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_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_4_e7_1775_e7_3320.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 20:34:31,170 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 20:34:31,171 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 20:34:31,182 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 20:34:31,182 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 20:34:31,183 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 20:34:31,184 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 20:34:31,189 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 20:34:31,190 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 20:34:31,191 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 20:34:31,191 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 20:34:31,192 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 20:34:31,192 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 20:34:31,193 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 20:34:31,196 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 20:34:31,196 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 20:34:31,198 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 20:34:31,210 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 20:34:31,213 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 20:34:31,214 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 20:34:31,214 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 20:34:31,216 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 20:34:31,216 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 20:34:31,217 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 20:34:31,217 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 20:34:31,218 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 20:34:31,219 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 20:34:31,220 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 20:34:31,220 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 20:34:31,221 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 20:34:31,221 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 20:34:31,222 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 20:34:31,222 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 20:34:31,223 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 20:34:31,223 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 20:34:31,224 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 20:34:31,237 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 20:34:31,238 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 20:34:31,238 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 20:34:31,238 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 20:34:31,239 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 20:34:31,239 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 20:34:31,240 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 20:34:31,240 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 20:34:31,240 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 20:34:31,240 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 20:34:31,240 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 20:34:31,241 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 20:34:31,241 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 20:34:31,241 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 20:34:31,241 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 20:34:31,241 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 20:34:31,241 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 20:34:31,242 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 20:34:31,242 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 20:34:31,243 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 20:34:31,243 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 20:34:31,294 INFO ]: Repository-Root is: /tmp [2018-06-22 20:34:31,308 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 20:34:31,313 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 20:34:31,315 INFO ]: Initializing SmtParser... [2018-06-22 20:34:31,315 INFO ]: SmtParser initialized [2018-06-22 20:34:31,316 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_4_e7_1775_e7_3320.smt2 [2018-06-22 20:34:31,317 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 20:34:31,404 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_4_e7_1775_e7_3320.smt2 unknown [2018-06-22 20:34:31,957 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_4_e7_1775_e7_3320.smt2 [2018-06-22 20:34:31,961 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 20:34:31,967 INFO ]: Walking toolchain with 4 elements. [2018-06-22 20:34:31,968 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 20:34:31,968 INFO ]: Initializing ChcToBoogie... [2018-06-22 20:34:31,968 INFO ]: ChcToBoogie initialized [2018-06-22 20:34:31,972 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:34:31" (1/1) ... [2018-06-22 20:34:32,058 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:32 Unit [2018-06-22 20:34:32,058 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 20:34:32,059 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 20:34:32,059 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 20:34:32,059 INFO ]: Boogie Preprocessor initialized [2018-06-22 20:34:32,104 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:32" (1/1) ... [2018-06-22 20:34:32,104 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:32" (1/1) ... [2018-06-22 20:34:32,132 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:32" (1/1) ... [2018-06-22 20:34:32,132 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:32" (1/1) ... [2018-06-22 20:34:32,142 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:32" (1/1) ... [2018-06-22 20:34:32,143 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:32" (1/1) ... [2018-06-22 20:34:32,146 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:32" (1/1) ... [2018-06-22 20:34:32,150 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 20:34:32,151 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 20:34:32,151 INFO ]: Initializing RCFGBuilder... [2018-06-22 20:34:32,151 INFO ]: RCFGBuilder initialized [2018-06-22 20:34:32,152 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:32" (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 20:34:32,198 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 20:34:32,199 INFO ]: Found specification of procedure False [2018-06-22 20:34:32,199 INFO ]: Found implementation of procedure False [2018-06-22 20:34:32,199 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 20:34:32,199 INFO ]: Found specification of procedure state [2018-06-22 20:34:32,199 INFO ]: Found implementation of procedure state [2018-06-22 20:34:32,199 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 20:34:32,199 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 20:34:32,199 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 20:34:32,637 INFO ]: Using library mode [2018-06-22 20:34:32,637 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:34:32 BoogieIcfgContainer [2018-06-22 20:34:32,637 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 20:34:32,639 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 20:34:32,639 INFO ]: Initializing TraceAbstraction... [2018-06-22 20:34:32,645 INFO ]: TraceAbstraction initialized [2018-06-22 20:34:32,646 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:34:31" (1/3) ... [2018-06-22 20:34:32,646 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194b80ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:34:32, skipping insertion in model container [2018-06-22 20:34:32,647 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:32" (2/3) ... [2018-06-22 20:34:32,647 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194b80ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:34:32, skipping insertion in model container [2018-06-22 20:34:32,647 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:34:32" (3/3) ... [2018-06-22 20:34:32,649 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 20:34:32,659 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 20:34:32,668 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 20:34:32,718 INFO ]: Using default assertion order modulation [2018-06-22 20:34:32,718 INFO ]: Interprodecural is true [2018-06-22 20:34:32,718 INFO ]: Hoare is false [2018-06-22 20:34:32,718 INFO ]: Compute interpolants for FPandBP [2018-06-22 20:34:32,718 INFO ]: Backedges is TWOTRACK [2018-06-22 20:34:32,718 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 20:34:32,718 INFO ]: Difference is false [2018-06-22 20:34:32,718 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 20:34:32,718 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 20:34:32,733 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 20:34:32,743 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 20:34:32,743 INFO ]: Found error trace [2018-06-22 20:34:32,744 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:34:32,744 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:34:32,749 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 20:34:32,751 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:34:32,751 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:34:32,787 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:34:32,787 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:34:32,787 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:34:32,915 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:34:33,251 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 20:34:33,253 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 20:34:33,253 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 20:34:33,254 INFO ]: Interpolant automaton has 4 states [2018-06-22 20:34:33,270 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 20:34:33,270 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 20:34:33,273 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 20:34:33,428 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:34:33,428 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 20:34:33,429 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 20:34:33,431 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 20:34:33,431 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:34:33,442 INFO ]: With dead ends: 13 [2018-06-22 20:34:33,442 INFO ]: Without dead ends: 13 [2018-06-22 20:34:33,444 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 20:34:33,459 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 20:34:33,478 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 20:34:33,479 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 20:34:33,480 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 20:34:33,481 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 20:34:33,482 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:34:33,482 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 20:34:33,482 INFO ]: Interpolant automaton has 4 states. [2018-06-22 20:34:33,482 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 20:34:33,483 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 20:34:33,483 INFO ]: Found error trace [2018-06-22 20:34:33,483 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:34:33,483 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:34:33,483 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 20:34:33,483 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:34:33,483 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:34:33,484 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:34:33,484 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:34:33,484 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:34:33,608 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:34:34,392 WARN ]: Spent 506.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 16 [2018-06-22 20:34:34,448 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:34:34,448 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:34:34,448 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 20:34:34,456 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:34:34,621 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:34:34,635 INFO ]: Computing forward predicates... [2018-06-22 20:34:35,169 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:34:37,228 WARN ]: Spent 515.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 22 [2018-06-22 20:34:37,304 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:34:37,342 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:34:37,342 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 20:34:37,342 INFO ]: Interpolant automaton has 8 states [2018-06-22 20:34:37,343 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 20:34:37,343 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 20:34:37,343 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 20:34:37,618 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:34:37,618 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 20:34:37,619 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 20:34:37,619 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 20:34:37,619 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:34:37,620 INFO ]: With dead ends: 15 [2018-06-22 20:34:37,620 INFO ]: Without dead ends: 15 [2018-06-22 20:34:37,621 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-06-22 20:34:37,621 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 20:34:37,623 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 20:34:37,623 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 20:34:37,624 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 20:34:37,624 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 20:34:37,624 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:34:37,624 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 20:34:37,624 INFO ]: Interpolant automaton has 8 states. [2018-06-22 20:34:37,624 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 20:34:37,624 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 20:34:37,624 INFO ]: Found error trace [2018-06-22 20:34:37,624 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:34:37,625 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:34:37,625 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 20:34:37,625 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:34:37,625 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:34:37,626 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:34:37,626 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:34:37,626 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:34:37,756 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:34:38,094 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 20:34:38,094 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:34:38,094 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 20:34:38,103 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 20:34:38,292 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 20:34:38,292 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:34:38,299 INFO ]: Computing forward predicates... [2018-06-22 20:34:38,533 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:34:38,558 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:38,562 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:34:38,564 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:34:38,590 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:38,592 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:34:38,595 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:34:38,604 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:34:38,607 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:34:38,610 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:38,612 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:34:38,612 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:38,615 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:34:38,665 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:38,669 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:38,672 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:38,673 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:38,678 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:38,681 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:34:53,018 WARN ]: Spent 2.96 s on a formula simplification. DAG size of input: 391 DAG size of output: 34 [2018-06-22 20:34:53,427 WARN ]: Spent 244.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 35 [2018-06-22 20:34:53,482 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 20:34:53,507 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:34:53,507 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 20:34:53,507 INFO ]: Interpolant automaton has 12 states [2018-06-22 20:34:53,508 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 20:34:53,508 INFO ]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-06-22 20:34:53,508 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 20:34:54,145 WARN ]: Spent 580.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 113 [2018-06-22 20:34:54,341 WARN ]: Spent 155.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2018-06-22 20:34:54,636 WARN ]: Spent 265.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2018-06-22 20:34:54,681 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:34:54,681 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 20:34:54,683 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 20:34:54,683 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 20:34:54,683 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:34:54,684 INFO ]: With dead ends: 17 [2018-06-22 20:34:54,684 INFO ]: Without dead ends: 17 [2018-06-22 20:34:54,684 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-06-22 20:34:54,684 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 20:34:54,687 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 20:34:54,687 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 20:34:54,688 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 20:34:54,688 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 20:34:54,688 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:34:54,688 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 20:34:54,688 INFO ]: Interpolant automaton has 12 states. [2018-06-22 20:34:54,688 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 20:34:54,689 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 20:34:54,689 INFO ]: Found error trace [2018-06-22 20:34:54,689 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:34:54,689 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:34:54,689 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 20:34:54,689 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:34:54,689 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:34:54,690 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:34:54,690 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 20:34:54,690 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:34:54,864 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:34:55,619 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 20:34:55,619 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:34:55,620 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 20:34:55,626 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 20:34:55,788 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 20:34:55,788 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:34:55,797 INFO ]: Computing forward predicates... [2018-06-22 20:34:55,992 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:55,997 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:56,002 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:34:56,133 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:56,134 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:56,135 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:56,137 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:34:56,145 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:34:56,185 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:34:56,285 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:56,289 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:34:56,291 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:34:56,295 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:56,299 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:56,303 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:34:56,340 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:56,342 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:34:56,343 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:34:56,354 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:34:59,049 WARN ]: Spent 197.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 7 [2018-06-22 20:34:59,071 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:34:59,078 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:34:59,087 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:34:59,763 WARN ]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 14 [2018-06-22 20:34:59,783 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:35:00,220 WARN ]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 9 [2018-06-22 20:35:00,273 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 20:35:00,294 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:35:00,294 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-22 20:35:00,294 INFO ]: Interpolant automaton has 16 states [2018-06-22 20:35:00,294 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 20:35:00,295 INFO ]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2018-06-22 20:35:00,295 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-22 20:35:00,700 WARN ]: Spent 210.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2018-06-22 20:35:00,941 WARN ]: Spent 213.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2018-06-22 20:35:01,070 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:35:01,071 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 20:35:01,071 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 20:35:01,071 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-22 20:35:01,072 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:35:01,072 INFO ]: With dead ends: 19 [2018-06-22 20:35:01,072 INFO ]: Without dead ends: 19 [2018-06-22 20:35:01,072 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2018-06-22 20:35:01,072 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 20:35:01,075 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 20:35:01,075 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 20:35:01,076 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 20:35:01,076 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 20:35:01,076 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:35:01,076 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 20:35:01,076 INFO ]: Interpolant automaton has 16 states. [2018-06-22 20:35:01,076 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 20:35:01,077 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 20:35:01,077 INFO ]: Found error trace [2018-06-22 20:35:01,077 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:35:01,077 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:35:01,077 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 20:35:01,077 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:35:01,077 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:35:01,078 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:35:01,078 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 20:35:01,078 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:35:01,203 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:35:03,039 WARN ]: Spent 1.57 s on a formula simplification. DAG size of input: 77 DAG size of output: 21 [2018-06-22 20:35:03,221 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 23 [2018-06-22 20:35:03,422 WARN ]: Spent 155.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2018-06-22 20:35:03,903 WARN ]: Spent 158.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 30 [2018-06-22 20:35:04,030 WARN ]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 21 [2018-06-22 20:35:04,106 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 20:35:04,106 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:35:04,160 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) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 20:35:04,166 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 20:35:04,407 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 20:35:04,407 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:35:04,420 INFO ]: Computing forward predicates... [2018-06-22 20:35:04,594 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:35:04,604 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:35:04,607 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:35:04,612 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:35:04,699 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:35:04,701 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:35:04,707 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:35:04,709 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:35:04,712 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:35:04,713 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:35:04,715 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:35:04,805 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:35:04,805 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:35:04,806 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:35:04,807 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:35:04,878 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:35:04,882 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:35:04,884 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:35:04,887 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:35:07,641 WARN ]: Spent 156.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 7 [2018-06-22 20:35:07,693 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:35:07,701 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:35:11,233 WARN ]: Spent 578.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 26 [2018-06-22 20:35:11,242 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:35:18,139 WARN ]: Spent 5.74 s on a formula simplification. DAG size of input: 551 DAG size of output: 57 [2018-06-22 20:35:18,410 WARN ]: Spent 184.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2018-06-22 20:35:18,598 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 20:35:18,619 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:35:18,619 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2018-06-22 20:35:18,619 INFO ]: Interpolant automaton has 20 states [2018-06-22 20:35:18,619 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 20:35:18,619 INFO ]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2018-06-22 20:35:18,619 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-22 20:35:19,834 WARN ]: Spent 1.12 s on a formula simplification. DAG size of input: 150 DAG size of output: 130 [2018-06-22 20:35:20,241 WARN ]: Spent 339.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 62 [2018-06-22 20:35:21,155 WARN ]: Spent 866.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 100 [2018-06-22 20:35:22,248 WARN ]: Spent 1.04 s on a formula simplification. DAG size of input: 144 DAG size of output: 119 [2018-06-22 20:35:22,271 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:35:22,271 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 20:35:22,271 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 20:35:22,271 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-22 20:35:22,272 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:35:22,272 INFO ]: With dead ends: 15 [2018-06-22 20:35:22,272 INFO ]: Without dead ends: 0 [2018-06-22 20:35:22,272 INFO ]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2018-06-22 20:35:22,272 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 20:35:22,272 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 20:35:22,272 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 20:35:22,272 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 20:35:22,272 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-22 20:35:22,272 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:35:22,272 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 20:35:22,272 INFO ]: Interpolant automaton has 20 states. [2018-06-22 20:35:22,272 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 20:35:22,272 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 20:35:22,276 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:35:22 BoogieIcfgContainer [2018-06-22 20:35:22,276 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 20:35:22,276 INFO ]: Toolchain (without parser) took 50314.85 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 239.7 MB in the beginning and 826.8 MB in the end (delta: -587.1 MB). Peak memory consumption was 610.9 MB. Max. memory is 3.6 GB. [2018-06-22 20:35:22,277 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 20:35:22,277 INFO ]: ChcToBoogie took 90.84 ms. Allocated memory is still 309.3 MB. Free memory was 239.7 MB in the beginning and 236.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:35:22,277 INFO ]: Boogie Preprocessor took 91.67 ms. Allocated memory is still 309.3 MB. Free memory was 236.8 MB in the beginning and 234.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:35:22,278 INFO ]: RCFGBuilder took 486.52 ms. Allocated memory is still 309.3 MB. Free memory was 234.8 MB in the beginning and 202.7 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 3.6 GB. [2018-06-22 20:35:22,278 INFO ]: TraceAbstraction took 49636.81 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 202.7 MB in the beginning and 826.8 MB in the end (delta: -624.2 MB). Peak memory consumption was 573.8 MB. Max. memory is 3.6 GB. [2018-06-22 20:35:22,280 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 90.84 ms. Allocated memory is still 309.3 MB. Free memory was 239.7 MB in the beginning and 236.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 91.67 ms. Allocated memory is still 309.3 MB. Free memory was 236.8 MB in the beginning and 234.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 486.52 ms. Allocated memory is still 309.3 MB. Free memory was 234.8 MB in the beginning and 202.7 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 49636.81 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 202.7 MB in the beginning and 826.8 MB in the end (delta: -624.2 MB). Peak memory consumption was 573.8 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. SAFE Result, 49.5s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 6.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 66 SDslu, 215 SDs, 0 SdLazy, 184 SolverSat, 93 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 21.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 41.7s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 52044 SizeOfPredicates, 198 NumberOfNonLiveVariables, 4604 ConjunctsInSsa, 296 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 40/140 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ticket3i_4_e7_1775_e7_3320.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_20-35-22-289.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ticket3i_4_e7_1775_e7_3320.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_20-35-22-289.csv Received shutdown request...