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/sum.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:24:21,062 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:24:21,065 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:24:21,077 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:24:21,078 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:24:21,078 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:24:21,082 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:24:21,084 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:24:21,086 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:24:21,088 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:24:21,089 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:24:21,089 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:24:21,090 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:24:21,091 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:24:21,092 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:24:21,096 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:24:21,097 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:24:21,111 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:24:21,113 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:24:21,114 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:24:21,115 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:24:21,117 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:24:21,117 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:24:21,117 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:24:21,118 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:24:21,119 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:24:21,120 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:24:21,120 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:24:21,127 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:24:21,127 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:24:21,128 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:24:21,129 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:24:21,129 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:24:21,130 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:24:21,130 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:24:21,130 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:24:21,148 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:24:21,149 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:24:21,149 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:24:21,149 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:24:21,150 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:24:21,150 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:24:21,150 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:24:21,153 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:24:21,154 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:24:21,154 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:24:21,154 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:24:21,154 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:24:21,155 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:24:21,155 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:24:21,155 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:24:21,155 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:24:21,155 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:24:21,155 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:24:21,156 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:24:21,156 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:24:21,156 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:24:21,159 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:24:21,159 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:24:21,205 INFO ]: Repository-Root is: /tmp [2018-06-24 21:24:21,223 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:24:21,228 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:24:21,230 INFO ]: Initializing SmtParser... [2018-06-24 21:24:21,230 INFO ]: SmtParser initialized [2018-06-24 21:24:21,231 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/sum.smt2 [2018-06-24 21:24:21,232 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 21:24:21,320 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/sum.smt2 unknown [2018-06-24 21:24:21,457 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/sum.smt2 [2018-06-24 21:24:21,462 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:24:21,469 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:24:21,470 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:24:21,470 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:24:21,470 INFO ]: ChcToBoogie initialized [2018-06-24 21:24:21,473 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:24:21" (1/1) ... [2018-06-24 21:24:21,527 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:21 Unit [2018-06-24 21:24:21,527 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:24:21,528 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:24:21,528 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:24:21,528 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:24:21,550 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:21" (1/1) ... [2018-06-24 21:24:21,551 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:21" (1/1) ... [2018-06-24 21:24:21,555 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:21" (1/1) ... [2018-06-24 21:24:21,555 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:21" (1/1) ... [2018-06-24 21:24:21,558 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:21" (1/1) ... [2018-06-24 21:24:21,559 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:21" (1/1) ... [2018-06-24 21:24:21,560 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:21" (1/1) ... [2018-06-24 21:24:21,561 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:24:21,562 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:24:21,562 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:24:21,562 INFO ]: RCFGBuilder initialized [2018-06-24 21:24:21,563 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:21" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:24:21,576 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:24:21,576 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:24:21,576 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:24:21,576 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:24:21,577 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:24:21,577 INFO ]: Found implementation of procedure Ultimate.START [2018-06-24 21:24:21,737 INFO ]: Using library mode [2018-06-24 21:24:21,738 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:24:21 BoogieIcfgContainer [2018-06-24 21:24:21,738 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:24:21,738 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:24:21,738 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:24:21,739 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:24:21,741 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:24:21" (1/1) ... [2018-06-24 21:24:21,756 INFO ]: Initial Icfg 10 locations, 11 edges [2018-06-24 21:24:21,757 INFO ]: Using Remove infeasible edges [2018-06-24 21:24:21,758 INFO ]: Using Maximize final states [2018-06-24 21:24:21,758 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:24:21,758 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:24:21,760 INFO ]: Using Remove sink states [2018-06-24 21:24:21,761 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:24:21,761 INFO ]: Using Use SBE [2018-06-24 21:24:21,767 INFO ]: SBE split 0 edges [2018-06-24 21:24:21,772 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:24:21,773 INFO ]: 0 new accepting states [2018-06-24 21:24:21,799 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-24 21:24:21,801 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:24:21,805 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:24:21,805 INFO ]: 0 new accepting states [2018-06-24 21:24:21,805 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:24:21,805 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:24:21,805 INFO ]: Encoded RCFG 6 locations, 6 edges [2018-06-24 21:24:21,807 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:24:21 BasicIcfg [2018-06-24 21:24:21,807 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:24:21,808 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:24:21,808 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:24:21,812 INFO ]: TraceAbstraction initialized [2018-06-24 21:24:21,812 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:24:21" (1/4) ... [2018-06-24 21:24:21,813 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7972815b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:24:21, skipping insertion in model container [2018-06-24 21:24:21,813 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:21" (2/4) ... [2018-06-24 21:24:21,813 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7972815b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:24:21, skipping insertion in model container [2018-06-24 21:24:21,813 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:24:21" (3/4) ... [2018-06-24 21:24:21,813 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7972815b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:24:21, skipping insertion in model container [2018-06-24 21:24:21,814 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:24:21" (4/4) ... [2018-06-24 21:24:21,815 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:24:21,825 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:24:21,845 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:24:21,914 INFO ]: Using default assertion order modulation [2018-06-24 21:24:21,915 INFO ]: Interprodecural is true [2018-06-24 21:24:21,915 INFO ]: Hoare is false [2018-06-24 21:24:21,915 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:24:21,915 INFO ]: Backedges is TWOTRACK [2018-06-24 21:24:21,915 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:24:21,915 INFO ]: Difference is false [2018-06-24 21:24:21,915 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:24:21,915 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:24:21,927 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 21:24:21,937 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:24:21,937 INFO ]: Found error trace [2018-06-24 21:24:21,938 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:24:21,938 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:24:21,942 INFO ]: Analyzing trace with hash 35433345, now seen corresponding path program 1 times [2018-06-24 21:24:21,943 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:24:21,943 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:24:21,974 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:24:21,974 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:24:21,974 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:24:22,013 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:24:22,112 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:24:22,114 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:24:22,114 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:24:22,115 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:24:22,127 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:24:22,127 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:24:22,129 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 21:24:22,214 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:24:22,215 INFO ]: Finished difference Result 7 states and 7 transitions. [2018-06-24 21:24:22,217 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:24:22,218 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:24:22,219 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:24:22,224 INFO ]: With dead ends: 7 [2018-06-24 21:24:22,224 INFO ]: Without dead ends: 7 [2018-06-24 21:24:22,225 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 21:24:22,239 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 21:24:22,261 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 21:24:22,263 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:24:22,263 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-06-24 21:24:22,266 INFO ]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-06-24 21:24:22,266 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:24:22,266 INFO ]: Abstraction has 7 states and 7 transitions. [2018-06-24 21:24:22,266 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:24:22,266 INFO ]: Start isEmpty. Operand 7 states and 7 transitions. [2018-06-24 21:24:22,266 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:24:22,266 INFO ]: Found error trace [2018-06-24 21:24:22,267 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:24:22,267 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:24:22,267 INFO ]: Analyzing trace with hash 1098137897, now seen corresponding path program 1 times [2018-06-24 21:24:22,267 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:24:22,267 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:24:22,268 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:24:22,268 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:24:22,268 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:24:22,286 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:24:22,450 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:24:22,450 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:24:22,450 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) [2018-06-24 21:24:22,467 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:24:22,506 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:24:22,514 INFO ]: Computing forward predicates... [2018-06-24 21:24:22,540 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:24:22,574 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:24:22,574 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-24 21:24:22,574 INFO ]: Interpolant automaton has 4 states [2018-06-24 21:24:22,574 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 21:24:22,574 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 21:24:22,575 INFO ]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-06-24 21:24:22,654 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:24:22,654 INFO ]: Finished difference Result 4 states and 4 transitions. [2018-06-24 21:24:22,655 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 21:24:22,655 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-24 21:24:22,655 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:24:22,655 INFO ]: With dead ends: 4 [2018-06-24 21:24:22,655 INFO ]: Without dead ends: 0 [2018-06-24 21:24:22,656 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:24:22,656 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:24:22,656 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:24:22,656 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:24:22,656 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:24:22,656 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-06-24 21:24:22,656 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:24:22,656 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:24:22,656 INFO ]: Interpolant automaton has 4 states. [2018-06-24 21:24:22,656 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:24:22,656 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:24:22,659 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:24:22,660 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:24:22 BasicIcfg [2018-06-24 21:24:22,660 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:24:22,661 INFO ]: Toolchain (without parser) took 1198.78 ms. Allocated memory is still 307.2 MB. Free memory was 263.8 MB in the beginning and 227.4 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:22,663 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 271.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:24:22,663 INFO ]: ChcToBoogie took 58.33 ms. Allocated memory is still 307.2 MB. Free memory was 263.8 MB in the beginning and 261.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:22,664 INFO ]: Boogie Preprocessor took 33.08 ms. Allocated memory is still 307.2 MB. Free memory was 261.8 MB in the beginning and 259.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:22,665 INFO ]: RCFGBuilder took 176.28 ms. Allocated memory is still 307.2 MB. Free memory was 259.8 MB in the beginning and 253.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:22,665 INFO ]: BlockEncodingV2 took 69.00 ms. Allocated memory is still 307.2 MB. Free memory was 253.8 MB in the beginning and 251.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:22,666 INFO ]: TraceAbstraction took 852.11 ms. Allocated memory is still 307.2 MB. Free memory was 251.8 MB in the beginning and 227.4 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:22,669 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 11 edges - StatisticsResult: Encoded RCFG 6 locations, 6 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 271.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 58.33 ms. Allocated memory is still 307.2 MB. Free memory was 263.8 MB in the beginning and 261.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 33.08 ms. Allocated memory is still 307.2 MB. Free memory was 261.8 MB in the beginning and 259.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 176.28 ms. Allocated memory is still 307.2 MB. Free memory was 259.8 MB in the beginning and 253.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 69.00 ms. Allocated memory is still 307.2 MB. Free memory was 253.8 MB in the beginning and 251.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 852.11 ms. Allocated memory is still 307.2 MB. Free memory was 251.8 MB in the beginning and 227.4 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 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, 6 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7 SDtfs, 0 SDslu, 5 SDs, 0 SdLazy, 6 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=1, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 174 SizeOfPredicates, 1 NumberOfNonLiveVariables, 36 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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/sum.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-24-22-682.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-24-22-682.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-24-22-682.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-24-22-682.csv Received shutdown request...