java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/HOLA/16.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 00:57:54,727 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 00:57:54,728 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 00:57:54,743 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 00:57:54,743 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 00:57:54,744 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 00:57:54,745 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 00:57:54,747 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 00:57:54,749 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 00:57:54,749 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 00:57:54,752 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 00:57:54,752 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 00:57:54,753 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 00:57:54,754 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 00:57:54,754 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 00:57:54,758 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 00:57:54,760 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 00:57:54,773 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 00:57:54,774 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 00:57:54,775 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 00:57:54,776 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 00:57:54,778 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 00:57:54,779 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 00:57:54,779 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 00:57:54,780 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 00:57:54,781 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 00:57:54,786 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 00:57:54,787 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 00:57:54,788 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... 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[2018-06-22 00:57:54,797 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 00:57:54,816 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 00:57:54,817 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 00:57:54,817 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 00:57:54,817 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 00:57:54,818 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 00:57:54,818 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 00:57:54,818 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 00:57:54,819 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 00:57:54,819 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 00:57:54,819 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 00:57:54,819 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 00:57:54,819 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 00:57:54,820 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 00:57:54,820 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 00:57:54,820 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 00:57:54,820 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 00:57:54,820 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 00:57:54,822 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 00:57:54,822 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 00:57:54,866 INFO ]: Repository-Root is: /tmp [2018-06-22 00:57:54,883 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 00:57:54,887 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 00:57:54,889 INFO ]: Initializing SmtParser... [2018-06-22 00:57:54,889 INFO ]: SmtParser initialized [2018-06-22 00:57:54,890 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/16.c.smt2 [2018-06-22 00:57:54,891 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 00:57:54,979 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/16.c.smt2 unknown [2018-06-22 00:57:55,381 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/16.c.smt2 [2018-06-22 00:57:55,387 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 00:57:55,392 INFO ]: Walking toolchain with 4 elements. [2018-06-22 00:57:55,393 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 00:57:55,393 INFO ]: Initializing ChcToBoogie... [2018-06-22 00:57:55,393 INFO ]: ChcToBoogie initialized [2018-06-22 00:57:55,396 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:57:55" (1/1) ... [2018-06-22 00:57:55,464 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:55 Unit [2018-06-22 00:57:55,464 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 00:57:55,465 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 00:57:55,465 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 00:57:55,465 INFO ]: Boogie Preprocessor initialized [2018-06-22 00:57:55,516 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:55" (1/1) ... [2018-06-22 00:57:55,516 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:55" (1/1) ... [2018-06-22 00:57:55,532 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:55" (1/1) ... [2018-06-22 00:57:55,532 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:55" (1/1) ... [2018-06-22 00:57:55,545 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:55" (1/1) ... [2018-06-22 00:57:55,547 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:55" (1/1) ... [2018-06-22 00:57:55,548 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:55" (1/1) ... [2018-06-22 00:57:55,551 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 00:57:55,552 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 00:57:55,552 INFO ]: Initializing RCFGBuilder... [2018-06-22 00:57:55,552 INFO ]: RCFGBuilder initialized [2018-06-22 00:57:55,562 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:55" (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 00:57:55,572 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 00:57:55,572 INFO ]: Found specification of procedure gotoProc [2018-06-22 00:57:55,572 INFO ]: Found implementation of procedure gotoProc [2018-06-22 00:57:55,572 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 00:57:55,573 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 00:57:55,573 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 00:57:56,023 INFO ]: Using library mode [2018-06-22 00:57:56,023 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:57:56 BoogieIcfgContainer [2018-06-22 00:57:56,023 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 00:57:56,024 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 00:57:56,025 INFO ]: Initializing TraceAbstraction... [2018-06-22 00:57:56,029 INFO ]: TraceAbstraction initialized [2018-06-22 00:57:56,030 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:57:55" (1/3) ... [2018-06-22 00:57:56,030 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780af53a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 12:57:56, skipping insertion in model container [2018-06-22 00:57:56,031 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:55" (2/3) ... [2018-06-22 00:57:56,031 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780af53a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:57:56, skipping insertion in model container [2018-06-22 00:57:56,031 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:57:56" (3/3) ... [2018-06-22 00:57:56,032 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 00:57:56,043 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 00:57:56,050 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 00:57:56,085 INFO ]: Using default assertion order modulation [2018-06-22 00:57:56,086 INFO ]: Interprodecural is true [2018-06-22 00:57:56,086 INFO ]: Hoare is false [2018-06-22 00:57:56,086 INFO ]: Compute interpolants for FPandBP [2018-06-22 00:57:56,086 INFO ]: Backedges is TWOTRACK [2018-06-22 00:57:56,086 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 00:57:56,086 INFO ]: Difference is false [2018-06-22 00:57:56,086 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 00:57:56,086 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 00:57:56,101 INFO ]: Start isEmpty. Operand 26 states. [2018-06-22 00:57:56,114 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-22 00:57:56,114 INFO ]: Found error trace [2018-06-22 00:57:56,115 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:57:56,115 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:57:56,121 INFO ]: Analyzing trace with hash 1853849550, now seen corresponding path program 1 times [2018-06-22 00:57:56,124 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:57:56,124 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:57:56,158 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:57:56,158 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:57:56,158 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:57:56,229 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:57:56,947 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:57:56,953 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:57:56,953 INFO ]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-06-22 00:57:56,955 INFO ]: Interpolant automaton has 13 states [2018-06-22 00:57:56,969 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 00:57:56,969 INFO ]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-06-22 00:57:56,971 INFO ]: Start difference. First operand 26 states. Second operand 13 states. [2018-06-22 00:57:57,313 WARN ]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-06-22 00:57:57,992 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:57:57,992 INFO ]: Finished difference Result 33 states and 36 transitions. [2018-06-22 00:57:57,993 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 00:57:57,994 INFO ]: Start accepts. Automaton has 13 states. Word has length 19 [2018-06-22 00:57:57,994 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:57:58,000 INFO ]: With dead ends: 33 [2018-06-22 00:57:58,000 INFO ]: Without dead ends: 30 [2018-06-22 00:57:58,002 INFO ]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2018-06-22 00:57:58,016 INFO ]: Start minimizeSevpa. Operand 30 states. [2018-06-22 00:57:58,032 INFO ]: Finished minimizeSevpa. Reduced states from 30 to 26. [2018-06-22 00:57:58,033 INFO ]: Start removeUnreachable. Operand 26 states. [2018-06-22 00:57:58,034 INFO ]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-06-22 00:57:58,035 INFO ]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 19 [2018-06-22 00:57:58,035 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:57:58,035 INFO ]: Abstraction has 26 states and 28 transitions. [2018-06-22 00:57:58,035 INFO ]: Interpolant automaton has 13 states. [2018-06-22 00:57:58,035 INFO ]: Start isEmpty. Operand 26 states and 28 transitions. [2018-06-22 00:57:58,036 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-22 00:57:58,036 INFO ]: Found error trace [2018-06-22 00:57:58,036 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:57:58,036 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:57:58,036 INFO ]: Analyzing trace with hash -1317888634, now seen corresponding path program 1 times [2018-06-22 00:57:58,036 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:57:58,036 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:57:58,037 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:57:58,037 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:57:58,037 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:57:58,066 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:57:58,134 INFO ]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:57:58,134 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:57:58,134 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 00:57:58,136 INFO ]: Interpolant automaton has 6 states [2018-06-22 00:57:58,136 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 00:57:58,136 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 00:57:58,138 INFO ]: Start difference. First operand 26 states and 28 transitions. Second operand 6 states. [2018-06-22 00:57:58,292 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:57:58,292 INFO ]: Finished difference Result 37 states and 40 transitions. [2018-06-22 00:57:58,293 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 00:57:58,293 INFO ]: Start accepts. Automaton has 6 states. Word has length 23 [2018-06-22 00:57:58,293 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:57:58,296 INFO ]: With dead ends: 37 [2018-06-22 00:57:58,296 INFO ]: Without dead ends: 36 [2018-06-22 00:57:58,297 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-06-22 00:57:58,297 INFO ]: Start minimizeSevpa. Operand 36 states. [2018-06-22 00:57:58,300 INFO ]: Finished minimizeSevpa. Reduced states from 36 to 27. [2018-06-22 00:57:58,300 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 00:57:58,301 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-06-22 00:57:58,301 INFO ]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 23 [2018-06-22 00:57:58,301 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:57:58,301 INFO ]: Abstraction has 27 states and 29 transitions. [2018-06-22 00:57:58,301 INFO ]: Interpolant automaton has 6 states. [2018-06-22 00:57:58,301 INFO ]: Start isEmpty. Operand 27 states and 29 transitions. [2018-06-22 00:57:58,302 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-22 00:57:58,302 INFO ]: Found error trace [2018-06-22 00:57:58,302 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:57:58,302 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:57:58,302 INFO ]: Analyzing trace with hash -1009851066, now seen corresponding path program 1 times [2018-06-22 00:57:58,302 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:57:58,302 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:57:58,303 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:57:58,303 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:57:58,303 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:57:58,334 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:57:58,645 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:57:58,645 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 00:57:58,645 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 00:57:58,651 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:57:58,720 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:57:58,731 INFO ]: Computing forward predicates... [2018-06-22 00:57:59,195 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:57:59,227 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 00:57:59,227 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2018-06-22 00:57:59,228 INFO ]: Interpolant automaton has 30 states [2018-06-22 00:57:59,228 INFO ]: Constructing interpolant automaton starting with 30 interpolants. [2018-06-22 00:57:59,228 INFO ]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2018-06-22 00:57:59,228 INFO ]: Start difference. First operand 27 states and 29 transitions. Second operand 30 states. [2018-06-22 00:58:01,137 WARN ]: Spent 111.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2018-06-22 00:58:01,221 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:58:01,221 INFO ]: Finished difference Result 68 states and 75 transitions. [2018-06-22 00:58:01,221 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-06-22 00:58:01,221 INFO ]: Start accepts. Automaton has 30 states. Word has length 23 [2018-06-22 00:58:01,222 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:58:01,223 INFO ]: With dead ends: 68 [2018-06-22 00:58:01,223 INFO ]: Without dead ends: 65 [2018-06-22 00:58:01,224 INFO ]: 0 DeclaredPredicates, 58 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=492, Invalid=1860, Unknown=0, NotChecked=0, Total=2352 [2018-06-22 00:58:01,224 INFO ]: Start minimizeSevpa. Operand 65 states. [2018-06-22 00:58:01,229 INFO ]: Finished minimizeSevpa. Reduced states from 65 to 39. [2018-06-22 00:58:01,229 INFO ]: Start removeUnreachable. Operand 39 states. [2018-06-22 00:58:01,230 INFO ]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-06-22 00:58:01,230 INFO ]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 23 [2018-06-22 00:58:01,230 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:58:01,230 INFO ]: Abstraction has 39 states and 41 transitions. [2018-06-22 00:58:01,230 INFO ]: Interpolant automaton has 30 states. [2018-06-22 00:58:01,230 INFO ]: Start isEmpty. Operand 39 states and 41 transitions. [2018-06-22 00:58:01,231 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-22 00:58:01,231 INFO ]: Found error trace [2018-06-22 00:58:01,231 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:58:01,231 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:58:01,231 INFO ]: Analyzing trace with hash 648575169, now seen corresponding path program 1 times [2018-06-22 00:58:01,231 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:58:01,231 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:58:01,232 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:58:01,232 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:58:01,232 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:58:01,258 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:58:01,465 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:58:01,466 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 00:58:01,466 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 00:58:01,473 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:58:01,532 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:58:01,536 INFO ]: Computing forward predicates... [2018-06-22 00:58:01,917 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:58:01,938 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 00:58:01,939 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2018-06-22 00:58:01,939 INFO ]: Interpolant automaton has 30 states [2018-06-22 00:58:01,939 INFO ]: Constructing interpolant automaton starting with 30 interpolants. [2018-06-22 00:58:01,939 INFO ]: CoverageRelationStatistics Valid=66, Invalid=804, Unknown=0, NotChecked=0, Total=870 [2018-06-22 00:58:01,940 INFO ]: Start difference. First operand 39 states and 41 transitions. Second operand 30 states. [2018-06-22 00:58:02,961 WARN ]: Spent 201.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2018-06-22 00:58:03,970 WARN ]: Spent 225.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2018-06-22 00:58:04,050 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:58:04,050 INFO ]: Finished difference Result 71 states and 78 transitions. [2018-06-22 00:58:04,050 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-06-22 00:58:04,051 INFO ]: Start accepts. Automaton has 30 states. Word has length 23 [2018-06-22 00:58:04,051 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:58:04,052 INFO ]: With dead ends: 71 [2018-06-22 00:58:04,052 INFO ]: Without dead ends: 68 [2018-06-22 00:58:04,053 INFO ]: 0 DeclaredPredicates, 58 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=493, Invalid=1859, Unknown=0, NotChecked=0, Total=2352 [2018-06-22 00:58:04,053 INFO ]: Start minimizeSevpa. Operand 68 states. [2018-06-22 00:58:04,056 INFO ]: Finished minimizeSevpa. Reduced states from 68 to 30. [2018-06-22 00:58:04,056 INFO ]: Start removeUnreachable. Operand 30 states. [2018-06-22 00:58:04,057 INFO ]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-06-22 00:58:04,057 INFO ]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 23 [2018-06-22 00:58:04,057 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:58:04,057 INFO ]: Abstraction has 30 states and 32 transitions. [2018-06-22 00:58:04,058 INFO ]: Interpolant automaton has 30 states. [2018-06-22 00:58:04,058 INFO ]: Start isEmpty. Operand 30 states and 32 transitions. [2018-06-22 00:58:04,058 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-22 00:58:04,058 INFO ]: Found error trace [2018-06-22 00:58:04,058 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:58:04,058 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:58:04,058 INFO ]: Analyzing trace with hash 1562543870, now seen corresponding path program 1 times [2018-06-22 00:58:04,058 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:58:04,059 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:58:04,059 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:58:04,059 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:58:04,059 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:58:04,092 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:58:04,140 INFO ]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:58:04,140 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:58:04,140 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 00:58:04,140 INFO ]: Interpolant automaton has 6 states [2018-06-22 00:58:04,140 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 00:58:04,140 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 00:58:04,140 INFO ]: Start difference. First operand 30 states and 32 transitions. Second operand 6 states. [2018-06-22 00:58:04,169 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:58:04,169 INFO ]: Finished difference Result 30 states and 31 transitions. [2018-06-22 00:58:04,171 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 00:58:04,171 INFO ]: Start accepts. Automaton has 6 states. Word has length 27 [2018-06-22 00:58:04,171 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:58:04,171 INFO ]: With dead ends: 30 [2018-06-22 00:58:04,171 INFO ]: Without dead ends: 29 [2018-06-22 00:58:04,172 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-06-22 00:58:04,172 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-22 00:58:04,173 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-06-22 00:58:04,173 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-22 00:58:04,174 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-06-22 00:58:04,174 INFO ]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 27 [2018-06-22 00:58:04,174 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:58:04,174 INFO ]: Abstraction has 29 states and 30 transitions. [2018-06-22 00:58:04,174 INFO ]: Interpolant automaton has 6 states. [2018-06-22 00:58:04,174 INFO ]: Start isEmpty. Operand 29 states and 30 transitions. [2018-06-22 00:58:04,175 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-22 00:58:04,175 INFO ]: Found error trace [2018-06-22 00:58:04,175 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:58:04,175 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:58:04,175 INFO ]: Analyzing trace with hash 1870581438, now seen corresponding path program 2 times [2018-06-22 00:58:04,175 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:58:04,175 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:58:04,176 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:58:04,176 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:58:04,176 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:58:04,192 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:58:04,566 INFO ]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:58:04,566 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 00:58:04,566 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 00:58:04,572 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 00:58:04,627 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 00:58:04,627 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:58:04,632 INFO ]: Computing forward predicates... [2018-06-22 00:58:05,192 INFO ]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:58:05,211 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 00:58:05,211 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 36 [2018-06-22 00:58:05,212 INFO ]: Interpolant automaton has 36 states [2018-06-22 00:58:05,212 INFO ]: Constructing interpolant automaton starting with 36 interpolants. [2018-06-22 00:58:05,212 INFO ]: CoverageRelationStatistics Valid=77, Invalid=1183, Unknown=0, NotChecked=0, Total=1260 [2018-06-22 00:58:05,212 INFO ]: Start difference. First operand 29 states and 30 transitions. Second operand 36 states. [2018-06-22 00:58:06,938 WARN ]: Spent 111.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2018-06-22 00:58:07,167 WARN ]: Spent 122.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 83 [2018-06-22 00:58:07,433 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:58:07,433 INFO ]: Finished difference Result 58 states and 59 transitions. [2018-06-22 00:58:07,433 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-06-22 00:58:07,433 INFO ]: Start accepts. Automaton has 36 states. Word has length 27 [2018-06-22 00:58:07,433 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:58:07,433 INFO ]: With dead ends: 58 [2018-06-22 00:58:07,433 INFO ]: Without dead ends: 28 [2018-06-22 00:58:07,435 INFO ]: 0 DeclaredPredicates, 72 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=679, Invalid=2981, Unknown=0, NotChecked=0, Total=3660 [2018-06-22 00:58:07,435 INFO ]: Start minimizeSevpa. Operand 28 states. [2018-06-22 00:58:07,437 INFO ]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-06-22 00:58:07,437 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-22 00:58:07,438 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-06-22 00:58:07,438 INFO ]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 27 [2018-06-22 00:58:07,438 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:58:07,438 INFO ]: Abstraction has 28 states and 28 transitions. [2018-06-22 00:58:07,438 INFO ]: Interpolant automaton has 36 states. [2018-06-22 00:58:07,438 INFO ]: Start isEmpty. Operand 28 states and 28 transitions. [2018-06-22 00:58:07,438 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-22 00:58:07,438 INFO ]: Found error trace [2018-06-22 00:58:07,438 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:58:07,439 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:58:07,439 INFO ]: Analyzing trace with hash -602133319, now seen corresponding path program 2 times [2018-06-22 00:58:07,439 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:58:07,439 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:58:07,439 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:58:07,439 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 00:58:07,439 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:58:07,452 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:58:07,642 INFO ]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 00:58:07,642 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 00:58:07,642 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 00:58:07,660 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 00:58:07,719 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 00:58:07,719 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:58:07,726 INFO ]: Computing forward predicates... [2018-06-22 00:58:08,261 INFO ]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:58:08,282 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 00:58:08,282 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 35 [2018-06-22 00:58:08,282 INFO ]: Interpolant automaton has 35 states [2018-06-22 00:58:08,282 INFO ]: Constructing interpolant automaton starting with 35 interpolants. [2018-06-22 00:58:08,283 INFO ]: CoverageRelationStatistics Valid=77, Invalid=1113, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 00:58:08,283 INFO ]: Start difference. First operand 28 states and 28 transitions. Second operand 35 states. [2018-06-22 00:58:09,872 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2018-06-22 00:58:10,133 WARN ]: Spent 154.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2018-06-22 00:58:10,446 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:58:10,446 INFO ]: Finished difference Result 33 states and 33 transitions. [2018-06-22 00:58:10,446 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-06-22 00:58:10,446 INFO ]: Start accepts. Automaton has 35 states. Word has length 27 [2018-06-22 00:58:10,447 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:58:10,447 INFO ]: With dead ends: 33 [2018-06-22 00:58:10,447 INFO ]: Without dead ends: 0 [2018-06-22 00:58:10,448 INFO ]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=675, Invalid=2865, Unknown=0, NotChecked=0, Total=3540 [2018-06-22 00:58:10,448 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 00:58:10,448 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 00:58:10,448 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 00:58:10,448 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 00:58:10,448 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-06-22 00:58:10,448 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:58:10,448 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 00:58:10,448 INFO ]: Interpolant automaton has 35 states. [2018-06-22 00:58:10,448 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 00:58:10,448 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 00:58:10,453 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:58:10 BoogieIcfgContainer [2018-06-22 00:58:10,453 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 00:58:10,454 INFO ]: Toolchain (without parser) took 15066.76 ms. Allocated memory was 306.7 MB in the beginning and 525.9 MB in the end (delta: 219.2 MB). Free memory was 251.3 MB in the beginning and 243.3 MB in the end (delta: 7.9 MB). Peak memory consumption was 227.1 MB. Max. memory is 3.6 GB. [2018-06-22 00:58:10,454 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 306.7 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 00:58:10,455 INFO ]: ChcToBoogie took 72.09 ms. Allocated memory is still 306.7 MB. Free memory was 251.3 MB in the beginning and 249.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:58:10,455 INFO ]: Boogie Preprocessor took 85.88 ms. Allocated memory is still 306.7 MB. Free memory was 249.3 MB in the beginning and 247.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:58:10,455 INFO ]: RCFGBuilder took 471.74 ms. Allocated memory is still 306.7 MB. Free memory was 247.3 MB in the beginning and 225.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:58:10,456 INFO ]: TraceAbstraction took 14428.64 ms. Allocated memory was 306.7 MB in the beginning and 525.9 MB in the end (delta: 219.2 MB). Free memory was 225.3 MB in the beginning and 243.3 MB in the end (delta: -18.0 MB). Peak memory consumption was 201.1 MB. Max. memory is 3.6 GB. [2018-06-22 00:58:10,459 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 306.7 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 72.09 ms. Allocated memory is still 306.7 MB. Free memory was 251.3 MB in the beginning and 249.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 85.88 ms. Allocated memory is still 306.7 MB. Free memory was 249.3 MB in the beginning and 247.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 471.74 ms. Allocated memory is still 306.7 MB. Free memory was 247.3 MB in the beginning and 225.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 14428.64 ms. Allocated memory was 306.7 MB in the beginning and 525.9 MB in the end (delta: 219.2 MB). Free memory was 225.3 MB in the beginning and 243.3 MB in the end (delta: -18.0 MB). Peak memory consumption was 201.1 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. SAFE Result, 14.3s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 9.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 131 SDtfs, 1272 SDslu, 2089 SDs, 0 SdLazy, 1479 SolverSat, 500 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 305 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 10.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=3, 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, 7 MinimizatonAttempts, 77 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 269 NumberOfCodeBlocks, 269 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 258 ConstructedInterpolants, 0 QuantifiedInterpolants, 32166 SizeOfPredicates, 240 NumberOfNonLiveVariables, 1750 ConjunctsInSsa, 254 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 14/49 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/16.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_00-58-10-468.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/16.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_00-58-10-468.csv Received shutdown request...