java -Xss4m -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/ex1.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 12:59:03,709 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 12:59:03,711 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 12:59:03,729 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 12:59:03,729 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 12:59:03,730 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 12:59:03,731 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 12:59:03,735 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 12:59:03,737 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 12:59:03,737 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 12:59:03,738 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 12:59:03,738 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 12:59:03,739 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 12:59:03,740 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 12:59:03,741 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 12:59:03,742 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 12:59:03,743 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 12:59:03,747 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 12:59:03,748 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 12:59:03,749 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 12:59:03,750 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 12:59:03,753 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 12:59:03,753 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 12:59:03,753 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 12:59:03,754 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 12:59:03,755 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 12:59:03,756 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 12:59:03,756 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 12:59:03,757 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 12:59:03,758 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 12:59:03,758 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 12:59:03,759 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 12:59:03,759 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 12:59:03,760 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 12:59:03,761 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 12:59:03,761 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 12:59:03,775 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 12:59:03,775 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 12:59:03,775 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 12:59:03,776 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 12:59:03,777 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 12:59:03,777 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 12:59:03,777 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 12:59:03,777 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 12:59:03,778 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 12:59:03,778 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 12:59:03,778 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 12:59:03,778 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 12:59:03,778 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 12:59:03,778 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 12:59:03,779 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 12:59:03,779 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 12:59:03,779 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 12:59:03,779 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 12:59:03,779 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 12:59:03,780 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 12:59:03,780 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 12:59:03,781 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 12:59:03,781 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 12:59:03,818 INFO ]: Repository-Root is: /tmp [2018-06-25 12:59:03,838 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 12:59:03,843 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 12:59:03,845 INFO ]: Initializing SmtParser... [2018-06-25 12:59:03,845 INFO ]: SmtParser initialized [2018-06-25 12:59:03,846 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/ex1.c.smt2 [2018-06-25 12:59:03,847 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 [2018-06-25 12:59:03,938 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/ex1.c.smt2 unknown [2018-06-25 12:59:04,257 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/ex1.c.smt2 [2018-06-25 12:59:04,261 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 12:59:04,269 INFO ]: Walking toolchain with 4 elements. [2018-06-25 12:59:04,270 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 12:59:04,270 INFO ]: Initializing ChcToBoogie... [2018-06-25 12:59:04,270 INFO ]: ChcToBoogie initialized [2018-06-25 12:59:04,276 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:59:04" (1/1) ... [2018-06-25 12:59:04,331 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:59:04 Unit [2018-06-25 12:59:04,331 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 12:59:04,332 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 12:59:04,332 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 12:59:04,332 INFO ]: Boogie Preprocessor initialized [2018-06-25 12:59:04,353 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:59:04" (1/1) ... [2018-06-25 12:59:04,353 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:59:04" (1/1) ... [2018-06-25 12:59:04,360 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:59:04" (1/1) ... [2018-06-25 12:59:04,361 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:59:04" (1/1) ... [2018-06-25 12:59:04,375 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:59:04" (1/1) ... [2018-06-25 12:59:04,376 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:59:04" (1/1) ... [2018-06-25 12:59:04,377 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:59:04" (1/1) ... [2018-06-25 12:59:04,379 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 12:59:04,379 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 12:59:04,380 INFO ]: Initializing RCFGBuilder... [2018-06-25 12:59:04,380 INFO ]: RCFGBuilder initialized [2018-06-25 12:59:04,380 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:59:04" (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) [2018-06-25 12:59:04,409 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 12:59:04,409 INFO ]: Found specification of procedure gotoProc [2018-06-25 12:59:04,409 INFO ]: Found implementation of procedure gotoProc [2018-06-25 12:59:04,409 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 12:59:04,409 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 12:59:04,409 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 [2018-06-25 12:59:04,681 INFO ]: Using library mode [2018-06-25 12:59:04,681 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:59:04 BoogieIcfgContainer [2018-06-25 12:59:04,682 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 12:59:04,692 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 12:59:04,692 INFO ]: Initializing TraceAbstraction... [2018-06-25 12:59:04,695 INFO ]: TraceAbstraction initialized [2018-06-25 12:59:04,695 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:59:04" (1/3) ... [2018-06-25 12:59:04,696 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a00eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 12:59:04, skipping insertion in model container [2018-06-25 12:59:04,696 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:59:04" (2/3) ... [2018-06-25 12:59:04,696 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a00eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 12:59:04, skipping insertion in model container [2018-06-25 12:59:04,696 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:59:04" (3/3) ... [2018-06-25 12:59:04,698 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 12:59:04,708 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 12:59:04,721 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 12:59:04,772 INFO ]: Using default assertion order modulation [2018-06-25 12:59:04,773 INFO ]: Interprodecural is true [2018-06-25 12:59:04,773 INFO ]: Hoare is false [2018-06-25 12:59:04,773 INFO ]: Compute interpolants for FPandBP [2018-06-25 12:59:04,773 INFO ]: Backedges is TWOTRACK [2018-06-25 12:59:04,773 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 12:59:04,773 INFO ]: Difference is false [2018-06-25 12:59:04,773 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 12:59:04,773 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 12:59:04,789 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 12:59:04,804 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 12:59:04,805 INFO ]: Found error trace [2018-06-25 12:59:04,805 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:59:04,808 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:59:04,813 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-25 12:59:04,816 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:59:04,817 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:59:04,860 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:59:04,861 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:59:04,861 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:59:04,903 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:59:05,010 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:59:05,012 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 12:59:05,012 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 12:59:05,014 INFO ]: Interpolant automaton has 3 states [2018-06-25 12:59:05,026 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 12:59:05,027 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 12:59:05,029 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 12:59:05,113 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:59:05,113 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 12:59:05,113 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 12:59:05,115 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 12:59:05,115 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:59:05,128 INFO ]: With dead ends: 9 [2018-06-25 12:59:05,128 INFO ]: Without dead ends: 9 [2018-06-25 12:59:05,130 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 [2018-06-25 12:59:05,147 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 12:59:05,175 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 12:59:05,177 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 12:59:05,178 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 12:59:05,179 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 12:59:05,179 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:59:05,179 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 12:59:05,179 INFO ]: Interpolant automaton has 3 states. [2018-06-25 12:59:05,179 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 12:59:05,180 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 12:59:05,180 INFO ]: Found error trace [2018-06-25 12:59:05,180 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:59:05,180 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:59:05,180 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-25 12:59:05,180 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:59:05,180 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:59:05,182 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:59:05,182 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:59:05,182 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:59:05,232 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:59:05,373 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:59:05,373 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:59:05,373 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 [2018-06-25 12:59:05,382 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:59:05,435 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:59:05,442 INFO ]: Computing forward predicates... [2018-06-25 12:59:05,815 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:59:05,849 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:59:05,849 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 12:59:05,849 INFO ]: Interpolant automaton has 5 states [2018-06-25 12:59:05,849 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 12:59:05,850 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 12:59:05,850 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 12:59:05,901 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:59:05,902 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 12:59:05,902 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 12:59:05,903 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 12:59:05,903 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:59:05,903 INFO ]: With dead ends: 10 [2018-06-25 12:59:05,903 INFO ]: Without dead ends: 10 [2018-06-25 12:59:05,904 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-25 12:59:05,904 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 12:59:05,905 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 12:59:05,905 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 12:59:05,905 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 12:59:05,906 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 12:59:05,906 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:59:05,906 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 12:59:05,906 INFO ]: Interpolant automaton has 5 states. [2018-06-25 12:59:05,906 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 12:59:05,906 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 12:59:05,906 INFO ]: Found error trace [2018-06-25 12:59:05,906 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:59:05,906 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:59:05,906 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-25 12:59:05,906 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:59:05,906 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:59:05,908 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:59:05,908 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:59:05,908 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:59:05,948 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:59:06,166 WARN ]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-25 12:59:06,363 WARN ]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-25 12:59:06,364 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:59:06,365 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:59:06,365 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 [2018-06-25 12:59:06,377 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 12:59:06,432 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 12:59:06,432 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:59:06,435 INFO ]: Computing forward predicates... [2018-06-25 12:59:07,555 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:59:07,574 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:59:07,574 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-25 12:59:07,575 INFO ]: Interpolant automaton has 6 states [2018-06-25 12:59:07,575 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 12:59:07,575 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-25 12:59:07,575 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-06-25 12:59:07,759 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:59:07,787 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 12:59:07,787 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-25 12:59:07,787 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-25 12:59:07,787 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:59:07,788 INFO ]: With dead ends: 11 [2018-06-25 12:59:07,788 INFO ]: Without dead ends: 11 [2018-06-25 12:59:07,788 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-06-25 12:59:07,788 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 12:59:07,789 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 12:59:07,789 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 12:59:07,789 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 12:59:07,789 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-25 12:59:07,789 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:59:07,789 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 12:59:07,789 INFO ]: Interpolant automaton has 6 states. [2018-06-25 12:59:07,789 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 12:59:07,790 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 12:59:07,790 INFO ]: Found error trace [2018-06-25 12:59:07,790 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:59:07,790 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:59:07,790 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-25 12:59:07,790 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:59:07,790 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:59:07,791 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:59:07,791 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:59:07,791 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:59:07,868 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:59:08,072 WARN ]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-06-25 12:59:08,107 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:59:08,107 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:59:08,107 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 [2018-06-25 12:59:08,113 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 12:59:08,181 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 12:59:08,182 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:59:08,185 INFO ]: Computing forward predicates... [2018-06-25 12:59:09,964 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:59:09,992 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:59:09,992 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-25 12:59:09,992 INFO ]: Interpolant automaton has 8 states [2018-06-25 12:59:09,993 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 12:59:09,993 INFO ]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-06-25 12:59:09,993 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 8 states. [2018-06-25 12:59:10,188 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:59:10,189 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-25 12:59:10,189 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 12:59:10,189 INFO ]: Start accepts. Automaton has 8 states. Word has length 10 [2018-06-25 12:59:10,189 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:59:10,189 INFO ]: With dead ends: 12 [2018-06-25 12:59:10,189 INFO ]: Without dead ends: 12 [2018-06-25 12:59:10,190 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-06-25 12:59:10,190 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-25 12:59:10,191 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-25 12:59:10,192 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-25 12:59:10,192 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-25 12:59:10,192 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-25 12:59:10,192 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:59:10,192 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-25 12:59:10,192 INFO ]: Interpolant automaton has 8 states. [2018-06-25 12:59:10,192 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-25 12:59:10,192 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-25 12:59:10,192 INFO ]: Found error trace [2018-06-25 12:59:10,192 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:59:10,192 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:59:10,193 INFO ]: Analyzing trace with hash 201204236, now seen corresponding path program 4 times [2018-06-25 12:59:10,193 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:59:10,193 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:59:10,193 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:59:10,193 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:59:10,193 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:59:10,256 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:59:10,645 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:59:10,646 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:59:10,646 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 [2018-06-25 12:59:10,651 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-25 12:59:10,678 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-25 12:59:10,679 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:59:10,681 INFO ]: Computing forward predicates... [2018-06-25 12:59:12,738 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 12:59:26,295 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:59:26,331 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:59:26,331 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-06-25 12:59:26,331 INFO ]: Interpolant automaton has 9 states [2018-06-25 12:59:26,331 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-25 12:59:26,332 INFO ]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-06-25 12:59:26,332 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 9 states. [2018-06-25 12:59:26,770 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:59:26,770 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-25 12:59:26,770 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-25 12:59:26,770 INFO ]: Start accepts. Automaton has 9 states. Word has length 11 [2018-06-25 12:59:26,770 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:59:26,771 INFO ]: With dead ends: 13 [2018-06-25 12:59:26,771 INFO ]: Without dead ends: 13 [2018-06-25 12:59:26,771 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2018-06-25 12:59:26,771 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-25 12:59:26,772 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-25 12:59:26,772 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-25 12:59:26,773 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-25 12:59:26,773 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-25 12:59:26,773 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:59:26,773 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-25 12:59:26,773 INFO ]: Interpolant automaton has 9 states. [2018-06-25 12:59:26,773 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-25 12:59:26,773 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-25 12:59:26,773 INFO ]: Found error trace [2018-06-25 12:59:26,773 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:59:26,774 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:59:26,774 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 5 times [2018-06-25 12:59:26,774 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:59:26,774 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:59:26,774 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:59:26,774 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:59:26,774 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:59:26,863 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:59:27,286 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:59:27,287 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:59:27,287 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 [2018-06-25 12:59:27,293 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-25 12:59:27,351 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-25 12:59:27,351 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:59:27,355 INFO ]: Computing forward predicates... [2018-06-25 12:59:28,950 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 12:59:57,455 WARN ]: Spent 142.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 19 [2018-06-25 12:59:57,854 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:59:57,887 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:59:57,887 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2018-06-25 12:59:57,887 INFO ]: Interpolant automaton has 10 states [2018-06-25 12:59:57,887 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-25 12:59:57,887 INFO ]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-06-25 12:59:57,887 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 10 states. [2018-06-25 12:59:59,896 WARN ]: Spent 1.86 s on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2018-06-25 13:00:00,170 WARN ]: Spent 184.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2018-06-25 13:00:00,320 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 13:00:00,320 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-25 13:00:00,320 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-25 13:00:00,320 INFO ]: Start accepts. Automaton has 10 states. Word has length 12 [2018-06-25 13:00:00,320 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 13:00:00,321 INFO ]: With dead ends: 14 [2018-06-25 13:00:00,321 INFO ]: Without dead ends: 14 [2018-06-25 13:00:00,321 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2018-06-25 13:00:00,321 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-25 13:00:00,322 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-25 13:00:00,322 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-25 13:00:00,323 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-25 13:00:00,323 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-25 13:00:00,323 INFO ]: Finished accepts. word is rejected. [2018-06-25 13:00:00,323 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-25 13:00:00,323 INFO ]: Interpolant automaton has 10 states. [2018-06-25 13:00:00,323 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-25 13:00:00,323 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-25 13:00:00,323 INFO ]: Found error trace [2018-06-25 13:00:00,323 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 13:00:00,323 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 13:00:00,323 INFO ]: Analyzing trace with hash 23503628, now seen corresponding path program 6 times [2018-06-25 13:00:00,323 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 13:00:00,324 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 13:00:00,324 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 13:00:00,324 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 13:00:00,324 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 13:00:00,418 INFO ]: Conjunction of SSA is unsat [2018-06-25 13:00:00,841 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 13:00:00,841 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 13:00:00,841 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) [2018-06-25 13:00:00,857 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 13:00:00,914 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-06-25 13:00:00,914 INFO ]: Conjunction of SSA is unsat [2018-06-25 13:00:00,918 INFO ]: Computing forward predicates... [2018-06-25 13:00:02,156 WARN ]: Spent 178.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 10 Received shutdown request... [2018-06-25 13:00:05,653 INFO ]: Timeout while computing interpolants [2018-06-25 13:00:05,854 WARN ]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 13:00:05,854 WARN ]: Verification canceled [2018-06-25 13:00:05,858 WARN ]: Timeout [2018-06-25 13:00:05,859 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 01:00:05 BoogieIcfgContainer [2018-06-25 13:00:05,859 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 13:00:05,860 INFO ]: Toolchain (without parser) took 61597.63 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 262.7 MB in the beginning and 1.2 GB in the end (delta: -931.9 MB). Peak memory consumption was 277.1 MB. Max. memory is 3.6 GB. [2018-06-25 13:00:05,861 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 13:00:05,861 INFO ]: ChcToBoogie took 61.18 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 259.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 13:00:05,861 INFO ]: Boogie Preprocessor took 47.43 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 258.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-25 13:00:05,862 INFO ]: RCFGBuilder took 302.07 ms. Allocated memory is still 309.3 MB. Free memory was 258.7 MB in the beginning and 248.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 3.6 GB. [2018-06-25 13:00:05,862 INFO ]: TraceAbstraction took 61166.69 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 248.6 MB in the beginning and 1.2 GB in the end (delta: -946.0 MB). Peak memory consumption was 263.0 MB. Max. memory is 3.6 GB. [2018-06-25 13:00:05,865 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 61.18 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 259.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 47.43 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 258.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 302.07 ms. Allocated memory is still 309.3 MB. Free memory was 258.7 MB in the beginning and 248.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 61166.69 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 248.6 MB in the beginning and 1.2 GB in the end (delta: -946.0 MB). Peak memory consumption was 263.0 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 14 with TraceHistMax 6, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 17 quantified variables from 8 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 61.0s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 3.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 13 SDslu, 104 SDs, 0 SdLazy, 46 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 38 SyntacticMatches, 11 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.5s 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, 51.1s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 96 ConstructedInterpolants, 1 QuantifiedInterpolants, 5143 SizeOfPredicates, 25 NumberOfNonLiveVariables, 730 ConjunctsInSsa, 157 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/ex1.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_13-00-05-877.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ex1.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_13-00-05-877.csv Completed graceful shutdown