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/SYNAPSE_4_e8_974.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 20:17:05,099 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 20:17:05,102 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 20:17:05,115 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 20:17:05,115 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 20:17:05,116 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 20:17:05,118 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 20:17:05,122 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 20:17:05,123 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 20:17:05,125 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 20:17:05,126 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 20:17:05,126 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 20:17:05,127 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 20:17:05,130 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 20:17:05,130 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 20:17:05,131 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 20:17:05,141 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 20:17:05,142 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 20:17:05,144 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 20:17:05,145 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 20:17:05,145 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 20:17:05,151 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 20:17:05,152 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 20:17:05,152 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 20:17:05,156 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 20:17:05,157 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 20:17:05,158 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 20:17:05,158 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 20:17:05,159 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 20:17:05,159 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 20:17:05,160 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 20:17:05,161 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 20:17:05,161 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 20:17:05,161 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 20:17:05,162 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 20:17:05,162 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 20:17:05,188 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 20:17:05,189 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 20:17:05,189 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 20:17:05,189 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 20:17:05,190 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 20:17:05,190 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 20:17:05,191 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 20:17:05,191 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 20:17:05,191 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 20:17:05,191 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 20:17:05,191 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 20:17:05,192 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 20:17:05,192 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 20:17:05,192 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 20:17:05,192 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 20:17:05,192 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 20:17:05,192 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 20:17:05,193 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 20:17:05,193 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 20:17:05,194 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 20:17:05,194 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 20:17:05,237 INFO ]: Repository-Root is: /tmp [2018-06-22 20:17:05,258 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 20:17:05,265 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 20:17:05,266 INFO ]: Initializing SmtParser... [2018-06-22 20:17:05,267 INFO ]: SmtParser initialized [2018-06-22 20:17:05,267 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_4_e8_974.smt2 [2018-06-22 20:17:05,269 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 20:17:05,362 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_4_e8_974.smt2 unknown [2018-06-22 20:17:05,796 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_4_e8_974.smt2 [2018-06-22 20:17:05,800 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 20:17:05,805 INFO ]: Walking toolchain with 4 elements. [2018-06-22 20:17:05,806 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 20:17:05,806 INFO ]: Initializing ChcToBoogie... [2018-06-22 20:17:05,806 INFO ]: ChcToBoogie initialized [2018-06-22 20:17:05,809 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:17:05" (1/1) ... [2018-06-22 20:17:05,856 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:17:05 Unit [2018-06-22 20:17:05,856 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 20:17:05,856 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 20:17:05,856 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 20:17:05,857 INFO ]: Boogie Preprocessor initialized [2018-06-22 20:17:05,875 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:17:05" (1/1) ... [2018-06-22 20:17:05,875 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:17:05" (1/1) ... [2018-06-22 20:17:05,897 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:17:05" (1/1) ... [2018-06-22 20:17:05,897 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:17:05" (1/1) ... [2018-06-22 20:17:05,902 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:17:05" (1/1) ... [2018-06-22 20:17:05,903 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:17:05" (1/1) ... [2018-06-22 20:17:05,905 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:17:05" (1/1) ... [2018-06-22 20:17:05,917 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 20:17:05,917 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 20:17:05,917 INFO ]: Initializing RCFGBuilder... [2018-06-22 20:17:05,917 INFO ]: RCFGBuilder initialized [2018-06-22 20:17:05,918 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:17:05" (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 20:17:05,929 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 20:17:05,929 INFO ]: Found specification of procedure False [2018-06-22 20:17:05,929 INFO ]: Found implementation of procedure False [2018-06-22 20:17:05,929 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 20:17:05,929 INFO ]: Found specification of procedure state [2018-06-22 20:17:05,929 INFO ]: Found implementation of procedure state [2018-06-22 20:17:05,929 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 20:17:05,929 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 20:17:05,929 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 20:17:06,232 INFO ]: Using library mode [2018-06-22 20:17:06,232 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:17:06 BoogieIcfgContainer [2018-06-22 20:17:06,232 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 20:17:06,235 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 20:17:06,235 INFO ]: Initializing TraceAbstraction... [2018-06-22 20:17:06,238 INFO ]: TraceAbstraction initialized [2018-06-22 20:17:06,239 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:17:05" (1/3) ... [2018-06-22 20:17:06,239 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf2551f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:17:06, skipping insertion in model container [2018-06-22 20:17:06,239 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:17:05" (2/3) ... [2018-06-22 20:17:06,240 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf2551f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:17:06, skipping insertion in model container [2018-06-22 20:17:06,240 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:17:06" (3/3) ... [2018-06-22 20:17:06,242 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 20:17:06,259 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 20:17:06,272 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 20:17:06,311 INFO ]: Using default assertion order modulation [2018-06-22 20:17:06,311 INFO ]: Interprodecural is true [2018-06-22 20:17:06,311 INFO ]: Hoare is false [2018-06-22 20:17:06,311 INFO ]: Compute interpolants for FPandBP [2018-06-22 20:17:06,311 INFO ]: Backedges is TWOTRACK [2018-06-22 20:17:06,311 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 20:17:06,311 INFO ]: Difference is false [2018-06-22 20:17:06,311 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 20:17:06,312 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 20:17:06,325 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 20:17:06,336 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 20:17:06,336 INFO ]: Found error trace [2018-06-22 20:17:06,337 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:17:06,337 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:17:06,343 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 20:17:06,345 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:17:06,345 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:17:06,385 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:17:06,385 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:17:06,385 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:17:06,450 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:17:06,637 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 20:17:06,639 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 20:17:06,639 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 20:17:06,641 INFO ]: Interpolant automaton has 4 states [2018-06-22 20:17:06,651 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 20:17:06,652 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 20:17:06,653 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 20:17:06,773 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:17:06,773 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 20:17:06,774 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 20:17:06,775 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 20:17:06,775 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:17:06,786 INFO ]: With dead ends: 13 [2018-06-22 20:17:06,786 INFO ]: Without dead ends: 13 [2018-06-22 20:17:06,788 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 20:17:06,803 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 20:17:06,824 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 20:17:06,825 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 20:17:06,826 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 20:17:06,827 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 20:17:06,827 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:17:06,827 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 20:17:06,827 INFO ]: Interpolant automaton has 4 states. [2018-06-22 20:17:06,827 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 20:17:06,829 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 20:17:06,829 INFO ]: Found error trace [2018-06-22 20:17:06,829 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:17:06,829 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:17:06,829 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 20:17:06,829 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:17:06,829 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:17:06,831 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:17:06,831 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:17:06,831 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:17:06,898 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:17:08,014 WARN ]: Spent 837.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2018-06-22 20:17:08,128 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:17:08,129 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:17:08,129 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 20:17:08,139 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:17:08,209 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:17:08,219 INFO ]: Computing forward predicates... [2018-06-22 20:17:08,965 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:08,972 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:08,978 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:08,984 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:09,010 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:17:09,111 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:17:09,191 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 20:17:09,497 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:09,499 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:09,499 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:09,530 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 20:17:13,660 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:17:13,696 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:17:13,696 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 20:17:13,696 INFO ]: Interpolant automaton has 7 states [2018-06-22 20:17:13,696 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 20:17:13,696 INFO ]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-06-22 20:17:13,697 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-06-22 20:17:13,897 WARN ]: Spent 134.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2018-06-22 20:17:13,976 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:17:13,976 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 20:17:13,977 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 20:17:13,977 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-22 20:17:13,978 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:17:13,978 INFO ]: With dead ends: 15 [2018-06-22 20:17:13,978 INFO ]: Without dead ends: 15 [2018-06-22 20:17:13,979 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-06-22 20:17:13,979 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 20:17:13,981 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 20:17:13,981 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 20:17:13,982 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 20:17:13,982 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 20:17:13,982 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:17:13,982 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 20:17:13,982 INFO ]: Interpolant automaton has 7 states. [2018-06-22 20:17:13,982 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 20:17:13,982 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 20:17:13,982 INFO ]: Found error trace [2018-06-22 20:17:13,983 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:17:13,983 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:17:13,983 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 20:17:13,983 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:17:13,983 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:17:13,984 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:17:13,984 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:17:13,984 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:17:14,048 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:17:14,604 WARN ]: Spent 350.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2018-06-22 20:17:14,742 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 20:17:14,742 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:17:14,742 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 20:17:14,750 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 20:17:14,841 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 20:17:14,841 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:17:14,848 INFO ]: Computing forward predicates... [2018-06-22 20:17:16,021 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 20:17:16,211 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 20:17:16,258 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 20:17:16,479 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 20:17:16,546 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:16,547 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:16,550 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:16,550 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:16,554 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:16,555 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:16,557 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:16,559 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:16,598 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:16,599 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 20:17:16,792 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:16,794 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 20:17:16,839 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:16,840 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 20:17:17,015 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:17:17,018 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:17,018 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:17,022 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:17,049 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:17,050 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:17:17,051 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:17,071 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:17,072 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:17,075 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:17,076 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:17,080 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:17:17,082 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:17:17,087 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:17:17,094 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:17,096 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:17:17,100 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:17,102 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:17,104 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:17,106 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:17,109 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:17:17,166 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:17,168 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:17:17,172 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:17:17,176 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:17:17,179 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:17:17,182 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:17,184 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:17,185 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:17:17,190 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:17,192 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:17,193 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:17,201 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:17,203 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:17,210 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:17,225 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:17,227 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 20:17:17,414 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 20:17:17,459 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:17,460 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:17,462 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:17:17,463 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:17,464 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 20:17:17,650 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:17,650 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:17,651 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:17,652 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:17,653 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:17:17,717 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 20:17:17,747 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 20:17:17,797 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 20:17:18,012 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 20:17:18,227 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:18,229 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:18,230 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:18,232 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:18,233 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:18,237 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:18,239 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:18,240 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:17:20,640 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 20:17:20,654 WARN ]: expecting exponential blowup for input size 14 [2018-06-22 20:17:20,704 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 20:17:20,715 WARN ]: expecting exponential blowup for input size 14 [2018-06-22 20:17:20,770 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:20,772 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:20,772 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:17:20,774 WARN ]: expecting exponential blowup for input size 14 [2018-06-22 20:17:20,816 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:17:20,817 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:20,819 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:20,820 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:20,820 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 20:17:20,834 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:20,836 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:20,837 WARN ]: expecting exponential blowup for input size 14 [2018-06-22 20:17:20,892 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:20,900 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 20:17:20,910 WARN ]: expecting exponential blowup for input size 14 [2018-06-22 20:17:20,956 WARN ]: expecting exponential blowup for input size 14 [2018-06-22 20:17:20,980 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 20:17:20,990 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:20,991 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:20,992 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:17:20,992 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:20,993 WARN ]: expecting exponential blowup for input size 14 [2018-06-22 20:17:21,051 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:21,052 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:21,053 WARN ]: expecting exponential blowup for input size 14 [2018-06-22 20:17:21,094 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:17:21,095 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:21,096 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:17:21,097 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:17:21,099 WARN ]: expecting exponential blowup for input size 12 Received shutdown request... [2018-06-22 20:18:13,118 INFO ]: Timeout while computing interpolants [2018-06-22 20:18:13,319 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 20:18:13,319 WARN ]: Verification canceled [2018-06-22 20:18:13,325 WARN ]: Timeout [2018-06-22 20:18:13,325 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:18:13 BoogieIcfgContainer [2018-06-22 20:18:13,326 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 20:18:13,326 INFO ]: Toolchain (without parser) took 67525.38 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 255.8 MB in the beginning and 275.6 MB in the end (delta: -19.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 20:18:13,330 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 20:18:13,330 INFO ]: ChcToBoogie took 50.15 ms. Allocated memory is still 309.3 MB. Free memory was 255.8 MB in the beginning and 253.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:18:13,331 INFO ]: Boogie Preprocessor took 60.20 ms. Allocated memory is still 309.3 MB. Free memory was 253.8 MB in the beginning and 251.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:18:13,331 INFO ]: RCFGBuilder took 315.32 ms. Allocated memory is still 309.3 MB. Free memory was 251.8 MB in the beginning and 235.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:18:13,332 INFO ]: TraceAbstraction took 67090.28 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 235.8 MB in the beginning and 275.6 MB in the end (delta: -39.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 20:18:13,337 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 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 50.15 ms. Allocated memory is still 309.3 MB. Free memory was 255.8 MB in the beginning and 253.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 60.20 ms. Allocated memory is still 309.3 MB. Free memory was 253.8 MB in the beginning and 251.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 315.32 ms. Allocated memory is still 309.3 MB. Free memory was 251.8 MB in the beginning and 235.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 67090.28 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 235.8 MB in the beginning and 275.6 MB in the end (delta: -39.8 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 18 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 67.0s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 8 SDslu, 39 SDs, 0 SdLazy, 23 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1440 SizeOfPredicates, 29 NumberOfNonLiveVariables, 312 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/6 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/SYNAPSE_4_e8_974.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_20-18-13-360.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/SYNAPSE_4_e8_974.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_20-18-13-360.csv Completed graceful shutdown