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_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq-len.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 15:33:07,253 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 15:33:07,255 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 15:33:07,269 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 15:33:07,270 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 15:33:07,271 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 15:33:07,274 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 15:33:07,276 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 15:33:07,277 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 15:33:07,278 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 15:33:07,280 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 15:33:07,280 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 15:33:07,281 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 15:33:07,282 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 15:33:07,282 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 15:33:07,285 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 15:33:07,286 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 15:33:07,296 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 15:33:07,297 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 15:33:07,298 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 15:33:07,299 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 15:33:07,301 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 15:33:07,305 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 15:33:07,305 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 15:33:07,306 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 15:33:07,307 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 15:33:07,307 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 15:33:07,309 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 15:33:07,310 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 15:33:07,310 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 15:33:07,311 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 15:33:07,311 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 15:33:07,311 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 15:33:07,312 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 15:33:07,312 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 15:33:07,316 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 15:33:07,334 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 15:33:07,334 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 15:33:07,335 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 15:33:07,335 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 15:33:07,336 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 15:33:07,336 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 15:33:07,337 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 15:33:07,337 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 15:33:07,337 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 15:33:07,337 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 15:33:07,338 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:33:07,338 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 15:33:07,338 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 15:33:07,338 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 15:33:07,338 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 15:33:07,338 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 15:33:07,339 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 15:33:07,339 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 15:33:07,340 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 15:33:07,341 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 15:33:07,341 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 15:33:07,385 INFO ]: Repository-Root is: /tmp [2018-06-22 15:33:07,400 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 15:33:07,405 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 15:33:07,407 INFO ]: Initializing SmtParser... [2018-06-22 15:33:07,407 INFO ]: SmtParser initialized [2018-06-22 15:33:07,408 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq-len.c.smt2 [2018-06-22 15:33:07,409 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 15:33:07,493 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq-len.c.smt2 unknown [2018-06-22 15:33:07,854 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq-len.c.smt2 [2018-06-22 15:33:07,859 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 15:33:07,865 INFO ]: Walking toolchain with 4 elements. [2018-06-22 15:33:07,865 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 15:33:07,865 INFO ]: Initializing ChcToBoogie... [2018-06-22 15:33:07,865 INFO ]: ChcToBoogie initialized [2018-06-22 15:33:07,868 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:33:07" (1/1) ... [2018-06-22 15:33:07,916 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:33:07 Unit [2018-06-22 15:33:07,916 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 15:33:07,916 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 15:33:07,916 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 15:33:07,916 INFO ]: Boogie Preprocessor initialized [2018-06-22 15:33:07,939 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:33:07" (1/1) ... [2018-06-22 15:33:07,939 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:33:07" (1/1) ... [2018-06-22 15:33:07,959 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:33:07" (1/1) ... [2018-06-22 15:33:07,959 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:33:07" (1/1) ... [2018-06-22 15:33:07,964 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:33:07" (1/1) ... [2018-06-22 15:33:07,965 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:33:07" (1/1) ... [2018-06-22 15:33:07,967 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:33:07" (1/1) ... [2018-06-22 15:33:07,978 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 15:33:07,979 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 15:33:07,979 INFO ]: Initializing RCFGBuilder... [2018-06-22 15:33:07,979 INFO ]: RCFGBuilder initialized [2018-06-22 15:33:07,980 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:33:07" (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) [2018-06-22 15:33:08,001 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 15:33:08,001 INFO ]: Found specification of procedure False [2018-06-22 15:33:08,001 INFO ]: Found implementation of procedure False [2018-06-22 15:33:08,001 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 15:33:08,001 INFO ]: Found specification of procedure state [2018-06-22 15:33:08,001 INFO ]: Found implementation of procedure state [2018-06-22 15:33:08,001 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 15:33:08,001 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 15:33:08,001 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 15:33:08,318 INFO ]: Using library mode [2018-06-22 15:33:08,318 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:33:08 BoogieIcfgContainer [2018-06-22 15:33:08,318 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 15:33:08,319 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 15:33:08,319 INFO ]: Initializing TraceAbstraction... [2018-06-22 15:33:08,322 INFO ]: TraceAbstraction initialized [2018-06-22 15:33:08,323 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:33:07" (1/3) ... [2018-06-22 15:33:08,330 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e281fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 03:33:08, skipping insertion in model container [2018-06-22 15:33:08,330 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:33:07" (2/3) ... [2018-06-22 15:33:08,330 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e281fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 03:33:08, skipping insertion in model container [2018-06-22 15:33:08,330 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:33:08" (3/3) ... [2018-06-22 15:33:08,332 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 15:33:08,343 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 15:33:08,360 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 15:33:08,406 INFO ]: Using default assertion order modulation [2018-06-22 15:33:08,406 INFO ]: Interprodecural is true [2018-06-22 15:33:08,406 INFO ]: Hoare is false [2018-06-22 15:33:08,406 INFO ]: Compute interpolants for FPandBP [2018-06-22 15:33:08,406 INFO ]: Backedges is TWOTRACK [2018-06-22 15:33:08,406 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 15:33:08,407 INFO ]: Difference is false [2018-06-22 15:33:08,407 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 15:33:08,407 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 15:33:08,420 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 15:33:08,429 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 15:33:08,429 INFO ]: Found error trace [2018-06-22 15:33:08,430 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:33:08,430 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:33:08,433 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 15:33:08,435 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:33:08,435 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:33:08,467 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:33:08,467 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:33:08,467 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:33:08,495 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:33:08,604 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 15:33:08,609 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 15:33:08,609 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 15:33:08,611 INFO ]: Interpolant automaton has 4 states [2018-06-22 15:33:08,624 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 15:33:08,624 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:33:08,626 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 15:33:08,749 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:33:08,749 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 15:33:08,750 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 15:33:08,750 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 15:33:08,751 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:33:08,761 INFO ]: With dead ends: 13 [2018-06-22 15:33:08,761 INFO ]: Without dead ends: 13 [2018-06-22 15:33:08,762 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:33:08,774 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 15:33:08,793 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 15:33:08,793 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 15:33:08,794 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 15:33:08,795 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 15:33:08,795 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:33:08,795 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 15:33:08,795 INFO ]: Interpolant automaton has 4 states. [2018-06-22 15:33:08,795 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 15:33:08,797 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 15:33:08,797 INFO ]: Found error trace [2018-06-22 15:33:08,797 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:33:08,797 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:33:08,797 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 15:33:08,797 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:33:08,797 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:33:08,798 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:33:08,798 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:33:08,798 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:33:08,877 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:33:09,128 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:33:09,128 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:33:09,128 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:33:09,136 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:33:09,192 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:33:09,202 INFO ]: Computing forward predicates... [2018-06-22 15:33:09,698 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:33:09,730 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:33:09,730 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 15:33:09,731 INFO ]: Interpolant automaton has 9 states [2018-06-22 15:33:09,731 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 15:33:09,731 INFO ]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-06-22 15:33:09,732 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 15:33:10,130 WARN ]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 15:33:10,244 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:33:10,245 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 15:33:10,245 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 15:33:10,245 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 15:33:10,245 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:33:10,246 INFO ]: With dead ends: 15 [2018-06-22 15:33:10,246 INFO ]: Without dead ends: 15 [2018-06-22 15:33:10,247 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-06-22 15:33:10,247 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 15:33:10,249 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 15:33:10,249 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 15:33:10,252 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 15:33:10,252 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 15:33:10,252 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:33:10,252 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 15:33:10,252 INFO ]: Interpolant automaton has 9 states. [2018-06-22 15:33:10,252 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 15:33:10,252 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 15:33:10,252 INFO ]: Found error trace [2018-06-22 15:33:10,252 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:33:10,253 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:33:10,253 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 15:33:10,253 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:33:10,253 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:33:10,254 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:33:10,254 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:33:10,254 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:33:10,313 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:33:10,812 WARN ]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 15:33:10,927 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:33:10,927 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:33:10,927 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 15:33:10,936 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:33:11,013 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:33:11,013 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:33:11,017 INFO ]: Computing forward predicates... [2018-06-22 15:33:11,176 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:33:11,197 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:33:11,197 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-22 15:33:11,197 INFO ]: Interpolant automaton has 11 states [2018-06-22 15:33:11,197 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 15:33:11,197 INFO ]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-06-22 15:33:11,198 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2018-06-22 15:33:11,343 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:33:11,343 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 15:33:11,343 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 15:33:11,343 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-22 15:33:11,343 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:33:11,344 INFO ]: With dead ends: 17 [2018-06-22 15:33:11,344 INFO ]: Without dead ends: 17 [2018-06-22 15:33:11,344 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-06-22 15:33:11,344 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 15:33:11,347 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 15:33:11,347 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 15:33:11,348 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 15:33:11,348 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 15:33:11,348 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:33:11,348 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 15:33:11,348 INFO ]: Interpolant automaton has 11 states. [2018-06-22 15:33:11,348 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 15:33:11,349 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 15:33:11,349 INFO ]: Found error trace [2018-06-22 15:33:11,349 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:33:11,349 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:33:11,349 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 15:33:11,349 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:33:11,349 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:33:11,350 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:33:11,350 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:33:11,350 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:33:11,394 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:33:11,759 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:33:11,759 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:33:11,759 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 15:33:11,774 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 15:33:11,842 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 15:33:11,842 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:33:11,846 INFO ]: Computing forward predicates... [2018-06-22 15:33:12,068 WARN ]: Spent 171.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2018-06-22 15:33:12,244 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:33:12,265 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:33:12,266 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2018-06-22 15:33:12,266 INFO ]: Interpolant automaton has 13 states [2018-06-22 15:33:12,266 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 15:33:12,266 INFO ]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-06-22 15:33:12,267 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 13 states. [2018-06-22 15:33:12,478 WARN ]: Spent 187.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2018-06-22 15:33:12,766 WARN ]: Spent 141.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2018-06-22 15:33:12,784 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:33:12,786 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 15:33:12,786 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 15:33:12,786 INFO ]: Start accepts. Automaton has 13 states. Word has length 21 [2018-06-22 15:33:12,786 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:33:12,786 INFO ]: With dead ends: 19 [2018-06-22 15:33:12,786 INFO ]: Without dead ends: 19 [2018-06-22 15:33:12,787 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2018-06-22 15:33:12,787 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 15:33:12,790 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 15:33:12,790 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 15:33:12,790 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 15:33:12,790 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 15:33:12,791 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:33:12,791 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 15:33:12,791 INFO ]: Interpolant automaton has 13 states. [2018-06-22 15:33:12,791 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 15:33:12,791 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 15:33:12,791 INFO ]: Found error trace [2018-06-22 15:33:12,791 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:33:12,791 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:33:12,792 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 15:33:12,792 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:33:12,792 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:33:12,792 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:33:12,792 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:33:12,792 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:33:12,842 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:33:13,195 WARN ]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-22 15:33:13,406 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 15:33:13,406 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:33:13,406 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 15:33:13,412 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 15:33:13,476 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 15:33:13,476 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:33:13,481 INFO ]: Computing forward predicates... [2018-06-22 15:33:13,877 WARN ]: Spent 144.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2018-06-22 15:33:14,146 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 15:33:14,172 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:33:14,172 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2018-06-22 15:33:14,172 INFO ]: Interpolant automaton has 16 states [2018-06-22 15:33:14,172 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 15:33:14,173 INFO ]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2018-06-22 15:33:14,173 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 16 states. [2018-06-22 15:33:14,506 WARN ]: Spent 281.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2018-06-22 15:33:14,808 WARN ]: Spent 124.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2018-06-22 15:33:14,955 WARN ]: Spent 130.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2018-06-22 15:33:14,985 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:33:14,985 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 15:33:14,985 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 15:33:14,985 INFO ]: Start accepts. Automaton has 16 states. Word has length 25 [2018-06-22 15:33:14,985 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:33:14,986 INFO ]: With dead ends: 21 [2018-06-22 15:33:14,986 INFO ]: Without dead ends: 21 [2018-06-22 15:33:14,986 INFO ]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-06-22 15:33:14,986 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 15:33:14,989 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 15:33:14,989 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 15:33:14,990 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 15:33:14,990 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 15:33:14,990 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:33:14,990 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 15:33:14,990 INFO ]: Interpolant automaton has 16 states. [2018-06-22 15:33:14,990 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 15:33:14,991 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 15:33:14,991 INFO ]: Found error trace [2018-06-22 15:33:14,991 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:33:14,991 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:33:14,991 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-22 15:33:14,991 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:33:14,991 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:33:14,992 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:33:14,992 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:33:14,992 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:33:15,059 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:33:16,016 WARN ]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-06-22 15:33:16,231 WARN ]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-06-22 15:33:16,507 WARN ]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-06-22 15:33:16,656 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 15:33:16,656 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:33:16,656 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 15:33:16,662 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 15:33:16,738 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 15:33:16,738 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:33:16,743 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 15:34:19,408 WARN ]: Removed 8 from assertion stack [2018-06-22 15:34:19,408 INFO ]: Timeout while computing interpolants [2018-06-22 15:34:19,609 WARN ]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:34:19,609 WARN ]: Verification canceled [2018-06-22 15:34:19,612 WARN ]: Timeout [2018-06-22 15:34:19,612 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 03:34:19 BoogieIcfgContainer [2018-06-22 15:34:19,612 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 15:34:19,613 INFO ]: Toolchain (without parser) took 71754.14 ms. Allocated memory was 308.3 MB in the beginning and 1.1 GB in the end (delta: 762.8 MB). Free memory was 256.7 MB in the beginning and 278.1 MB in the end (delta: -21.4 MB). Peak memory consumption was 843.1 MB. Max. memory is 3.6 GB. [2018-06-22 15:34:19,614 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:34:19,614 INFO ]: ChcToBoogie took 50.82 ms. Allocated memory is still 308.3 MB. Free memory was 256.7 MB in the beginning and 254.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:34:19,615 INFO ]: Boogie Preprocessor took 61.92 ms. Allocated memory is still 308.3 MB. Free memory was 254.7 MB in the beginning and 252.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:34:19,615 INFO ]: RCFGBuilder took 339.60 ms. Allocated memory is still 308.3 MB. Free memory was 252.7 MB in the beginning and 241.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 3.6 GB. [2018-06-22 15:34:19,616 INFO ]: TraceAbstraction took 71293.01 ms. Allocated memory was 308.3 MB in the beginning and 1.1 GB in the end (delta: 762.8 MB). Free memory was 240.5 MB in the beginning and 278.1 MB in the end (delta: -37.7 MB). Peak memory consumption was 826.9 MB. Max. memory is 3.6 GB. [2018-06-22 15:34:19,619 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 50.82 ms. Allocated memory is still 308.3 MB. Free memory was 256.7 MB in the beginning and 254.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 61.92 ms. Allocated memory is still 308.3 MB. Free memory was 254.7 MB in the beginning and 252.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 339.60 ms. Allocated memory is still 308.3 MB. Free memory was 252.7 MB in the beginning and 241.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 71293.01 ms. Allocated memory was 308.3 MB in the beginning and 1.1 GB in the end (delta: 762.8 MB). Free memory was 240.5 MB in the beginning and 278.1 MB in the end (delta: -37.7 MB). Peak memory consumption was 826.9 MB. 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 30 with TraceHistMax 6, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 5160. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 71.2s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 58 SDtfs, 67 SDslu, 217 SDs, 0 SdLazy, 172 SolverSat, 92 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 3.6s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 25784 SizeOfPredicates, 176 NumberOfNonLiveVariables, 780 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 40/140 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_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_15-34-19-632.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/seq-len.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_15-34-19-632.csv Completed graceful shutdown