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/eldarica-misc/LIA/HOLA/30.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:02:24,945 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:02:24,948 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:02:24,962 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:02:24,962 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:02:24,963 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:02:24,964 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:02:24,968 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:02:24,969 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:02:24,970 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:02:24,972 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:02:24,972 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:02:24,973 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:02:24,974 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:02:24,975 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:02:24,975 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:02:24,979 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:02:24,980 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:02:24,990 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:02:24,991 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:02:24,992 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:02:24,994 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:02:24,994 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:02:24,994 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:02:24,998 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:02:24,998 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:02:24,999 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:02:25,000 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:02:25,001 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:02:25,002 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:02:25,003 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:02:25,004 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:02:25,004 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:02:25,004 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:02:25,005 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:02:25,005 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:02:25,021 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:02:25,022 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:02:25,022 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:02:25,022 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:02:25,023 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:02:25,024 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:02:25,025 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:02:25,025 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:02:25,025 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:02:25,026 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:02:25,026 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:02:25,026 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:02:25,026 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:02:25,026 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:02:25,027 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:02:25,027 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:02:25,027 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:02:25,029 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:02:25,030 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:02:25,078 INFO ]: Repository-Root is: /tmp [2018-06-22 01:02:25,089 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:02:25,094 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:02:25,096 INFO ]: Initializing SmtParser... [2018-06-22 01:02:25,096 INFO ]: SmtParser initialized [2018-06-22 01:02:25,097 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/30.c.smt2 [2018-06-22 01:02:25,098 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 01:02:25,184 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/30.c.smt2 unknown [2018-06-22 01:02:25,434 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/30.c.smt2 [2018-06-22 01:02:25,444 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:02:25,450 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:02:25,451 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:02:25,451 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:02:25,451 INFO ]: ChcToBoogie initialized [2018-06-22 01:02:25,455 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:02:25" (1/1) ... [2018-06-22 01:02:25,514 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:25 Unit [2018-06-22 01:02:25,514 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:02:25,514 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:02:25,514 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:02:25,514 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:02:25,535 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:25" (1/1) ... [2018-06-22 01:02:25,535 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:25" (1/1) ... [2018-06-22 01:02:25,543 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:25" (1/1) ... [2018-06-22 01:02:25,543 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:25" (1/1) ... [2018-06-22 01:02:25,549 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:25" (1/1) ... [2018-06-22 01:02:25,550 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:25" (1/1) ... [2018-06-22 01:02:25,560 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:25" (1/1) ... [2018-06-22 01:02:25,562 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:02:25,562 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:02:25,562 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:02:25,562 INFO ]: RCFGBuilder initialized [2018-06-22 01:02:25,563 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:25" (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 01:02:25,583 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:02:25,583 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:02:25,583 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:02:25,583 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:02:25,583 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:02:25,583 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 01:02:26,004 INFO ]: Using library mode [2018-06-22 01:02:26,005 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:02:26 BoogieIcfgContainer [2018-06-22 01:02:26,005 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:02:26,006 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:02:26,006 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:02:26,010 INFO ]: TraceAbstraction initialized [2018-06-22 01:02:26,010 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:02:25" (1/3) ... [2018-06-22 01:02:26,011 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbf7eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:02:26, skipping insertion in model container [2018-06-22 01:02:26,011 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:25" (2/3) ... [2018-06-22 01:02:26,011 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbf7eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:02:26, skipping insertion in model container [2018-06-22 01:02:26,011 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:02:26" (3/3) ... [2018-06-22 01:02:26,013 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:02:26,022 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:02:26,033 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:02:26,073 INFO ]: Using default assertion order modulation [2018-06-22 01:02:26,074 INFO ]: Interprodecural is true [2018-06-22 01:02:26,074 INFO ]: Hoare is false [2018-06-22 01:02:26,074 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:02:26,074 INFO ]: Backedges is TWOTRACK [2018-06-22 01:02:26,074 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:02:26,074 INFO ]: Difference is false [2018-06-22 01:02:26,074 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:02:26,074 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:02:26,089 INFO ]: Start isEmpty. Operand 22 states. [2018-06-22 01:02:26,098 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 01:02:26,098 INFO ]: Found error trace [2018-06-22 01:02:26,099 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:02:26,099 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:26,102 INFO ]: Analyzing trace with hash 834841268, now seen corresponding path program 1 times [2018-06-22 01:02:26,104 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:26,104 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:26,136 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:26,136 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:02:26,136 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:26,190 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:26,628 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:26,630 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:02:26,630 INFO ]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-06-22 01:02:26,631 INFO ]: Interpolant automaton has 11 states [2018-06-22 01:02:26,644 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 01:02:26,644 INFO ]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-06-22 01:02:26,646 INFO ]: Start difference. First operand 22 states. Second operand 11 states. [2018-06-22 01:02:27,319 WARN ]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-06-22 01:02:27,479 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:02:27,479 INFO ]: Finished difference Result 28 states and 28 transitions. [2018-06-22 01:02:27,479 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 01:02:27,481 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-22 01:02:27,481 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:02:27,489 INFO ]: With dead ends: 28 [2018-06-22 01:02:27,489 INFO ]: Without dead ends: 25 [2018-06-22 01:02:27,491 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2018-06-22 01:02:27,509 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 01:02:27,542 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 22. [2018-06-22 01:02:27,544 INFO ]: Start removeUnreachable. Operand 22 states. [2018-06-22 01:02:27,545 INFO ]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-06-22 01:02:27,546 INFO ]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 17 [2018-06-22 01:02:27,546 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:02:27,546 INFO ]: Abstraction has 22 states and 22 transitions. [2018-06-22 01:02:27,546 INFO ]: Interpolant automaton has 11 states. [2018-06-22 01:02:27,546 INFO ]: Start isEmpty. Operand 22 states and 22 transitions. [2018-06-22 01:02:27,547 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 01:02:27,547 INFO ]: Found error trace [2018-06-22 01:02:27,547 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:02:27,547 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:27,547 INFO ]: Analyzing trace with hash 1409068108, now seen corresponding path program 1 times [2018-06-22 01:02:27,547 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:27,547 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:27,549 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:27,549 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:02:27,549 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:27,594 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:27,837 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:27,837 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:02:27,837 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 01:02:27,849 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:02:27,898 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:27,906 INFO ]: Computing forward predicates... [2018-06-22 01:02:28,495 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:28,519 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:02:28,520 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 24 [2018-06-22 01:02:28,520 INFO ]: Interpolant automaton has 24 states [2018-06-22 01:02:28,520 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 01:02:28,521 INFO ]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2018-06-22 01:02:28,521 INFO ]: Start difference. First operand 22 states and 22 transitions. Second operand 24 states. [2018-06-22 01:02:29,132 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:02:29,132 INFO ]: Finished difference Result 32 states and 32 transitions. [2018-06-22 01:02:29,133 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-06-22 01:02:29,133 INFO ]: Start accepts. Automaton has 24 states. Word has length 21 [2018-06-22 01:02:29,133 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:02:29,133 INFO ]: With dead ends: 32 [2018-06-22 01:02:29,133 INFO ]: Without dead ends: 29 [2018-06-22 01:02:29,134 INFO ]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=301, Invalid=1181, Unknown=0, NotChecked=0, Total=1482 [2018-06-22 01:02:29,135 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-22 01:02:29,138 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 26. [2018-06-22 01:02:29,138 INFO ]: Start removeUnreachable. Operand 26 states. [2018-06-22 01:02:29,139 INFO ]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-06-22 01:02:29,139 INFO ]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 21 [2018-06-22 01:02:29,139 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:02:29,139 INFO ]: Abstraction has 26 states and 26 transitions. [2018-06-22 01:02:29,139 INFO ]: Interpolant automaton has 24 states. [2018-06-22 01:02:29,139 INFO ]: Start isEmpty. Operand 26 states and 26 transitions. [2018-06-22 01:02:29,140 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 01:02:29,140 INFO ]: Found error trace [2018-06-22 01:02:29,140 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:02:29,140 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:29,140 INFO ]: Analyzing trace with hash -542367260, now seen corresponding path program 2 times [2018-06-22 01:02:29,140 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:29,140 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:29,141 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:29,141 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:02:29,141 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:29,166 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:29,333 INFO ]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:29,333 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:02:29,333 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 01:02:29,347 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 01:02:29,383 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 01:02:29,383 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:29,386 INFO ]: Computing forward predicates... [2018-06-22 01:02:29,469 INFO ]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:29,491 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:02:29,491 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2018-06-22 01:02:29,491 INFO ]: Interpolant automaton has 22 states [2018-06-22 01:02:29,491 INFO ]: Constructing interpolant automaton starting with 22 interpolants. [2018-06-22 01:02:29,491 INFO ]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2018-06-22 01:02:29,492 INFO ]: Start difference. First operand 26 states and 26 transitions. Second operand 22 states. [2018-06-22 01:02:30,112 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:02:30,112 INFO ]: Finished difference Result 36 states and 36 transitions. [2018-06-22 01:02:30,113 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-06-22 01:02:30,113 INFO ]: Start accepts. Automaton has 22 states. Word has length 25 [2018-06-22 01:02:30,113 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:02:30,114 INFO ]: With dead ends: 36 [2018-06-22 01:02:30,114 INFO ]: Without dead ends: 33 [2018-06-22 01:02:30,114 INFO ]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=975, Unknown=0, NotChecked=0, Total=1260 [2018-06-22 01:02:30,115 INFO ]: Start minimizeSevpa. Operand 33 states. [2018-06-22 01:02:30,117 INFO ]: Finished minimizeSevpa. Reduced states from 33 to 30. [2018-06-22 01:02:30,117 INFO ]: Start removeUnreachable. Operand 30 states. [2018-06-22 01:02:30,118 INFO ]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-06-22 01:02:30,118 INFO ]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 25 [2018-06-22 01:02:30,118 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:02:30,118 INFO ]: Abstraction has 30 states and 30 transitions. [2018-06-22 01:02:30,118 INFO ]: Interpolant automaton has 22 states. [2018-06-22 01:02:30,118 INFO ]: Start isEmpty. Operand 30 states and 30 transitions. [2018-06-22 01:02:30,119 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 01:02:30,119 INFO ]: Found error trace [2018-06-22 01:02:30,119 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:02:30,119 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:30,119 INFO ]: Analyzing trace with hash 1962347388, now seen corresponding path program 3 times [2018-06-22 01:02:30,120 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:30,120 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:30,120 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:30,120 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:02:30,120 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:30,142 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:30,457 INFO ]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:30,457 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:02:30,457 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 01:02:30,464 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 01:02:30,566 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 01:02:30,566 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:30,571 INFO ]: Computing forward predicates... [2018-06-22 01:02:31,383 INFO ]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:31,403 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:02:31,435 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 40 [2018-06-22 01:02:31,435 INFO ]: Interpolant automaton has 40 states [2018-06-22 01:02:31,436 INFO ]: Constructing interpolant automaton starting with 40 interpolants. [2018-06-22 01:02:31,436 INFO ]: CoverageRelationStatistics Valid=118, Invalid=1442, Unknown=0, NotChecked=0, Total=1560 [2018-06-22 01:02:31,436 INFO ]: Start difference. First operand 30 states and 30 transitions. Second operand 40 states. [2018-06-22 01:02:32,521 WARN ]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-06-22 01:02:33,361 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:02:33,361 INFO ]: Finished difference Result 47 states and 47 transitions. [2018-06-22 01:02:33,361 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-06-22 01:02:33,361 INFO ]: Start accepts. Automaton has 40 states. Word has length 29 [2018-06-22 01:02:33,361 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:02:33,362 INFO ]: With dead ends: 47 [2018-06-22 01:02:33,362 INFO ]: Without dead ends: 41 [2018-06-22 01:02:33,364 INFO ]: 0 DeclaredPredicates, 78 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=782, Invalid=4048, Unknown=0, NotChecked=0, Total=4830 [2018-06-22 01:02:33,364 INFO ]: Start minimizeSevpa. Operand 41 states. [2018-06-22 01:02:33,370 INFO ]: Finished minimizeSevpa. Reduced states from 41 to 38. [2018-06-22 01:02:33,370 INFO ]: Start removeUnreachable. Operand 38 states. [2018-06-22 01:02:33,371 INFO ]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-06-22 01:02:33,371 INFO ]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 29 [2018-06-22 01:02:33,371 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:02:33,371 INFO ]: Abstraction has 38 states and 38 transitions. [2018-06-22 01:02:33,371 INFO ]: Interpolant automaton has 40 states. [2018-06-22 01:02:33,371 INFO ]: Start isEmpty. Operand 38 states and 38 transitions. [2018-06-22 01:02:33,372 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 01:02:33,372 INFO ]: Found error trace [2018-06-22 01:02:33,372 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:02:33,372 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:33,372 INFO ]: Analyzing trace with hash 771177132, now seen corresponding path program 4 times [2018-06-22 01:02:33,372 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:33,372 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:33,374 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:33,374 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:02:33,374 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:33,397 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:33,659 INFO ]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:33,659 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:02:33,659 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:02:33,665 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 01:02:33,737 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 01:02:33,737 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:33,743 INFO ]: Computing forward predicates... [2018-06-22 01:02:34,035 INFO ]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:34,068 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:02:34,068 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 34 [2018-06-22 01:02:34,068 INFO ]: Interpolant automaton has 34 states [2018-06-22 01:02:34,068 INFO ]: Constructing interpolant automaton starting with 34 interpolants. [2018-06-22 01:02:34,069 INFO ]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2018-06-22 01:02:34,069 INFO ]: Start difference. First operand 38 states and 38 transitions. Second operand 34 states. [2018-06-22 01:02:34,610 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:02:34,610 INFO ]: Finished difference Result 48 states and 48 transitions. [2018-06-22 01:02:34,611 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-06-22 01:02:34,611 INFO ]: Start accepts. Automaton has 34 states. Word has length 37 [2018-06-22 01:02:34,611 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:02:34,612 INFO ]: With dead ends: 48 [2018-06-22 01:02:34,612 INFO ]: Without dead ends: 45 [2018-06-22 01:02:34,612 INFO ]: 0 DeclaredPredicates, 89 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=822, Invalid=2718, Unknown=0, NotChecked=0, Total=3540 [2018-06-22 01:02:34,613 INFO ]: Start minimizeSevpa. Operand 45 states. [2018-06-22 01:02:34,616 INFO ]: Finished minimizeSevpa. Reduced states from 45 to 42. [2018-06-22 01:02:34,616 INFO ]: Start removeUnreachable. Operand 42 states. [2018-06-22 01:02:34,617 INFO ]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-06-22 01:02:34,617 INFO ]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 37 [2018-06-22 01:02:34,617 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:02:34,617 INFO ]: Abstraction has 42 states and 42 transitions. [2018-06-22 01:02:34,617 INFO ]: Interpolant automaton has 34 states. [2018-06-22 01:02:34,617 INFO ]: Start isEmpty. Operand 42 states and 42 transitions. [2018-06-22 01:02:34,618 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 01:02:34,618 INFO ]: Found error trace [2018-06-22 01:02:34,618 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:02:34,618 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:34,618 INFO ]: Analyzing trace with hash 49840196, now seen corresponding path program 5 times [2018-06-22 01:02:34,618 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:34,619 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:34,619 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:34,619 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:02:34,619 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:34,643 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:35,072 INFO ]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:35,072 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:02:35,072 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 01:02:35,078 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 01:02:35,159 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-06-22 01:02:35,159 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:35,164 INFO ]: Computing forward predicates... [2018-06-22 01:02:35,701 INFO ]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:35,720 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:02:35,721 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 38 [2018-06-22 01:02:35,721 INFO ]: Interpolant automaton has 38 states [2018-06-22 01:02:35,721 INFO ]: Constructing interpolant automaton starting with 38 interpolants. [2018-06-22 01:02:35,721 INFO ]: CoverageRelationStatistics Valid=174, Invalid=1232, Unknown=0, NotChecked=0, Total=1406 [2018-06-22 01:02:35,722 INFO ]: Start difference. First operand 42 states and 42 transitions. Second operand 38 states. [2018-06-22 01:02:36,841 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:02:36,841 INFO ]: Finished difference Result 52 states and 52 transitions. [2018-06-22 01:02:36,842 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-06-22 01:02:36,843 INFO ]: Start accepts. Automaton has 38 states. Word has length 41 [2018-06-22 01:02:36,843 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:02:36,844 INFO ]: With dead ends: 52 [2018-06-22 01:02:36,844 INFO ]: Without dead ends: 49 [2018-06-22 01:02:36,845 INFO ]: 0 DeclaredPredicates, 101 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1073, Invalid=3483, Unknown=0, NotChecked=0, Total=4556 [2018-06-22 01:02:36,845 INFO ]: Start minimizeSevpa. Operand 49 states. [2018-06-22 01:02:36,848 INFO ]: Finished minimizeSevpa. Reduced states from 49 to 46. [2018-06-22 01:02:36,848 INFO ]: Start removeUnreachable. Operand 46 states. [2018-06-22 01:02:36,850 INFO ]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-06-22 01:02:36,850 INFO ]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 41 [2018-06-22 01:02:36,850 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:02:36,850 INFO ]: Abstraction has 46 states and 46 transitions. [2018-06-22 01:02:36,850 INFO ]: Interpolant automaton has 38 states. [2018-06-22 01:02:36,850 INFO ]: Start isEmpty. Operand 46 states and 46 transitions. [2018-06-22 01:02:36,851 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 01:02:36,851 INFO ]: Found error trace [2018-06-22 01:02:36,851 INFO ]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:02:36,851 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:36,851 INFO ]: Analyzing trace with hash 1143814620, now seen corresponding path program 6 times [2018-06-22 01:02:36,851 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:36,852 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:36,852 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:36,852 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:02:36,852 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:36,872 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:37,696 INFO ]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:37,696 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:02:37,696 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 01:02:37,702 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 01:02:37,816 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-06-22 01:02:37,816 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:37,821 INFO ]: Computing forward predicates... [2018-06-22 01:02:38,021 INFO ]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:38,041 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:02:38,041 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 42 [2018-06-22 01:02:38,041 INFO ]: Interpolant automaton has 42 states [2018-06-22 01:02:38,041 INFO ]: Constructing interpolant automaton starting with 42 interpolants. [2018-06-22 01:02:38,042 INFO ]: CoverageRelationStatistics Valid=212, Invalid=1510, Unknown=0, NotChecked=0, Total=1722 [2018-06-22 01:02:38,042 INFO ]: Start difference. First operand 46 states and 46 transitions. Second operand 42 states. [2018-06-22 01:02:38,787 WARN ]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 01:02:39,197 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:02:39,197 INFO ]: Finished difference Result 56 states and 56 transitions. [2018-06-22 01:02:39,198 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-06-22 01:02:39,198 INFO ]: Start accepts. Automaton has 42 states. Word has length 45 [2018-06-22 01:02:39,198 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:02:39,199 INFO ]: With dead ends: 56 [2018-06-22 01:02:39,199 INFO ]: Without dead ends: 53 [2018-06-22 01:02:39,200 INFO ]: 0 DeclaredPredicates, 113 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1360, Invalid=4340, Unknown=0, NotChecked=0, Total=5700 [2018-06-22 01:02:39,200 INFO ]: Start minimizeSevpa. Operand 53 states. [2018-06-22 01:02:39,203 INFO ]: Finished minimizeSevpa. Reduced states from 53 to 50. [2018-06-22 01:02:39,203 INFO ]: Start removeUnreachable. Operand 50 states. [2018-06-22 01:02:39,203 INFO ]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-06-22 01:02:39,203 INFO ]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 45 [2018-06-22 01:02:39,203 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:02:39,203 INFO ]: Abstraction has 50 states and 50 transitions. [2018-06-22 01:02:39,203 INFO ]: Interpolant automaton has 42 states. [2018-06-22 01:02:39,203 INFO ]: Start isEmpty. Operand 50 states and 50 transitions. [2018-06-22 01:02:39,204 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-22 01:02:39,204 INFO ]: Found error trace [2018-06-22 01:02:39,204 INFO ]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:02:39,205 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:39,205 INFO ]: Analyzing trace with hash 45836148, now seen corresponding path program 7 times [2018-06-22 01:02:39,205 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:39,205 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:39,205 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:39,205 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:02:39,205 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:39,226 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:39,949 INFO ]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:39,949 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:02:39,949 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:02:39,956 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:02:40,028 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:40,033 INFO ]: Computing forward predicates... [2018-06-22 01:02:41,355 INFO ]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:41,375 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:02:41,375 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 43] total 80 [2018-06-22 01:02:41,375 INFO ]: Interpolant automaton has 80 states [2018-06-22 01:02:41,375 INFO ]: Constructing interpolant automaton starting with 80 interpolants. [2018-06-22 01:02:41,377 INFO ]: CoverageRelationStatistics Valid=450, Invalid=5870, Unknown=0, NotChecked=0, Total=6320 [2018-06-22 01:02:41,377 INFO ]: Start difference. First operand 50 states and 50 transitions. Second operand 80 states. [2018-06-22 01:02:44,043 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:02:44,043 INFO ]: Finished difference Result 60 states and 60 transitions. [2018-06-22 01:02:44,045 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-06-22 01:02:44,045 INFO ]: Start accepts. Automaton has 80 states. Word has length 49 [2018-06-22 01:02:44,046 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:02:44,046 INFO ]: With dead ends: 60 [2018-06-22 01:02:44,046 INFO ]: Without dead ends: 57 [2018-06-22 01:02:44,050 INFO ]: 0 DeclaredPredicates, 131 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4150 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1675, Invalid=13331, Unknown=0, NotChecked=0, Total=15006 [2018-06-22 01:02:44,050 INFO ]: Start minimizeSevpa. Operand 57 states. [2018-06-22 01:02:44,054 INFO ]: Finished minimizeSevpa. Reduced states from 57 to 54. [2018-06-22 01:02:44,054 INFO ]: Start removeUnreachable. Operand 54 states. [2018-06-22 01:02:44,054 INFO ]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-06-22 01:02:44,054 INFO ]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 49 [2018-06-22 01:02:44,055 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:02:44,055 INFO ]: Abstraction has 54 states and 54 transitions. [2018-06-22 01:02:44,055 INFO ]: Interpolant automaton has 80 states. [2018-06-22 01:02:44,055 INFO ]: Start isEmpty. Operand 54 states and 54 transitions. [2018-06-22 01:02:44,057 INFO ]: Finished isEmpty. Found accepting run of length 54 [2018-06-22 01:02:44,057 INFO ]: Found error trace [2018-06-22 01:02:44,057 INFO ]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:02:44,057 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:44,058 INFO ]: Analyzing trace with hash 1288243468, now seen corresponding path program 8 times [2018-06-22 01:02:44,058 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:44,058 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:44,058 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:44,058 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:02:44,058 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:44,080 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:45,253 INFO ]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:45,253 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:02:45,253 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:02:45,259 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 01:02:45,338 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 01:02:45,339 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:45,343 INFO ]: Computing forward predicates... [2018-06-22 01:02:45,513 INFO ]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:45,533 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:02:45,533 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 50 [2018-06-22 01:02:45,533 INFO ]: Interpolant automaton has 50 states [2018-06-22 01:02:45,534 INFO ]: Constructing interpolant automaton starting with 50 interpolants. [2018-06-22 01:02:45,534 INFO ]: CoverageRelationStatistics Valid=300, Invalid=2150, Unknown=0, NotChecked=0, Total=2450 [2018-06-22 01:02:45,534 INFO ]: Start difference. First operand 54 states and 54 transitions. Second operand 50 states. [2018-06-22 01:02:46,714 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:02:46,714 INFO ]: Finished difference Result 64 states and 64 transitions. [2018-06-22 01:02:46,715 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-06-22 01:02:46,715 INFO ]: Start accepts. Automaton has 50 states. Word has length 53 [2018-06-22 01:02:46,716 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:02:46,716 INFO ]: With dead ends: 64 [2018-06-22 01:02:46,716 INFO ]: Without dead ends: 61 [2018-06-22 01:02:46,718 INFO ]: 0 DeclaredPredicates, 137 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1761 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2042, Invalid=6330, Unknown=0, NotChecked=0, Total=8372 [2018-06-22 01:02:46,718 INFO ]: Start minimizeSevpa. Operand 61 states. [2018-06-22 01:02:46,726 INFO ]: Finished minimizeSevpa. Reduced states from 61 to 58. [2018-06-22 01:02:46,729 INFO ]: Start removeUnreachable. Operand 58 states. [2018-06-22 01:02:46,730 INFO ]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-06-22 01:02:46,730 INFO ]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 53 [2018-06-22 01:02:46,730 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:02:46,730 INFO ]: Abstraction has 58 states and 58 transitions. [2018-06-22 01:02:46,730 INFO ]: Interpolant automaton has 50 states. [2018-06-22 01:02:46,730 INFO ]: Start isEmpty. Operand 58 states and 58 transitions. [2018-06-22 01:02:46,731 INFO ]: Finished isEmpty. Found accepting run of length 58 [2018-06-22 01:02:46,731 INFO ]: Found error trace [2018-06-22 01:02:46,731 INFO ]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:02:46,731 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:46,731 INFO ]: Analyzing trace with hash -1384374620, now seen corresponding path program 9 times [2018-06-22 01:02:46,731 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:46,731 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:46,732 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:46,732 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:02:46,732 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:46,755 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:47,540 INFO ]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:47,540 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:02:47,540 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:02:47,546 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 01:02:47,631 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-06-22 01:02:47,631 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:47,636 INFO ]: Computing forward predicates... [2018-06-22 01:02:47,796 INFO ]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:47,815 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:02:47,815 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 54 [2018-06-22 01:02:47,815 INFO ]: Interpolant automaton has 54 states [2018-06-22 01:02:47,815 INFO ]: Constructing interpolant automaton starting with 54 interpolants. [2018-06-22 01:02:47,816 INFO ]: CoverageRelationStatistics Valid=350, Invalid=2512, Unknown=0, NotChecked=0, Total=2862 [2018-06-22 01:02:47,816 INFO ]: Start difference. First operand 58 states and 58 transitions. Second operand 54 states. [2018-06-22 01:02:49,217 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:02:49,217 INFO ]: Finished difference Result 68 states and 68 transitions. [2018-06-22 01:02:49,217 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-06-22 01:02:49,217 INFO ]: Start accepts. Automaton has 54 states. Word has length 57 [2018-06-22 01:02:49,217 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:02:49,218 INFO ]: With dead ends: 68 [2018-06-22 01:02:49,218 INFO ]: Without dead ends: 65 [2018-06-22 01:02:49,221 INFO ]: 0 DeclaredPredicates, 149 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2091 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2437, Invalid=7463, Unknown=0, NotChecked=0, Total=9900 [2018-06-22 01:02:49,221 INFO ]: Start minimizeSevpa. Operand 65 states. [2018-06-22 01:02:49,224 INFO ]: Finished minimizeSevpa. Reduced states from 65 to 62. [2018-06-22 01:02:49,224 INFO ]: Start removeUnreachable. Operand 62 states. [2018-06-22 01:02:49,225 INFO ]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-06-22 01:02:49,225 INFO ]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 57 [2018-06-22 01:02:49,225 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:02:49,225 INFO ]: Abstraction has 62 states and 62 transitions. [2018-06-22 01:02:49,225 INFO ]: Interpolant automaton has 54 states. [2018-06-22 01:02:49,225 INFO ]: Start isEmpty. Operand 62 states and 62 transitions. [2018-06-22 01:02:49,226 INFO ]: Finished isEmpty. Found accepting run of length 62 [2018-06-22 01:02:49,226 INFO ]: Found error trace [2018-06-22 01:02:49,226 INFO ]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:02:49,226 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:49,226 INFO ]: Analyzing trace with hash -1392859076, now seen corresponding path program 10 times [2018-06-22 01:02:49,226 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:49,227 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:49,227 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:49,227 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:02:49,227 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:49,253 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:50,037 INFO ]: Checked inductivity of 242 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:50,037 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:02:50,038 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:02:50,048 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 01:02:50,120 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 01:02:50,120 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:50,126 INFO ]: Computing forward predicates... [2018-06-22 01:02:50,442 INFO ]: Checked inductivity of 242 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:50,466 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:02:50,466 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 58 [2018-06-22 01:02:50,467 INFO ]: Interpolant automaton has 58 states [2018-06-22 01:02:50,467 INFO ]: Constructing interpolant automaton starting with 58 interpolants. [2018-06-22 01:02:50,467 INFO ]: CoverageRelationStatistics Valid=404, Invalid=2902, Unknown=0, NotChecked=0, Total=3306 [2018-06-22 01:02:50,467 INFO ]: Start difference. First operand 62 states and 62 transitions. Second operand 58 states. [2018-06-22 01:02:51,780 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:02:51,780 INFO ]: Finished difference Result 72 states and 72 transitions. [2018-06-22 01:02:51,781 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-06-22 01:02:51,781 INFO ]: Start accepts. Automaton has 58 states. Word has length 61 [2018-06-22 01:02:51,781 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:02:51,782 INFO ]: With dead ends: 72 [2018-06-22 01:02:51,782 INFO ]: Without dead ends: 69 [2018-06-22 01:02:51,783 INFO ]: 0 DeclaredPredicates, 161 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2449 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2868, Invalid=8688, Unknown=0, NotChecked=0, Total=11556 [2018-06-22 01:02:51,783 INFO ]: Start minimizeSevpa. Operand 69 states. [2018-06-22 01:02:51,786 INFO ]: Finished minimizeSevpa. Reduced states from 69 to 66. [2018-06-22 01:02:51,786 INFO ]: Start removeUnreachable. Operand 66 states. [2018-06-22 01:02:51,788 INFO ]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-06-22 01:02:51,788 INFO ]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 61 [2018-06-22 01:02:51,788 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:02:51,788 INFO ]: Abstraction has 66 states and 66 transitions. [2018-06-22 01:02:51,788 INFO ]: Interpolant automaton has 58 states. [2018-06-22 01:02:51,789 INFO ]: Start isEmpty. Operand 66 states and 66 transitions. [2018-06-22 01:02:51,789 INFO ]: Finished isEmpty. Found accepting run of length 66 [2018-06-22 01:02:51,789 INFO ]: Found error trace [2018-06-22 01:02:51,789 INFO ]: trace histogram [13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:02:51,790 INFO ]: === Iteration 12 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:51,790 INFO ]: Analyzing trace with hash 1349166548, now seen corresponding path program 11 times [2018-06-22 01:02:51,790 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:51,790 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:51,790 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:51,790 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:02:51,790 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:51,812 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:52,847 INFO ]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:52,847 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:02:52,847 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:02:52,852 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 01:02:53,091 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-06-22 01:02:53,091 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:53,103 INFO ]: Computing forward predicates... [2018-06-22 01:02:55,285 INFO ]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:55,305 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:02:55,305 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 59] total 112 [2018-06-22 01:02:55,306 INFO ]: Interpolant automaton has 112 states [2018-06-22 01:02:55,306 INFO ]: Constructing interpolant automaton starting with 112 interpolants. [2018-06-22 01:02:55,306 INFO ]: CoverageRelationStatistics Valid=850, Invalid=11582, Unknown=0, NotChecked=0, Total=12432 [2018-06-22 01:02:55,306 INFO ]: Start difference. First operand 66 states and 66 transitions. Second operand 112 states. [2018-06-22 01:02:59,474 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:02:59,474 INFO ]: Finished difference Result 76 states and 76 transitions. [2018-06-22 01:02:59,475 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-06-22 01:02:59,475 INFO ]: Start accepts. Automaton has 112 states. Word has length 65 [2018-06-22 01:02:59,475 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:02:59,476 INFO ]: With dead ends: 76 [2018-06-22 01:02:59,476 INFO ]: Without dead ends: 73 [2018-06-22 01:02:59,477 INFO ]: 0 DeclaredPredicates, 179 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8510 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2987, Invalid=26083, Unknown=0, NotChecked=0, Total=29070 [2018-06-22 01:02:59,477 INFO ]: Start minimizeSevpa. Operand 73 states. [2018-06-22 01:02:59,489 INFO ]: Finished minimizeSevpa. Reduced states from 73 to 70. [2018-06-22 01:02:59,489 INFO ]: Start removeUnreachable. Operand 70 states. [2018-06-22 01:02:59,490 INFO ]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-06-22 01:02:59,490 INFO ]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 65 [2018-06-22 01:02:59,490 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:02:59,490 INFO ]: Abstraction has 70 states and 70 transitions. [2018-06-22 01:02:59,490 INFO ]: Interpolant automaton has 112 states. [2018-06-22 01:02:59,490 INFO ]: Start isEmpty. Operand 70 states and 70 transitions. [2018-06-22 01:02:59,491 INFO ]: Finished isEmpty. Found accepting run of length 70 [2018-06-22 01:02:59,491 INFO ]: Found error trace [2018-06-22 01:02:59,491 INFO ]: trace histogram [14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:02:59,491 INFO ]: === Iteration 13 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:59,491 INFO ]: Analyzing trace with hash -1712187540, now seen corresponding path program 12 times [2018-06-22 01:02:59,491 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:59,491 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:59,492 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:59,492 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:02:59,492 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:59,520 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:03:00,402 INFO ]: Checked inductivity of 338 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:03:00,402 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:03:00,423 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:03:00,428 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 01:03:00,686 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2018-06-22 01:03:00,686 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:03:00,695 INFO ]: Computing forward predicates... [2018-06-22 01:03:32,834 INFO ]: Checked inductivity of 338 backedges. 0 proven. 327 refuted. 11 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:03:32,854 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:03:32,854 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 63] total 120 [2018-06-22 01:03:32,854 INFO ]: Interpolant automaton has 120 states [2018-06-22 01:03:32,854 INFO ]: Constructing interpolant automaton starting with 120 interpolants. [2018-06-22 01:03:32,855 INFO ]: CoverageRelationStatistics Valid=706, Invalid=13556, Unknown=18, NotChecked=0, Total=14280 [2018-06-22 01:03:32,855 INFO ]: Start difference. First operand 70 states and 70 transitions. Second operand 120 states. Received shutdown request... [2018-06-22 01:03:33,298 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 01:03:33,298 WARN ]: Verification canceled [2018-06-22 01:03:33,304 WARN ]: Timeout [2018-06-22 01:03:33,305 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:03:33 BoogieIcfgContainer [2018-06-22 01:03:33,305 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:03:33,306 INFO ]: Toolchain (without parser) took 67860.78 ms. Allocated memory was 304.1 MB in the beginning and 699.4 MB in the end (delta: 395.3 MB). Free memory was 254.5 MB in the beginning and 389.4 MB in the end (delta: -134.9 MB). Peak memory consumption was 260.4 MB. Max. memory is 3.6 GB. [2018-06-22 01:03:33,306 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 304.1 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:03:33,306 INFO ]: ChcToBoogie took 63.14 ms. Allocated memory is still 304.1 MB. Free memory was 254.5 MB in the beginning and 252.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:03:33,307 INFO ]: Boogie Preprocessor took 47.51 ms. Allocated memory is still 304.1 MB. Free memory was 252.5 MB in the beginning and 250.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:03:33,307 INFO ]: RCFGBuilder took 442.82 ms. Allocated memory is still 304.1 MB. Free memory was 250.5 MB in the beginning and 238.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:03:33,307 INFO ]: TraceAbstraction took 67298.27 ms. Allocated memory was 304.1 MB in the beginning and 699.4 MB in the end (delta: 395.3 MB). Free memory was 238.5 MB in the beginning and 389.4 MB in the end (delta: -150.9 MB). Peak memory consumption was 244.4 MB. Max. memory is 3.6 GB. [2018-06-22 01:03:33,312 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 304.1 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 63.14 ms. Allocated memory is still 304.1 MB. Free memory was 254.5 MB in the beginning and 252.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 47.51 ms. Allocated memory is still 304.1 MB. Free memory was 252.5 MB in the beginning and 250.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 442.82 ms. Allocated memory is still 304.1 MB. Free memory was 250.5 MB in the beginning and 238.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 67298.27 ms. Allocated memory was 304.1 MB in the beginning and 699.4 MB in the end (delta: 395.3 MB). Free memory was 238.5 MB in the beginning and 389.4 MB in the end (delta: -150.9 MB). Peak memory consumption was 244.4 MB. 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 (70states) and interpolant automaton (currently 7 states, 120 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 124 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. TIMEOUT Result, 67.2s OverallTime, 13 OverallIterations, 14 TraceHistogramMax, 18.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 152 SDtfs, 949 SDslu, 4933 SDs, 0 SdLazy, 8652 SolverSat, 1777 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1394 GetRequests, 331 SyntacticMatches, 1 SemanticMatches, 1061 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28694 ImplicationChecksByTransitivity, 57.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=12, 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: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 36 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 46.9s InterpolantComputationTime, 1121 NumberOfCodeBlocks, 1121 NumberOfCodeBlocksAsserted, 80 NumberOfCheckSat, 1096 ConstructedInterpolants, 46 QuantifiedInterpolants, 281356 SizeOfPredicates, 594 NumberOfNonLiveVariables, 6615 ConjunctsInSsa, 725 ConjunctsInUnsatCore, 25 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3212 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/30.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-03-33-328.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/30.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-03-33-328.csv Completed graceful shutdown