java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/cav12/mem_slave_tlm.3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:25:52,957 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:25:52,959 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:25:52,972 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:25:52,972 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:25:52,973 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:25:52,977 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:25:52,978 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:25:52,980 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:25:52,981 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:25:52,982 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:25:52,984 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:25:52,985 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:25:52,986 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:25:52,987 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:25:52,990 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:25:52,993 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:25:52,995 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:25:52,996 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:25:52,997 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:25:52,998 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:25:53,001 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:25:53,001 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:25:53,001 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:25:53,002 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:25:53,003 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:25:53,004 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:25:53,005 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:25:53,006 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:25:53,007 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:25:53,007 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:25:53,008 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:25:53,008 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:25:53,009 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:25:53,010 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:25:53,010 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:25:53,032 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:25:53,032 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:25:53,032 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:25:53,033 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:25:53,040 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:25:53,040 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:25:53,041 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:25:53,041 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:25:53,041 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:25:53,041 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:25:53,041 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:25:53,042 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:25:53,042 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:25:53,042 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:25:53,042 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:25:53,042 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:25:53,043 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:25:53,044 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:25:53,044 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:25:53,094 INFO ]: Repository-Root is: /tmp [2018-06-22 04:25:53,111 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:25:53,115 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:25:53,116 INFO ]: Initializing SmtParser... [2018-06-22 04:25:53,116 INFO ]: SmtParser initialized [2018-06-22 04:25:53,117 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/mem_slave_tlm.3.smt2 [2018-06-22 04:25:53,118 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 04:25:53,214 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/mem_slave_tlm.3.smt2 unknown [2018-06-22 04:25:54,317 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/mem_slave_tlm.3.smt2 [2018-06-22 04:25:54,321 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:25:54,329 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:25:54,330 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:25:54,330 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:25:54,330 INFO ]: ChcToBoogie initialized [2018-06-22 04:25:54,333 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:25:54" (1/1) ... [2018-06-22 04:25:54,424 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:25:54 Unit [2018-06-22 04:25:54,424 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:25:54,425 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:25:54,425 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:25:54,425 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:25:54,461 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:25:54" (1/1) ... [2018-06-22 04:25:54,462 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:25:54" (1/1) ... [2018-06-22 04:25:54,484 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:25:54" (1/1) ... [2018-06-22 04:25:54,485 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:25:54" (1/1) ... [2018-06-22 04:25:54,528 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:25:54" (1/1) ... [2018-06-22 04:25:54,529 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:25:54" (1/1) ... [2018-06-22 04:25:54,534 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:25:54" (1/1) ... [2018-06-22 04:25:54,547 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:25:54,548 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:25:54,548 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:25:54,548 INFO ]: RCFGBuilder initialized [2018-06-22 04:25:54,556 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:25:54" (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 04:25:54,569 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:25:54,569 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:25:54,569 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:25:54,569 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:25:54,569 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:25:54,569 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 04:25:55,317 INFO ]: Using library mode [2018-06-22 04:25:55,318 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:25:55 BoogieIcfgContainer [2018-06-22 04:25:55,318 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:25:55,321 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:25:55,321 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:25:55,324 INFO ]: TraceAbstraction initialized [2018-06-22 04:25:55,324 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:25:54" (1/3) ... [2018-06-22 04:25:55,325 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3052a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:25:55, skipping insertion in model container [2018-06-22 04:25:55,325 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:25:54" (2/3) ... [2018-06-22 04:25:55,325 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3052a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:25:55, skipping insertion in model container [2018-06-22 04:25:55,326 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:25:55" (3/3) ... [2018-06-22 04:25:55,327 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:25:55,336 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:25:55,345 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:25:55,384 INFO ]: Using default assertion order modulation [2018-06-22 04:25:55,385 INFO ]: Interprodecural is true [2018-06-22 04:25:55,385 INFO ]: Hoare is false [2018-06-22 04:25:55,385 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:25:55,385 INFO ]: Backedges is TWOTRACK [2018-06-22 04:25:55,385 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:25:55,385 INFO ]: Difference is false [2018-06-22 04:25:55,385 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:25:55,385 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:25:55,398 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:25:55,410 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:25:55,410 INFO ]: Found error trace [2018-06-22 04:25:55,412 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:25:55,413 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:25:55,418 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 04:25:55,420 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:25:55,420 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:25:55,456 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:25:55,456 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:25:55,456 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:25:55,535 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:25:55,674 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:25:55,677 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:25:55,677 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:25:55,679 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:25:55,690 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:25:55,690 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:25:55,692 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:25:55,814 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:25:55,815 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:25:55,816 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:25:55,817 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:25:55,818 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:25:55,828 INFO ]: With dead ends: 9 [2018-06-22 04:25:55,828 INFO ]: Without dead ends: 9 [2018-06-22 04:25:55,829 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:25:55,847 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:25:55,866 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:25:55,867 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:25:55,868 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:25:55,869 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:25:55,869 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:25:55,869 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:25:55,869 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:25:55,869 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:25:55,869 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:25:55,869 INFO ]: Found error trace [2018-06-22 04:25:55,869 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:25:55,870 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:25:55,870 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 04:25:55,870 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:25:55,870 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:25:55,871 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:25:55,871 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:25:55,871 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:25:56,062 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:25:56,396 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:25:56,396 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:25:56,396 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:25:56,404 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:25:56,616 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:25:56,638 INFO ]: Computing forward predicates... [2018-06-22 04:25:56,915 WARN ]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:25:57,450 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:25:57,477 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:25:57,477 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 04:25:57,477 INFO ]: Interpolant automaton has 6 states [2018-06-22 04:25:57,478 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 04:25:57,478 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 04:25:57,478 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 04:25:57,744 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:25:57,744 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 04:25:57,745 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 04:25:57,745 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 04:25:57,746 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:25:57,746 INFO ]: With dead ends: 10 [2018-06-22 04:25:57,746 INFO ]: Without dead ends: 10 [2018-06-22 04:25:57,747 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-06-22 04:25:57,747 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 04:25:57,748 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 04:25:57,748 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 04:25:57,748 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 04:25:57,748 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 04:25:57,748 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:25:57,748 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 04:25:57,748 INFO ]: Interpolant automaton has 6 states. [2018-06-22 04:25:57,749 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 04:25:57,749 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 04:25:57,749 INFO ]: Found error trace [2018-06-22 04:25:57,749 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:25:57,749 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:25:57,749 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 04:25:57,749 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:25:57,749 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:25:57,752 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:25:57,752 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:25:57,752 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:25:58,000 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:25:58,417 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:25:58,417 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:25:58,417 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:25:58,456 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:25:58,722 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:25:58,722 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:25:58,734 INFO ]: Computing forward predicates... [2018-06-22 04:25:59,457 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:25:59,478 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:25:59,478 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 04:25:59,478 INFO ]: Interpolant automaton has 8 states [2018-06-22 04:25:59,478 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 04:25:59,479 INFO ]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-06-22 04:25:59,479 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-22 04:25:59,955 WARN ]: Spent 355.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-06-22 04:25:59,992 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:25:59,992 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 04:25:59,993 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 04:25:59,993 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-22 04:25:59,993 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:25:59,993 INFO ]: With dead ends: 12 [2018-06-22 04:25:59,993 INFO ]: Without dead ends: 12 [2018-06-22 04:25:59,994 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-06-22 04:25:59,994 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 04:25:59,995 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 04:25:59,995 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 04:25:59,995 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 04:25:59,995 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-06-22 04:25:59,995 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:25:59,995 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 04:25:59,995 INFO ]: Interpolant automaton has 8 states. [2018-06-22 04:25:59,995 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 04:25:59,996 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 04:25:59,996 INFO ]: Found error trace [2018-06-22 04:25:59,996 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:25:59,996 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:25:59,996 INFO ]: Analyzing trace with hash -1433955954, now seen corresponding path program 3 times [2018-06-22 04:25:59,996 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:25:59,996 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:25:59,997 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:25:59,997 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:25:59,997 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:26:00,235 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:26:00,765 WARN ]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:26:01,064 WARN ]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 04:26:01,461 WARN ]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-06-22 04:26:01,648 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:26:01,648 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:26:01,648 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:26:01,697 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:26:02,002 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 04:26:02,003 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:26:02,026 INFO ]: Computing forward predicates... [2018-06-22 04:26:06,347 WARN ]: Spent 1.46 s on a formula simplification. DAG size of input: 60 DAG size of output: 30 [2018-06-22 04:26:09,569 WARN ]: Spent 545.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 26 [2018-06-22 04:26:10,269 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:26:10,292 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:26:10,292 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-06-22 04:26:10,293 INFO ]: Interpolant automaton has 12 states [2018-06-22 04:26:10,293 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 04:26:10,293 INFO ]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-06-22 04:26:10,293 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2018-06-22 04:26:10,603 WARN ]: Spent 169.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2018-06-22 04:26:10,713 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:26:10,713 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 04:26:10,715 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 04:26:10,715 INFO ]: Start accepts. Automaton has 12 states. Word has length 11 [2018-06-22 04:26:10,715 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:26:10,715 INFO ]: With dead ends: 13 [2018-06-22 04:26:10,715 INFO ]: Without dead ends: 13 [2018-06-22 04:26:10,715 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2018-06-22 04:26:10,715 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 04:26:10,716 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 04:26:10,716 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 04:26:10,717 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 04:26:10,717 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-22 04:26:10,718 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:26:10,718 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 04:26:10,718 INFO ]: Interpolant automaton has 12 states. [2018-06-22 04:26:10,718 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 04:26:10,718 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 04:26:10,718 INFO ]: Found error trace [2018-06-22 04:26:10,718 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:26:10,718 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:26:10,718 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 4 times [2018-06-22 04:26:10,718 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:26:10,718 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:26:10,719 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:26:10,719 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:26:10,719 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:26:10,923 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:26:11,412 WARN ]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:26:11,738 WARN ]: Spent 276.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2018-06-22 04:26:11,864 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:26:11,864 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:26:11,864 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 04:26:11,880 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:26:12,283 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 04:26:12,283 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:26:12,303 INFO ]: Computing forward predicates... [2018-06-22 04:26:15,551 WARN ]: Spent 194.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 22 [2018-06-22 04:26:15,848 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:26:15,870 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:26:15,870 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 04:26:15,870 INFO ]: Interpolant automaton has 14 states [2018-06-22 04:26:15,870 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 04:26:15,870 INFO ]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2018-06-22 04:26:15,871 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-22 04:26:15,967 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:26:15,967 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 04:26:15,969 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 04:26:15,969 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-22 04:26:15,969 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:26:15,970 INFO ]: With dead ends: 14 [2018-06-22 04:26:15,970 INFO ]: Without dead ends: 14 [2018-06-22 04:26:15,970 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2018-06-22 04:26:15,970 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 04:26:15,971 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 04:26:15,971 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 04:26:15,972 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 04:26:15,972 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-22 04:26:15,972 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:26:15,972 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 04:26:15,972 INFO ]: Interpolant automaton has 14 states. [2018-06-22 04:26:15,972 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 04:26:15,972 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 04:26:15,972 INFO ]: Found error trace [2018-06-22 04:26:15,972 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:26:15,972 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:26:15,972 INFO ]: Analyzing trace with hash 679342766, now seen corresponding path program 5 times [2018-06-22 04:26:15,972 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:26:15,972 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:26:15,973 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:26:15,973 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:26:15,973 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:26:16,191 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:26:16,724 WARN ]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:26:17,338 WARN ]: Spent 560.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 13 [2018-06-22 04:26:17,665 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:26:17,665 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:26:17,665 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 [2018-06-22 04:26:17,673 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 04:26:18,099 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-22 04:26:18,099 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:26:18,126 INFO ]: Computing forward predicates... [2018-06-22 04:26:28,049 WARN ]: Spent 178.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 35 [2018-06-22 04:26:28,870 WARN ]: Spent 165.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 28 [2018-06-22 04:26:31,833 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:26:31,856 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:26:31,856 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-06-22 04:26:31,856 INFO ]: Interpolant automaton has 16 states [2018-06-22 04:26:31,856 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 04:26:31,856 INFO ]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2018-06-22 04:26:31,856 INFO ]: Start difference. First operand 14 states and 14 transitions. Second operand 16 states. [2018-06-22 04:26:32,097 WARN ]: Spent 170.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2018-06-22 04:26:32,262 WARN ]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-06-22 04:26:32,504 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:26:32,504 INFO ]: Finished difference Result 16 states and 16 transitions. [2018-06-22 04:26:32,507 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 04:26:32,507 INFO ]: Start accepts. Automaton has 16 states. Word has length 13 [2018-06-22 04:26:32,507 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:26:32,507 INFO ]: With dead ends: 16 [2018-06-22 04:26:32,507 INFO ]: Without dead ends: 16 [2018-06-22 04:26:32,508 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2018-06-22 04:26:32,508 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-22 04:26:32,509 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-22 04:26:32,509 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-22 04:26:32,510 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-06-22 04:26:32,510 INFO ]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-06-22 04:26:32,510 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:26:32,510 INFO ]: Abstraction has 16 states and 16 transitions. [2018-06-22 04:26:32,510 INFO ]: Interpolant automaton has 16 states. [2018-06-22 04:26:32,510 INFO ]: Start isEmpty. Operand 16 states and 16 transitions. [2018-06-22 04:26:32,510 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-22 04:26:32,510 INFO ]: Found error trace [2018-06-22 04:26:32,510 INFO ]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:26:32,510 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:26:32,510 INFO ]: Analyzing trace with hash 39881678, now seen corresponding path program 6 times [2018-06-22 04:26:32,510 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:26:32,510 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:26:32,512 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:26:32,512 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:26:32,512 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:26:32,987 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:26:33,654 WARN ]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:26:33,969 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2018-06-22 04:26:34,106 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2018-06-22 04:26:34,313 WARN ]: Spent 191.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2018-06-22 04:26:34,430 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:26:34,430 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:26:34,430 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:26:34,435 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 04:26:35,029 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-06-22 04:26:35,029 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:26:35,064 INFO ]: Computing forward predicates... [2018-06-22 04:26:36,612 WARN ]: Spent 260.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2018-06-22 04:26:37,929 WARN ]: Spent 417.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 46 [2018-06-22 04:26:39,008 WARN ]: Spent 613.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 47 [2018-06-22 04:26:41,011 WARN ]: Spent 910.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 64 [2018-06-22 04:26:44,784 WARN ]: Spent 1.54 s on a formula simplification. DAG size of input: 302 DAG size of output: 57 [2018-06-22 04:26:51,138 WARN ]: Spent 2.29 s on a formula simplification. DAG size of input: 385 DAG size of output: 47 [2018-06-22 04:26:53,261 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:26:53,287 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:26:53,287 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-06-22 04:26:53,287 INFO ]: Interpolant automaton has 20 states [2018-06-22 04:26:53,287 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 04:26:53,287 INFO ]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2018-06-22 04:26:53,287 INFO ]: Start difference. First operand 16 states and 16 transitions. Second operand 20 states. Received shutdown request... [2018-06-22 04:26:53,327 WARN ]: Removed 4 from assertion stack [2018-06-22 04:26:53,328 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 04:26:53,328 WARN ]: Verification canceled [2018-06-22 04:26:53,333 WARN ]: Timeout [2018-06-22 04:26:53,333 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:26:53 BoogieIcfgContainer [2018-06-22 04:26:53,333 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:26:53,334 INFO ]: Toolchain (without parser) took 59012.53 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 194.4 MB in the beginning and 148.1 MB in the end (delta: 46.4 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 04:26:53,335 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:26:53,335 INFO ]: ChcToBoogie took 95.00 ms. Allocated memory is still 308.8 MB. Free memory was 194.4 MB in the beginning and 191.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:26:53,335 INFO ]: Boogie Preprocessor took 122.17 ms. Allocated memory was 308.8 MB in the beginning and 323.5 MB in the end (delta: 14.7 MB). Free memory was 191.4 MB in the beginning and 293.9 MB in the end (delta: -102.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 3.6 GB. [2018-06-22 04:26:53,335 INFO ]: RCFGBuilder took 770.03 ms. Allocated memory is still 323.5 MB. Free memory was 293.9 MB in the beginning and 226.8 MB in the end (delta: 67.1 MB). Peak memory consumption was 67.1 MB. Max. memory is 3.6 GB. [2018-06-22 04:26:53,336 INFO ]: TraceAbstraction took 58011.87 ms. Allocated memory was 323.5 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 225.3 MB in the beginning and 148.1 MB in the end (delta: 77.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 04:26:53,338 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 308.8 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 95.00 ms. Allocated memory is still 308.8 MB. Free memory was 194.4 MB in the beginning and 191.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 122.17 ms. Allocated memory was 308.8 MB in the beginning and 323.5 MB in the end (delta: 14.7 MB). Free memory was 191.4 MB in the beginning and 293.9 MB in the end (delta: -102.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 3.6 GB. * RCFGBuilder took 770.03 ms. Allocated memory is still 323.5 MB. Free memory was 293.9 MB in the beginning and 226.8 MB in the end (delta: 67.1 MB). Peak memory consumption was 67.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 58011.87 ms. Allocated memory was 323.5 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 225.3 MB in the beginning and 148.1 MB in the end (delta: 77.2 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 constructing difference of abstraction (16states) and interpolant automaton (currently 2 states, 20 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 59. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 57.9s OverallTime, 7 OverallIterations, 8 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 45 SDtfs, 10 SDslu, 184 SDs, 0 SdLazy, 64 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 15.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=6, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 51.5s InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 32699 SizeOfPredicates, 22 NumberOfNonLiveVariables, 5206 ConjunctsInSsa, 302 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 0/172 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/mem_slave_tlm.3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-26-53-348.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mem_slave_tlm.3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-26-53-348.csv Completed graceful shutdown