java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/mc91_98.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:22:48,892 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:22:48,894 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:22:48,908 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:22:48,908 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:22:48,909 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:22:48,910 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:22:48,911 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:22:48,913 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:22:48,913 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:22:48,915 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:22:48,915 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:22:48,916 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:22:48,917 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:22:48,920 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:22:48,921 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:22:48,922 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:22:48,926 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:22:48,927 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:22:48,928 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:22:48,929 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:22:48,932 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-24 21:22:48,940 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:22:48,953 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:22:48,954 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:22:48,954 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:22:48,954 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:22:48,955 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:22:48,955 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:22:48,955 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:22:48,956 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:22:48,956 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:22:48,956 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:22:48,956 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:22:48,956 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:22:48,957 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:22:48,957 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:22:48,957 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:22:48,957 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:22:48,957 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:22:48,958 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:22:48,958 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:22:48,958 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:22:48,958 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:22:48,959 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:22:48,960 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:22:49,010 INFO ]: Repository-Root is: /tmp [2018-06-24 21:22:49,030 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:22:49,036 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:22:49,038 INFO ]: Initializing SmtParser... [2018-06-24 21:22:49,038 INFO ]: SmtParser initialized [2018-06-24 21:22:49,039 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/mc91_98.smt2 [2018-06-24 21:22:49,041 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 21:22:49,131 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/mc91_98.smt2 unknown [2018-06-24 21:22:49,291 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/mc91_98.smt2 [2018-06-24 21:22:49,300 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:22:49,309 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:22:49,310 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:22:49,310 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:22:49,310 INFO ]: ChcToBoogie initialized [2018-06-24 21:22:49,313 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:22:49" (1/1) ... [2018-06-24 21:22:49,364 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:49 Unit [2018-06-24 21:22:49,364 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:22:49,365 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:22:49,365 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:22:49,365 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:22:49,386 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:49" (1/1) ... [2018-06-24 21:22:49,387 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:49" (1/1) ... [2018-06-24 21:22:49,392 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:49" (1/1) ... [2018-06-24 21:22:49,392 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:49" (1/1) ... [2018-06-24 21:22:49,394 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:49" (1/1) ... [2018-06-24 21:22:49,397 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:49" (1/1) ... [2018-06-24 21:22:49,398 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:49" (1/1) ... [2018-06-24 21:22:49,400 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:22:49,401 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:22:49,401 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:22:49,401 INFO ]: RCFGBuilder initialized [2018-06-24 21:22:49,401 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:49" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-24 21:22:49,421 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:22:49,421 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:22:49,421 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:22:49,421 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:22:49,421 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:22:49,421 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 21:22:49,647 INFO ]: Using library mode [2018-06-24 21:22:49,652 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:22:49 BoogieIcfgContainer [2018-06-24 21:22:49,652 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:22:49,653 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:22:49,653 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:22:49,654 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:22:49,655 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:22:49" (1/1) ... [2018-06-24 21:22:49,689 INFO ]: Initial Icfg 13 locations, 16 edges [2018-06-24 21:22:49,690 INFO ]: Using Remove infeasible edges [2018-06-24 21:22:49,691 INFO ]: Using Maximize final states [2018-06-24 21:22:49,691 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:22:49,691 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:22:49,693 INFO ]: Using Remove sink states [2018-06-24 21:22:49,694 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:22:49,694 INFO ]: Using Use SBE [2018-06-24 21:22:49,700 INFO ]: SBE split 0 edges [2018-06-24 21:22:49,710 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:22:49,712 INFO ]: 0 new accepting states [2018-06-24 21:22:49,750 INFO ]: Removed 7 edges and 3 locations by large block encoding [2018-06-24 21:22:49,752 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:22:49,753 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:22:49,753 INFO ]: 0 new accepting states [2018-06-24 21:22:49,754 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:22:49,754 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:22:49,754 INFO ]: Encoded RCFG 8 locations, 10 edges [2018-06-24 21:22:49,754 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:22:49 BasicIcfg [2018-06-24 21:22:49,754 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:22:49,756 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:22:49,756 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:22:49,758 INFO ]: TraceAbstraction initialized [2018-06-24 21:22:49,758 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:22:49" (1/4) ... [2018-06-24 21:22:49,759 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272a5846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:22:49, skipping insertion in model container [2018-06-24 21:22:49,759 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:49" (2/4) ... [2018-06-24 21:22:49,760 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272a5846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:22:49, skipping insertion in model container [2018-06-24 21:22:49,760 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:22:49" (3/4) ... [2018-06-24 21:22:49,760 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272a5846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:22:49, skipping insertion in model container [2018-06-24 21:22:49,760 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:22:49" (4/4) ... [2018-06-24 21:22:49,762 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:22:49,771 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:22:49,778 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:22:49,818 INFO ]: Using default assertion order modulation [2018-06-24 21:22:49,818 INFO ]: Interprodecural is true [2018-06-24 21:22:49,818 INFO ]: Hoare is false [2018-06-24 21:22:49,818 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:22:49,818 INFO ]: Backedges is TWOTRACK [2018-06-24 21:22:49,818 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:22:49,818 INFO ]: Difference is false [2018-06-24 21:22:49,818 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:22:49,818 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:22:49,831 INFO ]: Start isEmpty. Operand 8 states. [2018-06-24 21:22:49,853 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:22:49,853 INFO ]: Found error trace [2018-06-24 21:22:49,853 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:22:49,854 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:49,859 INFO ]: Analyzing trace with hash 33771907, now seen corresponding path program 1 times [2018-06-24 21:22:49,860 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:49,861 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:49,900 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:49,900 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:49,900 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:49,932 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:49,988 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:22:49,990 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:22:49,990 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:22:49,991 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:22:50,003 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:22:50,004 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:22:50,007 INFO ]: Start difference. First operand 8 states. Second operand 3 states. [2018-06-24 21:22:50,104 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:50,104 INFO ]: Finished difference Result 13 states and 17 transitions. [2018-06-24 21:22:50,105 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:22:50,106 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:22:50,106 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:50,114 INFO ]: With dead ends: 13 [2018-06-24 21:22:50,114 INFO ]: Without dead ends: 13 [2018-06-24 21:22:50,115 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 21:22:50,128 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-24 21:22:50,152 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-24 21:22:50,154 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-24 21:22:50,155 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2018-06-24 21:22:50,156 INFO ]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 5 [2018-06-24 21:22:50,157 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:50,157 INFO ]: Abstraction has 13 states and 17 transitions. [2018-06-24 21:22:50,157 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:22:50,157 INFO ]: Start isEmpty. Operand 13 states and 17 transitions. [2018-06-24 21:22:50,158 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:22:50,158 INFO ]: Found error trace [2018-06-24 21:22:50,158 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:22:50,158 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:50,158 INFO ]: Analyzing trace with hash 33801698, now seen corresponding path program 1 times [2018-06-24 21:22:50,158 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:50,158 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:50,160 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:50,160 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:50,160 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:50,168 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:50,242 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:22:50,242 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:22:50,242 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:22:50,243 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:22:50,243 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:22:50,243 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:22:50,244 INFO ]: Start difference. First operand 13 states and 17 transitions. Second operand 3 states. [2018-06-24 21:22:50,330 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:50,330 INFO ]: Finished difference Result 19 states and 25 transitions. [2018-06-24 21:22:50,331 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:22:50,331 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:22:50,331 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:50,331 INFO ]: With dead ends: 19 [2018-06-24 21:22:50,331 INFO ]: Without dead ends: 19 [2018-06-24 21:22:50,332 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 21:22:50,332 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-24 21:22:50,336 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-06-24 21:22:50,336 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-24 21:22:50,337 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2018-06-24 21:22:50,337 INFO ]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 5 [2018-06-24 21:22:50,337 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:50,337 INFO ]: Abstraction has 15 states and 19 transitions. [2018-06-24 21:22:50,337 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:22:50,337 INFO ]: Start isEmpty. Operand 15 states and 19 transitions. [2018-06-24 21:22:50,337 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-24 21:22:50,337 INFO ]: Found error trace [2018-06-24 21:22:50,337 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:22:50,338 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:50,338 INFO ]: Analyzing trace with hash 695440575, now seen corresponding path program 1 times [2018-06-24 21:22:50,338 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:50,338 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:50,339 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:50,339 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:50,339 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:50,359 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:50,626 INFO ]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:22:50,626 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:50,626 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 21:22:50,640 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:50,670 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:50,676 INFO ]: Computing forward predicates... [2018-06-24 21:22:50,835 INFO ]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:22:50,855 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:50,855 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-06-24 21:22:50,855 INFO ]: Interpolant automaton has 9 states [2018-06-24 21:22:50,855 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-24 21:22:50,856 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-24 21:22:50,856 INFO ]: Start difference. First operand 15 states and 19 transitions. Second operand 9 states. [2018-06-24 21:22:51,446 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:51,446 INFO ]: Finished difference Result 31 states and 47 transitions. [2018-06-24 21:22:51,446 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-24 21:22:51,446 INFO ]: Start accepts. Automaton has 9 states. Word has length 11 [2018-06-24 21:22:51,446 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:51,449 INFO ]: With dead ends: 31 [2018-06-24 21:22:51,449 INFO ]: Without dead ends: 31 [2018-06-24 21:22:51,450 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-06-24 21:22:51,450 INFO ]: Start minimizeSevpa. Operand 31 states. [2018-06-24 21:22:51,456 INFO ]: Finished minimizeSevpa. Reduced states from 31 to 23. [2018-06-24 21:22:51,457 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-24 21:22:51,458 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2018-06-24 21:22:51,458 INFO ]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 11 [2018-06-24 21:22:51,458 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:51,458 INFO ]: Abstraction has 23 states and 33 transitions. [2018-06-24 21:22:51,458 INFO ]: Interpolant automaton has 9 states. [2018-06-24 21:22:51,458 INFO ]: Start isEmpty. Operand 23 states and 33 transitions. [2018-06-24 21:22:51,459 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-24 21:22:51,459 INFO ]: Found error trace [2018-06-24 21:22:51,459 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-06-24 21:22:51,459 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:51,459 INFO ]: Analyzing trace with hash 107953538, now seen corresponding path program 2 times [2018-06-24 21:22:51,459 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:51,459 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:51,460 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:51,460 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:51,460 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:51,482 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:51,801 INFO ]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:22:51,801 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:51,801 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 21:22:51,814 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:22:51,844 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:22:51,844 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:51,846 INFO ]: Computing forward predicates... [2018-06-24 21:22:52,461 INFO ]: Checked inductivity of 18 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-24 21:22:52,481 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:52,481 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2018-06-24 21:22:52,481 INFO ]: Interpolant automaton has 20 states [2018-06-24 21:22:52,481 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-24 21:22:52,482 INFO ]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2018-06-24 21:22:52,482 INFO ]: Start difference. First operand 23 states and 33 transitions. Second operand 20 states. [2018-06-24 21:22:54,814 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:54,814 INFO ]: Finished difference Result 88 states and 163 transitions. [2018-06-24 21:22:54,814 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-06-24 21:22:54,814 INFO ]: Start accepts. Automaton has 20 states. Word has length 17 [2018-06-24 21:22:54,814 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:54,817 INFO ]: With dead ends: 88 [2018-06-24 21:22:54,817 INFO ]: Without dead ends: 65 [2018-06-24 21:22:54,819 INFO ]: 0 DeclaredPredicates, 93 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1400 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=845, Invalid=4411, Unknown=0, NotChecked=0, Total=5256 [2018-06-24 21:22:54,820 INFO ]: Start minimizeSevpa. Operand 65 states. [2018-06-24 21:22:54,832 INFO ]: Finished minimizeSevpa. Reduced states from 65 to 36. [2018-06-24 21:22:54,832 INFO ]: Start removeUnreachable. Operand 36 states. [2018-06-24 21:22:54,834 INFO ]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2018-06-24 21:22:54,834 INFO ]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 17 [2018-06-24 21:22:54,834 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:54,834 INFO ]: Abstraction has 36 states and 56 transitions. [2018-06-24 21:22:54,834 INFO ]: Interpolant automaton has 20 states. [2018-06-24 21:22:54,834 INFO ]: Start isEmpty. Operand 36 states and 56 transitions. [2018-06-24 21:22:54,835 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-24 21:22:54,835 INFO ]: Found error trace [2018-06-24 21:22:54,835 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-06-24 21:22:54,835 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:54,836 INFO ]: Analyzing trace with hash -1340995108, now seen corresponding path program 3 times [2018-06-24 21:22:54,836 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:54,836 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:54,837 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:54,837 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:22:54,837 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:54,851 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:54,937 INFO ]: Checked inductivity of 18 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-24 21:22:54,937 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:54,937 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 21:22:54,946 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-24 21:22:54,960 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-24 21:22:54,960 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:54,962 INFO ]: Computing forward predicates... [2018-06-24 21:22:54,998 INFO ]: Checked inductivity of 18 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-24 21:22:55,017 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:55,017 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-06-24 21:22:55,018 INFO ]: Interpolant automaton has 12 states [2018-06-24 21:22:55,018 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-24 21:22:55,018 INFO ]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-06-24 21:22:55,018 INFO ]: Start difference. First operand 36 states and 56 transitions. Second operand 12 states. [2018-06-24 21:22:55,165 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:55,165 INFO ]: Finished difference Result 62 states and 97 transitions. [2018-06-24 21:22:55,167 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-24 21:22:55,167 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-24 21:22:55,167 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:55,169 INFO ]: With dead ends: 62 [2018-06-24 21:22:55,169 INFO ]: Without dead ends: 62 [2018-06-24 21:22:55,170 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2018-06-24 21:22:55,170 INFO ]: Start minimizeSevpa. Operand 62 states. [2018-06-24 21:22:55,179 INFO ]: Finished minimizeSevpa. Reduced states from 62 to 40. [2018-06-24 21:22:55,179 INFO ]: Start removeUnreachable. Operand 40 states. [2018-06-24 21:22:55,180 INFO ]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2018-06-24 21:22:55,180 INFO ]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 17 [2018-06-24 21:22:55,181 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:55,181 INFO ]: Abstraction has 40 states and 66 transitions. [2018-06-24 21:22:55,181 INFO ]: Interpolant automaton has 12 states. [2018-06-24 21:22:55,181 INFO ]: Start isEmpty. Operand 40 states and 66 transitions. [2018-06-24 21:22:55,183 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-24 21:22:55,183 INFO ]: Found error trace [2018-06-24 21:22:55,183 INFO ]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2018-06-24 21:22:55,183 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:55,183 INFO ]: Analyzing trace with hash 2136569145, now seen corresponding path program 4 times [2018-06-24 21:22:55,183 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:55,183 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:55,184 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:55,184 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:22:55,184 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:55,204 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:55,299 INFO ]: Checked inductivity of 39 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-06-24 21:22:55,299 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:55,299 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-24 21:22:55,311 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:22:55,332 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-24 21:22:55,332 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:55,335 INFO ]: Computing forward predicates... [2018-06-24 21:22:55,632 INFO ]: Checked inductivity of 39 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-06-24 21:22:55,657 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:55,657 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 18 [2018-06-24 21:22:55,657 INFO ]: Interpolant automaton has 18 states [2018-06-24 21:22:55,657 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-24 21:22:55,657 INFO ]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2018-06-24 21:22:55,657 INFO ]: Start difference. First operand 40 states and 66 transitions. Second operand 18 states. [2018-06-24 21:22:55,879 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:55,879 INFO ]: Finished difference Result 51 states and 74 transitions. [2018-06-24 21:22:55,879 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-24 21:22:55,879 INFO ]: Start accepts. Automaton has 18 states. Word has length 23 [2018-06-24 21:22:55,879 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:55,879 INFO ]: With dead ends: 51 [2018-06-24 21:22:55,879 INFO ]: Without dead ends: 0 [2018-06-24 21:22:55,880 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2018-06-24 21:22:55,880 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:22:55,880 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:22:55,880 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:22:55,880 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:22:55,880 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-06-24 21:22:55,880 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:55,880 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:22:55,880 INFO ]: Interpolant automaton has 18 states. [2018-06-24 21:22:55,880 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:22:55,880 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:22:55,882 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:22:55,884 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:22:55 BasicIcfg [2018-06-24 21:22:55,884 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:22:55,885 INFO ]: Toolchain (without parser) took 6584.30 ms. Allocated memory was 309.3 MB in the beginning and 382.2 MB in the end (delta: 72.9 MB). Free memory was 266.8 MB in the beginning and 310.5 MB in the end (delta: -43.7 MB). Peak memory consumption was 29.2 MB. Max. memory is 3.6 GB. [2018-06-24 21:22:55,886 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:22:55,887 INFO ]: ChcToBoogie took 54.81 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 21:22:55,887 INFO ]: Boogie Preprocessor took 35.01 ms. Allocated memory is still 309.3 MB. Free memory was 263.9 MB in the beginning and 262.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:22:55,888 INFO ]: RCFGBuilder took 251.76 ms. Allocated memory is still 309.3 MB. Free memory was 262.8 MB in the beginning and 255.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:22:55,888 INFO ]: BlockEncodingV2 took 101.61 ms. Allocated memory is still 309.3 MB. Free memory was 255.8 MB in the beginning and 252.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:22:55,889 INFO ]: TraceAbstraction took 6128.25 ms. Allocated memory was 309.3 MB in the beginning and 382.2 MB in the end (delta: 72.9 MB). Free memory was 252.8 MB in the beginning and 310.5 MB in the end (delta: -57.7 MB). Peak memory consumption was 15.2 MB. Max. memory is 3.6 GB. [2018-06-24 21:22:55,893 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 13 locations, 16 edges - StatisticsResult: Encoded RCFG 8 locations, 10 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 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 54.81 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 35.01 ms. Allocated memory is still 309.3 MB. Free memory was 263.9 MB in the beginning and 262.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 251.76 ms. Allocated memory is still 309.3 MB. Free memory was 262.8 MB in the beginning and 255.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 101.61 ms. Allocated memory is still 309.3 MB. Free memory was 255.8 MB in the beginning and 252.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 6128.25 ms. Allocated memory was 309.3 MB in the beginning and 382.2 MB in the end (delta: 72.9 MB). Free memory was 252.8 MB in the beginning and 310.5 MB in the end (delta: -57.7 MB). Peak memory consumption was 15.2 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, 8 locations, 1 error locations. SAFE Result, 6.0s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 3.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 50 SDtfs, 89 SDslu, 119 SDs, 0 SdLazy, 783 SolverSat, 342 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1534 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 63 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 8558 SizeOfPredicates, 45 NumberOfNonLiveVariables, 368 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 80/160 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_98.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-22-55-905.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_98.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-22-55-905.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_98.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-22-55-905.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_98.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-22-55-905.csv Received shutdown request...