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/hopv/lia/mochi/hrec.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:20:15,341 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:20:15,343 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:20:15,359 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:20:15,359 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:20:15,360 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:20:15,361 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:20:15,363 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:20:15,364 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:20:15,366 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:20:15,367 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:20:15,367 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:20:15,368 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:20:15,369 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:20:15,374 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:20:15,374 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:20:15,376 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:20:15,389 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:20:15,390 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:20:15,391 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:20:15,392 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:20:15,394 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-24 21:20:15,399 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:20:15,399 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:20:15,400 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:20:15,400 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:20:15,401 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:20:15,401 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:20:15,401 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:20:15,417 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:20:15,417 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:20:15,417 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:20:15,417 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:20:15,418 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:20:15,418 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:20:15,418 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:20:15,419 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:20:15,419 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:20:15,419 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:20:15,419 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:20:15,420 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:20:15,420 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:20:15,420 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:20:15,420 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:20:15,420 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:20:15,420 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:20:15,421 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:20:15,426 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:20:15,426 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:20:15,427 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:20:15,428 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:20:15,428 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:20:15,468 INFO ]: Repository-Root is: /tmp [2018-06-24 21:20:15,481 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:20:15,485 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:20:15,486 INFO ]: Initializing SmtParser... [2018-06-24 21:20:15,487 INFO ]: SmtParser initialized [2018-06-24 21:20:15,487 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/hrec.smt2 [2018-06-24 21:20:15,491 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 [2018-06-24 21:20:15,581 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/hrec.smt2 unknown [2018-06-24 21:20:15,717 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/hrec.smt2 [2018-06-24 21:20:15,721 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:20:15,727 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:20:15,728 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:20:15,728 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:20:15,728 INFO ]: ChcToBoogie initialized [2018-06-24 21:20:15,731 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:20:15" (1/1) ... [2018-06-24 21:20:15,779 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:15 Unit [2018-06-24 21:20:15,779 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:20:15,780 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:20:15,780 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:20:15,780 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:20:15,802 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:15" (1/1) ... [2018-06-24 21:20:15,802 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:15" (1/1) ... [2018-06-24 21:20:15,811 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:15" (1/1) ... [2018-06-24 21:20:15,811 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:15" (1/1) ... [2018-06-24 21:20:15,813 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:15" (1/1) ... [2018-06-24 21:20:15,816 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:15" (1/1) ... [2018-06-24 21:20:15,817 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:15" (1/1) ... [2018-06-24 21:20:15,818 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:20:15,819 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:20:15,819 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:20:15,820 INFO ]: RCFGBuilder initialized [2018-06-24 21:20:15,820 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:15" (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) [2018-06-24 21:20:15,841 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:20:15,841 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:20:15,841 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:20:15,841 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:20:15,841 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:20:15,841 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 [2018-06-24 21:20:16,144 INFO ]: Using library mode [2018-06-24 21:20:16,145 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:20:16 BoogieIcfgContainer [2018-06-24 21:20:16,145 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:20:16,153 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:20:16,153 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:20:16,154 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:20:16,155 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:20:16" (1/1) ... [2018-06-24 21:20:16,181 INFO ]: Initial Icfg 17 locations, 22 edges [2018-06-24 21:20:16,182 INFO ]: Using Remove infeasible edges [2018-06-24 21:20:16,183 INFO ]: Using Maximize final states [2018-06-24 21:20:16,183 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:20:16,183 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:20:16,185 INFO ]: Using Remove sink states [2018-06-24 21:20:16,186 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:20:16,186 INFO ]: Using Use SBE [2018-06-24 21:20:16,201 INFO ]: SBE split 0 edges [2018-06-24 21:20:16,216 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:20:16,218 INFO ]: 0 new accepting states [2018-06-24 21:20:16,281 INFO ]: Removed 13 edges and 5 locations by large block encoding [2018-06-24 21:20:16,284 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:20:16,285 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:20:16,285 INFO ]: 0 new accepting states [2018-06-24 21:20:16,286 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:20:16,286 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:20:16,286 INFO ]: Encoded RCFG 10 locations, 15 edges [2018-06-24 21:20:16,287 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:20:16 BasicIcfg [2018-06-24 21:20:16,287 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:20:16,288 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:20:16,288 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:20:16,291 INFO ]: TraceAbstraction initialized [2018-06-24 21:20:16,292 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:20:15" (1/4) ... [2018-06-24 21:20:16,293 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47316642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:20:16, skipping insertion in model container [2018-06-24 21:20:16,293 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:20:15" (2/4) ... [2018-06-24 21:20:16,293 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47316642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:20:16, skipping insertion in model container [2018-06-24 21:20:16,293 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:20:16" (3/4) ... [2018-06-24 21:20:16,293 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47316642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:20:16, skipping insertion in model container [2018-06-24 21:20:16,293 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:20:16" (4/4) ... [2018-06-24 21:20:16,298 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:20:16,309 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:20:16,317 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:20:16,357 INFO ]: Using default assertion order modulation [2018-06-24 21:20:16,357 INFO ]: Interprodecural is true [2018-06-24 21:20:16,357 INFO ]: Hoare is false [2018-06-24 21:20:16,357 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:20:16,357 INFO ]: Backedges is TWOTRACK [2018-06-24 21:20:16,357 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:20:16,357 INFO ]: Difference is false [2018-06-24 21:20:16,357 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:20:16,357 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:20:16,366 INFO ]: Start isEmpty. Operand 10 states. [2018-06-24 21:20:16,376 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:20:16,376 INFO ]: Found error trace [2018-06-24 21:20:16,376 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:20:16,377 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:20:16,381 INFO ]: Analyzing trace with hash 34020997, now seen corresponding path program 1 times [2018-06-24 21:20:16,383 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:20:16,384 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:20:16,417 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:16,417 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:16,417 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:16,455 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:16,509 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:20:16,510 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:20:16,510 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:20:16,512 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:20:16,522 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:20:16,522 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:20:16,524 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-24 21:20:16,659 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:20:16,659 INFO ]: Finished difference Result 17 states and 27 transitions. [2018-06-24 21:20:16,659 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:20:16,660 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:20:16,660 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:20:16,668 INFO ]: With dead ends: 17 [2018-06-24 21:20:16,668 INFO ]: Without dead ends: 17 [2018-06-24 21:20:16,670 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 [2018-06-24 21:20:16,682 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-24 21:20:16,703 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-24 21:20:16,704 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-24 21:20:16,705 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2018-06-24 21:20:16,706 INFO ]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 5 [2018-06-24 21:20:16,708 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:20:16,708 INFO ]: Abstraction has 17 states and 27 transitions. [2018-06-24 21:20:16,708 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:20:16,708 INFO ]: Start isEmpty. Operand 17 states and 27 transitions. [2018-06-24 21:20:16,710 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:20:16,710 INFO ]: Found error trace [2018-06-24 21:20:16,710 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:20:16,710 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:20:16,710 INFO ]: Analyzing trace with hash 34110370, now seen corresponding path program 1 times [2018-06-24 21:20:16,710 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:20:16,710 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:20:16,713 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:16,713 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:16,713 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:16,727 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:16,805 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:20:16,805 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:20:16,805 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:20:16,807 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:20:16,807 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:20:16,807 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:20:16,807 INFO ]: Start difference. First operand 17 states and 27 transitions. Second operand 3 states. [2018-06-24 21:20:16,871 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:20:16,871 INFO ]: Finished difference Result 23 states and 35 transitions. [2018-06-24 21:20:16,872 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:20:16,872 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:20:16,872 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:20:16,873 INFO ]: With dead ends: 23 [2018-06-24 21:20:16,873 INFO ]: Without dead ends: 23 [2018-06-24 21:20:16,874 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 [2018-06-24 21:20:16,874 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-24 21:20:16,880 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-06-24 21:20:16,880 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-24 21:20:16,883 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 29 transitions. [2018-06-24 21:20:16,883 INFO ]: Start accepts. Automaton has 19 states and 29 transitions. Word has length 5 [2018-06-24 21:20:16,883 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:20:16,883 INFO ]: Abstraction has 19 states and 29 transitions. [2018-06-24 21:20:16,883 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:20:16,883 INFO ]: Start isEmpty. Operand 19 states and 29 transitions. [2018-06-24 21:20:16,884 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-24 21:20:16,884 INFO ]: Found error trace [2018-06-24 21:20:16,884 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:20:16,884 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:20:16,884 INFO ]: Analyzing trace with hash -690896568, now seen corresponding path program 1 times [2018-06-24 21:20:16,884 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:20:16,884 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:20:16,885 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:16,885 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:16,885 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:16,912 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:17,110 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:20:17,110 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:20:17,110 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-24 21:20:17,110 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:20:17,110 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:20:17,110 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:20:17,111 INFO ]: Start difference. First operand 19 states and 29 transitions. Second operand 5 states. [2018-06-24 21:20:17,548 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:20:17,548 INFO ]: Finished difference Result 30 states and 53 transitions. [2018-06-24 21:20:17,549 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-24 21:20:17,549 INFO ]: Start accepts. Automaton has 5 states. Word has length 10 [2018-06-24 21:20:17,549 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:20:17,552 INFO ]: With dead ends: 30 [2018-06-24 21:20:17,552 INFO ]: Without dead ends: 30 [2018-06-24 21:20:17,553 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-24 21:20:17,553 INFO ]: Start minimizeSevpa. Operand 30 states. [2018-06-24 21:20:17,563 INFO ]: Finished minimizeSevpa. Reduced states from 30 to 26. [2018-06-24 21:20:17,563 INFO ]: Start removeUnreachable. Operand 26 states. [2018-06-24 21:20:17,565 INFO ]: Finished removeUnreachable. Reduced from 26 states to 26 states and 45 transitions. [2018-06-24 21:20:17,565 INFO ]: Start accepts. Automaton has 26 states and 45 transitions. Word has length 10 [2018-06-24 21:20:17,565 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:20:17,565 INFO ]: Abstraction has 26 states and 45 transitions. [2018-06-24 21:20:17,566 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:20:17,566 INFO ]: Start isEmpty. Operand 26 states and 45 transitions. [2018-06-24 21:20:17,567 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-24 21:20:17,567 INFO ]: Found error trace [2018-06-24 21:20:17,567 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:20:17,568 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:20:17,568 INFO ]: Analyzing trace with hash -1252109067, now seen corresponding path program 1 times [2018-06-24 21:20:17,568 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:20:17,568 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:20:17,568 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:17,568 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:17,568 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:17,581 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:17,646 INFO ]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:20:17,646 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:20:17,646 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 [2018-06-24 21:20:17,654 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:17,675 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:17,682 INFO ]: Computing forward predicates... [2018-06-24 21:20:17,854 INFO ]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:20:17,878 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:20:17,878 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-24 21:20:17,878 INFO ]: Interpolant automaton has 8 states [2018-06-24 21:20:17,878 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 21:20:17,878 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:20:17,879 INFO ]: Start difference. First operand 26 states and 45 transitions. Second operand 8 states. [2018-06-24 21:20:18,079 WARN ]: Spent 125.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-06-24 21:20:18,377 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:20:18,377 INFO ]: Finished difference Result 33 states and 58 transitions. [2018-06-24 21:20:18,378 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-24 21:20:18,378 INFO ]: Start accepts. Automaton has 8 states. Word has length 11 [2018-06-24 21:20:18,378 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:20:18,380 INFO ]: With dead ends: 33 [2018-06-24 21:20:18,380 INFO ]: Without dead ends: 33 [2018-06-24 21:20:18,380 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-06-24 21:20:18,380 INFO ]: Start minimizeSevpa. Operand 33 states. [2018-06-24 21:20:18,387 INFO ]: Finished minimizeSevpa. Reduced states from 33 to 28. [2018-06-24 21:20:18,387 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-24 21:20:18,389 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 49 transitions. [2018-06-24 21:20:18,389 INFO ]: Start accepts. Automaton has 28 states and 49 transitions. Word has length 11 [2018-06-24 21:20:18,389 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:20:18,389 INFO ]: Abstraction has 28 states and 49 transitions. [2018-06-24 21:20:18,389 INFO ]: Interpolant automaton has 8 states. [2018-06-24 21:20:18,389 INFO ]: Start isEmpty. Operand 28 states and 49 transitions. [2018-06-24 21:20:18,391 INFO ]: Finished isEmpty. Found accepting run of length 17 [2018-06-24 21:20:18,391 INFO ]: Found error trace [2018-06-24 21:20:18,391 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:20:18,391 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:20:18,392 INFO ]: Analyzing trace with hash -664053579, now seen corresponding path program 1 times [2018-06-24 21:20:18,392 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:20:18,392 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:20:18,392 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:18,393 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:18,393 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:18,406 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:18,531 INFO ]: Checked inductivity of 12 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:20:18,531 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:20:18,531 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-24 21:20:18,544 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:20:18,575 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:18,577 INFO ]: Computing forward predicates... [2018-06-24 21:20:19,013 INFO ]: Checked inductivity of 12 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:20:19,033 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:20:19,033 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9] total 11 [2018-06-24 21:20:19,033 INFO ]: Interpolant automaton has 11 states [2018-06-24 21:20:19,033 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-24 21:20:19,033 INFO ]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-06-24 21:20:19,033 INFO ]: Start difference. First operand 28 states and 49 transitions. Second operand 11 states. [2018-06-24 21:20:19,744 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:20:19,744 INFO ]: Finished difference Result 48 states and 109 transitions. [2018-06-24 21:20:19,744 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-24 21:20:19,745 INFO ]: Start accepts. Automaton has 11 states. Word has length 16 [2018-06-24 21:20:19,745 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:20:19,747 INFO ]: With dead ends: 48 [2018-06-24 21:20:19,747 INFO ]: Without dead ends: 48 [2018-06-24 21:20:19,747 INFO ]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2018-06-24 21:20:19,748 INFO ]: Start minimizeSevpa. Operand 48 states. [2018-06-24 21:20:19,761 INFO ]: Finished minimizeSevpa. Reduced states from 48 to 33. [2018-06-24 21:20:19,761 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-24 21:20:19,762 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 63 transitions. [2018-06-24 21:20:19,762 INFO ]: Start accepts. Automaton has 33 states and 63 transitions. Word has length 16 [2018-06-24 21:20:19,763 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:20:19,763 INFO ]: Abstraction has 33 states and 63 transitions. [2018-06-24 21:20:19,763 INFO ]: Interpolant automaton has 11 states. [2018-06-24 21:20:19,763 INFO ]: Start isEmpty. Operand 33 states and 63 transitions. [2018-06-24 21:20:19,765 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-24 21:20:19,765 INFO ]: Found error trace [2018-06-24 21:20:19,765 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-06-24 21:20:19,765 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:20:19,765 INFO ]: Analyzing trace with hash 622873444, now seen corresponding path program 1 times [2018-06-24 21:20:19,765 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:20:19,766 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:20:19,767 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:19,767 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:20:19,767 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:20:19,779 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:19,861 INFO ]: Checked inductivity of 11 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-24 21:20:19,861 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:20:19,861 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) [2018-06-24 21:20:19,875 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:20:19,896 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:20:19,898 INFO ]: Computing forward predicates... [2018-06-24 21:20:19,943 INFO ]: Checked inductivity of 11 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-24 21:20:19,963 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:20:19,963 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-24 21:20:19,963 INFO ]: Interpolant automaton has 8 states [2018-06-24 21:20:19,963 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 21:20:19,963 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:20:19,964 INFO ]: Start difference. First operand 33 states and 63 transitions. Second operand 8 states. [2018-06-24 21:20:20,337 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:20:20,337 INFO ]: Finished difference Result 23 states and 40 transitions. [2018-06-24 21:20:20,338 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-24 21:20:20,338 INFO ]: Start accepts. Automaton has 8 states. Word has length 15 [2018-06-24 21:20:20,338 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:20:20,338 INFO ]: With dead ends: 23 [2018-06-24 21:20:20,338 INFO ]: Without dead ends: 0 [2018-06-24 21:20:20,338 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-06-24 21:20:20,338 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:20:20,338 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:20:20,338 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:20:20,338 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:20:20,338 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-06-24 21:20:20,338 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:20:20,338 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:20:20,339 INFO ]: Interpolant automaton has 8 states. [2018-06-24 21:20:20,339 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:20:20,339 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:20:20,341 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:20:20,342 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:20:20 BasicIcfg [2018-06-24 21:20:20,342 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:20:20,343 INFO ]: Toolchain (without parser) took 4621.43 ms. Allocated memory was 308.8 MB in the beginning and 326.1 MB in the end (delta: 17.3 MB). Free memory was 265.2 MB in the beginning and 189.0 MB in the end (delta: 76.2 MB). Peak memory consumption was 93.5 MB. Max. memory is 3.6 GB. [2018-06-24 21:20:20,344 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:20:20,344 INFO ]: ChcToBoogie took 51.56 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 263.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:20:20,345 INFO ]: Boogie Preprocessor took 38.78 ms. Allocated memory is still 308.8 MB. Free memory was 263.2 MB in the beginning and 261.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:20:20,345 INFO ]: RCFGBuilder took 325.86 ms. Allocated memory is still 308.8 MB. Free memory was 261.2 MB in the beginning and 253.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:20:20,345 INFO ]: BlockEncodingV2 took 133.85 ms. Allocated memory is still 308.8 MB. Free memory was 253.2 MB in the beginning and 249.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:20:20,346 INFO ]: TraceAbstraction took 4054.81 ms. Allocated memory was 308.8 MB in the beginning and 326.1 MB in the end (delta: 17.3 MB). Free memory was 249.2 MB in the beginning and 189.0 MB in the end (delta: 60.2 MB). Peak memory consumption was 77.5 MB. Max. memory is 3.6 GB. [2018-06-24 21:20:20,350 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 17 locations, 22 edges - StatisticsResult: Encoded RCFG 10 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 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 51.56 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 263.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.78 ms. Allocated memory is still 308.8 MB. Free memory was 263.2 MB in the beginning and 261.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 325.86 ms. Allocated memory is still 308.8 MB. Free memory was 261.2 MB in the beginning and 253.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 133.85 ms. Allocated memory is still 308.8 MB. Free memory was 253.2 MB in the beginning and 249.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4054.81 ms. Allocated memory was 308.8 MB in the beginning and 326.1 MB in the end (delta: 17.3 MB). Free memory was 249.2 MB in the beginning and 189.0 MB in the end (delta: 60.2 MB). Peak memory consumption was 77.5 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. SAFE Result, 3.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 110 SDtfs, 45 SDslu, 217 SDs, 0 SdLazy, 450 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 6 MinimizatonAttempts, 28 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 3275 SizeOfPredicates, 35 NumberOfNonLiveVariables, 280 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 49/59 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/hrec.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-20-20-362.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/hrec.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-20-20-362.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/hrec.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-20-20-362.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/hrec.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-20-20-362.csv Received shutdown request...