java -Xss1g -Xmx8000000000 -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-comp18-benchmarks/lra/chc-lra-0085.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-20 23:13:09,795 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-20 23:13:09,797 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-20 23:13:09,809 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-20 23:13:09,809 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-20 23:13:09,810 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-20 23:13:09,811 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-20 23:13:09,813 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-20 23:13:09,814 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-20 23:13:09,815 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-20 23:13:09,816 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-20 23:13:09,816 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-20 23:13:09,817 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-20 23:13:09,818 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-20 23:13:09,819 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-20 23:13:09,820 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-20 23:13:09,822 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-20 23:13:09,824 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-20 23:13:09,825 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-20 23:13:09,826 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-20 23:13:09,828 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-20 23:13:09,835 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-20 23:13:09,836 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-20 23:13:09,836 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-20 23:13:09,837 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-20 23:13:09,838 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-20 23:13:09,839 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-20 23:13:09,840 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-20 23:13:09,841 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-20 23:13:09,849 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-20 23:13:09,850 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-20 23:13:09,851 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-20 23:13:09,851 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-20 23:13:09,852 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-20 23:13:09,852 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-20 23:13:09,853 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-20 23:13:09,867 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-20 23:13:09,867 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-20 23:13:09,868 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-20 23:13:09,868 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-20 23:13:09,869 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-20 23:13:09,869 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-20 23:13:09,869 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-20 23:13:09,869 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-20 23:13:09,870 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-20 23:13:09,870 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-20 23:13:09,870 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-20 23:13:09,870 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-20 23:13:09,870 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-20 23:13:09,871 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-20 23:13:09,871 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-20 23:13:09,871 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-20 23:13:09,871 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-20 23:13:09,871 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-20 23:13:09,871 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-20 23:13:09,873 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-20 23:13:09,873 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-20 23:13:09,920 INFO ]: Repository-Root is: /tmp [2018-06-20 23:13:09,932 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-20 23:13:09,937 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-20 23:13:09,938 INFO ]: Initializing SmtParser... [2018-06-20 23:13:09,938 INFO ]: SmtParser initialized [2018-06-20 23:13:09,939 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp18-benchmarks/lra/chc-lra-0085.smt2 [2018-06-20 23:13:09,940 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 [2018-06-20 23:13:10,035 INFO ]: Executing SMT file /storage/chc-comp18-benchmarks/lra/chc-lra-0085.smt2 unknown [2018-06-20 23:13:10,556 INFO ]: Succesfully executed SMT file /storage/chc-comp18-benchmarks/lra/chc-lra-0085.smt2 [2018-06-20 23:13:10,560 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-20 23:13:10,566 INFO ]: Walking toolchain with 4 elements. [2018-06-20 23:13:10,566 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-20 23:13:10,566 INFO ]: Initializing ChcToBoogie... [2018-06-20 23:13:10,566 INFO ]: ChcToBoogie initialized [2018-06-20 23:13:10,569 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 20.06 11:13:10" (1/1) ... [2018-06-20 23:13:10,621 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:13:10 Unit [2018-06-20 23:13:10,621 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-20 23:13:10,622 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-20 23:13:10,622 INFO ]: Initializing Boogie Preprocessor... [2018-06-20 23:13:10,622 INFO ]: Boogie Preprocessor initialized [2018-06-20 23:13:10,644 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:13:10" (1/1) ... [2018-06-20 23:13:10,644 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:13:10" (1/1) ... [2018-06-20 23:13:10,657 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:13:10" (1/1) ... [2018-06-20 23:13:10,657 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:13:10" (1/1) ... [2018-06-20 23:13:10,673 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:13:10" (1/1) ... [2018-06-20 23:13:10,674 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:13:10" (1/1) ... [2018-06-20 23:13:10,679 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:13:10" (1/1) ... [2018-06-20 23:13:10,684 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-20 23:13:10,684 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-20 23:13:10,685 INFO ]: Initializing RCFGBuilder... [2018-06-20 23:13:10,685 INFO ]: RCFGBuilder initialized [2018-06-20 23:13:10,685 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:13:10" (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) [2018-06-20 23:13:10,694 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-20 23:13:10,694 INFO ]: Found specification of procedure False [2018-06-20 23:13:10,694 INFO ]: Found implementation of procedure False [2018-06-20 23:13:10,694 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-20 23:13:10,694 INFO ]: Found specification of procedure state [2018-06-20 23:13:10,694 INFO ]: Found implementation of procedure state [2018-06-20 23:13:10,695 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-20 23:13:10,695 INFO ]: Found specification of procedure Ultimate.START [2018-06-20 23:13:10,695 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 [2018-06-20 23:13:11,075 INFO ]: Using library mode [2018-06-20 23:13:11,076 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 11:13:11 BoogieIcfgContainer [2018-06-20 23:13:11,076 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-20 23:13:11,078 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-20 23:13:11,078 INFO ]: Initializing TraceAbstraction... [2018-06-20 23:13:11,081 INFO ]: TraceAbstraction initialized [2018-06-20 23:13:11,082 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 20.06 11:13:10" (1/3) ... [2018-06-20 23:13:11,082 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2482732d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 20.06 11:13:11, skipping insertion in model container [2018-06-20 23:13:11,083 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:13:10" (2/3) ... [2018-06-20 23:13:11,083 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2482732d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 11:13:11, skipping insertion in model container [2018-06-20 23:13:11,083 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 11:13:11" (3/3) ... [2018-06-20 23:13:11,085 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-20 23:13:11,094 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-20 23:13:11,103 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-20 23:13:11,153 INFO ]: Using default assertion order modulation [2018-06-20 23:13:11,153 INFO ]: Interprodecural is true [2018-06-20 23:13:11,154 INFO ]: Hoare is false [2018-06-20 23:13:11,154 INFO ]: Compute interpolants for FPandBP [2018-06-20 23:13:11,154 INFO ]: Backedges is TWOTRACK [2018-06-20 23:13:11,154 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-20 23:13:11,154 INFO ]: Difference is false [2018-06-20 23:13:11,154 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-20 23:13:11,154 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-20 23:13:11,171 INFO ]: Start isEmpty. Operand 13 states. [2018-06-20 23:13:11,185 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-20 23:13:11,185 INFO ]: Found error trace [2018-06-20 23:13:11,186 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:13:11,186 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:13:11,192 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-20 23:13:11,194 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:13:11,194 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:13:11,237 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:13:11,237 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 23:13:11,237 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:13:11,290 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:13:11,423 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 23:13:11,426 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-20 23:13:11,426 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-20 23:13:11,439 INFO ]: Interpolant automaton has 4 states [2018-06-20 23:13:11,465 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-20 23:13:11,466 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-20 23:13:11,469 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-20 23:13:11,614 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-20 23:13:11,614 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-20 23:13:11,621 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-20 23:13:11,622 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-20 23:13:11,623 INFO ]: Finished accepts. some prefix is accepted. [2018-06-20 23:13:11,635 INFO ]: With dead ends: 13 [2018-06-20 23:13:11,635 INFO ]: Without dead ends: 13 [2018-06-20 23:13:11,637 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-20 23:13:11,659 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-20 23:13:11,684 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-20 23:13:11,686 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-20 23:13:11,686 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-20 23:13:11,688 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-20 23:13:11,688 INFO ]: Finished accepts. word is rejected. [2018-06-20 23:13:11,688 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-20 23:13:11,688 INFO ]: Interpolant automaton has 4 states. [2018-06-20 23:13:11,688 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-20 23:13:11,689 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-20 23:13:11,689 INFO ]: Found error trace [2018-06-20 23:13:11,689 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:13:11,690 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:13:11,690 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-20 23:13:11,690 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:13:11,690 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:13:11,696 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:13:11,696 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 23:13:11,696 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:13:11,883 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:13:12,349 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-20 23:13:12,349 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-20 23:13:12,349 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) [2018-06-20 23:13:12,365 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-20 23:13:12,496 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:13:12,510 INFO ]: Computing forward predicates... [2018-06-20 23:13:13,221 WARN ]: Spent 299.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-06-20 23:13:13,402 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-20 23:13:13,424 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-20 23:13:13,424 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-20 23:13:13,425 INFO ]: Interpolant automaton has 8 states [2018-06-20 23:13:13,425 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-20 23:13:13,425 INFO ]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-20 23:13:13,425 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-20 23:13:13,812 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-20 23:13:13,813 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-20 23:13:13,814 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-20 23:13:13,814 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-20 23:13:13,814 INFO ]: Finished accepts. some prefix is accepted. [2018-06-20 23:13:13,815 INFO ]: With dead ends: 15 [2018-06-20 23:13:13,815 INFO ]: Without dead ends: 15 [2018-06-20 23:13:13,816 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-06-20 23:13:13,816 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-20 23:13:13,821 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-20 23:13:13,821 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-20 23:13:13,821 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-20 23:13:13,821 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-20 23:13:13,821 INFO ]: Finished accepts. word is rejected. [2018-06-20 23:13:13,821 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-20 23:13:13,821 INFO ]: Interpolant automaton has 8 states. [2018-06-20 23:13:13,821 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-20 23:13:13,822 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-20 23:13:13,822 INFO ]: Found error trace [2018-06-20 23:13:13,822 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:13:13,822 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:13:13,822 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-20 23:13:13,822 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:13:13,822 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:13:13,823 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:13:13,823 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 23:13:13,823 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:13:13,952 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:13:14,419 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-20 23:13:14,420 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-20 23:13:14,420 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 [2018-06-20 23:13:14,432 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-20 23:13:14,533 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-20 23:13:14,533 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:13:14,542 INFO ]: Computing forward predicates... [2018-06-20 23:13:15,027 WARN ]: Spent 120.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-06-20 23:13:15,683 WARN ]: Spent 197.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-06-20 23:13:15,968 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-20 23:13:15,989 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-20 23:13:15,989 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-20 23:13:15,989 INFO ]: Interpolant automaton has 12 states [2018-06-20 23:13:15,989 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-20 23:13:15,989 INFO ]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-06-20 23:13:15,990 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-20 23:13:16,218 WARN ]: Spent 150.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2018-06-20 23:13:16,344 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-20 23:13:16,344 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-20 23:13:16,344 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-20 23:13:16,344 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-20 23:13:16,345 INFO ]: Finished accepts. some prefix is accepted. [2018-06-20 23:13:16,345 INFO ]: With dead ends: 17 [2018-06-20 23:13:16,345 INFO ]: Without dead ends: 17 [2018-06-20 23:13:16,346 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2018-06-20 23:13:16,346 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-20 23:13:16,348 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-20 23:13:16,348 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-20 23:13:16,349 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-20 23:13:16,349 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-20 23:13:16,349 INFO ]: Finished accepts. word is rejected. [2018-06-20 23:13:16,349 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-20 23:13:16,349 INFO ]: Interpolant automaton has 12 states. [2018-06-20 23:13:16,349 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-20 23:13:16,350 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-20 23:13:16,350 INFO ]: Found error trace [2018-06-20 23:13:16,350 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:13:16,350 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:13:16,350 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-20 23:13:16,350 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:13:16,350 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:13:16,351 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:13:16,351 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-20 23:13:16,351 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:13:16,435 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:13:17,022 WARN ]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-06-20 23:13:17,108 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-20 23:13:17,108 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-20 23:13:17,108 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 [2018-06-20 23:13:17,116 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-20 23:13:17,245 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-20 23:13:17,245 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:13:17,256 INFO ]: Computing forward predicates... [2018-06-20 23:13:25,030 WARN ]: Spent 6.87 s on a formula simplification. DAG size of input: 225 DAG size of output: 113 [2018-06-20 23:13:28,120 WARN ]: Spent 2.36 s on a formula simplification. DAG size of input: 109 DAG size of output: 24 [2018-06-20 23:13:28,263 INFO ]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-20 23:13:28,293 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-20 23:13:28,293 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-20 23:13:28,294 INFO ]: Interpolant automaton has 16 states [2018-06-20 23:13:28,294 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-20 23:13:28,294 INFO ]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-06-20 23:13:28,294 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-20 23:13:28,851 WARN ]: Spent 521.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 133 [2018-06-20 23:13:29,250 WARN ]: Spent 350.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 120 [2018-06-20 23:13:29,799 WARN ]: Spent 512.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 122 [2018-06-20 23:13:30,420 WARN ]: Spent 570.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2018-06-20 23:13:30,452 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-20 23:13:30,452 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-20 23:13:30,453 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-20 23:13:30,453 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-20 23:13:30,454 INFO ]: Finished accepts. some prefix is accepted. [2018-06-20 23:13:30,454 INFO ]: With dead ends: 19 [2018-06-20 23:13:30,454 INFO ]: Without dead ends: 19 [2018-06-20 23:13:30,455 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-06-20 23:13:30,455 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-20 23:13:30,458 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-20 23:13:30,458 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-20 23:13:30,459 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-20 23:13:30,459 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-20 23:13:30,459 INFO ]: Finished accepts. word is rejected. [2018-06-20 23:13:30,459 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-20 23:13:30,459 INFO ]: Interpolant automaton has 16 states. [2018-06-20 23:13:30,459 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-20 23:13:30,460 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-20 23:13:30,460 INFO ]: Found error trace [2018-06-20 23:13:30,460 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:13:30,460 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:13:30,461 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-20 23:13:30,461 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:13:30,461 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:13:30,463 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:13:30,463 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-20 23:13:30,463 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:13:30,639 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:13:31,293 WARN ]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-06-20 23:13:31,396 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-20 23:13:31,396 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-20 23:13:31,396 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 [2018-06-20 23:13:31,404 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-20 23:13:31,552 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-20 23:13:31,552 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:13:31,565 INFO ]: Computing forward predicates... [2018-06-20 23:13:32,713 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2018-06-20 23:13:33,293 WARN ]: Spent 193.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-06-20 23:13:33,348 INFO ]: Checked inductivity of 36 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-20 23:13:33,369 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-20 23:13:33,369 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2018-06-20 23:13:33,370 INFO ]: Interpolant automaton has 19 states [2018-06-20 23:13:33,370 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-20 23:13:33,370 INFO ]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2018-06-20 23:13:33,370 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 19 states. [2018-06-20 23:13:33,713 WARN ]: Spent 309.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2018-06-20 23:13:34,101 WARN ]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2018-06-20 23:13:34,361 WARN ]: Spent 228.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2018-06-20 23:13:34,502 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-20 23:13:34,502 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-20 23:13:34,506 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-20 23:13:34,506 INFO ]: Start accepts. Automaton has 19 states. Word has length 25 [2018-06-20 23:13:34,507 INFO ]: Finished accepts. some prefix is accepted. [2018-06-20 23:13:34,507 INFO ]: With dead ends: 21 [2018-06-20 23:13:34,507 INFO ]: Without dead ends: 21 [2018-06-20 23:13:34,507 INFO ]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2018-06-20 23:13:34,508 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-20 23:13:34,510 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-20 23:13:34,510 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-20 23:13:34,511 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-20 23:13:34,511 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-20 23:13:34,511 INFO ]: Finished accepts. word is rejected. [2018-06-20 23:13:34,511 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-20 23:13:34,511 INFO ]: Interpolant automaton has 19 states. [2018-06-20 23:13:34,511 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-20 23:13:34,512 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-20 23:13:34,512 INFO ]: Found error trace [2018-06-20 23:13:34,512 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:13:34,512 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:13:34,512 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-20 23:13:34,512 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:13:34,512 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:13:34,513 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:13:34,513 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-20 23:13:34,513 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:13:34,737 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:13:35,701 WARN ]: Spent 424.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 34 [2018-06-20 23:13:35,839 WARN ]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2018-06-20 23:13:36,116 WARN ]: Spent 146.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2018-06-20 23:13:36,140 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-20 23:13:36,140 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-20 23:13:36,140 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-20 23:13:36,146 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-20 23:13:36,397 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-20 23:13:36,398 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:13:36,412 INFO ]: Computing forward predicates... [2018-06-20 23:13:39,108 WARN ]: Spent 2.19 s on a formula simplification. DAG size of input: 299 DAG size of output: 112 [2018-06-20 23:13:44,880 WARN ]: Spent 5.23 s on a formula simplification. DAG size of input: 358 DAG size of output: 201 [2018-06-20 23:13:54,653 WARN ]: Spent 8.80 s on a formula simplification. DAG size of input: 507 DAG size of output: 203 [2018-06-20 23:14:02,849 WARN ]: Spent 7.22 s on a formula simplification. DAG size of input: 430 DAG size of output: 205 [2018-06-20 23:14:03,665 WARN ]: Spent 325.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 35 [2018-06-20 23:14:03,962 INFO ]: Checked inductivity of 55 backedges. 5 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-20 23:14:03,983 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-20 23:14:03,983 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2018-06-20 23:14:03,983 INFO ]: Interpolant automaton has 24 states [2018-06-20 23:14:03,983 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-20 23:14:03,983 INFO ]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-06-20 23:14:03,983 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 24 states. [2018-06-20 23:14:06,657 WARN ]: Spent 2.60 s on a formula simplification. DAG size of input: 279 DAG size of output: 212 [2018-06-20 23:14:07,218 WARN ]: Spent 471.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 40 [2018-06-20 23:14:07,791 WARN ]: Spent 510.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 40 [2018-06-20 23:14:08,518 WARN ]: Spent 644.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 48 Received shutdown request... [2018-06-20 23:14:08,733 WARN ]: Removed 71 from assertion stack [2018-06-20 23:14:08,733 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-20 23:14:08,733 WARN ]: Verification canceled [2018-06-20 23:14:08,737 WARN ]: Timeout [2018-06-20 23:14:08,737 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 11:14:08 BoogieIcfgContainer [2018-06-20 23:14:08,737 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-20 23:14:08,738 INFO ]: Toolchain (without parser) took 58176.71 ms. Allocated memory was 306.7 MB in the beginning and 1.2 GB in the end (delta: 852.0 MB). Free memory was 245.1 MB in the beginning and 371.4 MB in the end (delta: -126.2 MB). Peak memory consumption was 725.7 MB. Max. memory is 7.1 GB. [2018-06-20 23:14:08,738 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2018-06-20 23:14:08,739 INFO ]: ChcToBoogie took 55.69 ms. Allocated memory is still 306.7 MB. Free memory was 243.2 MB in the beginning and 241.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2018-06-20 23:14:08,739 INFO ]: Boogie Preprocessor took 61.89 ms. Allocated memory is still 306.7 MB. Free memory was 241.2 MB in the beginning and 237.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2018-06-20 23:14:08,739 INFO ]: RCFGBuilder took 392.04 ms. Allocated memory is still 306.7 MB. Free memory was 237.2 MB in the beginning and 209.2 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2018-06-20 23:14:08,740 INFO ]: TraceAbstraction took 57658.61 ms. Allocated memory was 306.7 MB in the beginning and 1.2 GB in the end (delta: 852.0 MB). Free memory was 209.2 MB in the beginning and 371.4 MB in the end (delta: -162.2 MB). Peak memory consumption was 689.8 MB. Max. memory is 7.1 GB. [2018-06-20 23:14:08,752 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 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * ChcToBoogie took 55.69 ms. Allocated memory is still 306.7 MB. Free memory was 243.2 MB in the beginning and 241.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.89 ms. Allocated memory is still 306.7 MB. Free memory was 241.2 MB in the beginning and 237.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 392.04 ms. Allocated memory is still 306.7 MB. Free memory was 237.2 MB in the beginning and 209.2 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 57658.61 ms. Allocated memory was 306.7 MB in the beginning and 1.2 GB in the end (delta: 852.0 MB). Free memory was 209.2 MB in the beginning and 371.4 MB in the end (delta: -162.2 MB). Peak memory consumption was 689.8 MB. Max. memory is 7.1 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 constructing difference of abstraction (21states) and interpolant automaton (currently 8 states, 24 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 299. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 57.5s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 8.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 65 SDtfs, 114 SDslu, 251 SDs, 0 SdLazy, 222 SolverSat, 147 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 174 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 48.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=5, 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, 1.3s SatisfiabilityAnalysisTime, 46.6s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 164828 SizeOfPredicates, 2093 NumberOfNonLiveVariables, 1945 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 79/250 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/chc-lra-0085.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-20_23-14-08-766.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/chc-lra-0085.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-20_23-14-08-766.csv Completed graceful shutdown