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/vmt-chc-benchmarks/ctigar/bkley.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 00:45:46,111 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 00:45:46,116 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 00:45:46,131 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 00:45:46,131 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 00:45:46,134 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 00:45:46,135 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 00:45:46,137 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 00:45:46,138 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 00:45:46,139 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 00:45:46,140 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 00:45:46,141 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 00:45:46,141 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 00:45:46,142 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 00:45:46,143 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 00:45:46,146 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 00:45:46,147 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 00:45:46,149 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 00:45:46,159 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 00:45:46,160 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 00:45:46,161 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 00:45:46,163 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-25 00:45:46,172 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 00:45:46,172 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 00:45:46,173 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 00:45:46,174 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 00:45:46,174 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 00:45:46,175 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 00:45:46,175 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 00:45:46,188 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 00:45:46,188 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 00:45:46,189 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 00:45:46,189 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 00:45:46,190 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 00:45:46,190 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 00:45:46,190 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 00:45:46,190 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 00:45:46,191 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 00:45:46,193 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 00:45:46,193 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 00:45:46,194 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 00:45:46,194 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 00:45:46,194 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 00:45:46,194 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 00:45:46,194 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 00:45:46,194 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 00:45:46,195 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 00:45:46,195 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 00:45:46,195 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 00:45:46,195 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 00:45:46,197 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 00:45:46,201 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 00:45:46,250 INFO ]: Repository-Root is: /tmp [2018-06-25 00:45:46,267 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 00:45:46,274 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 00:45:46,276 INFO ]: Initializing SmtParser... [2018-06-25 00:45:46,276 INFO ]: SmtParser initialized [2018-06-25 00:45:46,277 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/bkley.c.smt2 [2018-06-25 00:45:46,278 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 [2018-06-25 00:45:46,368 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/bkley.c.smt2 unknown [2018-06-25 00:45:46,745 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/bkley.c.smt2 [2018-06-25 00:45:46,750 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 00:45:46,756 INFO ]: Walking toolchain with 5 elements. [2018-06-25 00:45:46,756 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 00:45:46,756 INFO ]: Initializing ChcToBoogie... [2018-06-25 00:45:46,757 INFO ]: ChcToBoogie initialized [2018-06-25 00:45:46,760 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:45:46" (1/1) ... [2018-06-25 00:45:46,824 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:45:46 Unit [2018-06-25 00:45:46,824 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 00:45:46,825 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 00:45:46,825 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 00:45:46,825 INFO ]: Boogie Preprocessor initialized [2018-06-25 00:45:46,843 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:45:46" (1/1) ... [2018-06-25 00:45:46,843 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:45:46" (1/1) ... [2018-06-25 00:45:46,849 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:45:46" (1/1) ... [2018-06-25 00:45:46,849 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:45:46" (1/1) ... [2018-06-25 00:45:46,860 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:45:46" (1/1) ... [2018-06-25 00:45:46,862 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:45:46" (1/1) ... [2018-06-25 00:45:46,864 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:45:46" (1/1) ... [2018-06-25 00:45:46,866 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 00:45:46,867 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 00:45:46,867 INFO ]: Initializing RCFGBuilder... [2018-06-25 00:45:46,867 INFO ]: RCFGBuilder initialized [2018-06-25 00:45:46,868 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:45:46" (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 [2018-06-25 00:45:46,883 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 00:45:46,883 INFO ]: Found specification of procedure gotoProc [2018-06-25 00:45:46,883 INFO ]: Found implementation of procedure gotoProc [2018-06-25 00:45:46,883 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 00:45:46,883 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 00:45:46,883 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 00:45:47,164 INFO ]: Using library mode [2018-06-25 00:45:47,165 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:45:47 BoogieIcfgContainer [2018-06-25 00:45:47,165 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 00:45:47,165 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-25 00:45:47,165 INFO ]: Initializing BlockEncodingV2... [2018-06-25 00:45:47,166 INFO ]: BlockEncodingV2 initialized [2018-06-25 00:45:47,169 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:45:47" (1/1) ... [2018-06-25 00:45:47,184 INFO ]: Initial Icfg 10 locations, 10 edges [2018-06-25 00:45:47,186 INFO ]: Using Remove infeasible edges [2018-06-25 00:45:47,186 INFO ]: Using Maximize final states [2018-06-25 00:45:47,186 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-25 00:45:47,187 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-25 00:45:47,188 INFO ]: Using Remove sink states [2018-06-25 00:45:47,189 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-25 00:45:47,189 INFO ]: Using Use SBE [2018-06-25 00:45:47,194 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 00:45:47,249 WARN ]: aborting because of expected exponential blowup for input size 62 [2018-06-25 00:45:47,257 WARN ]: aborting because of expected exponential blowup for input size 62 [2018-06-25 00:45:47,257 INFO ]: SBE split 1 edges [2018-06-25 00:45:47,262 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-25 00:45:47,265 INFO ]: 0 new accepting states [2018-06-25 00:45:47,338 INFO ]: Removed 6 edges and 2 locations by large block encoding [2018-06-25 00:45:47,340 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-25 00:45:47,345 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-25 00:45:47,345 INFO ]: 0 new accepting states [2018-06-25 00:45:47,345 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-25 00:45:47,345 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-25 00:45:47,345 INFO ]: Encoded RCFG 6 locations, 8 edges [2018-06-25 00:45:47,346 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 25.06 12:45:47 BasicIcfg [2018-06-25 00:45:47,346 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-25 00:45:47,347 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 00:45:47,347 INFO ]: Initializing TraceAbstraction... [2018-06-25 00:45:47,350 INFO ]: TraceAbstraction initialized [2018-06-25 00:45:47,350 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:45:46" (1/4) ... [2018-06-25 00:45:47,351 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebeb67e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 12:45:47, skipping insertion in model container [2018-06-25 00:45:47,351 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:45:46" (2/4) ... [2018-06-25 00:45:47,351 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebeb67e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 12:45:47, skipping insertion in model container [2018-06-25 00:45:47,351 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:45:47" (3/4) ... [2018-06-25 00:45:47,351 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebeb67e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 12:45:47, skipping insertion in model container [2018-06-25 00:45:47,352 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 25.06 12:45:47" (4/4) ... [2018-06-25 00:45:47,353 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-25 00:45:47,362 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 00:45:47,368 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 00:45:47,404 INFO ]: Using default assertion order modulation [2018-06-25 00:45:47,404 INFO ]: Interprodecural is true [2018-06-25 00:45:47,404 INFO ]: Hoare is false [2018-06-25 00:45:47,404 INFO ]: Compute interpolants for FPandBP [2018-06-25 00:45:47,404 INFO ]: Backedges is TWOTRACK [2018-06-25 00:45:47,404 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 00:45:47,405 INFO ]: Difference is false [2018-06-25 00:45:47,405 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 00:45:47,405 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 00:45:47,420 INFO ]: Start isEmpty. Operand 6 states. [2018-06-25 00:45:47,433 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-25 00:45:47,433 INFO ]: Found error trace [2018-06-25 00:45:47,434 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-25 00:45:47,434 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 00:45:47,440 INFO ]: Analyzing trace with hash 35496740, now seen corresponding path program 1 times [2018-06-25 00:45:47,441 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 00:45:47,442 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 00:45:47,474 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:45:47,474 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 00:45:47,474 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:45:47,518 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:45:47,601 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 00:45:47,604 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 00:45:47,604 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 00:45:47,606 INFO ]: Interpolant automaton has 3 states [2018-06-25 00:45:47,620 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 00:45:47,621 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 00:45:47,623 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-25 00:45:47,684 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 00:45:47,684 INFO ]: Finished difference Result 7 states and 9 transitions. [2018-06-25 00:45:47,688 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 00:45:47,689 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-25 00:45:47,689 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 00:45:47,699 INFO ]: With dead ends: 7 [2018-06-25 00:45:47,699 INFO ]: Without dead ends: 7 [2018-06-25 00:45:47,700 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 [2018-06-25 00:45:47,717 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-25 00:45:47,745 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-25 00:45:47,746 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-25 00:45:47,747 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-06-25 00:45:47,748 INFO ]: Start accepts. Automaton has 7 states and 9 transitions. Word has length 5 [2018-06-25 00:45:47,748 INFO ]: Finished accepts. word is rejected. [2018-06-25 00:45:47,748 INFO ]: Abstraction has 7 states and 9 transitions. [2018-06-25 00:45:47,748 INFO ]: Interpolant automaton has 3 states. [2018-06-25 00:45:47,748 INFO ]: Start isEmpty. Operand 7 states and 9 transitions. [2018-06-25 00:45:47,749 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-25 00:45:47,749 INFO ]: Found error trace [2018-06-25 00:45:47,749 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-25 00:45:47,749 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 00:45:47,749 INFO ]: Analyzing trace with hash 1099988752, now seen corresponding path program 1 times [2018-06-25 00:45:47,749 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 00:45:47,749 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 00:45:47,750 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:45:47,750 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 00:45:47,750 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:45:47,829 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:45:48,202 WARN ]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 00:45:48,203 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 00:45:48,203 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 00:45:48,203 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 [2018-06-25 00:45:48,212 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 00:45:48,281 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:45:48,291 INFO ]: Computing forward predicates... [2018-06-25 00:45:49,552 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 00:45:49,585 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 00:45:49,585 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 00:45:49,586 INFO ]: Interpolant automaton has 5 states [2018-06-25 00:45:49,586 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 00:45:49,586 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 00:45:49,586 INFO ]: Start difference. First operand 7 states and 9 transitions. Second operand 5 states. [2018-06-25 00:45:49,712 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 00:45:49,712 INFO ]: Finished difference Result 9 states and 11 transitions. [2018-06-25 00:45:49,713 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 00:45:49,713 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-25 00:45:49,713 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 00:45:49,713 INFO ]: With dead ends: 9 [2018-06-25 00:45:49,713 INFO ]: Without dead ends: 9 [2018-06-25 00:45:49,714 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-25 00:45:49,714 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 00:45:49,715 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 00:45:49,715 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 00:45:49,715 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-06-25 00:45:49,715 INFO ]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 6 [2018-06-25 00:45:49,715 INFO ]: Finished accepts. word is rejected. [2018-06-25 00:45:49,715 INFO ]: Abstraction has 9 states and 11 transitions. [2018-06-25 00:45:49,716 INFO ]: Interpolant automaton has 5 states. [2018-06-25 00:45:49,716 INFO ]: Start isEmpty. Operand 9 states and 11 transitions. [2018-06-25 00:45:49,716 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 00:45:49,716 INFO ]: Found error trace [2018-06-25 00:45:49,716 INFO ]: trace histogram [3, 1, 1, 1, 1, 1] [2018-06-25 00:45:49,716 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 00:45:49,716 INFO ]: Analyzing trace with hash 514109840, now seen corresponding path program 2 times [2018-06-25 00:45:49,716 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 00:45:49,716 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 00:45:49,717 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:45:49,717 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 00:45:49,717 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:45:49,827 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:45:50,120 WARN ]: Spent 127.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2018-06-25 00:45:50,217 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 00:45:50,217 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 00:45:50,217 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 [2018-06-25 00:45:50,224 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 00:45:50,301 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 00:45:50,301 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:45:50,306 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-25 00:46:58,571 INFO ]: Timeout while computing interpolants [2018-06-25 00:46:58,772 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 00:46:58,772 WARN ]: Verification canceled [2018-06-25 00:46:58,774 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-25 00:46:58,775 WARN ]: Timeout [2018-06-25 00:46:58,775 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 12:46:58 BasicIcfg [2018-06-25 00:46:58,775 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 00:46:58,779 INFO ]: Toolchain (without parser) took 72028.64 ms. Allocated memory was 304.1 MB in the beginning and 1.2 GB in the end (delta: 937.4 MB). Free memory was 249.5 MB in the beginning and 678.6 MB in the end (delta: -429.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. [2018-06-25 00:46:58,780 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 304.1 MB. Free memory is still 267.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 00:46:58,781 INFO ]: ChcToBoogie took 68.35 ms. Allocated memory is still 304.1 MB. Free memory was 249.5 MB in the beginning and 247.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 00:46:58,781 INFO ]: Boogie Preprocessor took 41.53 ms. Allocated memory is still 304.1 MB. Free memory was 247.5 MB in the beginning and 245.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 00:46:58,784 INFO ]: RCFGBuilder took 297.76 ms. Allocated memory is still 304.1 MB. Free memory was 245.5 MB in the beginning and 231.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. [2018-06-25 00:46:58,784 INFO ]: BlockEncodingV2 took 180.90 ms. Allocated memory is still 304.1 MB. Free memory was 231.5 MB in the beginning and 223.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-25 00:46:58,785 INFO ]: TraceAbstraction took 71428.72 ms. Allocated memory was 304.1 MB in the beginning and 1.2 GB in the end (delta: 937.4 MB). Free memory was 222.6 MB in the beginning and 678.6 MB in the end (delta: -456.0 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. [2018-06-25 00:46:58,796 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 10 edges - StatisticsResult: Encoded RCFG 6 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 304.1 MB. Free memory is still 267.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 68.35 ms. Allocated memory is still 304.1 MB. Free memory was 249.5 MB in the beginning and 247.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 41.53 ms. Allocated memory is still 304.1 MB. Free memory was 247.5 MB in the beginning and 245.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 297.76 ms. Allocated memory is still 304.1 MB. Free memory was 245.5 MB in the beginning and 231.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 180.90 ms. Allocated memory is still 304.1 MB. Free memory was 231.5 MB in the beginning and 223.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 71428.72 ms. Allocated memory was 304.1 MB in the beginning and 1.2 GB in the end (delta: 937.4 MB). Free memory was 222.6 MB in the beginning and 678.6 MB in the end (delta: -456.0 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 9 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 21 quantified variables from 41 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. TIMEOUT Result, 71.3s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 12 SDs, 0 SdLazy, 10 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, 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, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 136 SizeOfPredicates, 6 NumberOfNonLiveVariables, 120 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bkley.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-25_00-46-58-813.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bkley.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-25_00-46-58-813.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bkley.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-25_00-46-58-813.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bkley.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_00-46-58-813.csv Completed graceful shutdown