java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.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/efm.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:21:36,166 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:21:36,168 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:21:36,179 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:21:36,180 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:21:36,181 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:21:36,182 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:21:36,184 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:21:36,185 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:21:36,186 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:21:36,187 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:21:36,187 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:21:36,188 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:21:36,189 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:21:36,190 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:21:36,191 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:21:36,193 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:21:36,195 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:21:36,196 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:21:36,197 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:21:36,198 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:21:36,201 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:21:36,201 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:21:36,201 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:21:36,202 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:21:36,203 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:21:36,204 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:21:36,205 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:21:36,206 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:21:36,206 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:21:36,207 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:21:36,207 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:21:36,208 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:21:36,209 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:21:36,209 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:21:36,210 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:21:36,222 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:21:36,223 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:21:36,223 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:21:36,223 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:21:36,224 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:21:36,225 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:21:36,225 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:21:36,225 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:21:36,225 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:21:36,225 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:21:36,226 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:21:36,226 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:21:36,226 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:21:36,226 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:21:36,226 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:21:36,226 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:21:36,227 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:21:36,228 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:21:36,228 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:21:36,284 INFO ]: Repository-Root is: /tmp [2018-06-22 05:21:36,301 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:21:36,308 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:21:36,309 INFO ]: Initializing SmtParser... [2018-06-22 05:21:36,310 INFO ]: SmtParser initialized [2018-06-22 05:21:36,310 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/efm.c.smt2 [2018-06-22 05:21:36,312 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 [2018-06-22 05:21:36,405 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/efm.c.smt2 unknown [2018-06-22 05:21:36,967 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/efm.c.smt2 [2018-06-22 05:21:36,971 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:21:36,981 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:21:36,982 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:21:36,982 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:21:36,982 INFO ]: ChcToBoogie initialized [2018-06-22 05:21:36,985 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:21:36" (1/1) ... [2018-06-22 05:21:37,051 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:21:37 Unit [2018-06-22 05:21:37,052 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:21:37,052 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:21:37,052 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:21:37,052 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:21:37,073 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:21:37" (1/1) ... [2018-06-22 05:21:37,073 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:21:37" (1/1) ... [2018-06-22 05:21:37,097 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:21:37" (1/1) ... [2018-06-22 05:21:37,097 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:21:37" (1/1) ... [2018-06-22 05:21:37,118 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:21:37" (1/1) ... [2018-06-22 05:21:37,119 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:21:37" (1/1) ... [2018-06-22 05:21:37,132 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:21:37" (1/1) ... [2018-06-22 05:21:37,137 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:21:37,138 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:21:37,138 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:21:37,138 INFO ]: RCFGBuilder initialized [2018-06-22 05:21:37,139 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:21:37" (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) [2018-06-22 05:21:37,153 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:21:37,153 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:21:37,153 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:21:37,153 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:21:37,153 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:21:37,153 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 [2018-06-22 05:21:37,495 INFO ]: Using library mode [2018-06-22 05:21:37,496 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:21:37 BoogieIcfgContainer [2018-06-22 05:21:37,496 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:21:37,498 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:21:37,498 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:21:37,505 INFO ]: TraceAbstraction initialized [2018-06-22 05:21:37,506 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:21:36" (1/3) ... [2018-06-22 05:21:37,506 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18008fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:21:37, skipping insertion in model container [2018-06-22 05:21:37,507 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:21:37" (2/3) ... [2018-06-22 05:21:37,507 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18008fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:21:37, skipping insertion in model container [2018-06-22 05:21:37,507 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:21:37" (3/3) ... [2018-06-22 05:21:37,509 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:21:37,528 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:21:37,542 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:21:37,580 INFO ]: Using default assertion order modulation [2018-06-22 05:21:37,581 INFO ]: Interprodecural is true [2018-06-22 05:21:37,581 INFO ]: Hoare is false [2018-06-22 05:21:37,581 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:21:37,581 INFO ]: Backedges is TWOTRACK [2018-06-22 05:21:37,581 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:21:37,581 INFO ]: Difference is false [2018-06-22 05:21:37,581 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:21:37,581 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:21:37,595 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:21:37,610 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:21:37,610 INFO ]: Found error trace [2018-06-22 05:21:37,612 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:21:37,612 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:21:37,617 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 05:21:37,618 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:21:37,619 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:21:37,654 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:21:37,654 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:21:37,654 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:21:37,715 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:21:37,854 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:21:37,857 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:21:37,857 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:21:37,859 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:21:37,873 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:21:37,873 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:21:37,875 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:21:37,950 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:21:37,950 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:21:37,952 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:21:37,953 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:21:37,953 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:21:37,963 INFO ]: With dead ends: 9 [2018-06-22 05:21:37,963 INFO ]: Without dead ends: 9 [2018-06-22 05:21:37,965 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 [2018-06-22 05:21:37,979 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:21:37,993 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:21:37,994 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:21:37,995 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:21:37,996 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:21:37,996 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:21:37,996 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:21:37,996 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:21:37,996 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:21:37,997 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:21:37,997 INFO ]: Found error trace [2018-06-22 05:21:37,997 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:21:37,997 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:21:37,997 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 05:21:37,997 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:21:37,997 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:21:37,998 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:21:37,998 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:21:37,998 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:21:38,148 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:21:38,373 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:21:38,373 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:21:38,373 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 [2018-06-22 05:21:38,381 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:21:38,471 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:21:38,482 INFO ]: Computing forward predicates... [2018-06-22 05:21:41,166 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:21:41,199 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:21:41,199 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 05:21:41,200 INFO ]: Interpolant automaton has 5 states [2018-06-22 05:21:41,200 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 05:21:41,200 INFO ]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:21:41,200 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 05:21:41,299 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:21:41,299 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 05:21:41,301 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 05:21:41,301 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 05:21:41,301 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:21:41,301 INFO ]: With dead ends: 10 [2018-06-22 05:21:41,301 INFO ]: Without dead ends: 10 [2018-06-22 05:21:41,302 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:21:41,302 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 05:21:41,303 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 05:21:41,303 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 05:21:41,303 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 05:21:41,304 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 05:21:41,304 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:21:41,304 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 05:21:41,304 INFO ]: Interpolant automaton has 5 states. [2018-06-22 05:21:41,304 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 05:21:41,304 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 05:21:41,304 INFO ]: Found error trace [2018-06-22 05:21:41,304 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:21:41,304 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:21:41,304 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 05:21:41,304 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:21:41,304 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:21:41,305 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:21:41,305 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:21:41,305 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:21:41,393 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:21:41,661 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 5 DAG size of output: 1 [2018-06-22 05:21:41,754 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:21:41,754 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:21:41,754 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 [2018-06-22 05:21:41,763 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 05:21:41,895 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:21:41,895 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:21:41,900 INFO ]: Computing forward predicates... [2018-06-22 05:21:50,740 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:21:50,761 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:21:50,802 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-22 05:21:50,802 INFO ]: Interpolant automaton has 6 states [2018-06-22 05:21:50,802 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 05:21:50,802 INFO ]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:21:50,802 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-06-22 05:21:50,874 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:21:50,874 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:21:50,874 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 05:21:50,874 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-22 05:21:50,875 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:21:50,875 INFO ]: With dead ends: 11 [2018-06-22 05:21:50,875 INFO ]: Without dead ends: 11 [2018-06-22 05:21:50,875 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-06-22 05:21:50,875 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:21:50,876 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:21:50,876 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:21:50,876 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:21:50,877 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 05:21:50,877 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:21:50,877 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:21:50,877 INFO ]: Interpolant automaton has 6 states. [2018-06-22 05:21:50,877 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:21:50,877 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:21:50,877 INFO ]: Found error trace [2018-06-22 05:21:50,877 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:21:50,877 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:21:50,877 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-22 05:21:50,877 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:21:50,877 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:21:50,878 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:21:50,878 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:21:50,878 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:21:51,006 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:21:51,422 WARN ]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 05:21:51,507 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:21:51,507 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:21:51,507 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 [2018-06-22 05:21:51,514 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:21:51,642 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 05:21:51,642 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:21:51,648 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 05:22:48,157 INFO ]: Timeout while computing interpolants [2018-06-22 05:22:48,358 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:22:48,358 WARN ]: Verification canceled [2018-06-22 05:22:48,365 WARN ]: Timeout [2018-06-22 05:22:48,366 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:22:48 BoogieIcfgContainer [2018-06-22 05:22:48,366 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:22:48,367 INFO ]: Toolchain (without parser) took 71394.82 ms. Allocated memory was 305.7 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 238.1 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 05:22:48,374 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 305.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:22:48,375 INFO ]: ChcToBoogie took 70.20 ms. Allocated memory is still 305.7 MB. Free memory was 237.2 MB in the beginning and 235.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:22:48,375 INFO ]: Boogie Preprocessor took 85.08 ms. Allocated memory is still 305.7 MB. Free memory was 235.2 MB in the beginning and 233.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:22:48,376 INFO ]: RCFGBuilder took 357.92 ms. Allocated memory is still 305.7 MB. Free memory was 233.2 MB in the beginning and 209.3 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 3.6 GB. [2018-06-22 05:22:48,376 INFO ]: TraceAbstraction took 70868.15 ms. Allocated memory was 305.7 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 209.3 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 05:22:48,380 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 305.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 70.20 ms. Allocated memory is still 305.7 MB. Free memory was 237.2 MB in the beginning and 235.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 85.08 ms. Allocated memory is still 305.7 MB. Free memory was 235.2 MB in the beginning and 233.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 357.92 ms. Allocated memory is still 305.7 MB. Free memory was 233.2 MB in the beginning and 209.3 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 3.6 GB. * TraceAbstraction took 70868.15 ms. Allocated memory was 305.7 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 209.3 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 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 (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 11 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 27 quantified variables from 46 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 70.7s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 1 SDslu, 29 SDs, 0 SdLazy, 14 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=3, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 720 SizeOfPredicates, 14 NumberOfNonLiveVariables, 516 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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/efm.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-22-48-392.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/efm.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-22-48-392.csv Completed graceful shutdown