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/ctigar/seq-len.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 13:30:58,889 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 13:30:58,891 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 13:30:58,904 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 13:30:58,904 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 13:30:58,905 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 13:30:58,906 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 13:30:58,908 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 13:30:58,909 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 13:30:58,911 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 13:30:58,912 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 13:30:58,912 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 13:30:58,913 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 13:30:58,917 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 13:30:58,918 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 13:30:58,918 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 13:30:58,931 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 13:30:58,933 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 13:30:58,934 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 13:30:58,935 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 13:30:58,936 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 13:30:58,938 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 13:30:58,938 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 13:30:58,939 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 13:30:58,939 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 13:30:58,941 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 13:30:58,942 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 13:30:58,943 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 13:30:58,944 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 13:30:58,944 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 13:30:58,944 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 13:30:58,945 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 13:30:58,945 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 13:30:58,946 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 13:30:58,947 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 13:30:58,947 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 13:30:58,961 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 13:30:58,961 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 13:30:58,961 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 13:30:58,961 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 13:30:58,962 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 13:30:58,962 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 13:30:58,963 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 13:30:58,963 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 13:30:58,963 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 13:30:58,963 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 13:30:58,964 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 13:30:58,964 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 13:30:58,964 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 13:30:58,964 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 13:30:58,964 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 13:30:58,964 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 13:30:58,965 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 13:30:58,965 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 13:30:58,965 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 13:30:58,965 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 13:30:58,965 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 13:30:58,967 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 13:30:58,968 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 13:30:59,016 INFO ]: Repository-Root is: /tmp [2018-06-25 13:30:59,031 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 13:30:59,037 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 13:30:59,038 INFO ]: Initializing SmtParser... [2018-06-25 13:30:59,039 INFO ]: SmtParser initialized [2018-06-25 13:30:59,039 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq-len.c.smt2 [2018-06-25 13:30:59,040 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 13:30:59,139 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq-len.c.smt2 unknown [2018-06-25 13:30:59,543 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq-len.c.smt2 [2018-06-25 13:30:59,548 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 13:30:59,554 INFO ]: Walking toolchain with 4 elements. [2018-06-25 13:30:59,554 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 13:30:59,554 INFO ]: Initializing ChcToBoogie... [2018-06-25 13:30:59,555 INFO ]: ChcToBoogie initialized [2018-06-25 13:30:59,558 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 01:30:59" (1/1) ... [2018-06-25 13:30:59,618 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:30:59 Unit [2018-06-25 13:30:59,618 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 13:30:59,619 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 13:30:59,619 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 13:30:59,619 INFO ]: Boogie Preprocessor initialized [2018-06-25 13:30:59,639 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:30:59" (1/1) ... [2018-06-25 13:30:59,639 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:30:59" (1/1) ... [2018-06-25 13:30:59,647 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:30:59" (1/1) ... [2018-06-25 13:30:59,647 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:30:59" (1/1) ... [2018-06-25 13:30:59,660 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:30:59" (1/1) ... [2018-06-25 13:30:59,662 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:30:59" (1/1) ... [2018-06-25 13:30:59,664 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:30:59" (1/1) ... [2018-06-25 13:30:59,666 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 13:30:59,667 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 13:30:59,667 INFO ]: Initializing RCFGBuilder... [2018-06-25 13:30:59,667 INFO ]: RCFGBuilder initialized [2018-06-25 13:30:59,668 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:30:59" (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 13:30:59,687 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 13:30:59,687 INFO ]: Found specification of procedure gotoProc [2018-06-25 13:30:59,687 INFO ]: Found implementation of procedure gotoProc [2018-06-25 13:30:59,687 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 13:30:59,687 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 13:30:59,687 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 13:30:59,939 INFO ]: Using library mode [2018-06-25 13:30:59,944 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 01:30:59 BoogieIcfgContainer [2018-06-25 13:30:59,944 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 13:30:59,946 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 13:30:59,946 INFO ]: Initializing TraceAbstraction... [2018-06-25 13:30:59,948 INFO ]: TraceAbstraction initialized [2018-06-25 13:30:59,948 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 01:30:59" (1/3) ... [2018-06-25 13:30:59,950 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559abd67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 01:30:59, skipping insertion in model container [2018-06-25 13:30:59,951 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:30:59" (2/3) ... [2018-06-25 13:30:59,951 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559abd67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 01:30:59, skipping insertion in model container [2018-06-25 13:30:59,951 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 01:30:59" (3/3) ... [2018-06-25 13:30:59,953 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 13:30:59,961 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 13:30:59,969 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 13:31:00,021 INFO ]: Using default assertion order modulation [2018-06-25 13:31:00,021 INFO ]: Interprodecural is true [2018-06-25 13:31:00,021 INFO ]: Hoare is false [2018-06-25 13:31:00,021 INFO ]: Compute interpolants for FPandBP [2018-06-25 13:31:00,021 INFO ]: Backedges is TWOTRACK [2018-06-25 13:31:00,021 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 13:31:00,022 INFO ]: Difference is false [2018-06-25 13:31:00,022 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 13:31:00,022 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 13:31:00,038 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 13:31:00,051 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 13:31:00,051 INFO ]: Found error trace [2018-06-25 13:31:00,052 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 13:31:00,052 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 13:31:00,059 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-25 13:31:00,062 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 13:31:00,062 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 13:31:00,109 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 13:31:00,109 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 13:31:00,109 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 13:31:00,147 INFO ]: Conjunction of SSA is unsat [2018-06-25 13:31:00,233 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 13:31:00,235 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 13:31:00,235 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 13:31:00,236 INFO ]: Interpolant automaton has 3 states [2018-06-25 13:31:00,246 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 13:31:00,246 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 13:31:00,248 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 13:31:00,313 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 13:31:00,314 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 13:31:00,314 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 13:31:00,315 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 13:31:00,315 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 13:31:00,323 INFO ]: With dead ends: 9 [2018-06-25 13:31:00,323 INFO ]: Without dead ends: 9 [2018-06-25 13:31:00,327 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 13:31:00,342 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 13:31:00,369 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 13:31:00,370 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 13:31:00,371 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 13:31:00,372 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 13:31:00,372 INFO ]: Finished accepts. word is rejected. [2018-06-25 13:31:00,372 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 13:31:00,372 INFO ]: Interpolant automaton has 3 states. [2018-06-25 13:31:00,372 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 13:31:00,372 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 13:31:00,372 INFO ]: Found error trace [2018-06-25 13:31:00,372 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 13:31:00,373 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 13:31:00,373 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-25 13:31:00,373 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 13:31:00,373 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 13:31:00,374 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 13:31:00,374 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 13:31:00,374 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 13:31:00,426 INFO ]: Conjunction of SSA is unsat [2018-06-25 13:31:00,653 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 13:31:00,653 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 13:31:00,653 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 13:31:00,668 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 13:31:00,731 INFO ]: Conjunction of SSA is unsat [2018-06-25 13:31:00,741 INFO ]: Computing forward predicates... [2018-06-25 13:31:01,239 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 13:31:01,271 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 13:31:01,271 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 13:31:01,271 INFO ]: Interpolant automaton has 5 states [2018-06-25 13:31:01,271 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 13:31:01,271 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-25 13:31:01,272 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 13:31:01,529 WARN ]: Spent 241.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-06-25 13:31:01,556 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 13:31:01,556 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 13:31:01,556 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 13:31:01,556 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 13:31:01,556 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 13:31:01,557 INFO ]: With dead ends: 10 [2018-06-25 13:31:01,557 INFO ]: Without dead ends: 10 [2018-06-25 13:31:01,558 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-25 13:31:01,558 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 13:31:01,559 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 13:31:01,559 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 13:31:01,559 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 13:31:01,559 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 13:31:01,559 INFO ]: Finished accepts. word is rejected. [2018-06-25 13:31:01,559 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 13:31:01,559 INFO ]: Interpolant automaton has 5 states. [2018-06-25 13:31:01,559 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 13:31:01,560 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 13:31:01,560 INFO ]: Found error trace [2018-06-25 13:31:01,560 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 13:31:01,560 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 13:31:01,560 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-25 13:31:01,560 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 13:31:01,560 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 13:31:01,561 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 13:31:01,561 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 13:31:01,561 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 13:31:01,638 INFO ]: Conjunction of SSA is unsat [2018-06-25 13:31:01,942 WARN ]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 13:31:02,110 WARN ]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 13:31:02,111 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 13:31:02,111 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 13:31:02,111 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 [2018-06-25 13:31:02,117 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 13:31:02,186 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 13:31:02,186 INFO ]: Conjunction of SSA is unsat [2018-06-25 13:31:02,190 INFO ]: Computing forward predicates... [2018-06-25 13:31:03,672 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 13:31:03,692 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 13:31:03,692 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-25 13:31:03,692 INFO ]: Interpolant automaton has 6 states [2018-06-25 13:31:03,692 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 13:31:03,693 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-25 13:31:03,693 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-06-25 13:31:03,742 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 13:31:03,742 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 13:31:03,743 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-25 13:31:03,743 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-25 13:31:03,743 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 13:31:03,743 INFO ]: With dead ends: 11 [2018-06-25 13:31:03,743 INFO ]: Without dead ends: 11 [2018-06-25 13:31:03,743 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-06-25 13:31:03,743 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 13:31:03,744 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 13:31:03,744 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 13:31:03,745 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 13:31:03,745 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-25 13:31:03,745 INFO ]: Finished accepts. word is rejected. [2018-06-25 13:31:03,745 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 13:31:03,745 INFO ]: Interpolant automaton has 6 states. [2018-06-25 13:31:03,745 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 13:31:03,745 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 13:31:03,745 INFO ]: Found error trace [2018-06-25 13:31:03,745 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 13:31:03,746 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 13:31:03,746 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 3 times [2018-06-25 13:31:03,746 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 13:31:03,746 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 13:31:03,746 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 13:31:03,746 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 13:31:03,746 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 13:31:03,787 INFO ]: Conjunction of SSA is unsat [2018-06-25 13:31:03,934 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 13:31:03,934 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 13:31:03,956 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 13:31:03,962 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 13:31:04,054 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 13:31:04,054 INFO ]: Conjunction of SSA is unsat [2018-06-25 13:31:04,058 INFO ]: Computing forward predicates... [2018-06-25 13:31:06,045 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 13:31:06,066 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 13:31:06,166 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 13:31:10,939 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 13:31:10,976 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 13:31:10,976 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-25 13:31:10,976 INFO ]: Interpolant automaton has 7 states [2018-06-25 13:31:10,976 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-25 13:31:10,976 INFO ]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-06-25 13:31:10,977 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-06-25 13:31:11,553 WARN ]: Spent 513.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-06-25 13:31:11,870 WARN ]: Spent 211.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2018-06-25 13:31:11,924 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 13:31:11,924 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-25 13:31:11,924 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 13:31:11,924 INFO ]: Start accepts. Automaton has 7 states. Word has length 10 [2018-06-25 13:31:11,924 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 13:31:11,924 INFO ]: With dead ends: 12 [2018-06-25 13:31:11,924 INFO ]: Without dead ends: 12 [2018-06-25 13:31:11,925 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-06-25 13:31:11,925 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-25 13:31:11,926 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-25 13:31:11,926 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-25 13:31:11,926 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-25 13:31:11,926 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-25 13:31:11,927 INFO ]: Finished accepts. word is rejected. [2018-06-25 13:31:11,927 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-25 13:31:11,927 INFO ]: Interpolant automaton has 7 states. [2018-06-25 13:31:11,927 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-25 13:31:11,927 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-25 13:31:11,927 INFO ]: Found error trace [2018-06-25 13:31:11,927 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 13:31:11,927 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 13:31:11,927 INFO ]: Analyzing trace with hash -1433955954, now seen corresponding path program 4 times [2018-06-25 13:31:11,927 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 13:31:11,927 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 13:31:11,928 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 13:31:11,928 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 13:31:11,928 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 13:31:11,988 INFO ]: Conjunction of SSA is unsat [2018-06-25 13:31:12,778 WARN ]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-25 13:31:13,050 WARN ]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-25 13:31:13,072 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 13:31:13,072 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 13:31:13,072 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 13:31:13,078 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-25 13:31:13,136 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-25 13:31:13,136 INFO ]: Conjunction of SSA is unsat [2018-06-25 13:31:13,139 INFO ]: Computing forward predicates... [2018-06-25 13:31:15,372 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 13:31:19,089 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 13:31:19,110 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 13:31:19,110 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-06-25 13:31:19,110 INFO ]: Interpolant automaton has 8 states [2018-06-25 13:31:19,110 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 13:31:19,110 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-25 13:31:19,110 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 8 states. [2018-06-25 13:31:19,323 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 13:31:19,323 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-25 13:31:19,323 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-25 13:31:19,323 INFO ]: Start accepts. Automaton has 8 states. Word has length 11 [2018-06-25 13:31:19,323 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 13:31:19,323 INFO ]: With dead ends: 13 [2018-06-25 13:31:19,323 INFO ]: Without dead ends: 13 [2018-06-25 13:31:19,324 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2018-06-25 13:31:19,324 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-25 13:31:19,325 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-25 13:31:19,325 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-25 13:31:19,325 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-25 13:31:19,326 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-25 13:31:19,326 INFO ]: Finished accepts. word is rejected. [2018-06-25 13:31:19,326 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-25 13:31:19,326 INFO ]: Interpolant automaton has 8 states. [2018-06-25 13:31:19,326 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-25 13:31:19,326 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-25 13:31:19,326 INFO ]: Found error trace [2018-06-25 13:31:19,326 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 13:31:19,326 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 13:31:19,326 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 5 times [2018-06-25 13:31:19,326 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 13:31:19,326 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 13:31:19,327 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 13:31:19,327 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 13:31:19,327 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 13:31:19,396 INFO ]: Conjunction of SSA is unsat [2018-06-25 13:31:19,873 WARN ]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-06-25 13:31:19,963 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 13:31:19,963 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 13:31:19,963 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 13:31:19,971 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-25 13:31:20,054 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-25 13:31:20,054 INFO ]: Conjunction of SSA is unsat [2018-06-25 13:31:20,059 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-25 13:32:07,428 INFO ]: Timeout while computing interpolants [2018-06-25 13:32:07,629 WARN ]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 13:32:07,629 WARN ]: Verification canceled [2018-06-25 13:32:07,632 WARN ]: Timeout [2018-06-25 13:32:07,632 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 01:32:07 BoogieIcfgContainer [2018-06-25 13:32:07,632 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 13:32:07,633 INFO ]: Toolchain (without parser) took 68083.75 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 257.7 MB in the beginning and 961.4 MB in the end (delta: -703.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 13:32:07,635 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 13:32:07,635 INFO ]: ChcToBoogie took 64.21 ms. Allocated memory is still 309.3 MB. Free memory was 257.7 MB in the beginning and 255.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 13:32:07,636 INFO ]: Boogie Preprocessor took 47.37 ms. Allocated memory is still 309.3 MB. Free memory was 255.8 MB in the beginning and 253.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 13:32:07,636 INFO ]: RCFGBuilder took 277.35 ms. Allocated memory is still 309.3 MB. Free memory was 253.8 MB in the beginning and 239.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. [2018-06-25 13:32:07,637 INFO ]: TraceAbstraction took 67686.79 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 239.8 MB in the beginning and 961.4 MB in the end (delta: -721.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 13:32:07,639 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 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 64.21 ms. Allocated memory is still 309.3 MB. Free memory was 257.7 MB in the beginning and 255.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 47.37 ms. Allocated memory is still 309.3 MB. Free memory was 255.8 MB in the beginning and 253.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 277.35 ms. Allocated memory is still 309.3 MB. Free memory was 253.8 MB in the beginning and 239.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 67686.79 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 239.8 MB in the beginning and 961.4 MB in the end (delta: -721.6 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 13 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 22 quantified variables from 22 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 67.6s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 8 SDslu, 74 SDs, 0 SdLazy, 30 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 30 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 16.8s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 2687 SizeOfPredicates, 24 NumberOfNonLiveVariables, 800 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 0/40 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/seq-len.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_13-32-07-650.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/seq-len.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_13-32-07-650.csv Completed graceful shutdown