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/hopv/lia/mochi/dotprod.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:42:56,315 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:42:56,316 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:42:56,327 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:42:56,383 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:42:56,384 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:42:56,385 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:42:56,387 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:42:56,389 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:42:56,389 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:42:56,390 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:42:56,390 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:42:56,391 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:42:56,393 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:42:56,394 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:42:56,395 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:42:56,399 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:42:56,401 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:42:56,403 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:42:56,404 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:42:56,405 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:42:56,407 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:42:56,407 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:42:56,408 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:42:56,409 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:42:56,410 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:42:56,410 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:42:56,411 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:42:56,412 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:42:56,412 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:42:56,413 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:42:56,414 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:42:56,414 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:42:56,415 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:42:56,415 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:42:56,416 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:42:56,437 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:42:56,438 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:42:56,438 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:42:56,438 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:42:56,439 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:42:56,439 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:42:56,440 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:42:56,440 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:42:56,440 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:42:56,440 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:42:56,440 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:42:56,441 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:42:56,442 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:42:56,442 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:42:56,442 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:42:56,442 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:42:56,442 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:42:56,444 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:42:56,444 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:42:56,498 INFO ]: Repository-Root is: /tmp [2018-06-22 01:42:56,511 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:42:56,516 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:42:56,518 INFO ]: Initializing SmtParser... [2018-06-22 01:42:56,518 INFO ]: SmtParser initialized [2018-06-22 01:42:56,519 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/dotprod.smt2 [2018-06-22 01:42:56,520 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 01:42:56,607 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/dotprod.smt2 unknown [2018-06-22 01:42:56,967 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/dotprod.smt2 [2018-06-22 01:42:56,976 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:42:56,985 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:42:56,986 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:42:56,986 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:42:56,986 INFO ]: ChcToBoogie initialized [2018-06-22 01:42:56,990 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:42:56" (1/1) ... [2018-06-22 01:42:57,061 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:42:57 Unit [2018-06-22 01:42:57,061 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:42:57,062 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:42:57,062 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:42:57,062 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:42:57,085 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:42:57" (1/1) ... [2018-06-22 01:42:57,085 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:42:57" (1/1) ... [2018-06-22 01:42:57,094 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:42:57" (1/1) ... [2018-06-22 01:42:57,094 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:42:57" (1/1) ... [2018-06-22 01:42:57,098 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:42:57" (1/1) ... [2018-06-22 01:42:57,104 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:42:57" (1/1) ... [2018-06-22 01:42:57,109 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:42:57" (1/1) ... [2018-06-22 01:42:57,112 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:42:57,113 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:42:57,113 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:42:57,113 INFO ]: RCFGBuilder initialized [2018-06-22 01:42:57,114 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:42:57" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:42:57,125 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:42:57,125 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:42:57,125 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:42:57,125 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:42:57,125 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:42:57,125 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 01:42:57,591 INFO ]: Using library mode [2018-06-22 01:42:57,592 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:42:57 BoogieIcfgContainer [2018-06-22 01:42:57,592 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:42:57,593 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:42:57,593 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:42:57,597 INFO ]: TraceAbstraction initialized [2018-06-22 01:42:57,597 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:42:56" (1/3) ... [2018-06-22 01:42:57,598 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537ffadd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:42:57, skipping insertion in model container [2018-06-22 01:42:57,598 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:42:57" (2/3) ... [2018-06-22 01:42:57,598 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537ffadd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:42:57, skipping insertion in model container [2018-06-22 01:42:57,598 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:42:57" (3/3) ... [2018-06-22 01:42:57,600 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:42:57,608 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:42:57,615 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:42:57,652 INFO ]: Using default assertion order modulation [2018-06-22 01:42:57,652 INFO ]: Interprodecural is true [2018-06-22 01:42:57,652 INFO ]: Hoare is false [2018-06-22 01:42:57,652 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:42:57,652 INFO ]: Backedges is TWOTRACK [2018-06-22 01:42:57,652 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:42:57,652 INFO ]: Difference is false [2018-06-22 01:42:57,652 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:42:57,652 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:42:57,666 INFO ]: Start isEmpty. Operand 29 states. [2018-06-22 01:42:57,679 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:42:57,679 INFO ]: Found error trace [2018-06-22 01:42:57,680 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:42:57,680 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:42:57,684 INFO ]: Analyzing trace with hash -1042760505, now seen corresponding path program 1 times [2018-06-22 01:42:57,685 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:42:57,686 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:42:57,718 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:42:57,718 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:42:57,718 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:42:57,749 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:42:57,820 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:42:57,821 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:42:57,822 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:42:57,823 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:42:57,833 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:42:57,834 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:42:57,836 INFO ]: Start difference. First operand 29 states. Second operand 4 states. [2018-06-22 01:42:58,396 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:42:58,397 INFO ]: Finished difference Result 51 states and 71 transitions. [2018-06-22 01:42:58,398 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:42:58,399 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-22 01:42:58,400 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:42:58,417 INFO ]: With dead ends: 51 [2018-06-22 01:42:58,417 INFO ]: Without dead ends: 49 [2018-06-22 01:42:58,421 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:42:58,443 INFO ]: Start minimizeSevpa. Operand 49 states. [2018-06-22 01:42:58,493 INFO ]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-06-22 01:42:58,494 INFO ]: Start removeUnreachable. Operand 49 states. [2018-06-22 01:42:58,498 INFO ]: Finished removeUnreachable. Reduced from 49 states to 49 states and 69 transitions. [2018-06-22 01:42:58,500 INFO ]: Start accepts. Automaton has 49 states and 69 transitions. Word has length 7 [2018-06-22 01:42:58,500 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:42:58,500 INFO ]: Abstraction has 49 states and 69 transitions. [2018-06-22 01:42:58,500 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:42:58,500 INFO ]: Start isEmpty. Operand 49 states and 69 transitions. [2018-06-22 01:42:58,503 INFO ]: Finished isEmpty. Found accepting run of length 17 [2018-06-22 01:42:58,503 INFO ]: Found error trace [2018-06-22 01:42:58,504 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:42:58,504 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:42:58,504 INFO ]: Analyzing trace with hash -934004339, now seen corresponding path program 1 times [2018-06-22 01:42:58,504 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:42:58,504 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:42:58,505 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:42:58,505 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:42:58,505 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:42:58,516 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:42:58,586 INFO ]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 01:42:58,586 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:42:58,586 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 01:42:58,597 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:42:58,615 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:42:58,622 INFO ]: Computing forward predicates... [2018-06-22 01:42:58,642 INFO ]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 01:42:58,681 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:42:58,682 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 01:42:58,682 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:42:58,682 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:42:58,682 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:42:58,683 INFO ]: Start difference. First operand 49 states and 69 transitions. Second operand 4 states. [2018-06-22 01:42:58,876 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:42:58,876 INFO ]: Finished difference Result 68 states and 97 transitions. [2018-06-22 01:42:58,877 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:42:58,877 INFO ]: Start accepts. Automaton has 4 states. Word has length 16 [2018-06-22 01:42:58,877 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:42:58,882 INFO ]: With dead ends: 68 [2018-06-22 01:42:58,882 INFO ]: Without dead ends: 68 [2018-06-22 01:42:58,883 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:42:58,883 INFO ]: Start minimizeSevpa. Operand 68 states. [2018-06-22 01:42:58,895 INFO ]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-06-22 01:42:58,896 INFO ]: Start removeUnreachable. Operand 68 states. [2018-06-22 01:42:58,898 INFO ]: Finished removeUnreachable. Reduced from 68 states to 68 states and 97 transitions. [2018-06-22 01:42:58,898 INFO ]: Start accepts. Automaton has 68 states and 97 transitions. Word has length 16 [2018-06-22 01:42:58,898 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:42:58,898 INFO ]: Abstraction has 68 states and 97 transitions. [2018-06-22 01:42:58,899 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:42:58,899 INFO ]: Start isEmpty. Operand 68 states and 97 transitions. [2018-06-22 01:42:58,902 INFO ]: Finished isEmpty. Found accepting run of length 27 [2018-06-22 01:42:58,902 INFO ]: Found error trace [2018-06-22 01:42:58,902 INFO ]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:42:58,902 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:42:58,902 INFO ]: Analyzing trace with hash -269794271, now seen corresponding path program 1 times [2018-06-22 01:42:58,902 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:42:58,902 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:42:58,903 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:42:58,903 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:42:58,903 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:42:58,912 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:42:58,966 INFO ]: Checked inductivity of 14 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 01:42:58,966 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:42:58,966 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 01:42:58,973 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:42:59,006 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:42:59,008 INFO ]: Computing forward predicates... [2018-06-22 01:42:59,014 INFO ]: Checked inductivity of 14 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 01:42:59,048 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:42:59,048 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 01:42:59,049 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:42:59,049 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:42:59,049 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:42:59,049 INFO ]: Start difference. First operand 68 states and 97 transitions. Second operand 4 states. [2018-06-22 01:42:59,581 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:42:59,581 INFO ]: Finished difference Result 87 states and 125 transitions. [2018-06-22 01:42:59,581 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:42:59,581 INFO ]: Start accepts. Automaton has 4 states. Word has length 26 [2018-06-22 01:42:59,582 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:42:59,584 INFO ]: With dead ends: 87 [2018-06-22 01:42:59,584 INFO ]: Without dead ends: 87 [2018-06-22 01:42:59,584 INFO ]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:42:59,584 INFO ]: Start minimizeSevpa. Operand 87 states. [2018-06-22 01:42:59,593 INFO ]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-06-22 01:42:59,593 INFO ]: Start removeUnreachable. Operand 87 states. [2018-06-22 01:42:59,595 INFO ]: Finished removeUnreachable. Reduced from 87 states to 87 states and 125 transitions. [2018-06-22 01:42:59,595 INFO ]: Start accepts. Automaton has 87 states and 125 transitions. Word has length 26 [2018-06-22 01:42:59,595 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:42:59,595 INFO ]: Abstraction has 87 states and 125 transitions. [2018-06-22 01:42:59,595 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:42:59,595 INFO ]: Start isEmpty. Operand 87 states and 125 transitions. [2018-06-22 01:42:59,598 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 01:42:59,598 INFO ]: Found error trace [2018-06-22 01:42:59,598 INFO ]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:42:59,598 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:42:59,598 INFO ]: Analyzing trace with hash -1364327165, now seen corresponding path program 1 times [2018-06-22 01:42:59,598 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:42:59,598 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:42:59,599 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:42:59,599 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:42:59,599 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:42:59,612 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:42:59,709 INFO ]: Checked inductivity of 14 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 01:42:59,709 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:42:59,709 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 01:42:59,717 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:42:59,743 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:42:59,745 INFO ]: Computing forward predicates... [2018-06-22 01:42:59,751 INFO ]: Checked inductivity of 14 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 01:42:59,781 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:42:59,781 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 01:42:59,782 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:42:59,782 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:42:59,782 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:42:59,782 INFO ]: Start difference. First operand 87 states and 125 transitions. Second operand 4 states. [2018-06-22 01:42:59,960 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:42:59,960 INFO ]: Finished difference Result 106 states and 153 transitions. [2018-06-22 01:42:59,961 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:42:59,961 INFO ]: Start accepts. Automaton has 4 states. Word has length 29 [2018-06-22 01:42:59,962 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:42:59,964 INFO ]: With dead ends: 106 [2018-06-22 01:42:59,964 INFO ]: Without dead ends: 106 [2018-06-22 01:42:59,964 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:42:59,964 INFO ]: Start minimizeSevpa. Operand 106 states. [2018-06-22 01:42:59,974 INFO ]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-06-22 01:42:59,975 INFO ]: Start removeUnreachable. Operand 106 states. [2018-06-22 01:42:59,977 INFO ]: Finished removeUnreachable. Reduced from 106 states to 106 states and 153 transitions. [2018-06-22 01:42:59,977 INFO ]: Start accepts. Automaton has 106 states and 153 transitions. Word has length 29 [2018-06-22 01:42:59,977 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:42:59,977 INFO ]: Abstraction has 106 states and 153 transitions. [2018-06-22 01:42:59,977 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:42:59,977 INFO ]: Start isEmpty. Operand 106 states and 153 transitions. [2018-06-22 01:42:59,980 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 01:42:59,980 INFO ]: Found error trace [2018-06-22 01:42:59,980 INFO ]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:42:59,980 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:42:59,981 INFO ]: Analyzing trace with hash -556819762, now seen corresponding path program 1 times [2018-06-22 01:42:59,981 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:42:59,981 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:42:59,981 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:42:59,981 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:42:59,981 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:00,007 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:43:00,241 INFO ]: Checked inductivity of 14 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 01:43:00,241 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:43:00,241 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 01:43:00,256 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:43:00,329 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:43:00,332 INFO ]: Computing forward predicates... [2018-06-22 01:43:00,780 INFO ]: Checked inductivity of 14 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 01:43:00,802 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:43:00,803 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2018-06-22 01:43:00,803 INFO ]: Interpolant automaton has 18 states [2018-06-22 01:43:00,803 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 01:43:00,803 INFO ]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2018-06-22 01:43:00,803 INFO ]: Start difference. First operand 106 states and 153 transitions. Second operand 18 states. [2018-06-22 01:43:02,770 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:43:02,771 INFO ]: Finished difference Result 253 states and 422 transitions. [2018-06-22 01:43:02,771 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-06-22 01:43:02,771 INFO ]: Start accepts. Automaton has 18 states. Word has length 29 [2018-06-22 01:43:02,771 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:43:02,780 INFO ]: With dead ends: 253 [2018-06-22 01:43:02,780 INFO ]: Without dead ends: 207 [2018-06-22 01:43:02,781 INFO ]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=314, Invalid=1492, Unknown=0, NotChecked=0, Total=1806 [2018-06-22 01:43:02,781 INFO ]: Start minimizeSevpa. Operand 207 states. [2018-06-22 01:43:02,833 INFO ]: Finished minimizeSevpa. Reduced states from 207 to 128. [2018-06-22 01:43:02,834 INFO ]: Start removeUnreachable. Operand 128 states. [2018-06-22 01:43:02,836 INFO ]: Finished removeUnreachable. Reduced from 128 states to 128 states and 188 transitions. [2018-06-22 01:43:02,836 INFO ]: Start accepts. Automaton has 128 states and 188 transitions. Word has length 29 [2018-06-22 01:43:02,836 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:43:02,836 INFO ]: Abstraction has 128 states and 188 transitions. [2018-06-22 01:43:02,836 INFO ]: Interpolant automaton has 18 states. [2018-06-22 01:43:02,836 INFO ]: Start isEmpty. Operand 128 states and 188 transitions. [2018-06-22 01:43:02,839 INFO ]: Finished isEmpty. Found accepting run of length 40 [2018-06-22 01:43:02,839 INFO ]: Found error trace [2018-06-22 01:43:02,840 INFO ]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:43:02,840 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:43:02,840 INFO ]: Analyzing trace with hash 1027873954, now seen corresponding path program 1 times [2018-06-22 01:43:02,840 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:43:02,840 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:43:02,841 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:02,841 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:43:02,841 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:02,854 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:43:02,895 INFO ]: Checked inductivity of 33 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-06-22 01:43:02,895 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:43:02,895 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 01:43:02,914 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:43:03,045 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:43:03,047 INFO ]: Computing forward predicates... [2018-06-22 01:43:03,053 INFO ]: Checked inductivity of 33 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-06-22 01:43:03,075 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:43:03,076 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 01:43:03,076 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:43:03,076 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:43:03,076 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:43:03,076 INFO ]: Start difference. First operand 128 states and 188 transitions. Second operand 4 states. [2018-06-22 01:43:03,140 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:43:03,141 INFO ]: Finished difference Result 162 states and 235 transitions. [2018-06-22 01:43:03,141 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:43:03,141 INFO ]: Start accepts. Automaton has 4 states. Word has length 39 [2018-06-22 01:43:03,141 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:43:03,143 INFO ]: With dead ends: 162 [2018-06-22 01:43:03,143 INFO ]: Without dead ends: 128 [2018-06-22 01:43:03,143 INFO ]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:43:03,143 INFO ]: Start minimizeSevpa. Operand 128 states. [2018-06-22 01:43:03,156 INFO ]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-06-22 01:43:03,156 INFO ]: Start removeUnreachable. Operand 128 states. [2018-06-22 01:43:03,158 INFO ]: Finished removeUnreachable. Reduced from 128 states to 128 states and 182 transitions. [2018-06-22 01:43:03,158 INFO ]: Start accepts. Automaton has 128 states and 182 transitions. Word has length 39 [2018-06-22 01:43:03,158 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:43:03,158 INFO ]: Abstraction has 128 states and 182 transitions. [2018-06-22 01:43:03,158 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:43:03,158 INFO ]: Start isEmpty. Operand 128 states and 182 transitions. [2018-06-22 01:43:03,161 INFO ]: Finished isEmpty. Found accepting run of length 39 [2018-06-22 01:43:03,161 INFO ]: Found error trace [2018-06-22 01:43:03,161 INFO ]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:43:03,161 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:43:03,161 INFO ]: Analyzing trace with hash -1237821014, now seen corresponding path program 2 times [2018-06-22 01:43:03,161 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:43:03,161 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:43:03,162 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:03,162 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:43:03,162 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:03,174 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:43:03,330 INFO ]: Checked inductivity of 33 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-06-22 01:43:03,330 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:43:03,330 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 01:43:03,345 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 01:43:03,397 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 01:43:03,397 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:43:03,399 INFO ]: Computing forward predicates... [2018-06-22 01:43:03,407 INFO ]: Checked inductivity of 33 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-06-22 01:43:03,439 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:43:03,439 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 01:43:03,440 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:43:03,440 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:43:03,440 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:43:03,440 INFO ]: Start difference. First operand 128 states and 182 transitions. Second operand 4 states. [2018-06-22 01:43:03,554 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:43:03,554 INFO ]: Finished difference Result 130 states and 183 transitions. [2018-06-22 01:43:03,554 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:43:03,554 INFO ]: Start accepts. Automaton has 4 states. Word has length 38 [2018-06-22 01:43:03,555 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:43:03,556 INFO ]: With dead ends: 130 [2018-06-22 01:43:03,556 INFO ]: Without dead ends: 124 [2018-06-22 01:43:03,556 INFO ]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:43:03,557 INFO ]: Start minimizeSevpa. Operand 124 states. [2018-06-22 01:43:03,565 INFO ]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-06-22 01:43:03,565 INFO ]: Start removeUnreachable. Operand 124 states. [2018-06-22 01:43:03,567 INFO ]: Finished removeUnreachable. Reduced from 124 states to 124 states and 175 transitions. [2018-06-22 01:43:03,567 INFO ]: Start accepts. Automaton has 124 states and 175 transitions. Word has length 38 [2018-06-22 01:43:03,567 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:43:03,567 INFO ]: Abstraction has 124 states and 175 transitions. [2018-06-22 01:43:03,567 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:43:03,567 INFO ]: Start isEmpty. Operand 124 states and 175 transitions. [2018-06-22 01:43:03,570 INFO ]: Finished isEmpty. Found accepting run of length 58 [2018-06-22 01:43:03,570 INFO ]: Found error trace [2018-06-22 01:43:03,570 INFO ]: trace histogram [6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:43:03,570 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:43:03,570 INFO ]: Analyzing trace with hash 1111347642, now seen corresponding path program 1 times [2018-06-22 01:43:03,570 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:43:03,571 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:43:03,571 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:03,571 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:43:03,571 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:03,596 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:43:03,896 INFO ]: Checked inductivity of 81 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-06-22 01:43:03,896 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:43:03,896 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 01:43:03,903 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:43:03,954 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:43:03,959 INFO ]: Computing forward predicates... [2018-06-22 01:43:04,623 INFO ]: Checked inductivity of 81 backedges. 49 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-06-22 01:43:04,654 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:43:04,654 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 24 [2018-06-22 01:43:04,654 INFO ]: Interpolant automaton has 24 states [2018-06-22 01:43:04,654 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 01:43:04,654 INFO ]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2018-06-22 01:43:04,655 INFO ]: Start difference. First operand 124 states and 175 transitions. Second operand 24 states. [2018-06-22 01:43:06,792 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:43:06,854 INFO ]: Finished difference Result 231 states and 432 transitions. [2018-06-22 01:43:06,854 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-06-22 01:43:06,854 INFO ]: Start accepts. Automaton has 24 states. Word has length 57 [2018-06-22 01:43:06,855 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:43:06,862 INFO ]: With dead ends: 231 [2018-06-22 01:43:06,863 INFO ]: Without dead ends: 211 [2018-06-22 01:43:06,865 INFO ]: 0 DeclaredPredicates, 101 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=271, Invalid=2179, Unknown=0, NotChecked=0, Total=2450 [2018-06-22 01:43:06,865 INFO ]: Start minimizeSevpa. Operand 211 states. [2018-06-22 01:43:06,915 INFO ]: Finished minimizeSevpa. Reduced states from 211 to 146. [2018-06-22 01:43:06,915 INFO ]: Start removeUnreachable. Operand 146 states. [2018-06-22 01:43:06,917 INFO ]: Finished removeUnreachable. Reduced from 146 states to 146 states and 226 transitions. [2018-06-22 01:43:06,917 INFO ]: Start accepts. Automaton has 146 states and 226 transitions. Word has length 57 [2018-06-22 01:43:06,917 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:43:06,917 INFO ]: Abstraction has 146 states and 226 transitions. [2018-06-22 01:43:06,918 INFO ]: Interpolant automaton has 24 states. [2018-06-22 01:43:06,918 INFO ]: Start isEmpty. Operand 146 states and 226 transitions. [2018-06-22 01:43:06,927 INFO ]: Finished isEmpty. Found accepting run of length 61 [2018-06-22 01:43:06,927 INFO ]: Found error trace [2018-06-22 01:43:06,927 INFO ]: trace histogram [6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:43:06,927 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:43:06,927 INFO ]: Analyzing trace with hash -1172757832, now seen corresponding path program 1 times [2018-06-22 01:43:06,927 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:43:06,927 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:43:06,928 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:06,928 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:43:06,928 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:06,952 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:43:07,149 INFO ]: Checked inductivity of 85 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-06-22 01:43:07,149 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:43:07,149 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 01:43:07,157 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:43:07,189 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:43:07,193 INFO ]: Computing forward predicates... [2018-06-22 01:43:07,200 INFO ]: Checked inductivity of 85 backedges. 60 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-22 01:43:07,222 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:43:07,222 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 01:43:07,222 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:43:07,222 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:43:07,222 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:43:07,222 INFO ]: Start difference. First operand 146 states and 226 transitions. Second operand 4 states. [2018-06-22 01:43:07,345 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:43:07,345 INFO ]: Finished difference Result 176 states and 278 transitions. [2018-06-22 01:43:07,345 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:43:07,345 INFO ]: Start accepts. Automaton has 4 states. Word has length 60 [2018-06-22 01:43:07,346 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:43:07,347 INFO ]: With dead ends: 176 [2018-06-22 01:43:07,347 INFO ]: Without dead ends: 146 [2018-06-22 01:43:07,348 INFO ]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:43:07,348 INFO ]: Start minimizeSevpa. Operand 146 states. [2018-06-22 01:43:07,358 INFO ]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-06-22 01:43:07,358 INFO ]: Start removeUnreachable. Operand 146 states. [2018-06-22 01:43:07,360 INFO ]: Finished removeUnreachable. Reduced from 146 states to 146 states and 224 transitions. [2018-06-22 01:43:07,360 INFO ]: Start accepts. Automaton has 146 states and 224 transitions. Word has length 60 [2018-06-22 01:43:07,360 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:43:07,360 INFO ]: Abstraction has 146 states and 224 transitions. [2018-06-22 01:43:07,360 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:43:07,360 INFO ]: Start isEmpty. Operand 146 states and 224 transitions. [2018-06-22 01:43:07,364 INFO ]: Finished isEmpty. Found accepting run of length 87 [2018-06-22 01:43:07,365 INFO ]: Found error trace [2018-06-22 01:43:07,365 INFO ]: trace histogram [9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:43:07,365 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:43:07,365 INFO ]: Analyzing trace with hash -1259890761, now seen corresponding path program 1 times [2018-06-22 01:43:07,365 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:43:07,365 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:43:07,366 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:07,366 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:43:07,366 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:07,375 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-22 01:43:07,375 INFO ]: Advancing trace checker [2018-06-22 01:43:07,375 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 (exit command is (exit), workingDir is null) [2018-06-22 01:43:07,388 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-22 01:43:07,434 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:43:07,440 INFO ]: Computing forward predicates... [2018-06-22 01:43:07,693 INFO ]: Checked inductivity of 206 backedges. 106 proven. 14 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-06-22 01:43:07,715 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:43:07,715 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-06-22 01:43:07,715 INFO ]: Interpolant automaton has 15 states [2018-06-22 01:43:07,715 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 01:43:07,716 INFO ]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-06-22 01:43:07,716 INFO ]: Start difference. First operand 146 states and 224 transitions. Second operand 15 states. [2018-06-22 01:43:09,565 WARN ]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-06-22 01:43:10,741 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:43:10,741 INFO ]: Finished difference Result 320 states and 699 transitions. [2018-06-22 01:43:10,741 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-06-22 01:43:10,741 INFO ]: Start accepts. Automaton has 15 states. Word has length 86 [2018-06-22 01:43:10,742 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:43:10,748 INFO ]: With dead ends: 320 [2018-06-22 01:43:10,748 INFO ]: Without dead ends: 310 [2018-06-22 01:43:10,750 INFO ]: 0 DeclaredPredicates, 132 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=472, Invalid=2608, Unknown=0, NotChecked=0, Total=3080 [2018-06-22 01:43:10,750 INFO ]: Start minimizeSevpa. Operand 310 states. [2018-06-22 01:43:10,790 INFO ]: Finished minimizeSevpa. Reduced states from 310 to 177. [2018-06-22 01:43:10,790 INFO ]: Start removeUnreachable. Operand 177 states. [2018-06-22 01:43:10,793 INFO ]: Finished removeUnreachable. Reduced from 177 states to 177 states and 309 transitions. [2018-06-22 01:43:10,793 INFO ]: Start accepts. Automaton has 177 states and 309 transitions. Word has length 86 [2018-06-22 01:43:10,793 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:43:10,793 INFO ]: Abstraction has 177 states and 309 transitions. [2018-06-22 01:43:10,793 INFO ]: Interpolant automaton has 15 states. [2018-06-22 01:43:10,793 INFO ]: Start isEmpty. Operand 177 states and 309 transitions. [2018-06-22 01:43:10,800 INFO ]: Finished isEmpty. Found accepting run of length 115 [2018-06-22 01:43:10,800 INFO ]: Found error trace [2018-06-22 01:43:10,800 INFO ]: trace histogram [12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:43:10,800 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:43:10,800 INFO ]: Analyzing trace with hash 572982819, now seen corresponding path program 1 times [2018-06-22 01:43:10,800 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:43:10,800 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:43:10,801 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:10,801 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:43:10,801 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:10,807 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-22 01:43:10,807 INFO ]: Advancing trace checker [2018-06-22 01:43:10,807 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 (exit command is (exit), workingDir is null) [2018-06-22 01:43:10,822 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-22 01:43:10,892 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:43:10,898 INFO ]: Computing forward predicates... [2018-06-22 01:43:11,143 INFO ]: Checked inductivity of 382 backedges. 167 proven. 34 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-06-22 01:43:11,170 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:43:11,171 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-06-22 01:43:11,171 INFO ]: Interpolant automaton has 16 states [2018-06-22 01:43:11,171 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 01:43:11,171 INFO ]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2018-06-22 01:43:11,171 INFO ]: Start difference. First operand 177 states and 309 transitions. Second operand 16 states. [2018-06-22 01:43:14,652 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:43:14,652 INFO ]: Finished difference Result 400 states and 896 transitions. [2018-06-22 01:43:14,653 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-06-22 01:43:14,653 INFO ]: Start accepts. Automaton has 16 states. Word has length 114 [2018-06-22 01:43:14,653 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:43:14,659 INFO ]: With dead ends: 400 [2018-06-22 01:43:14,659 INFO ]: Without dead ends: 384 [2018-06-22 01:43:14,660 INFO ]: 0 DeclaredPredicates, 178 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=778, Invalid=4334, Unknown=0, NotChecked=0, Total=5112 [2018-06-22 01:43:14,661 INFO ]: Start minimizeSevpa. Operand 384 states. [2018-06-22 01:43:14,710 INFO ]: Finished minimizeSevpa. Reduced states from 384 to 223. [2018-06-22 01:43:14,710 INFO ]: Start removeUnreachable. Operand 223 states. [2018-06-22 01:43:14,716 INFO ]: Finished removeUnreachable. Reduced from 223 states to 223 states and 433 transitions. [2018-06-22 01:43:14,716 INFO ]: Start accepts. Automaton has 223 states and 433 transitions. Word has length 114 [2018-06-22 01:43:14,716 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:43:14,716 INFO ]: Abstraction has 223 states and 433 transitions. [2018-06-22 01:43:14,716 INFO ]: Interpolant automaton has 16 states. [2018-06-22 01:43:14,716 INFO ]: Start isEmpty. Operand 223 states and 433 transitions. [2018-06-22 01:43:14,725 INFO ]: Finished isEmpty. Found accepting run of length 144 [2018-06-22 01:43:14,725 INFO ]: Found error trace [2018-06-22 01:43:14,725 INFO ]: trace histogram [15, 15, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-06-22 01:43:14,725 INFO ]: === Iteration 12 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:43:14,725 INFO ]: Analyzing trace with hash -1428705166, now seen corresponding path program 2 times [2018-06-22 01:43:14,725 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:43:14,725 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:43:14,726 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:14,726 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:43:14,726 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:14,735 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-22 01:43:14,735 INFO ]: Advancing trace checker [2018-06-22 01:43:14,735 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 (exit command is (exit), workingDir is null) [2018-06-22 01:43:14,751 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-22 01:43:14,844 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 01:43:14,844 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:43:14,855 INFO ]: Computing forward predicates... [2018-06-22 01:43:15,019 INFO ]: Checked inductivity of 623 backedges. 246 proven. 43 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2018-06-22 01:43:15,040 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:43:15,040 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-06-22 01:43:15,040 INFO ]: Interpolant automaton has 11 states [2018-06-22 01:43:15,040 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 01:43:15,040 INFO ]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-06-22 01:43:15,040 INFO ]: Start difference. First operand 223 states and 433 transitions. Second operand 11 states. [2018-06-22 01:43:16,209 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:43:16,209 INFO ]: Finished difference Result 532 states and 1309 transitions. [2018-06-22 01:43:16,209 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-06-22 01:43:16,209 INFO ]: Start accepts. Automaton has 11 states. Word has length 143 [2018-06-22 01:43:16,210 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:43:16,225 INFO ]: With dead ends: 532 [2018-06-22 01:43:16,225 INFO ]: Without dead ends: 494 [2018-06-22 01:43:16,226 INFO ]: 0 DeclaredPredicates, 188 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=347, Invalid=1723, Unknown=0, NotChecked=0, Total=2070 [2018-06-22 01:43:16,226 INFO ]: Start minimizeSevpa. Operand 494 states. [2018-06-22 01:43:16,277 INFO ]: Finished minimizeSevpa. Reduced states from 494 to 412. [2018-06-22 01:43:16,277 INFO ]: Start removeUnreachable. Operand 412 states. [2018-06-22 01:43:16,287 INFO ]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1068 transitions. [2018-06-22 01:43:16,287 INFO ]: Start accepts. Automaton has 412 states and 1068 transitions. Word has length 143 [2018-06-22 01:43:16,287 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:43:16,287 INFO ]: Abstraction has 412 states and 1068 transitions. [2018-06-22 01:43:16,287 INFO ]: Interpolant automaton has 11 states. [2018-06-22 01:43:16,288 INFO ]: Start isEmpty. Operand 412 states and 1068 transitions. [2018-06-22 01:43:16,302 INFO ]: Finished isEmpty. Found accepting run of length 201 [2018-06-22 01:43:16,302 INFO ]: Found error trace [2018-06-22 01:43:16,302 INFO ]: trace histogram [21, 21, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2018-06-22 01:43:16,302 INFO ]: === Iteration 13 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:43:16,302 INFO ]: Analyzing trace with hash 1054761521, now seen corresponding path program 3 times [2018-06-22 01:43:16,302 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:43:16,302 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:43:16,303 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:16,303 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:43:16,303 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:16,312 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-22 01:43:16,312 INFO ]: Advancing trace checker [2018-06-22 01:43:16,312 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-22 01:43:16,330 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 01:43:16,423 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-06-22 01:43:16,423 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:43:16,432 INFO ]: Computing forward predicates... [2018-06-22 01:43:16,596 INFO ]: Checked inductivity of 1265 backedges. 350 proven. 7 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2018-06-22 01:43:16,629 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:43:16,629 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-06-22 01:43:16,629 INFO ]: Interpolant automaton has 12 states [2018-06-22 01:43:16,630 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 01:43:16,630 INFO ]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-06-22 01:43:16,630 INFO ]: Start difference. First operand 412 states and 1068 transitions. Second operand 12 states. [2018-06-22 01:43:18,033 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:43:18,033 INFO ]: Finished difference Result 1098 states and 2806 transitions. [2018-06-22 01:43:18,033 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-06-22 01:43:18,033 INFO ]: Start accepts. Automaton has 12 states. Word has length 200 [2018-06-22 01:43:18,034 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:43:18,078 INFO ]: With dead ends: 1098 [2018-06-22 01:43:18,078 INFO ]: Without dead ends: 1098 [2018-06-22 01:43:18,079 INFO ]: 0 DeclaredPredicates, 254 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=539, Invalid=2011, Unknown=0, NotChecked=0, Total=2550 [2018-06-22 01:43:18,084 INFO ]: Start minimizeSevpa. Operand 1098 states. [2018-06-22 01:43:18,196 INFO ]: Finished minimizeSevpa. Reduced states from 1098 to 588. [2018-06-22 01:43:18,196 INFO ]: Start removeUnreachable. Operand 588 states. [2018-06-22 01:43:18,208 INFO ]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1454 transitions. [2018-06-22 01:43:18,208 INFO ]: Start accepts. Automaton has 588 states and 1454 transitions. Word has length 200 [2018-06-22 01:43:18,209 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:43:18,209 INFO ]: Abstraction has 588 states and 1454 transitions. [2018-06-22 01:43:18,209 INFO ]: Interpolant automaton has 12 states. [2018-06-22 01:43:18,209 INFO ]: Start isEmpty. Operand 588 states and 1454 transitions. [2018-06-22 01:43:18,227 INFO ]: Finished isEmpty. Found accepting run of length 258 [2018-06-22 01:43:18,227 INFO ]: Found error trace [2018-06-22 01:43:18,228 INFO ]: trace histogram [27, 27, 18, 18, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2018-06-22 01:43:18,228 INFO ]: === Iteration 14 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:43:18,228 INFO ]: Analyzing trace with hash 1698865588, now seen corresponding path program 4 times [2018-06-22 01:43:18,228 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:43:18,228 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:43:18,229 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:18,229 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:43:18,229 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:43:18,241 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-22 01:43:18,273 INFO ]: Advancing trace checker [2018-06-22 01:43:18,273 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-06-22 01:43:18,282 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-22 01:43:18,443 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 01:43:18,443 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:43:18,454 INFO ]: Computing forward predicates... [2018-06-22 01:43:18,723 WARN ]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 01:43:18,911 WARN ]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 01:43:20,028 INFO ]: Checked inductivity of 2132 backedges. 1067 proven. 135 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-06-22 01:43:20,051 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:43:20,051 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-06-22 01:43:20,051 INFO ]: Interpolant automaton has 17 states [2018-06-22 01:43:20,051 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 01:43:20,051 INFO ]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2018-06-22 01:43:20,051 INFO ]: Start difference. First operand 588 states and 1454 transitions. Second operand 17 states. [2018-06-22 01:43:21,680 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:43:21,680 INFO ]: Finished difference Result 266 states and 390 transitions. [2018-06-22 01:43:21,680 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-06-22 01:43:21,680 INFO ]: Start accepts. Automaton has 17 states. Word has length 257 [2018-06-22 01:43:21,680 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:43:21,680 INFO ]: With dead ends: 266 [2018-06-22 01:43:21,680 INFO ]: Without dead ends: 0 [2018-06-22 01:43:21,681 INFO ]: 0 DeclaredPredicates, 303 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=483, Invalid=3057, Unknown=0, NotChecked=0, Total=3540 [2018-06-22 01:43:21,681 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:43:21,681 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:43:21,681 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:43:21,681 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:43:21,681 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 257 [2018-06-22 01:43:21,681 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:43:21,681 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:43:21,681 INFO ]: Interpolant automaton has 17 states. [2018-06-22 01:43:21,681 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:43:21,681 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:43:21,685 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:43:21 BoogieIcfgContainer [2018-06-22 01:43:21,685 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:43:21,686 INFO ]: Toolchain (without parser) took 24709.50 ms. Allocated memory was 309.9 MB in the beginning and 528.5 MB in the end (delta: 218.6 MB). Free memory was 258.3 MB in the beginning and 319.4 MB in the end (delta: -61.1 MB). Peak memory consumption was 157.5 MB. Max. memory is 3.6 GB. [2018-06-22 01:43:21,686 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.9 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:43:21,687 INFO ]: ChcToBoogie took 75.93 ms. Allocated memory is still 309.9 MB. Free memory was 258.3 MB in the beginning and 256.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:43:21,687 INFO ]: Boogie Preprocessor took 49.88 ms. Allocated memory is still 309.9 MB. Free memory was 256.3 MB in the beginning and 254.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:43:21,688 INFO ]: RCFGBuilder took 479.30 ms. Allocated memory is still 309.9 MB. Free memory was 254.3 MB in the beginning and 240.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:43:21,688 INFO ]: TraceAbstraction took 24091.85 ms. Allocated memory was 309.9 MB in the beginning and 528.5 MB in the end (delta: 218.6 MB). Free memory was 240.3 MB in the beginning and 319.4 MB in the end (delta: -79.0 MB). Peak memory consumption was 139.6 MB. Max. memory is 3.6 GB. [2018-06-22 01:43:21,694 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 309.9 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 75.93 ms. Allocated memory is still 309.9 MB. Free memory was 258.3 MB in the beginning and 256.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 49.88 ms. Allocated memory is still 309.9 MB. Free memory was 256.3 MB in the beginning and 254.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 479.30 ms. Allocated memory is still 309.9 MB. Free memory was 254.3 MB in the beginning and 240.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 24091.85 ms. Allocated memory was 309.9 MB in the beginning and 528.5 MB in the end (delta: 218.6 MB). Free memory was 240.3 MB in the beginning and 319.4 MB in the end (delta: -79.0 MB). Peak memory consumption was 139.6 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. SAFE Result, 24.0s OverallTime, 14 OverallIterations, 27 TraceHistogramMax, 16.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 781 SDtfs, 1354 SDslu, 3664 SDs, 0 SdLazy, 9064 SolverSat, 1905 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1465 GetRequests, 1078 SyntacticMatches, 2 SemanticMatches, 385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5200 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=588occurred in iteration=13, 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: 0.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 1030 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1395 NumberOfCodeBlocks, 1345 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1373 ConstructedInterpolants, 0 QuantifiedInterpolants, 283907 SizeOfPredicates, 99 NumberOfNonLiveVariables, 4668 ConjunctsInSsa, 264 ConjunctsInUnsatCore, 22 InterpolantComputations, 1 PerfectInterpolantSequences, 4859/5166 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-43-21-705.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-43-21-705.csv Received shutdown request...