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/mc91_cps.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:25:48,561 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:25:48,563 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:25:48,576 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:25:48,577 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:25:48,577 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:25:48,578 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:25:48,585 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:25:48,587 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:25:48,588 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:25:48,590 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:25:48,590 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:25:48,591 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:25:48,592 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:25:48,595 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:25:48,596 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:25:48,597 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:25:48,598 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:25:48,608 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:25:48,609 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:25:48,610 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:25:48,611 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:25:48,616 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:25:48,616 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:25:48,616 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:25:48,617 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:25:48,618 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:25:48,621 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:25:48,622 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:25:48,622 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:25:48,623 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:25:48,623 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:25:48,623 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:25:48,624 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:25:48,627 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:25:48,627 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:25:48,628 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:25:48,652 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:25:48,652 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:25:48,653 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:25:48,653 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:25:48,654 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:25:48,654 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:25:48,654 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:25:48,654 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:25:48,655 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:25:48,657 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:25:48,657 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:25:48,658 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:25:48,658 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:25:48,658 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:25:48,658 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:25:48,658 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:25:48,659 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:25:48,659 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:25:48,659 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:25:48,659 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:25:48,659 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:25:48,662 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:25:48,663 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:25:48,716 INFO ]: Repository-Root is: /tmp [2018-06-26 18:25:48,730 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:25:48,733 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:25:48,734 INFO ]: Initializing SmtParser... [2018-06-26 18:25:48,735 INFO ]: SmtParser initialized [2018-06-26 18:25:48,735 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/mc91_cps.smt2 [2018-06-26 18:25:48,737 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 [2018-06-26 18:25:48,828 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/mc91_cps.smt2 unknown [2018-06-26 18:25:49,041 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/mc91_cps.smt2 [2018-06-26 18:25:49,046 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:25:49,054 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:25:49,055 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:25:49,055 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:25:49,055 INFO ]: ChcToBoogie initialized [2018-06-26 18:25:49,065 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:25:49" (1/1) ... [2018-06-26 18:25:49,127 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:25:49 Unit [2018-06-26 18:25:49,127 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:25:49,127 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:25:49,127 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:25:49,127 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:25:49,152 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:25:49" (1/1) ... [2018-06-26 18:25:49,152 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:25:49" (1/1) ... [2018-06-26 18:25:49,158 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:25:49" (1/1) ... [2018-06-26 18:25:49,158 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:25:49" (1/1) ... [2018-06-26 18:25:49,161 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:25:49" (1/1) ... [2018-06-26 18:25:49,164 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:25:49" (1/1) ... [2018-06-26 18:25:49,165 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:25:49" (1/1) ... [2018-06-26 18:25:49,169 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:25:49,169 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:25:49,169 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:25:49,169 INFO ]: RCFGBuilder initialized [2018-06-26 18:25:49,170 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:25:49" (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) [2018-06-26 18:25:49,190 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:25:49,191 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:25:49,191 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:25:49,191 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:25:49,191 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:25:49,191 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 [2018-06-26 18:25:49,641 INFO ]: Using library mode [2018-06-26 18:25:49,642 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:25:49 BoogieIcfgContainer [2018-06-26 18:25:49,642 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:25:49,642 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:25:49,642 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:25:49,643 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:25:49,644 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:25:49" (1/1) ... [2018-06-26 18:25:49,661 INFO ]: Initial Icfg 22 locations, 30 edges [2018-06-26 18:25:49,663 INFO ]: Using Remove infeasible edges [2018-06-26 18:25:49,664 INFO ]: Using Maximize final states [2018-06-26 18:25:49,664 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:25:49,665 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:25:49,666 INFO ]: Using Remove sink states [2018-06-26 18:25:49,668 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:25:49,668 INFO ]: Using Use SBE [2018-06-26 18:25:49,676 INFO ]: SBE split 0 edges [2018-06-26 18:25:49,681 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-26 18:25:49,683 INFO ]: 0 new accepting states [2018-06-26 18:25:49,843 INFO ]: Removed 22 edges and 8 locations by large block encoding [2018-06-26 18:25:49,846 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:25:49,847 INFO ]: Removed 1 edges and 0 locations because of local infeasibility [2018-06-26 18:25:49,847 INFO ]: 0 new accepting states [2018-06-26 18:25:49,848 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:25:49,848 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:25:49,848 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:25:49,848 INFO ]: 0 new accepting states [2018-06-26 18:25:49,848 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:25:49,849 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:25:49,849 INFO ]: Encoded RCFG 12 locations, 19 edges [2018-06-26 18:25:49,849 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:25:49 BasicIcfg [2018-06-26 18:25:49,849 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:25:49,850 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:25:49,850 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:25:49,853 INFO ]: TraceAbstraction initialized [2018-06-26 18:25:49,853 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:25:49" (1/4) ... [2018-06-26 18:25:49,854 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3111bed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:25:49, skipping insertion in model container [2018-06-26 18:25:49,854 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:25:49" (2/4) ... [2018-06-26 18:25:49,854 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3111bed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:25:49, skipping insertion in model container [2018-06-26 18:25:49,854 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:25:49" (3/4) ... [2018-06-26 18:25:49,855 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3111bed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:25:49, skipping insertion in model container [2018-06-26 18:25:49,855 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:25:49" (4/4) ... [2018-06-26 18:25:49,857 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:25:49,864 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:25:49,880 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:25:49,929 INFO ]: Using default assertion order modulation [2018-06-26 18:25:49,930 INFO ]: Interprodecural is true [2018-06-26 18:25:49,930 INFO ]: Hoare is false [2018-06-26 18:25:49,930 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:25:49,930 INFO ]: Backedges is TWOTRACK [2018-06-26 18:25:49,930 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:25:49,930 INFO ]: Difference is false [2018-06-26 18:25:49,930 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:25:49,930 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:25:49,945 INFO ]: Start isEmpty. Operand 12 states. [2018-06-26 18:25:49,964 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:25:49,964 INFO ]: Found error trace [2018-06-26 18:25:49,965 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:25:49,965 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:25:49,969 INFO ]: Analyzing trace with hash 38978090, now seen corresponding path program 1 times [2018-06-26 18:25:49,971 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:25:49,971 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:25:50,010 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:25:50,011 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:25:50,011 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:25:50,044 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:25:50,105 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:25:50,107 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:25:50,107 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:25:50,108 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:25:50,118 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:25:50,119 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:25:50,120 INFO ]: Start difference. First operand 12 states. Second operand 3 states. [2018-06-26 18:25:50,282 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:25:50,282 INFO ]: Finished difference Result 19 states and 32 transitions. [2018-06-26 18:25:50,282 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:25:50,284 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:25:50,284 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:25:50,294 INFO ]: With dead ends: 19 [2018-06-26 18:25:50,295 INFO ]: Without dead ends: 19 [2018-06-26 18:25:50,296 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 [2018-06-26 18:25:50,308 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-26 18:25:50,336 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-26 18:25:50,337 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-26 18:25:50,338 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 32 transitions. [2018-06-26 18:25:50,341 INFO ]: Start accepts. Automaton has 19 states and 32 transitions. Word has length 5 [2018-06-26 18:25:50,343 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:25:50,343 INFO ]: Abstraction has 19 states and 32 transitions. [2018-06-26 18:25:50,343 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:25:50,343 INFO ]: Start isEmpty. Operand 19 states and 32 transitions. [2018-06-26 18:25:50,347 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-26 18:25:50,347 INFO ]: Found error trace [2018-06-26 18:25:50,347 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:25:50,347 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:25:50,347 INFO ]: Analyzing trace with hash 1184650358, now seen corresponding path program 1 times [2018-06-26 18:25:50,347 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:25:50,347 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:25:50,348 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:25:50,348 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:25:50,348 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:25:50,363 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:25:50,399 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:25:50,399 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:25:50,399 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:25:50,400 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:25:50,400 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:25:50,400 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:25:50,400 INFO ]: Start difference. First operand 19 states and 32 transitions. Second operand 3 states. [2018-06-26 18:25:50,613 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:25:50,613 INFO ]: Finished difference Result 26 states and 43 transitions. [2018-06-26 18:25:50,613 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:25:50,613 INFO ]: Start accepts. Automaton has 3 states. Word has length 10 [2018-06-26 18:25:50,613 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:25:50,615 INFO ]: With dead ends: 26 [2018-06-26 18:25:50,615 INFO ]: Without dead ends: 26 [2018-06-26 18:25:50,615 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 [2018-06-26 18:25:50,615 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-26 18:25:50,621 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-06-26 18:25:50,621 INFO ]: Start removeUnreachable. Operand 26 states. [2018-06-26 18:25:50,622 INFO ]: Finished removeUnreachable. Reduced from 26 states to 26 states and 43 transitions. [2018-06-26 18:25:50,622 INFO ]: Start accepts. Automaton has 26 states and 43 transitions. Word has length 10 [2018-06-26 18:25:50,623 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:25:50,623 INFO ]: Abstraction has 26 states and 43 transitions. [2018-06-26 18:25:50,623 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:25:50,623 INFO ]: Start isEmpty. Operand 26 states and 43 transitions. [2018-06-26 18:25:50,628 INFO ]: Finished isEmpty. Found accepting run of length 21 [2018-06-26 18:25:50,628 INFO ]: Found error trace [2018-06-26 18:25:50,628 INFO ]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:25:50,628 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:25:50,629 INFO ]: Analyzing trace with hash 1872055267, now seen corresponding path program 1 times [2018-06-26 18:25:50,629 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:25:50,629 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:25:50,629 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:25:50,629 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:25:50,629 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:25:50,658 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:25:51,296 INFO ]: Checked inductivity of 18 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-26 18:25:51,297 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:25:51,298 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 [2018-06-26 18:25:51,316 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:25:51,362 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:25:51,368 INFO ]: Computing forward predicates... [2018-06-26 18:25:51,696 INFO ]: Checked inductivity of 18 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-26 18:25:51,727 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:25:51,727 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2018-06-26 18:25:51,727 INFO ]: Interpolant automaton has 13 states [2018-06-26 18:25:51,727 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-26 18:25:51,727 INFO ]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-06-26 18:25:51,727 INFO ]: Start difference. First operand 26 states and 43 transitions. Second operand 13 states. [2018-06-26 18:25:52,539 WARN ]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-26 18:25:53,167 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:25:53,167 INFO ]: Finished difference Result 48 states and 98 transitions. [2018-06-26 18:25:53,167 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-26 18:25:53,167 INFO ]: Start accepts. Automaton has 13 states. Word has length 20 [2018-06-26 18:25:53,168 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:25:53,172 INFO ]: With dead ends: 48 [2018-06-26 18:25:53,172 INFO ]: Without dead ends: 48 [2018-06-26 18:25:53,172 INFO ]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2018-06-26 18:25:53,172 INFO ]: Start minimizeSevpa. Operand 48 states. [2018-06-26 18:25:53,183 INFO ]: Finished minimizeSevpa. Reduced states from 48 to 37. [2018-06-26 18:25:53,183 INFO ]: Start removeUnreachable. Operand 37 states. [2018-06-26 18:25:53,184 INFO ]: Finished removeUnreachable. Reduced from 37 states to 37 states and 68 transitions. [2018-06-26 18:25:53,185 INFO ]: Start accepts. Automaton has 37 states and 68 transitions. Word has length 20 [2018-06-26 18:25:53,185 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:25:53,185 INFO ]: Abstraction has 37 states and 68 transitions. [2018-06-26 18:25:53,185 INFO ]: Interpolant automaton has 13 states. [2018-06-26 18:25:53,185 INFO ]: Start isEmpty. Operand 37 states and 68 transitions. [2018-06-26 18:25:53,187 INFO ]: Finished isEmpty. Found accepting run of length 36 [2018-06-26 18:25:53,187 INFO ]: Found error trace [2018-06-26 18:25:53,187 INFO ]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-06-26 18:25:53,187 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:25:53,188 INFO ]: Analyzing trace with hash -443926723, now seen corresponding path program 1 times [2018-06-26 18:25:53,188 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:25:53,188 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:25:53,190 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:25:53,190 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:25:53,190 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:25:53,217 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:25:53,339 INFO ]: Checked inductivity of 69 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-06-26 18:25:53,339 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:25:53,339 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 [2018-06-26 18:25:53,354 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:25:53,396 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:25:53,400 INFO ]: Computing forward predicates... [2018-06-26 18:25:53,709 INFO ]: Checked inductivity of 69 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-06-26 18:25:53,737 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:25:53,737 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 16 [2018-06-26 18:25:53,737 INFO ]: Interpolant automaton has 16 states [2018-06-26 18:25:53,737 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-26 18:25:53,737 INFO ]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2018-06-26 18:25:53,738 INFO ]: Start difference. First operand 37 states and 68 transitions. Second operand 16 states. [2018-06-26 18:25:54,592 WARN ]: Spent 227.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2018-06-26 18:25:55,080 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:25:55,080 INFO ]: Finished difference Result 87 states and 206 transitions. [2018-06-26 18:25:55,081 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-06-26 18:25:55,081 INFO ]: Start accepts. Automaton has 16 states. Word has length 35 [2018-06-26 18:25:55,081 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:25:55,084 INFO ]: With dead ends: 87 [2018-06-26 18:25:55,084 INFO ]: Without dead ends: 62 [2018-06-26 18:25:55,084 INFO ]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2018-06-26 18:25:55,085 INFO ]: Start minimizeSevpa. Operand 62 states. [2018-06-26 18:25:55,102 INFO ]: Finished minimizeSevpa. Reduced states from 62 to 47. [2018-06-26 18:25:55,102 INFO ]: Start removeUnreachable. Operand 47 states. [2018-06-26 18:25:55,105 INFO ]: Finished removeUnreachable. Reduced from 47 states to 47 states and 94 transitions. [2018-06-26 18:25:55,105 INFO ]: Start accepts. Automaton has 47 states and 94 transitions. Word has length 35 [2018-06-26 18:25:55,105 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:25:55,105 INFO ]: Abstraction has 47 states and 94 transitions. [2018-06-26 18:25:55,105 INFO ]: Interpolant automaton has 16 states. [2018-06-26 18:25:55,105 INFO ]: Start isEmpty. Operand 47 states and 94 transitions. [2018-06-26 18:25:55,108 INFO ]: Finished isEmpty. Found accepting run of length 36 [2018-06-26 18:25:55,108 INFO ]: Found error trace [2018-06-26 18:25:55,108 INFO ]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-06-26 18:25:55,108 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:25:55,108 INFO ]: Analyzing trace with hash -1458605253, now seen corresponding path program 2 times [2018-06-26 18:25:55,108 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:25:55,108 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:25:55,109 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:25:55,109 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:25:55,109 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:25:55,132 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:25:55,311 INFO ]: Checked inductivity of 69 backedges. 27 proven. 19 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-06-26 18:25:55,311 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:25:55,312 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 [2018-06-26 18:25:55,318 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-26 18:25:55,359 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-26 18:25:55,359 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:25:55,363 INFO ]: Computing forward predicates... [2018-06-26 18:25:55,572 INFO ]: Checked inductivity of 69 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-06-26 18:25:55,592 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:25:55,592 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 18 [2018-06-26 18:25:55,593 INFO ]: Interpolant automaton has 18 states [2018-06-26 18:25:55,593 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-26 18:25:55,593 INFO ]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2018-06-26 18:25:55,593 INFO ]: Start difference. First operand 47 states and 94 transitions. Second operand 18 states. [2018-06-26 18:25:56,006 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:25:56,006 INFO ]: Finished difference Result 32 states and 56 transitions. [2018-06-26 18:25:56,006 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-26 18:25:56,006 INFO ]: Start accepts. Automaton has 18 states. Word has length 35 [2018-06-26 18:25:56,006 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:25:56,006 INFO ]: With dead ends: 32 [2018-06-26 18:25:56,006 INFO ]: Without dead ends: 0 [2018-06-26 18:25:56,007 INFO ]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2018-06-26 18:25:56,007 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 18:25:56,007 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 18:25:56,007 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 18:25:56,007 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 18:25:56,007 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2018-06-26 18:25:56,007 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:25:56,007 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 18:25:56,007 INFO ]: Interpolant automaton has 18 states. [2018-06-26 18:25:56,007 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 18:25:56,007 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 18:25:56,010 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:25:56,012 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:25:56 BasicIcfg [2018-06-26 18:25:56,012 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:25:56,013 INFO ]: Toolchain (without parser) took 6966.10 ms. Allocated memory was 309.3 MB in the beginning and 362.3 MB in the end (delta: 53.0 MB). Free memory was 263.7 MB in the beginning and 254.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 62.3 MB. Max. memory is 3.6 GB. [2018-06-26 18:25:56,014 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:25:56,014 INFO ]: ChcToBoogie took 72.09 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 259.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:25:56,014 INFO ]: Boogie Preprocessor took 41.48 ms. Allocated memory is still 309.3 MB. Free memory is still 259.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:25:56,015 INFO ]: RCFGBuilder took 472.56 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 249.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:25:56,015 INFO ]: BlockEncodingV2 took 207.01 ms. Allocated memory is still 309.3 MB. Free memory was 249.7 MB in the beginning and 243.7 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:25:56,016 INFO ]: TraceAbstraction took 6161.73 ms. Allocated memory was 309.3 MB in the beginning and 362.3 MB in the end (delta: 53.0 MB). Free memory was 243.7 MB in the beginning and 254.3 MB in the end (delta: -10.6 MB). Peak memory consumption was 42.3 MB. Max. memory is 3.6 GB. [2018-06-26 18:25:56,019 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 22 locations, 30 edges - StatisticsResult: Encoded RCFG 12 locations, 19 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 72.09 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 259.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 41.48 ms. Allocated memory is still 309.3 MB. Free memory is still 259.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 472.56 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 249.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 207.01 ms. Allocated memory is still 309.3 MB. Free memory was 249.7 MB in the beginning and 243.7 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 6161.73 ms. Allocated memory was 309.3 MB in the beginning and 362.3 MB in the end (delta: 53.0 MB). Free memory was 243.7 MB in the beginning and 254.3 MB in the end (delta: -10.6 MB). Peak memory consumption was 42.3 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, 12 locations, 1 error locations. SAFE Result, 6.0s OverallTime, 5 OverallIterations, 7 TraceHistogramMax, 3.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 116 SDtfs, 243 SDslu, 437 SDs, 0 SdLazy, 1128 SolverSat, 225 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 89 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=4, 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, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 195 NumberOfCodeBlocks, 195 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 187 ConstructedInterpolants, 0 QuantifiedInterpolants, 19543 SizeOfPredicates, 42 NumberOfNonLiveVariables, 498 ConjunctsInSsa, 103 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 216/315 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/mc91_cps.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-25-56-030.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_cps.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-25-56-030.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_cps.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-25-56-030.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_cps.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-25-56-030.csv Received shutdown request...