.4 MB in the beginning and 474.3 MB in the end (delta: -182.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 12:23:05,809 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 296.7 MB. Free memory is still 262.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 66.51 ms. Allocated memory is still 296.7 MB. Free memory was 223.2 MB in the beginning and 220.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 62.97 ms. Allocated memory is still 296.7 MB. Free memory was 220.2 MB in the beginning and 218.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 546.76 ms. Allocated memory was 296.7 MB in the beginning and 324.0 MB in the end (delta: 27.3 MB). Free memory was 218.2 MB in the beginning and 291.4 MB in the end (delta: -73.2 MB). Peak memory consumption was 47.8 MB. Max. memory is 3.6 GB. * TraceAbstraction took 57475.87 ms. Allocated memory was 324.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 291.4 MB in the beginning and 474.3 MB in the end (delta: -182.9 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 15 with TraceHistMax 7, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 10521 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 57.4s OverallTime, 6 OverallIterations, 7 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 3 SDslu, 89 SDs, 0 SdLazy, 43 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 25.4s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 4296 SizeOfPredicates, 16 NumberOfNonLiveVariables, 2090 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 0/50 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/simple_array_inversion-5.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_12-23-05-826.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_array_inversion-5.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_12-23-05-826.csv Completed graceful shutdown