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/cav12/s3_srvr_12.cil.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:35:17,137 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:35:17,139 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:35:17,153 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:35:17,154 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:35:17,155 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:35:17,156 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:35:17,160 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:35:17,161 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:35:17,162 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:35:17,162 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:35:17,162 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:35:17,165 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:35:17,165 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:35:17,166 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:35:17,169 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:35:17,171 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:35:17,179 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:35:17,184 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:35:17,185 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:35:17,186 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:35:17,188 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:35:17,188 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:35:17,188 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:35:17,191 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:35:17,192 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:35:17,193 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:35:17,194 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:35:17,194 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:35:17,195 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:35:17,198 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:35:17,199 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:35:17,199 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:35:17,200 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:35:17,200 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:35:17,200 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:35:17,221 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:35:17,222 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:35:17,222 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:35:17,222 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:35:17,223 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:35:17,223 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:35:17,224 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:35:17,224 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:35:17,224 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:35:17,224 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:35:17,224 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:35:17,224 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:35:17,225 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:35:17,227 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:35:17,227 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:35:17,228 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:35:17,228 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:35:17,230 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:35:17,230 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:35:17,272 INFO ]: Repository-Root is: /tmp [2018-06-22 04:35:17,290 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:35:17,295 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:35:17,297 INFO ]: Initializing SmtParser... [2018-06-22 04:35:17,297 INFO ]: SmtParser initialized [2018-06-22 04:35:17,298 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_12.cil.smt2 [2018-06-22 04:35:17,299 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 04:35:17,377 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_12.cil.smt2 unknown [2018-06-22 04:35:17,916 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_12.cil.smt2 [2018-06-22 04:35:17,920 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:35:17,927 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:35:17,927 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:35:17,927 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:35:17,927 INFO ]: ChcToBoogie initialized [2018-06-22 04:35:17,931 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:35:17" (1/1) ... [2018-06-22 04:35:18,046 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:35:18 Unit [2018-06-22 04:35:18,047 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:35:18,047 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:35:18,047 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:35:18,047 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:35:18,078 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:35:18" (1/1) ... [2018-06-22 04:35:18,078 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:35:18" (1/1) ... [2018-06-22 04:35:18,089 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:35:18" (1/1) ... [2018-06-22 04:35:18,089 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:35:18" (1/1) ... [2018-06-22 04:35:18,105 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:35:18" (1/1) ... [2018-06-22 04:35:18,107 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:35:18" (1/1) ... [2018-06-22 04:35:18,113 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:35:18" (1/1) ... [2018-06-22 04:35:18,118 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:35:18,119 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:35:18,119 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:35:18,119 INFO ]: RCFGBuilder initialized [2018-06-22 04:35:18,120 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:35:18" (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 [2018-06-22 04:35:18,146 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:35:18,146 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:35:18,146 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:35:18,146 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:35:18,146 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:35:18,146 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 04:35:18,606 INFO ]: Using library mode [2018-06-22 04:35:18,607 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:35:18 BoogieIcfgContainer [2018-06-22 04:35:18,607 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:35:18,608 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:35:18,608 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:35:18,611 INFO ]: TraceAbstraction initialized [2018-06-22 04:35:18,611 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:35:17" (1/3) ... [2018-06-22 04:35:18,612 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77efea3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:35:18, skipping insertion in model container [2018-06-22 04:35:18,612 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:35:18" (2/3) ... [2018-06-22 04:35:18,612 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77efea3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:35:18, skipping insertion in model container [2018-06-22 04:35:18,612 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:35:18" (3/3) ... [2018-06-22 04:35:18,618 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:35:18,627 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:35:18,637 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:35:18,691 INFO ]: Using default assertion order modulation [2018-06-22 04:35:18,691 INFO ]: Interprodecural is true [2018-06-22 04:35:18,691 INFO ]: Hoare is false [2018-06-22 04:35:18,691 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:35:18,691 INFO ]: Backedges is TWOTRACK [2018-06-22 04:35:18,691 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:35:18,691 INFO ]: Difference is false [2018-06-22 04:35:18,691 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:35:18,691 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:35:18,705 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:35:18,718 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:35:18,718 INFO ]: Found error trace [2018-06-22 04:35:18,719 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:35:18,721 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:35:18,726 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 04:35:18,727 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:35:18,728 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:35:18,776 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:35:18,776 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:35:18,776 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:35:18,847 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:35:18,964 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:35:18,967 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:35:18,967 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:35:18,969 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:35:18,984 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:35:18,985 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:35:18,988 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:35:19,086 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:35:19,086 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:35:19,087 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:35:19,088 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:35:19,088 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:35:19,097 INFO ]: With dead ends: 9 [2018-06-22 04:35:19,097 INFO ]: Without dead ends: 9 [2018-06-22 04:35:19,099 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 04:35:19,115 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:35:19,136 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:35:19,137 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:35:19,137 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:35:19,139 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:35:19,139 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:35:19,139 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:35:19,139 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:35:19,139 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:35:19,139 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:35:19,139 INFO ]: Found error trace [2018-06-22 04:35:19,139 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:35:19,139 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:35:19,140 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 04:35:19,140 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:35:19,140 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:35:19,140 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:35:19,140 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:35:19,140 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:35:19,294 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:35:19,636 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:35:19,637 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:35:19,637 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 04:35:19,647 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:35:19,794 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:35:19,809 INFO ]: Computing forward predicates... [2018-06-22 04:35:20,470 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:35:20,492 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:35:20,492 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 04:35:20,492 INFO ]: Interpolant automaton has 6 states [2018-06-22 04:35:20,492 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 04:35:20,493 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 04:35:20,493 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 04:35:20,842 WARN ]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 04:35:20,910 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:35:20,910 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 04:35:20,911 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 04:35:20,911 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 04:35:20,911 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:35:20,911 INFO ]: With dead ends: 11 [2018-06-22 04:35:20,911 INFO ]: Without dead ends: 11 [2018-06-22 04:35:20,912 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-22 04:35:20,912 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 04:35:20,914 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 04:35:20,914 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 04:35:20,914 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 04:35:20,914 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 04:35:20,914 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:35:20,914 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 04:35:20,914 INFO ]: Interpolant automaton has 6 states. [2018-06-22 04:35:20,914 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 04:35:20,914 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 04:35:20,915 INFO ]: Found error trace [2018-06-22 04:35:20,915 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:35:20,917 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:35:20,917 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-22 04:35:20,917 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:35:20,917 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:35:20,918 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:35:20,918 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:35:20,918 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:35:21,120 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:35:21,557 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:35:21,557 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:35:21,557 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 04:35:21,570 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:35:21,739 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:35:21,739 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:35:21,753 INFO ]: Computing forward predicates... [2018-06-22 04:35:23,012 WARN ]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 11 [2018-06-22 04:35:23,866 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:35:23,888 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:35:23,888 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 04:35:23,888 INFO ]: Interpolant automaton has 10 states [2018-06-22 04:35:23,888 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 04:35:23,888 INFO ]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-06-22 04:35:23,889 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 04:35:24,114 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:35:24,114 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 04:35:24,114 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 04:35:24,114 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 04:35:24,114 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:35:24,114 INFO ]: With dead ends: 12 [2018-06-22 04:35:24,114 INFO ]: Without dead ends: 12 [2018-06-22 04:35:24,115 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-06-22 04:35:24,115 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 04:35:24,116 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 04:35:24,116 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 04:35:24,117 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 04:35:24,117 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-22 04:35:24,117 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:35:24,117 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 04:35:24,117 INFO ]: Interpolant automaton has 10 states. [2018-06-22 04:35:24,117 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 04:35:24,117 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 04:35:24,117 INFO ]: Found error trace [2018-06-22 04:35:24,117 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:35:24,117 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:35:24,117 INFO ]: Analyzing trace with hash 201204236, now seen corresponding path program 3 times [2018-06-22 04:35:24,117 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:35:24,117 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:35:24,118 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:35:24,118 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:35:24,118 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:35:24,262 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:35:25,371 WARN ]: Spent 614.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 14 [2018-06-22 04:35:25,386 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:35:25,386 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:35:25,386 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 04:35:25,395 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:35:25,580 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 04:35:25,580 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:35:25,593 INFO ]: Computing forward predicates... [2018-06-22 04:35:26,180 WARN ]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:35:32,710 WARN ]: Spent 2.28 s on a formula simplification. DAG size of input: 302 DAG size of output: 117 [2018-06-22 04:35:33,264 WARN ]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:35:33,282 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:35:33,316 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:35:33,316 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-06-22 04:35:33,316 INFO ]: Interpolant automaton has 12 states [2018-06-22 04:35:33,317 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 04:35:33,317 INFO ]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-06-22 04:35:33,317 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2018-06-22 04:35:33,783 WARN ]: Spent 361.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-06-22 04:35:34,344 WARN ]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 04:35:35,119 WARN ]: Spent 674.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 22 [2018-06-22 04:35:35,532 WARN ]: Spent 384.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 120 [2018-06-22 04:35:35,839 WARN ]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2018-06-22 04:35:35,918 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:35:35,918 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 04:35:35,919 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 04:35:35,919 INFO ]: Start accepts. Automaton has 12 states. Word has length 11 [2018-06-22 04:35:35,919 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:35:35,919 INFO ]: With dead ends: 14 [2018-06-22 04:35:35,919 INFO ]: Without dead ends: 14 [2018-06-22 04:35:35,919 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2018-06-22 04:35:35,920 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 04:35:35,922 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 04:35:35,922 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 04:35:35,923 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 04:35:35,923 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-06-22 04:35:35,923 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:35:35,923 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 04:35:35,923 INFO ]: Interpolant automaton has 12 states. [2018-06-22 04:35:35,923 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 04:35:35,923 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 04:35:35,923 INFO ]: Found error trace [2018-06-22 04:35:35,923 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:35:35,923 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:35:35,923 INFO ]: Analyzing trace with hash 23503628, now seen corresponding path program 4 times [2018-06-22 04:35:35,923 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:35:35,923 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:35:35,924 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:35:35,924 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:35:35,924 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:35:36,199 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:35:36,833 WARN ]: Spent 134.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 3 [2018-06-22 04:35:37,004 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:35:37,004 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:35:37,004 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) [2018-06-22 04:35:37,037 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 [2018-06-22 04:35:37,304 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 04:35:37,304 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:35:37,319 INFO ]: Computing forward predicates... [2018-06-22 04:35:37,943 WARN ]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:35:38,820 WARN ]: Spent 255.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 17 [2018-06-22 04:35:43,915 WARN ]: Spent 2.38 s on a formula simplification. DAG size of input: 295 DAG size of output: 117 [2018-06-22 04:36:01,996 WARN ]: Simplifying disjunction of 21381 conjuctions. This might take some time... Received shutdown request... [2018-06-22 04:36:21,005 INFO ]: Timeout while computing interpolants [2018-06-22 04:36:21,206 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:36:21,206 WARN ]: Verification canceled [2018-06-22 04:36:21,210 WARN ]: Timeout [2018-06-22 04:36:21,210 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:36:21 BoogieIcfgContainer [2018-06-22 04:36:21,210 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:36:21,211 INFO ]: Toolchain (without parser) took 63290.03 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 241.1 MB in the beginning and 1.1 GB in the end (delta: -817.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:36:21,212 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:36:21,212 INFO ]: ChcToBoogie took 119.90 ms. Allocated memory is still 307.8 MB. Free memory was 240.2 MB in the beginning and 237.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:36:21,212 INFO ]: Boogie Preprocessor took 70.80 ms. Allocated memory is still 307.8 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 04:36:21,213 INFO ]: RCFGBuilder took 488.17 ms. Allocated memory is still 307.8 MB. Free memory was 235.2 MB in the beginning and 202.9 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 3.6 GB. [2018-06-22 04:36:21,214 INFO ]: TraceAbstraction took 62602.29 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 202.9 MB in the beginning and 1.1 GB in the end (delta: -855.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 04:36:21,216 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 119.90 ms. Allocated memory is still 307.8 MB. Free memory was 240.2 MB in the beginning and 237.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 70.80 ms. Allocated memory is still 307.8 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. * RCFGBuilder took 488.17 ms. Allocated memory is still 307.8 MB. Free memory was 235.2 MB in the beginning and 202.9 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 62602.29 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 202.9 MB in the beginning and 1.1 GB in the end (delta: -855.8 MB). 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 14 with TraceHistMax 6, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 21381 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 62.5s OverallTime, 5 OverallIterations, 6 TraceHistogramMax, 3.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 6 SDslu, 77 SDs, 0 SdLazy, 33 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=4, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 4624 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1277 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/34 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/s3_srvr_12.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-36-21-231.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_srvr_12.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-36-21-231.csv Completed graceful shutdown