java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:53:37,437 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:53:37,439 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:53:37,457 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:53:37,458 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:53:37,460 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:53:37,461 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:53:37,465 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:53:37,467 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:53:37,469 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:53:37,471 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:53:37,471 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:53:37,472 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:53:37,477 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:53:37,478 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:53:37,480 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:53:37,493 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:53:37,495 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:53:37,497 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:53:37,499 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:53:37,505 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:53:37,507 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:53:37,508 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:53:37,511 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:53:37,513 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:53:37,514 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:53:37,515 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:53:37,515 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:53:37,518 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:53:37,519 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:53:37,520 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:53:37,528 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:53:37,528 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:53:37,529 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:53:37,530 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:53:37,530 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:53:37,556 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:53:37,556 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:53:37,557 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:53:37,557 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:53:37,558 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:53:37,558 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:53:37,559 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:53:37,559 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:53:37,559 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:53:37,559 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:53:37,560 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:53:37,560 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:53:37,560 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:53:37,560 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:53:37,560 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:53:37,560 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:53:37,561 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:53:37,562 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:53:37,564 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:53:37,623 INFO ]: Repository-Root is: /tmp [2018-06-22 05:53:37,642 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:53:37,648 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:53:37,649 INFO ]: Initializing SmtParser... [2018-06-22 05:53:37,650 INFO ]: SmtParser initialized [2018-06-22 05:53:37,650 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq.c.smt2 [2018-06-22 05:53:37,652 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 05:53:37,757 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq.c.smt2 unknown [2018-06-22 05:53:38,083 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq.c.smt2 [2018-06-22 05:53:38,089 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:53:38,095 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:53:38,096 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:53:38,096 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:53:38,096 INFO ]: ChcToBoogie initialized [2018-06-22 05:53:38,103 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:53:38" (1/1) ... [2018-06-22 05:53:38,164 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:53:38 Unit [2018-06-22 05:53:38,164 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:53:38,165 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:53:38,165 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:53:38,165 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:53:38,179 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:53:38" (1/1) ... [2018-06-22 05:53:38,179 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:53:38" (1/1) ... [2018-06-22 05:53:38,185 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:53:38" (1/1) ... [2018-06-22 05:53:38,185 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:53:38" (1/1) ... [2018-06-22 05:53:38,197 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:53:38" (1/1) ... [2018-06-22 05:53:38,199 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:53:38" (1/1) ... [2018-06-22 05:53:38,205 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:53:38" (1/1) ... [2018-06-22 05:53:38,207 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:53:38,208 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:53:38,208 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:53:38,208 INFO ]: RCFGBuilder initialized [2018-06-22 05:53:38,209 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:53:38" (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 05:53:38,219 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:53:38,219 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:53:38,219 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:53:38,219 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:53:38,219 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:53:38,220 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 05:53:38,468 INFO ]: Using library mode [2018-06-22 05:53:38,469 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:53:38 BoogieIcfgContainer [2018-06-22 05:53:38,469 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:53:38,473 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:53:38,473 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:53:38,484 INFO ]: TraceAbstraction initialized [2018-06-22 05:53:38,484 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:53:38" (1/3) ... [2018-06-22 05:53:38,485 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27de33cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:53:38, skipping insertion in model container [2018-06-22 05:53:38,485 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:53:38" (2/3) ... [2018-06-22 05:53:38,485 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27de33cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:53:38, skipping insertion in model container [2018-06-22 05:53:38,485 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:53:38" (3/3) ... [2018-06-22 05:53:38,487 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:53:38,497 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:53:38,507 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:53:38,560 INFO ]: Using default assertion order modulation [2018-06-22 05:53:38,560 INFO ]: Interprodecural is true [2018-06-22 05:53:38,561 INFO ]: Hoare is false [2018-06-22 05:53:38,561 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:53:38,561 INFO ]: Backedges is TWOTRACK [2018-06-22 05:53:38,561 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:53:38,561 INFO ]: Difference is false [2018-06-22 05:53:38,561 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:53:38,561 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:53:38,585 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:53:38,598 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:53:38,598 INFO ]: Found error trace [2018-06-22 05:53:38,599 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:53:38,599 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:53:38,604 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 05:53:38,605 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:53:38,606 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:53:38,640 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:53:38,640 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:53:38,640 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:53:38,677 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:53:38,728 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:53:38,729 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:53:38,730 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:53:38,731 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:53:38,742 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:53:38,742 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:53:38,750 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:53:38,813 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:53:38,814 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:53:38,814 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:53:38,816 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:53:38,816 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:53:38,823 INFO ]: With dead ends: 9 [2018-06-22 05:53:38,823 INFO ]: Without dead ends: 9 [2018-06-22 05:53:38,825 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:53:38,839 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:53:38,868 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:53:38,874 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:53:38,874 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:53:38,876 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:53:38,876 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:53:38,876 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:53:38,876 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:53:38,876 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:53:38,876 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:53:38,876 INFO ]: Found error trace [2018-06-22 05:53:38,876 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:53:38,876 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:53:38,877 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 05:53:38,877 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:53:38,877 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:53:38,878 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:53:38,878 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:53:38,878 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:53:38,952 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:53:39,078 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:53:39,078 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:53:39,078 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 05:53:39,093 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:53:39,165 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:53:39,176 INFO ]: Computing forward predicates... [2018-06-22 05:53:39,631 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:53:39,667 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:53:39,667 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 05:53:39,667 INFO ]: Interpolant automaton has 4 states [2018-06-22 05:53:39,668 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 05:53:39,668 INFO ]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-22 05:53:39,668 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2018-06-22 05:53:39,732 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:53:39,732 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 05:53:39,732 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 05:53:39,732 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 05:53:39,732 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:53:39,733 INFO ]: With dead ends: 10 [2018-06-22 05:53:39,733 INFO ]: Without dead ends: 10 [2018-06-22 05:53:39,734 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-22 05:53:39,734 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 05:53:39,735 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 05:53:39,735 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 05:53:39,735 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 05:53:39,735 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 05:53:39,735 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:53:39,735 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 05:53:39,735 INFO ]: Interpolant automaton has 4 states. [2018-06-22 05:53:39,736 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 05:53:39,736 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 05:53:39,736 INFO ]: Found error trace [2018-06-22 05:53:39,736 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:53:39,736 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:53:39,736 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 05:53:39,736 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:53:39,736 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:53:39,737 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:53:39,737 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:53:39,737 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:53:39,794 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:53:40,034 WARN ]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 05:53:40,195 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:53:40,195 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:53:40,195 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 05:53:40,231 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 05:53:40,303 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:53:40,303 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:53:40,307 INFO ]: Computing forward predicates... [2018-06-22 05:53:43,371 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:53:43,392 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:53:43,392 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-22 05:53:43,392 INFO ]: Interpolant automaton has 6 states [2018-06-22 05:53:43,393 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 05:53:43,393 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:53:43,393 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-06-22 05:53:43,446 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:53:43,446 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:53:43,447 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 05:53:43,447 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-22 05:53:43,447 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:53:43,447 INFO ]: With dead ends: 11 [2018-06-22 05:53:43,447 INFO ]: Without dead ends: 11 [2018-06-22 05:53:43,447 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:53:43,447 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:53:43,449 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:53:43,449 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:53:43,449 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:53:43,449 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 05:53:43,449 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:53:43,449 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:53:43,449 INFO ]: Interpolant automaton has 6 states. [2018-06-22 05:53:43,449 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:53:43,450 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:53:43,450 INFO ]: Found error trace [2018-06-22 05:53:43,450 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:53:43,450 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:53:43,450 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-22 05:53:43,450 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:53:43,450 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:53:43,451 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:53:43,451 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:53:43,451 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:53:43,504 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:53:43,763 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:53:43,763 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:53:43,763 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 05:53:43,770 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:53:43,842 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 05:53:43,842 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:53:43,846 INFO ]: Computing forward predicates... [2018-06-22 05:53:47,554 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:53:53,755 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:53:53,792 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:53:53,793 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 05:53:53,793 INFO ]: Interpolant automaton has 7 states [2018-06-22 05:53:53,793 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 05:53:53,793 INFO ]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-06-22 05:53:53,793 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-06-22 05:53:54,529 WARN ]: Spent 466.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2018-06-22 05:53:54,591 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:53:54,592 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 05:53:54,592 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 05:53:54,592 INFO ]: Start accepts. Automaton has 7 states. Word has length 10 [2018-06-22 05:53:54,592 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:53:54,592 INFO ]: With dead ends: 12 [2018-06-22 05:53:54,592 INFO ]: Without dead ends: 12 [2018-06-22 05:53:54,593 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2018-06-22 05:53:54,593 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 05:53:54,594 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 05:53:54,594 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 05:53:54,594 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 05:53:54,594 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-22 05:53:54,595 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:53:54,595 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 05:53:54,595 INFO ]: Interpolant automaton has 7 states. [2018-06-22 05:53:54,595 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 05:53:54,595 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 05:53:54,595 INFO ]: Found error trace [2018-06-22 05:53:54,595 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:53:54,595 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:53:54,595 INFO ]: Analyzing trace with hash 201204236, now seen corresponding path program 4 times [2018-06-22 05:53:54,595 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:53:54,595 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:53:54,596 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:53:54,596 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:53:54,596 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:53:54,645 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:53:54,817 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:53:54,817 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:53:54,817 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 05:53:54,832 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 05:53:54,875 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 05:53:54,875 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:53:54,879 INFO ]: Computing forward predicates... [2018-06-22 05:54:04,781 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:54:05,674 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:54:05,694 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:54:05,695 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-06-22 05:54:05,695 INFO ]: Interpolant automaton has 9 states [2018-06-22 05:54:05,695 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 05:54:05,695 INFO ]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-06-22 05:54:05,695 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 9 states. [2018-06-22 05:54:05,862 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:54:05,862 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 05:54:05,862 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 05:54:05,862 INFO ]: Start accepts. Automaton has 9 states. Word has length 11 [2018-06-22 05:54:05,862 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:54:05,862 INFO ]: With dead ends: 13 [2018-06-22 05:54:05,862 INFO ]: Without dead ends: 13 [2018-06-22 05:54:05,863 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2018-06-22 05:54:05,863 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 05:54:05,864 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 05:54:05,864 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 05:54:05,864 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 05:54:05,864 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-22 05:54:05,865 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:54:05,865 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 05:54:05,865 INFO ]: Interpolant automaton has 9 states. [2018-06-22 05:54:05,865 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 05:54:05,865 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 05:54:05,865 INFO ]: Found error trace [2018-06-22 05:54:05,865 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:54:05,865 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:54:05,865 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 5 times [2018-06-22 05:54:05,865 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:54:05,865 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:54:05,866 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:54:05,866 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:54:05,866 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:54:05,940 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:54:06,226 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:54:06,226 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:54:06,226 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 05:54:06,234 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 05:54:06,328 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-22 05:54:06,328 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:54:06,333 INFO ]: Computing forward predicates... [2018-06-22 05:54:23,855 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:54:23,924 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:54:23,924 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-06-22 05:54:23,924 INFO ]: Interpolant automaton has 9 states [2018-06-22 05:54:23,924 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 05:54:23,924 INFO ]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-06-22 05:54:23,925 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 9 states. [2018-06-22 05:54:24,166 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:54:24,166 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 05:54:24,166 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 05:54:24,166 INFO ]: Start accepts. Automaton has 9 states. Word has length 12 [2018-06-22 05:54:24,167 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:54:24,167 INFO ]: With dead ends: 14 [2018-06-22 05:54:24,167 INFO ]: Without dead ends: 14 [2018-06-22 05:54:24,167 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2018-06-22 05:54:24,167 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 05:54:24,168 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 05:54:24,169 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 05:54:24,169 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 05:54:24,169 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-22 05:54:24,169 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:54:24,169 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 05:54:24,169 INFO ]: Interpolant automaton has 9 states. [2018-06-22 05:54:24,169 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 05:54:24,169 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 05:54:24,170 INFO ]: Found error trace [2018-06-22 05:54:24,170 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:54:24,170 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:54:24,170 INFO ]: Analyzing trace with hash 23503628, now seen corresponding path program 6 times [2018-06-22 05:54:24,170 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:54:24,170 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:54:24,170 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:54:24,170 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:54:24,171 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:54:24,262 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:54:25,131 WARN ]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 05:54:25,316 WARN ]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-22 05:54:25,377 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:54:25,377 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:54:25,377 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 05:54:25,412 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 05:54:25,465 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-06-22 05:54:25,465 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:54:25,469 INFO ]: Computing forward predicates... [2018-06-22 05:54:33,153 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:54:33,398 WARN ]: expecting exponential blowup for input size 6 Received shutdown request... [2018-06-22 05:54:44,097 INFO ]: Timeout while computing interpolants [2018-06-22 05:54:44,298 WARN ]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:54:44,298 WARN ]: Verification canceled [2018-06-22 05:54:44,373 WARN ]: Timeout [2018-06-22 05:54:44,373 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:54:44 BoogieIcfgContainer [2018-06-22 05:54:44,373 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:54:44,393 INFO ]: Toolchain (without parser) took 66303.25 ms. Allocated memory was 307.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 258.6 MB in the beginning and 403.9 MB in the end (delta: -145.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-22 05:54:44,394 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:54:44,394 INFO ]: ChcToBoogie took 68.46 ms. Allocated memory is still 307.2 MB. Free memory was 258.6 MB in the beginning and 256.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:54:44,394 INFO ]: Boogie Preprocessor took 42.38 ms. Allocated memory is still 307.2 MB. Free memory was 256.6 MB in the beginning and 254.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:54:44,395 INFO ]: RCFGBuilder took 261.60 ms. Allocated memory is still 307.2 MB. Free memory was 254.6 MB in the beginning and 244.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 3.6 GB. [2018-06-22 05:54:44,395 INFO ]: TraceAbstraction took 65900.37 ms. Allocated memory was 307.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 243.5 MB in the beginning and 404.1 MB in the end (delta: -160.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. [2018-06-22 05:54:44,399 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 68.46 ms. Allocated memory is still 307.2 MB. Free memory was 258.6 MB in the beginning and 256.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 42.38 ms. Allocated memory is still 307.2 MB. Free memory was 256.6 MB in the beginning and 254.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 261.60 ms. Allocated memory is still 307.2 MB. Free memory was 254.6 MB in the beginning and 244.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 65900.37 ms. Allocated memory was 307.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 243.5 MB in the beginning and 404.1 MB in the end (delta: -160.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 14 with TraceHistMax 6, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 11 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 65.8s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 11 SDslu, 110 SDs, 0 SdLazy, 45 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 40 SyntacticMatches, 12 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 43.0s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 4075 SizeOfPredicates, 25 NumberOfNonLiveVariables, 890 ConjunctsInSsa, 152 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/70 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/seq.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-54-44-418.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/seq.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-54-44-418.csv Completed graceful shutdown