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_intro.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:24:16,592 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:24:16,595 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:24:16,607 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:24:16,607 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:24:16,608 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:24:16,611 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:24:16,614 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:24:16,615 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:24:16,617 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:24:16,618 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:24:16,618 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:24:16,619 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:24:16,620 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:24:16,621 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:24:16,625 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:24:16,626 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:24:16,639 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:24:16,640 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:24:16,641 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:24:16,642 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:24:16,644 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:24:16,644 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:24:16,644 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:24:16,645 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:24:16,646 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:24:16,646 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:24:16,651 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:24:16,652 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:24:16,652 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:24:16,652 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:24:16,653 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:24:16,653 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:24:16,657 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:24:16,658 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:24:16,658 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:24:16,679 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:24:16,679 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:24:16,682 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:24:16,683 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:24:16,684 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:24:16,684 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:24:16,684 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:24:16,684 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:24:16,685 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:24:16,685 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:24:16,685 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:24:16,685 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:24:16,685 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:24:16,688 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:24:16,688 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:24:16,689 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:24:16,689 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:24:16,689 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:24:16,689 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:24:16,689 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:24:16,690 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:24:16,691 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:24:16,691 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:24:16,749 INFO ]: Repository-Root is: /tmp [2018-06-24 21:24:16,765 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:24:16,771 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:24:16,772 INFO ]: Initializing SmtParser... [2018-06-24 21:24:16,772 INFO ]: SmtParser initialized [2018-06-24 21:24:16,773 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/sum_intro.smt2 [2018-06-24 21:24:16,774 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 21:24:16,861 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/sum_intro.smt2 unknown [2018-06-24 21:24:17,039 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/sum_intro.smt2 [2018-06-24 21:24:17,043 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:24:17,056 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:24:17,057 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:24:17,057 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:24:17,057 INFO ]: ChcToBoogie initialized [2018-06-24 21:24:17,060 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:24:17" (1/1) ... [2018-06-24 21:24:17,118 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:17 Unit [2018-06-24 21:24:17,118 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:24:17,119 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:24:17,119 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:24:17,119 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:24:17,138 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:17" (1/1) ... [2018-06-24 21:24:17,139 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:17" (1/1) ... [2018-06-24 21:24:17,143 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:17" (1/1) ... [2018-06-24 21:24:17,143 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:17" (1/1) ... [2018-06-24 21:24:17,146 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:17" (1/1) ... [2018-06-24 21:24:17,148 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:17" (1/1) ... [2018-06-24 21:24:17,149 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:17" (1/1) ... [2018-06-24 21:24:17,150 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:24:17,151 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:24:17,151 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:24:17,151 INFO ]: RCFGBuilder initialized [2018-06-24 21:24:17,152 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:17" (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 21:24:17,164 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:24:17,164 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:24:17,164 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:24:17,164 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:24:17,164 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:24:17,164 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 21:24:17,330 INFO ]: Using library mode [2018-06-24 21:24:17,331 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:24:17 BoogieIcfgContainer [2018-06-24 21:24:17,331 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:24:17,331 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:24:17,331 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:24:17,332 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:24:17,333 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:24:17" (1/1) ... [2018-06-24 21:24:17,347 INFO ]: Initial Icfg 14 locations, 17 edges [2018-06-24 21:24:17,349 INFO ]: Using Remove infeasible edges [2018-06-24 21:24:17,349 INFO ]: Using Maximize final states [2018-06-24 21:24:17,350 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:24:17,350 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:24:17,352 INFO ]: Using Remove sink states [2018-06-24 21:24:17,353 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:24:17,353 INFO ]: Using Use SBE [2018-06-24 21:24:17,358 INFO ]: SBE split 0 edges [2018-06-24 21:24:17,366 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:24:17,367 INFO ]: 0 new accepting states [2018-06-24 21:24:17,529 INFO ]: Removed 15 edges and 5 locations by large block encoding [2018-06-24 21:24:17,531 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:24:17,532 INFO ]: Removed 1 edges and 0 locations because of local infeasibility [2018-06-24 21:24:17,533 INFO ]: 0 new accepting states [2018-06-24 21:24:17,533 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:24:17,533 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:24:17,533 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:24:17,533 INFO ]: 0 new accepting states [2018-06-24 21:24:17,534 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:24:17,534 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:24:17,534 INFO ]: Encoded RCFG 7 locations, 9 edges [2018-06-24 21:24:17,534 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:24:17 BasicIcfg [2018-06-24 21:24:17,534 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:24:17,535 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:24:17,535 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:24:17,538 INFO ]: TraceAbstraction initialized [2018-06-24 21:24:17,538 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:24:17" (1/4) ... [2018-06-24 21:24:17,539 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4840fc7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:24:17, skipping insertion in model container [2018-06-24 21:24:17,539 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:17" (2/4) ... [2018-06-24 21:24:17,540 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4840fc7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:24:17, skipping insertion in model container [2018-06-24 21:24:17,540 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:24:17" (3/4) ... [2018-06-24 21:24:17,540 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4840fc7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:24:17, skipping insertion in model container [2018-06-24 21:24:17,540 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:24:17" (4/4) ... [2018-06-24 21:24:17,542 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:24:17,551 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:24:17,560 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:24:17,601 INFO ]: Using default assertion order modulation [2018-06-24 21:24:17,601 INFO ]: Interprodecural is true [2018-06-24 21:24:17,601 INFO ]: Hoare is false [2018-06-24 21:24:17,601 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:24:17,601 INFO ]: Backedges is TWOTRACK [2018-06-24 21:24:17,601 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:24:17,601 INFO ]: Difference is false [2018-06-24 21:24:17,601 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:24:17,601 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:24:17,610 INFO ]: Start isEmpty. Operand 7 states. [2018-06-24 21:24:17,620 INFO ]: Finished isEmpty. Found accepting run of length 5 [2018-06-24 21:24:17,620 INFO ]: Found error trace [2018-06-24 21:24:17,621 INFO ]: trace histogram [1, 1, 1, 1] [2018-06-24 21:24:17,621 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:24:17,626 INFO ]: Analyzing trace with hash 1098900, now seen corresponding path program 1 times [2018-06-24 21:24:17,627 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:24:17,628 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:24:17,663 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:24:17,664 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:24:17,664 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:24:17,698 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:24:17,749 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:24:17,751 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:24:17,751 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:24:17,752 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:24:17,764 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:24:17,764 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:24:17,766 INFO ]: Start difference. First operand 7 states. Second operand 3 states. [2018-06-24 21:24:17,853 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:24:17,853 INFO ]: Finished difference Result 11 states and 15 transitions. [2018-06-24 21:24:17,854 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:24:17,855 INFO ]: Start accepts. Automaton has 3 states. Word has length 4 [2018-06-24 21:24:17,855 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:24:17,862 INFO ]: With dead ends: 11 [2018-06-24 21:24:17,862 INFO ]: Without dead ends: 11 [2018-06-24 21:24:17,864 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 21:24:17,877 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-24 21:24:17,900 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-24 21:24:17,901 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-24 21:24:17,901 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2018-06-24 21:24:17,906 INFO ]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 4 [2018-06-24 21:24:17,907 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:24:17,907 INFO ]: Abstraction has 11 states and 15 transitions. [2018-06-24 21:24:17,907 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:24:17,907 INFO ]: Start isEmpty. Operand 11 states and 15 transitions. [2018-06-24 21:24:17,908 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-24 21:24:17,909 INFO ]: Found error trace [2018-06-24 21:24:17,909 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:24:17,910 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:24:17,910 INFO ]: Analyzing trace with hash -1546356820, now seen corresponding path program 1 times [2018-06-24 21:24:17,910 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:24:17,910 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:24:17,911 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:24:17,911 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:24:17,911 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:24:17,932 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:24:18,237 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:24:18,237 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:24:18,237 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-24 21:24:18,238 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:24:18,239 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:24:18,239 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:24:18,239 INFO ]: Start difference. First operand 11 states and 15 transitions. Second operand 5 states. [2018-06-24 21:24:18,438 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:24:18,439 INFO ]: Finished difference Result 8 states and 11 transitions. [2018-06-24 21:24:18,439 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 21:24:18,439 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-24 21:24:18,439 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:24:18,439 INFO ]: With dead ends: 8 [2018-06-24 21:24:18,439 INFO ]: Without dead ends: 0 [2018-06-24 21:24:18,440 INFO ]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:24:18,440 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:24:18,440 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:24:18,440 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:24:18,440 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:24:18,440 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-06-24 21:24:18,440 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:24:18,440 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:24:18,440 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:24:18,440 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:24:18,440 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:24:18,442 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:24:18,444 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:24:18 BasicIcfg [2018-06-24 21:24:18,444 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:24:18,447 INFO ]: Toolchain (without parser) took 1393.50 ms. Allocated memory is still 309.3 MB. Free memory was 265.9 MB in the beginning and 223.8 MB in the end (delta: 42.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:18,449 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:24:18,449 INFO ]: ChcToBoogie took 61.70 ms. Allocated memory is still 309.3 MB. Free memory was 265.9 MB in the beginning and 263.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:18,450 INFO ]: Boogie Preprocessor took 31.06 ms. Allocated memory is still 309.3 MB. Free memory was 263.9 MB in the beginning and 261.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:18,450 INFO ]: RCFGBuilder took 180.22 ms. Allocated memory is still 309.3 MB. Free memory was 261.8 MB in the beginning and 255.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:18,451 INFO ]: BlockEncodingV2 took 203.14 ms. Allocated memory is still 309.3 MB. Free memory was 255.8 MB in the beginning and 249.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:18,452 INFO ]: TraceAbstraction took 908.77 ms. Allocated memory is still 309.3 MB. Free memory was 249.8 MB in the beginning and 223.8 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:18,457 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 14 locations, 17 edges - StatisticsResult: Encoded RCFG 7 locations, 9 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 61.70 ms. Allocated memory is still 309.3 MB. Free memory was 265.9 MB in the beginning and 263.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 31.06 ms. Allocated memory is still 309.3 MB. Free memory was 263.9 MB in the beginning and 261.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 180.22 ms. Allocated memory is still 309.3 MB. Free memory was 261.8 MB in the beginning and 255.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 203.14 ms. Allocated memory is still 309.3 MB. Free memory was 255.8 MB in the beginning and 249.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 908.77 ms. Allocated memory is still 309.3 MB. Free memory was 249.8 MB in the beginning and 223.8 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 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, 7 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 4 SDslu, 8 SDs, 0 SdLazy, 19 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 0.3s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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_intro.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-24-18-474.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum_intro.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-24-18-474.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum_intro.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-24-18-474.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum_intro.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-24-18-474.csv Received shutdown request...