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/ack.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:12:11,784 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:12:11,787 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:12:11,801 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:12:11,802 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:12:11,805 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:12:11,806 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:12:11,809 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:12:11,810 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:12:11,812 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:12:11,815 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:12:11,815 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:12:11,816 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:12:11,817 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:12:11,820 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:12:11,821 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:12:11,822 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:12:11,825 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:12:11,826 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:12:11,827 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:12:11,828 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:12:11,830 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-24 21:12:11,838 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:12:11,851 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:12:11,852 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:12:11,852 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:12:11,852 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:12:11,853 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:12:11,853 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:12:11,854 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:12:11,854 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:12:11,854 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:12:11,854 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:12:11,854 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:12:11,855 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:12:11,855 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:12:11,855 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:12:11,855 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:12:11,855 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:12:11,856 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:12:11,856 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:12:11,856 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:12:11,856 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:12:11,856 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:12:11,858 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:12:11,858 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:12:11,901 INFO ]: Repository-Root is: /tmp [2018-06-24 21:12:11,919 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:12:11,925 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:12:11,926 INFO ]: Initializing SmtParser... [2018-06-24 21:12:11,926 INFO ]: SmtParser initialized [2018-06-24 21:12:11,927 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/ack.smt2 [2018-06-24 21:12:11,928 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 21:12:12,018 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/ack.smt2 unknown [2018-06-24 21:12:12,207 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/ack.smt2 [2018-06-24 21:12:12,211 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:12:12,220 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:12:12,221 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:12:12,221 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:12:12,221 INFO ]: ChcToBoogie initialized [2018-06-24 21:12:12,227 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:12:12" (1/1) ... [2018-06-24 21:12:12,282 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:12 Unit [2018-06-24 21:12:12,282 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:12:12,283 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:12:12,283 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:12:12,283 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:12:12,304 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:12" (1/1) ... [2018-06-24 21:12:12,304 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:12" (1/1) ... [2018-06-24 21:12:12,309 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:12" (1/1) ... [2018-06-24 21:12:12,309 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:12" (1/1) ... [2018-06-24 21:12:12,312 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:12" (1/1) ... [2018-06-24 21:12:12,315 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:12" (1/1) ... [2018-06-24 21:12:12,316 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:12" (1/1) ... [2018-06-24 21:12:12,318 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:12:12,319 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:12:12,319 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:12:12,319 INFO ]: RCFGBuilder initialized [2018-06-24 21:12:12,320 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:12" (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 21:12:12,334 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:12:12,334 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:12:12,334 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:12:12,334 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:12:12,334 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:12:12,334 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 21:12:12,636 INFO ]: Using library mode [2018-06-24 21:12:12,637 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:12:12 BoogieIcfgContainer [2018-06-24 21:12:12,637 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:12:12,637 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:12:12,637 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:12:12,638 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:12:12,639 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:12:12" (1/1) ... [2018-06-24 21:12:12,653 INFO ]: Initial Icfg 13 locations, 17 edges [2018-06-24 21:12:12,655 INFO ]: Using Remove infeasible edges [2018-06-24 21:12:12,655 INFO ]: Using Maximize final states [2018-06-24 21:12:12,656 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:12:12,656 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:12:12,658 INFO ]: Using Remove sink states [2018-06-24 21:12:12,659 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:12:12,659 INFO ]: Using Use SBE [2018-06-24 21:12:12,671 INFO ]: SBE split 0 edges [2018-06-24 21:12:12,676 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:12:12,678 INFO ]: 0 new accepting states [2018-06-24 21:12:12,745 INFO ]: Removed 7 edges and 3 locations by large block encoding [2018-06-24 21:12:12,747 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:12:12,749 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:12:12,749 INFO ]: 0 new accepting states [2018-06-24 21:12:12,749 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:12:12,749 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:12:12,750 INFO ]: Encoded RCFG 8 locations, 11 edges [2018-06-24 21:12:12,750 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:12:12 BasicIcfg [2018-06-24 21:12:12,750 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:12:12,751 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:12:12,751 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:12:12,754 INFO ]: TraceAbstraction initialized [2018-06-24 21:12:12,754 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:12:12" (1/4) ... [2018-06-24 21:12:12,755 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357c0302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:12:12, skipping insertion in model container [2018-06-24 21:12:12,755 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:12" (2/4) ... [2018-06-24 21:12:12,755 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357c0302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:12:12, skipping insertion in model container [2018-06-24 21:12:12,756 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:12:12" (3/4) ... [2018-06-24 21:12:12,756 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357c0302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:12:12, skipping insertion in model container [2018-06-24 21:12:12,756 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:12:12" (4/4) ... [2018-06-24 21:12:12,758 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:12:12,767 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:12:12,775 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:12:12,811 INFO ]: Using default assertion order modulation [2018-06-24 21:12:12,811 INFO ]: Interprodecural is true [2018-06-24 21:12:12,811 INFO ]: Hoare is false [2018-06-24 21:12:12,811 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:12:12,811 INFO ]: Backedges is TWOTRACK [2018-06-24 21:12:12,811 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:12:12,811 INFO ]: Difference is false [2018-06-24 21:12:12,811 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:12:12,811 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:12:12,821 INFO ]: Start isEmpty. Operand 8 states. [2018-06-24 21:12:12,837 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:12:12,837 INFO ]: Found error trace [2018-06-24 21:12:12,838 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:12:12,840 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:12:12,844 INFO ]: Analyzing trace with hash 32879170, now seen corresponding path program 1 times [2018-06-24 21:12:12,846 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:12:12,846 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:12:12,885 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:12:12,885 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:12:12,885 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:12:12,922 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:12:12,997 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:12:12,999 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:12:12,999 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:12:13,000 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:12:13,010 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:12:13,010 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:12:13,013 INFO ]: Start difference. First operand 8 states. Second operand 3 states. [2018-06-24 21:12:13,128 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:12:13,128 INFO ]: Finished difference Result 13 states and 19 transitions. [2018-06-24 21:12:13,128 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:12:13,129 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:12:13,129 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:12:13,138 INFO ]: With dead ends: 13 [2018-06-24 21:12:13,138 INFO ]: Without dead ends: 13 [2018-06-24 21:12:13,139 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 21:12:13,153 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-24 21:12:13,191 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-24 21:12:13,192 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-24 21:12:13,193 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2018-06-24 21:12:13,194 INFO ]: Start accepts. Automaton has 13 states and 19 transitions. Word has length 5 [2018-06-24 21:12:13,195 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:12:13,195 INFO ]: Abstraction has 13 states and 19 transitions. [2018-06-24 21:12:13,195 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:12:13,195 INFO ]: Start isEmpty. Operand 13 states and 19 transitions. [2018-06-24 21:12:13,196 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:12:13,196 INFO ]: Found error trace [2018-06-24 21:12:13,196 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:12:13,196 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:12:13,196 INFO ]: Analyzing trace with hash 32908961, now seen corresponding path program 1 times [2018-06-24 21:12:13,196 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:12:13,196 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:12:13,197 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:12:13,197 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:12:13,197 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:12:13,214 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:12:13,299 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:12:13,299 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:12:13,299 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:12:13,300 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:12:13,300 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:12:13,300 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:12:13,301 INFO ]: Start difference. First operand 13 states and 19 transitions. Second operand 3 states. [2018-06-24 21:12:13,447 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:12:13,447 INFO ]: Finished difference Result 19 states and 29 transitions. [2018-06-24 21:12:13,447 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:12:13,447 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:12:13,447 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:12:13,448 INFO ]: With dead ends: 19 [2018-06-24 21:12:13,448 INFO ]: Without dead ends: 19 [2018-06-24 21:12:13,449 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 21:12:13,449 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-24 21:12:13,453 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-06-24 21:12:13,453 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-24 21:12:13,454 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2018-06-24 21:12:13,454 INFO ]: Start accepts. Automaton has 15 states and 23 transitions. Word has length 5 [2018-06-24 21:12:13,454 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:12:13,454 INFO ]: Abstraction has 15 states and 23 transitions. [2018-06-24 21:12:13,454 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:12:13,454 INFO ]: Start isEmpty. Operand 15 states and 23 transitions. [2018-06-24 21:12:13,457 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:12:13,457 INFO ]: Found error trace [2018-06-24 21:12:13,457 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:12:13,457 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:12:13,457 INFO ]: Analyzing trace with hash 1019795418, now seen corresponding path program 1 times [2018-06-24 21:12:13,457 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:12:13,457 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:12:13,458 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:12:13,458 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:12:13,458 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:12:13,478 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:12:13,555 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:12:13,555 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:12:13,555 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 21:12:13,561 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:12:13,596 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:12:13,604 INFO ]: Computing forward predicates... [2018-06-24 21:12:13,760 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:12:13,779 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:12:13,779 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2018-06-24 21:12:13,779 INFO ]: Interpolant automaton has 6 states [2018-06-24 21:12:13,779 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 21:12:13,779 INFO ]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-24 21:12:13,780 INFO ]: Start difference. First operand 15 states and 23 transitions. Second operand 6 states. [2018-06-24 21:12:14,046 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:12:14,046 INFO ]: Finished difference Result 29 states and 50 transitions. [2018-06-24 21:12:14,047 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 21:12:14,048 INFO ]: Start accepts. Automaton has 6 states. Word has length 6 [2018-06-24 21:12:14,048 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:12:14,050 INFO ]: With dead ends: 29 [2018-06-24 21:12:14,050 INFO ]: Without dead ends: 29 [2018-06-24 21:12:14,050 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-24 21:12:14,050 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-24 21:12:14,055 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 19. [2018-06-24 21:12:14,055 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-24 21:12:14,056 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 31 transitions. [2018-06-24 21:12:14,056 INFO ]: Start accepts. Automaton has 19 states and 31 transitions. Word has length 6 [2018-06-24 21:12:14,056 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:12:14,056 INFO ]: Abstraction has 19 states and 31 transitions. [2018-06-24 21:12:14,056 INFO ]: Interpolant automaton has 6 states. [2018-06-24 21:12:14,056 INFO ]: Start isEmpty. Operand 19 states and 31 transitions. [2018-06-24 21:12:14,057 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-24 21:12:14,057 INFO ]: Found error trace [2018-06-24 21:12:14,057 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:12:14,057 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:12:14,057 INFO ]: Analyzing trace with hash 83914507, now seen corresponding path program 1 times [2018-06-24 21:12:14,057 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:12:14,057 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:12:14,058 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:12:14,058 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:12:14,058 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:12:14,078 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:12:14,178 INFO ]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:12:14,178 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:12:14,178 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-24 21:12:14,178 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:12:14,178 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:12:14,178 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:12:14,178 INFO ]: Start difference. First operand 19 states and 31 transitions. Second operand 5 states. [2018-06-24 21:12:14,406 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:12:14,406 INFO ]: Finished difference Result 24 states and 38 transitions. [2018-06-24 21:12:14,406 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-24 21:12:14,406 INFO ]: Start accepts. Automaton has 5 states. Word has length 11 [2018-06-24 21:12:14,406 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:12:14,407 INFO ]: With dead ends: 24 [2018-06-24 21:12:14,407 INFO ]: Without dead ends: 22 [2018-06-24 21:12:14,408 INFO ]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:12:14,408 INFO ]: Start minimizeSevpa. Operand 22 states. [2018-06-24 21:12:14,411 INFO ]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-06-24 21:12:14,411 INFO ]: Start removeUnreachable. Operand 20 states. [2018-06-24 21:12:14,412 INFO ]: Finished removeUnreachable. Reduced from 20 states to 20 states and 32 transitions. [2018-06-24 21:12:14,412 INFO ]: Start accepts. Automaton has 20 states and 32 transitions. Word has length 11 [2018-06-24 21:12:14,412 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:12:14,412 INFO ]: Abstraction has 20 states and 32 transitions. [2018-06-24 21:12:14,412 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:12:14,412 INFO ]: Start isEmpty. Operand 20 states and 32 transitions. [2018-06-24 21:12:14,413 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-24 21:12:14,413 INFO ]: Found error trace [2018-06-24 21:12:14,413 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:12:14,413 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:12:14,413 INFO ]: Analyzing trace with hash -219348974, now seen corresponding path program 1 times [2018-06-24 21:12:14,413 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:12:14,413 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:12:14,414 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:12:14,414 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:12:14,414 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:12:14,437 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:12:14,812 INFO ]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:12:14,812 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:12:14,812 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 [2018-06-24 21:12:14,822 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:12:14,842 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:12:14,844 INFO ]: Computing forward predicates... [2018-06-24 21:12:15,293 INFO ]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:12:15,314 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:12:15,314 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2018-06-24 21:12:15,314 INFO ]: Interpolant automaton has 14 states [2018-06-24 21:12:15,314 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-24 21:12:15,314 INFO ]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2018-06-24 21:12:15,314 INFO ]: Start difference. First operand 20 states and 32 transitions. Second operand 14 states. [2018-06-24 21:12:15,629 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:12:15,629 INFO ]: Finished difference Result 42 states and 68 transitions. [2018-06-24 21:12:15,629 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-24 21:12:15,629 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-24 21:12:15,629 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:12:15,630 INFO ]: With dead ends: 42 [2018-06-24 21:12:15,630 INFO ]: Without dead ends: 42 [2018-06-24 21:12:15,631 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2018-06-24 21:12:15,631 INFO ]: Start minimizeSevpa. Operand 42 states. [2018-06-24 21:12:15,637 INFO ]: Finished minimizeSevpa. Reduced states from 42 to 28. [2018-06-24 21:12:15,637 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-24 21:12:15,639 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 46 transitions. [2018-06-24 21:12:15,639 INFO ]: Start accepts. Automaton has 28 states and 46 transitions. Word has length 12 [2018-06-24 21:12:15,639 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:12:15,639 INFO ]: Abstraction has 28 states and 46 transitions. [2018-06-24 21:12:15,639 INFO ]: Interpolant automaton has 14 states. [2018-06-24 21:12:15,639 INFO ]: Start isEmpty. Operand 28 states and 46 transitions. [2018-06-24 21:12:15,641 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-24 21:12:15,641 INFO ]: Found error trace [2018-06-24 21:12:15,641 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-06-24 21:12:15,641 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:12:15,641 INFO ]: Analyzing trace with hash 105085146, now seen corresponding path program 2 times [2018-06-24 21:12:15,641 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:12:15,641 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:12:15,642 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:12:15,642 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:12:15,642 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:12:15,667 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:12:15,859 INFO ]: Checked inductivity of 23 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-24 21:12:15,860 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:12:15,860 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 [2018-06-24 21:12:15,865 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:12:15,904 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:12:15,905 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:12:15,907 INFO ]: Computing forward predicates... [2018-06-24 21:12:16,278 INFO ]: Checked inductivity of 23 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-24 21:12:16,298 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:12:16,299 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 20 [2018-06-24 21:12:16,299 INFO ]: Interpolant automaton has 20 states [2018-06-24 21:12:16,299 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-24 21:12:16,299 INFO ]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2018-06-24 21:12:16,299 INFO ]: Start difference. First operand 28 states and 46 transitions. Second operand 20 states. [2018-06-24 21:12:16,735 WARN ]: Spent 155.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 18 [2018-06-24 21:12:17,639 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:12:17,639 INFO ]: Finished difference Result 57 states and 121 transitions. [2018-06-24 21:12:17,639 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-06-24 21:12:17,639 INFO ]: Start accepts. Automaton has 20 states. Word has length 18 [2018-06-24 21:12:17,639 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:12:17,639 INFO ]: With dead ends: 57 [2018-06-24 21:12:17,639 INFO ]: Without dead ends: 0 [2018-06-24 21:12:17,640 INFO ]: 0 DeclaredPredicates, 59 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=376, Invalid=1880, Unknown=0, NotChecked=0, Total=2256 [2018-06-24 21:12:17,640 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:12:17,640 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:12:17,640 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:12:17,640 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:12:17,640 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-06-24 21:12:17,640 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:12:17,640 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:12:17,640 INFO ]: Interpolant automaton has 20 states. [2018-06-24 21:12:17,640 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:12:17,640 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:12:17,643 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:12:17,644 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:12:17 BasicIcfg [2018-06-24 21:12:17,645 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:12:17,645 INFO ]: Toolchain (without parser) took 5433.70 ms. Allocated memory was 306.7 MB in the beginning and 367.0 MB in the end (delta: 60.3 MB). Free memory was 263.1 MB in the beginning and 331.2 MB in the end (delta: -68.1 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:12:17,646 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:12:17,647 INFO ]: ChcToBoogie took 62.05 ms. Allocated memory is still 306.7 MB. Free memory was 261.1 MB in the beginning and 259.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:12:17,647 INFO ]: Boogie Preprocessor took 35.04 ms. Allocated memory is still 306.7 MB. Free memory is still 259.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:12:17,648 INFO ]: RCFGBuilder took 317.89 ms. Allocated memory is still 306.7 MB. Free memory was 259.1 MB in the beginning and 251.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:12:17,648 INFO ]: BlockEncodingV2 took 112.96 ms. Allocated memory is still 306.7 MB. Free memory was 251.1 MB in the beginning and 247.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:12:17,649 INFO ]: TraceAbstraction took 4893.43 ms. Allocated memory was 306.7 MB in the beginning and 367.0 MB in the end (delta: 60.3 MB). Free memory was 247.1 MB in the beginning and 331.2 MB in the end (delta: -84.1 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:12:17,652 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 13 locations, 17 edges - StatisticsResult: Encoded RCFG 8 locations, 11 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 62.05 ms. Allocated memory is still 306.7 MB. Free memory was 261.1 MB in the beginning and 259.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 35.04 ms. Allocated memory is still 306.7 MB. Free memory is still 259.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 317.89 ms. Allocated memory is still 306.7 MB. Free memory was 259.1 MB in the beginning and 251.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 112.96 ms. Allocated memory is still 306.7 MB. Free memory was 251.1 MB in the beginning and 247.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4893.43 ms. Allocated memory was 306.7 MB in the beginning and 367.0 MB in the end (delta: 60.3 MB). Free memory was 247.1 MB in the beginning and 331.2 MB in the end (delta: -84.1 MB). There was no memory consumed. 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, 8 locations, 1 error locations. SAFE Result, 4.8s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 2.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 76 SDtfs, 49 SDslu, 96 SDs, 0 SdLazy, 710 SolverSat, 142 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 30 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 4478 SizeOfPredicates, 21 NumberOfNonLiveVariables, 282 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 36/69 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/ack.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-12-17-665.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ack.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-12-17-665.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ack.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-12-17-665.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ack.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-12-17-665.csv Received shutdown request...