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/15.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 00:57:49,685 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 00:57:49,687 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 00:57:49,700 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 00:57:49,700 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 00:57:49,701 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 00:57:49,704 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 00:57:49,706 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 00:57:49,708 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 00:57:49,709 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 00:57:49,710 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 00:57:49,710 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 00:57:49,719 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 00:57:49,720 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 00:57:49,721 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 00:57:49,721 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 00:57:49,723 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 00:57:49,726 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 00:57:49,727 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 00:57:49,728 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 00:57:49,733 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 00:57:49,735 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 00:57:49,735 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 00:57:49,735 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 00:57:49,738 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 00:57:49,738 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 00:57:49,739 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 00:57:49,740 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 00:57:49,740 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 00:57:49,744 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 00:57:49,745 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 00:57:49,745 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 00:57:49,745 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 00:57:49,746 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 00:57:49,747 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 00:57:49,747 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 00:57:49,768 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 00:57:49,768 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 00:57:49,769 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 00:57:49,769 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 00:57:49,770 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 00:57:49,770 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 00:57:49,770 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 00:57:49,770 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 00:57:49,773 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 00:57:49,773 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 00:57:49,773 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 00:57:49,774 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 00:57:49,774 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 00:57:49,774 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 00:57:49,774 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 00:57:49,774 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 00:57:49,774 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 00:57:49,776 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 00:57:49,776 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 00:57:49,822 INFO ]: Repository-Root is: /tmp [2018-06-22 00:57:49,835 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 00:57:49,840 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 00:57:49,841 INFO ]: Initializing SmtParser... [2018-06-22 00:57:49,841 INFO ]: SmtParser initialized [2018-06-22 00:57:49,842 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/15.c.smt2 [2018-06-22 00:57:49,843 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 00:57:49,931 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/15.c.smt2 unknown [2018-06-22 00:57:50,363 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/15.c.smt2 [2018-06-22 00:57:50,368 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 00:57:50,385 INFO ]: Walking toolchain with 4 elements. [2018-06-22 00:57:50,386 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 00:57:50,386 INFO ]: Initializing ChcToBoogie... [2018-06-22 00:57:50,386 INFO ]: ChcToBoogie initialized [2018-06-22 00:57:50,392 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:57:50" (1/1) ... [2018-06-22 00:57:50,462 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:50 Unit [2018-06-22 00:57:50,462 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 00:57:50,463 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 00:57:50,463 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 00:57:50,463 INFO ]: Boogie Preprocessor initialized [2018-06-22 00:57:50,484 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:50" (1/1) ... [2018-06-22 00:57:50,484 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:50" (1/1) ... [2018-06-22 00:57:50,493 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:50" (1/1) ... [2018-06-22 00:57:50,493 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:50" (1/1) ... [2018-06-22 00:57:50,509 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:50" (1/1) ... [2018-06-22 00:57:50,510 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:50" (1/1) ... [2018-06-22 00:57:50,512 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:50" (1/1) ... [2018-06-22 00:57:50,522 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 00:57:50,523 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 00:57:50,523 INFO ]: Initializing RCFGBuilder... [2018-06-22 00:57:50,523 INFO ]: RCFGBuilder initialized [2018-06-22 00:57:50,524 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:50" (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 00:57:50,537 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 00:57:50,537 INFO ]: Found specification of procedure gotoProc [2018-06-22 00:57:50,537 INFO ]: Found implementation of procedure gotoProc [2018-06-22 00:57:50,537 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 00:57:50,537 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 00:57:50,537 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 00:57:50,978 INFO ]: Using library mode [2018-06-22 00:57:50,979 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:57:50 BoogieIcfgContainer [2018-06-22 00:57:50,979 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 00:57:50,980 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 00:57:50,981 INFO ]: Initializing TraceAbstraction... [2018-06-22 00:57:50,985 INFO ]: TraceAbstraction initialized [2018-06-22 00:57:50,985 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:57:50" (1/3) ... [2018-06-22 00:57:50,986 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e14b798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 12:57:50, skipping insertion in model container [2018-06-22 00:57:50,986 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:57:50" (2/3) ... [2018-06-22 00:57:50,986 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e14b798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:57:50, skipping insertion in model container [2018-06-22 00:57:50,986 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:57:50" (3/3) ... [2018-06-22 00:57:50,988 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 00:57:50,998 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 00:57:51,006 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 00:57:51,059 INFO ]: Using default assertion order modulation [2018-06-22 00:57:51,060 INFO ]: Interprodecural is true [2018-06-22 00:57:51,060 INFO ]: Hoare is false [2018-06-22 00:57:51,060 INFO ]: Compute interpolants for FPandBP [2018-06-22 00:57:51,060 INFO ]: Backedges is TWOTRACK [2018-06-22 00:57:51,060 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 00:57:51,060 INFO ]: Difference is false [2018-06-22 00:57:51,060 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 00:57:51,060 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 00:57:51,078 INFO ]: Start isEmpty. Operand 28 states. [2018-06-22 00:57:51,091 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-22 00:57:51,091 INFO ]: Found error trace [2018-06-22 00:57:51,093 INFO ]: trace histogram [1, 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 00:57:51,093 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:57:51,098 INFO ]: Analyzing trace with hash 1586303494, now seen corresponding path program 1 times [2018-06-22 00:57:51,100 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:57:51,101 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:57:51,147 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:57:51,147 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:57:51,147 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:57:51,266 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:57:51,933 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:57:51,936 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:57:51,936 INFO ]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-06-22 00:57:51,938 INFO ]: Interpolant automaton has 14 states [2018-06-22 00:57:51,952 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 00:57:51,953 INFO ]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-06-22 00:57:51,955 INFO ]: Start difference. First operand 28 states. Second operand 14 states. [2018-06-22 00:57:52,811 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:57:52,811 INFO ]: Finished difference Result 37 states and 37 transitions. [2018-06-22 00:57:52,813 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 00:57:52,814 INFO ]: Start accepts. Automaton has 14 states. Word has length 23 [2018-06-22 00:57:52,815 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:57:52,821 INFO ]: With dead ends: 37 [2018-06-22 00:57:52,821 INFO ]: Without dead ends: 31 [2018-06-22 00:57:52,823 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2018-06-22 00:57:52,836 INFO ]: Start minimizeSevpa. Operand 31 states. [2018-06-22 00:57:52,852 INFO ]: Finished minimizeSevpa. Reduced states from 31 to 28. [2018-06-22 00:57:52,854 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-22 00:57:52,854 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-06-22 00:57:52,855 INFO ]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 23 [2018-06-22 00:57:52,855 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:57:52,855 INFO ]: Abstraction has 28 states and 28 transitions. [2018-06-22 00:57:52,855 INFO ]: Interpolant automaton has 14 states. [2018-06-22 00:57:52,856 INFO ]: Start isEmpty. Operand 28 states and 28 transitions. [2018-06-22 00:57:52,856 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-22 00:57:52,856 INFO ]: Found error trace [2018-06-22 00:57:52,856 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, 1, 1, 1, 1] [2018-06-22 00:57:52,856 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:57:52,857 INFO ]: Analyzing trace with hash 1283189278, now seen corresponding path program 1 times [2018-06-22 00:57:52,857 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:57:52,857 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:57:52,857 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:57:52,857 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:57:52,857 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:57:52,895 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:57:53,368 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:57:53,368 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 00:57:53,368 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 00:57:53,378 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:57:53,466 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:57:53,478 INFO ]: Computing forward predicates... [2018-06-22 00:57:53,722 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:57:53,750 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 00:57:53,750 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 24 [2018-06-22 00:57:53,751 INFO ]: Interpolant automaton has 24 states [2018-06-22 00:57:53,751 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 00:57:53,751 INFO ]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2018-06-22 00:57:53,751 INFO ]: Start difference. First operand 28 states and 28 transitions. Second operand 24 states. [2018-06-22 00:57:54,611 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:57:54,611 INFO ]: Finished difference Result 39 states and 39 transitions. [2018-06-22 00:57:54,611 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-22 00:57:54,611 INFO ]: Start accepts. Automaton has 24 states. Word has length 27 [2018-06-22 00:57:54,612 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:57:54,612 INFO ]: With dead ends: 39 [2018-06-22 00:57:54,612 INFO ]: Without dead ends: 35 [2018-06-22 00:57:54,614 INFO ]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=306, Invalid=1254, Unknown=0, NotChecked=0, Total=1560 [2018-06-22 00:57:54,614 INFO ]: Start minimizeSevpa. Operand 35 states. [2018-06-22 00:57:54,617 INFO ]: Finished minimizeSevpa. Reduced states from 35 to 32. [2018-06-22 00:57:54,617 INFO ]: Start removeUnreachable. Operand 32 states. [2018-06-22 00:57:54,618 INFO ]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-06-22 00:57:54,618 INFO ]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 27 [2018-06-22 00:57:54,618 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:57:54,618 INFO ]: Abstraction has 32 states and 32 transitions. [2018-06-22 00:57:54,618 INFO ]: Interpolant automaton has 24 states. [2018-06-22 00:57:54,618 INFO ]: Start isEmpty. Operand 32 states and 32 transitions. [2018-06-22 00:57:54,619 INFO ]: Finished isEmpty. Found accepting run of length 32 [2018-06-22 00:57:54,619 INFO ]: Found error trace [2018-06-22 00:57:54,619 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, 1, 1, 1, 1] [2018-06-22 00:57:54,619 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:57:54,620 INFO ]: Analyzing trace with hash 2022766134, now seen corresponding path program 2 times [2018-06-22 00:57:54,620 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:57:54,620 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:57:54,620 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:57:54,620 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:57:54,621 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:57:54,654 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:57:55,046 INFO ]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:57:55,046 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 00:57:55,046 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 00:57:55,053 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 00:57:55,149 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 00:57:55,149 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:57:55,155 INFO ]: Computing forward predicates... [2018-06-22 00:57:55,174 INFO ]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:57:55,204 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 00:57:55,205 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-06-22 00:57:55,205 INFO ]: Interpolant automaton has 22 states [2018-06-22 00:57:55,205 INFO ]: Constructing interpolant automaton starting with 22 interpolants. [2018-06-22 00:57:55,205 INFO ]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2018-06-22 00:57:55,205 INFO ]: Start difference. First operand 32 states and 32 transitions. Second operand 22 states. [2018-06-22 00:57:55,821 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:57:55,821 INFO ]: Finished difference Result 45 states and 45 transitions. [2018-06-22 00:57:55,822 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-06-22 00:57:55,822 INFO ]: Start accepts. Automaton has 22 states. Word has length 31 [2018-06-22 00:57:55,822 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:57:55,822 INFO ]: With dead ends: 45 [2018-06-22 00:57:55,822 INFO ]: Without dead ends: 39 [2018-06-22 00:57:55,823 INFO ]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=449, Invalid=1443, Unknown=0, NotChecked=0, Total=1892 [2018-06-22 00:57:55,823 INFO ]: Start minimizeSevpa. Operand 39 states. [2018-06-22 00:57:55,827 INFO ]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-06-22 00:57:55,827 INFO ]: Start removeUnreachable. Operand 36 states. [2018-06-22 00:57:55,828 INFO ]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-06-22 00:57:55,828 INFO ]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 31 [2018-06-22 00:57:55,828 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:57:55,828 INFO ]: Abstraction has 36 states and 36 transitions. [2018-06-22 00:57:55,828 INFO ]: Interpolant automaton has 22 states. [2018-06-22 00:57:55,828 INFO ]: Start isEmpty. Operand 36 states and 36 transitions. [2018-06-22 00:57:55,829 INFO ]: Finished isEmpty. Found accepting run of length 36 [2018-06-22 00:57:55,829 INFO ]: Found error trace [2018-06-22 00:57:55,829 INFO ]: trace histogram [4, 3, 3, 3, 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 00:57:55,829 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:57:55,829 INFO ]: Analyzing trace with hash 1016215118, now seen corresponding path program 3 times [2018-06-22 00:57:55,829 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:57:55,829 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:57:55,830 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:57:55,830 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 00:57:55,830 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:57:55,863 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:57:56,073 INFO ]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 00:57:56,073 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 00:57:56,073 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 00:57:56,080 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 00:57:56,195 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 00:57:56,195 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:57:56,203 INFO ]: Computing forward predicates... [2018-06-22 00:57:56,619 INFO ]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:57:56,650 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 00:57:56,650 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24] total 32 [2018-06-22 00:57:56,651 INFO ]: Interpolant automaton has 32 states [2018-06-22 00:57:56,651 INFO ]: Constructing interpolant automaton starting with 32 interpolants. [2018-06-22 00:57:56,651 INFO ]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2018-06-22 00:57:56,652 INFO ]: Start difference. First operand 36 states and 36 transitions. Second operand 32 states. [2018-06-22 00:57:58,130 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:57:58,131 INFO ]: Finished difference Result 37 states and 37 transitions. [2018-06-22 00:57:58,131 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-06-22 00:57:58,131 INFO ]: Start accepts. Automaton has 32 states. Word has length 35 [2018-06-22 00:57:58,131 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:57:58,131 INFO ]: With dead ends: 37 [2018-06-22 00:57:58,131 INFO ]: Without dead ends: 0 [2018-06-22 00:57:58,132 INFO ]: 0 DeclaredPredicates, 87 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=583, Invalid=3077, Unknown=0, NotChecked=0, Total=3660 [2018-06-22 00:57:58,132 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 00:57:58,132 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 00:57:58,132 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 00:57:58,132 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 00:57:58,132 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2018-06-22 00:57:58,132 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:57:58,132 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 00:57:58,132 INFO ]: Interpolant automaton has 32 states. [2018-06-22 00:57:58,132 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 00:57:58,132 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 00:57:58,136 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:57:58 BoogieIcfgContainer [2018-06-22 00:57:58,136 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 00:57:58,137 INFO ]: Toolchain (without parser) took 7768.99 ms. Allocated memory was 307.8 MB in the beginning and 442.5 MB in the end (delta: 134.7 MB). Free memory was 251.1 MB in the beginning and 240.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 145.7 MB. Max. memory is 3.6 GB. [2018-06-22 00:57:58,138 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 00:57:58,139 INFO ]: ChcToBoogie took 76.96 ms. Allocated memory is still 307.8 MB. Free memory was 250.2 MB in the beginning and 248.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:57:58,139 INFO ]: Boogie Preprocessor took 59.50 ms. Allocated memory is still 307.8 MB. Free memory was 248.2 MB in the beginning and 246.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:57:58,140 INFO ]: RCFGBuilder took 455.88 ms. Allocated memory is still 307.8 MB. Free memory was 246.2 MB in the beginning and 220.1 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 3.6 GB. [2018-06-22 00:57:58,140 INFO ]: TraceAbstraction took 7155.84 ms. Allocated memory was 307.8 MB in the beginning and 442.5 MB in the end (delta: 134.7 MB). Free memory was 220.1 MB in the beginning and 240.2 MB in the end (delta: -20.1 MB). Peak memory consumption was 114.6 MB. Max. memory is 3.6 GB. [2018-06-22 00:57:58,143 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 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 76.96 ms. Allocated memory is still 307.8 MB. Free memory was 250.2 MB in the beginning and 248.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 59.50 ms. Allocated memory is still 307.8 MB. Free memory was 248.2 MB in the beginning and 246.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 455.88 ms. Allocated memory is still 307.8 MB. Free memory was 246.2 MB in the beginning and 220.1 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 7155.84 ms. Allocated memory was 307.8 MB in the beginning and 442.5 MB in the end (delta: 134.7 MB). Free memory was 220.1 MB in the beginning and 240.2 MB in the end (delta: -20.1 MB). Peak memory consumption was 114.6 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. SAFE Result, 7.0s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 3.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 48 SDtfs, 602 SDslu, 752 SDs, 0 SdLazy, 911 SolverSat, 235 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 202 ConstructedInterpolants, 0 QuantifiedInterpolants, 21646 SizeOfPredicates, 102 NumberOfNonLiveVariables, 1989 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 8/56 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/15.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_00-57-58-157.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/15.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_00-57-58-157.csv Received shutdown request...