java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.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/efm.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 00:55:47,231 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 00:55:47,237 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 00:55:47,250 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 00:55:47,250 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 00:55:47,251 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 00:55:47,252 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 00:55:47,256 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 00:55:47,258 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 00:55:47,258 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 00:55:47,260 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 00:55:47,261 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 00:55:47,261 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 00:55:47,262 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 00:55:47,264 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 00:55:47,265 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 00:55:47,267 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 00:55:47,276 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 00:55:47,277 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 00:55:47,278 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 00:55:47,279 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 00:55:47,284 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-25 00:55:47,289 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 00:55:47,290 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 00:55:47,291 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 00:55:47,296 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 00:55:47,297 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 00:55:47,298 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 00:55:47,298 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 00:55:47,321 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 00:55:47,325 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 00:55:47,326 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 00:55:47,326 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 00:55:47,327 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 00:55:47,327 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 00:55:47,327 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 00:55:47,327 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 00:55:47,328 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 00:55:47,328 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 00:55:47,328 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 00:55:47,328 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 00:55:47,328 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 00:55:47,328 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 00:55:47,329 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 00:55:47,331 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 00:55:47,331 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 00:55:47,331 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 00:55:47,332 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 00:55:47,332 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 00:55:47,332 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 00:55:47,333 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 00:55:47,333 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 00:55:47,380 INFO ]: Repository-Root is: /tmp [2018-06-25 00:55:47,395 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 00:55:47,399 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 00:55:47,400 INFO ]: Initializing SmtParser... [2018-06-25 00:55:47,401 INFO ]: SmtParser initialized [2018-06-25 00:55:47,401 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/efm.c.smt2 [2018-06-25 00:55:47,402 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 00:55:47,494 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/efm.c.smt2 unknown [2018-06-25 00:55:47,952 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/efm.c.smt2 [2018-06-25 00:55:47,958 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 00:55:47,964 INFO ]: Walking toolchain with 5 elements. [2018-06-25 00:55:47,965 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 00:55:47,965 INFO ]: Initializing ChcToBoogie... [2018-06-25 00:55:47,965 INFO ]: ChcToBoogie initialized [2018-06-25 00:55:47,968 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:55:47" (1/1) ... [2018-06-25 00:55:48,040 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:55:48 Unit [2018-06-25 00:55:48,040 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 00:55:48,043 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 00:55:48,043 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 00:55:48,043 INFO ]: Boogie Preprocessor initialized [2018-06-25 00:55:48,063 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:55:48" (1/1) ... [2018-06-25 00:55:48,063 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:55:48" (1/1) ... [2018-06-25 00:55:48,084 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:55:48" (1/1) ... [2018-06-25 00:55:48,084 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:55:48" (1/1) ... [2018-06-25 00:55:48,104 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:55:48" (1/1) ... [2018-06-25 00:55:48,105 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:55:48" (1/1) ... [2018-06-25 00:55:48,109 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:55:48" (1/1) ... [2018-06-25 00:55:48,113 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 00:55:48,113 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 00:55:48,113 INFO ]: Initializing RCFGBuilder... [2018-06-25 00:55:48,113 INFO ]: RCFGBuilder initialized [2018-06-25 00:55:48,114 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:55:48" (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 00:55:48,139 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 00:55:48,139 INFO ]: Found specification of procedure gotoProc [2018-06-25 00:55:48,139 INFO ]: Found implementation of procedure gotoProc [2018-06-25 00:55:48,139 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 00:55:48,139 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 00:55:48,139 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 00:55:48,465 INFO ]: Using library mode [2018-06-25 00:55:48,465 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:55:48 BoogieIcfgContainer [2018-06-25 00:55:48,465 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 00:55:48,466 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-25 00:55:48,466 INFO ]: Initializing BlockEncodingV2... [2018-06-25 00:55:48,477 INFO ]: BlockEncodingV2 initialized [2018-06-25 00:55:48,478 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:55:48" (1/1) ... [2018-06-25 00:55:48,505 INFO ]: Initial Icfg 10 locations, 10 edges [2018-06-25 00:55:48,506 INFO ]: Using Remove infeasible edges [2018-06-25 00:55:48,508 INFO ]: Using Maximize final states [2018-06-25 00:55:48,508 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-25 00:55:48,508 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-25 00:55:48,510 INFO ]: Using Remove sink states [2018-06-25 00:55:48,514 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-25 00:55:48,514 INFO ]: Using Use SBE [2018-06-25 00:55:48,521 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 00:55:48,809 WARN ]: aborting because of expected exponential blowup for input size 122 [2018-06-25 00:55:48,822 WARN ]: aborting because of expected exponential blowup for input size 122 [2018-06-25 00:55:48,822 INFO ]: SBE split 1 edges [2018-06-25 00:55:48,831 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-25 00:55:48,833 INFO ]: 0 new accepting states [2018-06-25 00:55:49,039 INFO ]: Removed 13 edges and 2 locations by large block encoding [2018-06-25 00:55:49,041 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-25 00:55:49,043 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-25 00:55:49,043 INFO ]: 0 new accepting states [2018-06-25 00:55:49,043 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-25 00:55:49,043 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-25 00:55:49,043 INFO ]: Encoded RCFG 6 locations, 15 edges [2018-06-25 00:55:49,044 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 25.06 12:55:49 BasicIcfg [2018-06-25 00:55:49,044 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-25 00:55:49,046 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 00:55:49,046 INFO ]: Initializing TraceAbstraction... [2018-06-25 00:55:49,051 INFO ]: TraceAbstraction initialized [2018-06-25 00:55:49,051 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:55:47" (1/4) ... [2018-06-25 00:55:49,052 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@142785bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 12:55:49, skipping insertion in model container [2018-06-25 00:55:49,052 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:55:48" (2/4) ... [2018-06-25 00:55:49,052 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@142785bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 12:55:49, skipping insertion in model container [2018-06-25 00:55:49,052 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:55:48" (3/4) ... [2018-06-25 00:55:49,052 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@142785bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 12:55:49, skipping insertion in model container [2018-06-25 00:55:49,052 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 25.06 12:55:49" (4/4) ... [2018-06-25 00:55:49,055 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-25 00:55:49,066 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 00:55:49,093 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 00:55:49,151 INFO ]: Using default assertion order modulation [2018-06-25 00:55:49,152 INFO ]: Interprodecural is true [2018-06-25 00:55:49,152 INFO ]: Hoare is false [2018-06-25 00:55:49,152 INFO ]: Compute interpolants for FPandBP [2018-06-25 00:55:49,152 INFO ]: Backedges is TWOTRACK [2018-06-25 00:55:49,152 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 00:55:49,152 INFO ]: Difference is false [2018-06-25 00:55:49,152 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 00:55:49,152 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 00:55:49,169 INFO ]: Start isEmpty. Operand 6 states. [2018-06-25 00:55:49,183 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-25 00:55:49,183 INFO ]: Found error trace [2018-06-25 00:55:49,184 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-25 00:55:49,184 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 00:55:49,190 INFO ]: Analyzing trace with hash 35718731, now seen corresponding path program 1 times [2018-06-25 00:55:49,192 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 00:55:49,193 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 00:55:49,241 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:55:49,241 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 00:55:49,241 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:55:49,288 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:55:49,385 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 00:55:49,387 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 00:55:49,388 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 00:55:49,390 INFO ]: Interpolant automaton has 3 states [2018-06-25 00:55:49,404 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 00:55:49,405 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 00:55:49,408 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-25 00:55:49,609 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 00:55:49,610 INFO ]: Finished difference Result 7 states and 16 transitions. [2018-06-25 00:55:49,610 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 00:55:49,612 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-25 00:55:49,612 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 00:55:49,622 INFO ]: With dead ends: 7 [2018-06-25 00:55:49,625 INFO ]: Without dead ends: 7 [2018-06-25 00:55:49,627 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 00:55:49,650 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-25 00:55:49,671 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-25 00:55:49,673 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-25 00:55:49,673 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 16 transitions. [2018-06-25 00:55:49,674 INFO ]: Start accepts. Automaton has 7 states and 16 transitions. Word has length 5 [2018-06-25 00:55:49,675 INFO ]: Finished accepts. word is rejected. [2018-06-25 00:55:49,675 INFO ]: Abstraction has 7 states and 16 transitions. [2018-06-25 00:55:49,675 INFO ]: Interpolant automaton has 3 states. [2018-06-25 00:55:49,675 INFO ]: Start isEmpty. Operand 7 states and 16 transitions. [2018-06-25 00:55:49,675 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-25 00:55:49,675 INFO ]: Found error trace [2018-06-25 00:55:49,675 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-25 00:55:49,676 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 00:55:49,677 INFO ]: Analyzing trace with hash 35778313, now seen corresponding path program 1 times [2018-06-25 00:55:49,677 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 00:55:49,677 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 00:55:49,677 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:55:49,677 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 00:55:49,677 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:55:49,684 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:55:49,756 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 00:55:49,757 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 00:55:49,757 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 00:55:49,758 INFO ]: Interpolant automaton has 3 states [2018-06-25 00:55:49,758 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 00:55:49,758 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 00:55:49,758 INFO ]: Start difference. First operand 7 states and 16 transitions. Second operand 3 states. [2018-06-25 00:55:49,950 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 00:55:49,950 INFO ]: Finished difference Result 8 states and 17 transitions. [2018-06-25 00:55:49,951 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 00:55:49,951 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-25 00:55:49,951 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 00:55:49,952 INFO ]: With dead ends: 8 [2018-06-25 00:55:49,952 INFO ]: Without dead ends: 8 [2018-06-25 00:55:49,953 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 00:55:49,953 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-25 00:55:49,954 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-06-25 00:55:49,954 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-25 00:55:49,954 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 16 transitions. [2018-06-25 00:55:49,954 INFO ]: Start accepts. Automaton has 7 states and 16 transitions. Word has length 5 [2018-06-25 00:55:49,954 INFO ]: Finished accepts. word is rejected. [2018-06-25 00:55:49,954 INFO ]: Abstraction has 7 states and 16 transitions. [2018-06-25 00:55:49,954 INFO ]: Interpolant automaton has 3 states. [2018-06-25 00:55:49,954 INFO ]: Start isEmpty. Operand 7 states and 16 transitions. [2018-06-25 00:55:49,955 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-25 00:55:49,955 INFO ]: Found error trace [2018-06-25 00:55:49,955 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-25 00:55:49,955 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 00:55:49,955 INFO ]: Analyzing trace with hash 1106466853, now seen corresponding path program 1 times [2018-06-25 00:55:49,955 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 00:55:49,955 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 00:55:49,957 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:55:49,957 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 00:55:49,957 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:55:50,055 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:55:50,362 WARN ]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-25 00:55:50,363 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 00:55:50,363 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 00:55:50,363 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 00:55:50,370 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 00:55:50,476 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:55:50,484 INFO ]: Computing forward predicates... [2018-06-25 00:55:52,016 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 00:55:52,050 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 00:55:52,050 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 00:55:52,050 INFO ]: Interpolant automaton has 5 states [2018-06-25 00:55:52,050 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 00:55:52,051 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 00:55:52,051 INFO ]: Start difference. First operand 7 states and 16 transitions. Second operand 5 states. [2018-06-25 00:55:52,295 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 00:55:52,295 INFO ]: Finished difference Result 11 states and 20 transitions. [2018-06-25 00:55:52,296 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 00:55:52,296 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-25 00:55:52,296 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 00:55:52,296 INFO ]: With dead ends: 11 [2018-06-25 00:55:52,296 INFO ]: Without dead ends: 11 [2018-06-25 00:55:52,297 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-06-25 00:55:52,297 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 00:55:52,298 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 8. [2018-06-25 00:55:52,298 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-25 00:55:52,299 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2018-06-25 00:55:52,299 INFO ]: Start accepts. Automaton has 8 states and 17 transitions. Word has length 6 [2018-06-25 00:55:52,299 INFO ]: Finished accepts. word is rejected. [2018-06-25 00:55:52,299 INFO ]: Abstraction has 8 states and 17 transitions. [2018-06-25 00:55:52,299 INFO ]: Interpolant automaton has 5 states. [2018-06-25 00:55:52,299 INFO ]: Start isEmpty. Operand 8 states and 17 transitions. [2018-06-25 00:55:52,299 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-25 00:55:52,299 INFO ]: Found error trace [2018-06-25 00:55:52,299 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-25 00:55:52,299 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 00:55:52,300 INFO ]: Analyzing trace with hash 1108313895, now seen corresponding path program 1 times [2018-06-25 00:55:52,300 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 00:55:52,300 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 00:55:52,300 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:55:52,301 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 00:55:52,301 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:55:52,350 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:55:52,553 WARN ]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-25 00:55:52,554 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 00:55:52,554 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 00:55:52,554 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 00:55:52,562 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 00:55:52,622 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:55:52,625 INFO ]: Computing forward predicates... [2018-06-25 00:55:54,721 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 00:55:54,740 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 00:55:54,741 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 00:55:54,741 INFO ]: Interpolant automaton has 5 states [2018-06-25 00:55:54,741 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 00:55:54,741 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 00:55:54,741 INFO ]: Start difference. First operand 8 states and 17 transitions. Second operand 5 states. [2018-06-25 00:55:54,800 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 00:55:54,800 INFO ]: Finished difference Result 11 states and 20 transitions. [2018-06-25 00:55:54,800 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 00:55:54,801 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-25 00:55:54,801 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 00:55:54,801 INFO ]: With dead ends: 11 [2018-06-25 00:55:54,801 INFO ]: Without dead ends: 11 [2018-06-25 00:55:54,801 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-25 00:55:54,801 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 00:55:54,803 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 8. [2018-06-25 00:55:54,803 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-25 00:55:54,803 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2018-06-25 00:55:54,803 INFO ]: Start accepts. Automaton has 8 states and 17 transitions. Word has length 6 [2018-06-25 00:55:54,803 INFO ]: Finished accepts. word is rejected. [2018-06-25 00:55:54,803 INFO ]: Abstraction has 8 states and 17 transitions. [2018-06-25 00:55:54,803 INFO ]: Interpolant automaton has 5 states. [2018-06-25 00:55:54,803 INFO ]: Start isEmpty. Operand 8 states and 17 transitions. [2018-06-25 00:55:54,803 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 00:55:54,803 INFO ]: Found error trace [2018-06-25 00:55:54,803 INFO ]: trace histogram [2, 1, 1, 1, 1, 1] [2018-06-25 00:55:54,804 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 00:55:54,804 INFO ]: Analyzing trace with hash -60079733, now seen corresponding path program 2 times [2018-06-25 00:55:54,804 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 00:55:54,804 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 00:55:54,804 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:55:54,804 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 00:55:54,804 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:55:54,865 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:55:55,055 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 00:55:55,055 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 00:55:55,055 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 00:55:55,061 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 00:55:55,134 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 00:55:55,134 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:55:55,137 INFO ]: Computing forward predicates... [2018-06-25 00:55:56,564 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 00:56:09,085 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 00:56:09,111 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 00:56:09,164 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 00:56:32,531 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 00:56:32,551 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 00:56:32,551 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-25 00:56:32,551 INFO ]: Interpolant automaton has 6 states [2018-06-25 00:56:32,551 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 00:56:32,551 INFO ]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-25 00:56:32,552 INFO ]: Start difference. First operand 8 states and 17 transitions. Second operand 6 states. [2018-06-25 00:56:32,670 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 00:56:32,670 INFO ]: Finished difference Result 12 states and 21 transitions. [2018-06-25 00:56:32,670 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 00:56:32,670 INFO ]: Start accepts. Automaton has 6 states. Word has length 7 [2018-06-25 00:56:32,670 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 00:56:32,671 INFO ]: With dead ends: 12 [2018-06-25 00:56:32,671 INFO ]: Without dead ends: 12 [2018-06-25 00:56:32,671 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-06-25 00:56:32,671 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-25 00:56:32,672 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 9. [2018-06-25 00:56:32,673 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 00:56:32,673 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 18 transitions. [2018-06-25 00:56:32,673 INFO ]: Start accepts. Automaton has 9 states and 18 transitions. Word has length 7 [2018-06-25 00:56:32,673 INFO ]: Finished accepts. word is rejected. [2018-06-25 00:56:32,673 INFO ]: Abstraction has 9 states and 18 transitions. [2018-06-25 00:56:32,673 INFO ]: Interpolant automaton has 6 states. [2018-06-25 00:56:32,673 INFO ]: Start isEmpty. Operand 9 states and 18 transitions. [2018-06-25 00:56:32,673 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 00:56:32,673 INFO ]: Found error trace [2018-06-25 00:56:32,673 INFO ]: trace histogram [2, 1, 1, 1, 1, 1] [2018-06-25 00:56:32,674 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 00:56:32,674 INFO ]: Analyzing trace with hash -2821431, now seen corresponding path program 2 times [2018-06-25 00:56:32,674 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 00:56:32,674 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 00:56:32,674 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:56:32,675 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 00:56:32,675 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:56:32,728 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:56:33,510 WARN ]: Spent 560.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-06-25 00:56:33,772 WARN ]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-25 00:56:33,772 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 00:56:33,772 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 00:56:33,772 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-25 00:56:33,790 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 00:56:33,885 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 00:56:33,885 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:56:33,888 INFO ]: Computing forward predicates... [2018-06-25 00:56:42,841 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 00:56:42,849 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 00:56:42,911 WARN ]: expecting exponential blowup for input size 6 Received shutdown request... [2018-06-25 00:56:53,482 INFO ]: Timeout while computing interpolants [2018-06-25 00:56:53,683 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 00:56:53,683 WARN ]: Verification canceled [2018-06-25 00:56:53,687 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-25 00:56:53,689 WARN ]: Timeout [2018-06-25 00:56:53,691 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 12:56:53 BasicIcfg [2018-06-25 00:56:53,691 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 00:56:53,692 INFO ]: Toolchain (without parser) took 65733.63 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 241.3 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 00:56:53,696 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 00:56:53,697 INFO ]: ChcToBoogie took 78.36 ms. Allocated memory is still 306.7 MB. Free memory was 240.3 MB in the beginning and 238.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 00:56:53,698 INFO ]: Boogie Preprocessor took 69.70 ms. Allocated memory is still 306.7 MB. Free memory was 238.3 MB in the beginning and 236.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 00:56:53,699 INFO ]: RCFGBuilder took 352.06 ms. Allocated memory is still 306.7 MB. Free memory was 236.3 MB in the beginning and 213.3 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 3.6 GB. [2018-06-25 00:56:53,710 INFO ]: BlockEncodingV2 took 578.58 ms. Allocated memory is still 306.7 MB. Free memory was 213.3 MB in the beginning and 190.4 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 3.6 GB. [2018-06-25 00:56:53,711 INFO ]: TraceAbstraction took 64645.00 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 189.4 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 00:56:53,725 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 10 edges - StatisticsResult: Encoded RCFG 6 locations, 15 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 78.36 ms. Allocated memory is still 306.7 MB. Free memory was 240.3 MB in the beginning and 238.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 69.70 ms. Allocated memory is still 306.7 MB. Free memory was 238.3 MB in the beginning and 236.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 352.06 ms. Allocated memory is still 306.7 MB. Free memory was 236.3 MB in the beginning and 213.3 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 578.58 ms. Allocated memory is still 306.7 MB. Free memory was 213.3 MB in the beginning and 190.4 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 3.6 GB. * TraceAbstraction took 64645.00 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 189.4 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). 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 Cancelled while BasicCegarLoop was analyzing trace of length 8 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 15072 quantified variables from 15 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. TIMEOUT Result, 64.5s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 71 SDtfs, 0 SDslu, 33 SDs, 0 SdLazy, 61 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 10 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 41.9s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 571 SizeOfPredicates, 21 NumberOfNonLiveVariables, 722 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/10 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/efm.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-25_00-56-53-757.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/efm.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-25_00-56-53-757.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/efm.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-25_00-56-53-757.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/efm.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_00-56-53-757.csv Completed graceful shutdown