java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/ctigar/gulv.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:25:07,739 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:25:07,742 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:25:07,757 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:25:07,757 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:25:07,760 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:25:07,762 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:25:07,765 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:25:07,769 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:25:07,770 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:25:07,771 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:25:07,771 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:25:07,779 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:25:07,781 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:25:07,782 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:25:07,785 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:25:07,787 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:25:07,789 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:25:07,792 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:25:07,797 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:25:07,799 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:25:07,802 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:25:07,802 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:25:07,802 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:25:07,803 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:25:07,804 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:25:07,807 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:25:07,808 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:25:07,809 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:25:07,809 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:25:07,810 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:25:07,810 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:25:07,815 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:25:07,816 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:25:07,817 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:25:07,817 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:25:07,839 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:25:07,839 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:25:07,840 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:25:07,840 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:25:07,841 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:25:07,841 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:25:07,841 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:25:07,842 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:25:07,843 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:25:07,843 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:25:07,843 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:25:07,843 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:25:07,843 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:25:07,844 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:25:07,844 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:25:07,844 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:25:07,844 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:25:07,846 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:25:07,847 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:25:07,901 INFO ]: Repository-Root is: /tmp [2018-06-22 05:25:07,918 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:25:07,922 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:25:07,926 INFO ]: Initializing SmtParser... [2018-06-22 05:25:07,926 INFO ]: SmtParser initialized [2018-06-22 05:25:07,927 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/gulv.c.smt2 [2018-06-22 05:25:07,929 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 05:25:08,034 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/gulv.c.smt2 unknown [2018-06-22 05:25:08,304 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/gulv.c.smt2 [2018-06-22 05:25:08,309 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:25:08,315 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:25:08,316 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:25:08,316 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:25:08,316 INFO ]: ChcToBoogie initialized [2018-06-22 05:25:08,320 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:25:08" (1/1) ... [2018-06-22 05:25:08,390 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:08 Unit [2018-06-22 05:25:08,390 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:25:08,394 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:25:08,394 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:25:08,394 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:25:08,417 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:08" (1/1) ... [2018-06-22 05:25:08,417 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:08" (1/1) ... [2018-06-22 05:25:08,425 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:08" (1/1) ... [2018-06-22 05:25:08,426 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:08" (1/1) ... [2018-06-22 05:25:08,433 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:08" (1/1) ... [2018-06-22 05:25:08,435 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:08" (1/1) ... [2018-06-22 05:25:08,437 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:08" (1/1) ... [2018-06-22 05:25:08,439 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:25:08,440 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:25:08,440 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:25:08,440 INFO ]: RCFGBuilder initialized [2018-06-22 05:25:08,445 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:08" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 05:25:08,459 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:25:08,459 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:25:08,459 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:25:08,459 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:25:08,459 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:25:08,459 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:25:08,804 INFO ]: Using library mode [2018-06-22 05:25:08,805 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:25:08 BoogieIcfgContainer [2018-06-22 05:25:08,805 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:25:08,808 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:25:08,808 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:25:08,812 INFO ]: TraceAbstraction initialized [2018-06-22 05:25:08,812 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:25:08" (1/3) ... [2018-06-22 05:25:08,813 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1096db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:25:08, skipping insertion in model container [2018-06-22 05:25:08,814 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:08" (2/3) ... [2018-06-22 05:25:08,814 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1096db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:25:08, skipping insertion in model container [2018-06-22 05:25:08,814 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:25:08" (3/3) ... [2018-06-22 05:25:08,816 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:25:08,825 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:25:08,833 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:25:08,880 INFO ]: Using default assertion order modulation [2018-06-22 05:25:08,881 INFO ]: Interprodecural is true [2018-06-22 05:25:08,881 INFO ]: Hoare is false [2018-06-22 05:25:08,881 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:25:08,881 INFO ]: Backedges is TWOTRACK [2018-06-22 05:25:08,881 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:25:08,881 INFO ]: Difference is false [2018-06-22 05:25:08,881 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:25:08,881 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:25:08,896 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:25:08,906 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:25:08,906 INFO ]: Found error trace [2018-06-22 05:25:08,907 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:25:08,907 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:25:08,911 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 05:25:08,913 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:25:08,913 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:25:08,950 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:25:08,950 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:25:08,950 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:25:09,005 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:25:09,114 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:25:09,117 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:25:09,117 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:25:09,119 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:25:09,158 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:25:09,159 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:25:09,162 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:25:09,255 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:25:09,255 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:25:09,256 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:25:09,257 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:25:09,257 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:25:09,269 INFO ]: With dead ends: 9 [2018-06-22 05:25:09,269 INFO ]: Without dead ends: 9 [2018-06-22 05:25:09,271 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:25:09,285 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:25:09,306 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:25:09,307 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:25:09,307 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:25:09,313 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:25:09,313 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:25:09,313 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:25:09,313 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:25:09,313 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:25:09,313 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:25:09,313 INFO ]: Found error trace [2018-06-22 05:25:09,313 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:25:09,314 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:25:09,314 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 05:25:09,314 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:25:09,314 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:25:09,315 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:25:09,315 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:25:09,315 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:25:09,352 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:25:09,461 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:25:09,462 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:25:09,462 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 05:25:09,471 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:25:09,527 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:25:09,539 INFO ]: Computing forward predicates... [2018-06-22 05:25:09,964 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:25:09,986 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:25:09,986 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 05:25:09,987 INFO ]: Interpolant automaton has 5 states [2018-06-22 05:25:09,987 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 05:25:09,987 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:25:09,988 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 05:25:10,072 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:25:10,072 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:25:10,073 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 05:25:10,073 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 05:25:10,073 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:25:10,073 INFO ]: With dead ends: 11 [2018-06-22 05:25:10,073 INFO ]: Without dead ends: 11 [2018-06-22 05:25:10,074 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:25:10,074 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:25:10,076 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:25:10,077 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:25:10,077 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:25:10,077 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 05:25:10,077 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:25:10,077 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:25:10,077 INFO ]: Interpolant automaton has 5 states. [2018-06-22 05:25:10,077 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:25:10,078 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:25:10,078 INFO ]: Found error trace [2018-06-22 05:25:10,078 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:25:10,078 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:25:10,078 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-22 05:25:10,078 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:25:10,078 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:25:10,079 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:25:10,079 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:25:10,079 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:25:10,222 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:25:10,724 WARN ]: Spent 345.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-06-22 05:25:11,017 WARN ]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 05:25:11,019 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:25:11,019 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:25:11,019 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) [2018-06-22 05:25:11,037 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:25:11,132 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:25:11,132 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:25:11,137 INFO ]: Computing forward predicates... [2018-06-22 05:25:14,152 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:25:14,200 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:25:14,200 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 05:25:14,200 INFO ]: Interpolant automaton has 7 states [2018-06-22 05:25:14,200 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 05:25:14,200 INFO ]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-22 05:25:14,201 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-06-22 05:25:14,458 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-06-22 05:25:14,611 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:25:14,612 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 05:25:14,612 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 05:25:14,612 INFO ]: Start accepts. Automaton has 7 states. Word has length 10 [2018-06-22 05:25:14,612 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:25:14,612 INFO ]: With dead ends: 12 [2018-06-22 05:25:14,612 INFO ]: Without dead ends: 12 [2018-06-22 05:25:14,613 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-06-22 05:25:14,613 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 05:25:14,615 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 05:25:14,615 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 05:25:14,615 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 05:25:14,616 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-22 05:25:14,616 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:25:14,616 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 05:25:14,616 INFO ]: Interpolant automaton has 7 states. [2018-06-22 05:25:14,616 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 05:25:14,616 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 05:25:14,616 INFO ]: Found error trace [2018-06-22 05:25:14,616 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:25:14,616 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:25:14,616 INFO ]: Analyzing trace with hash -1433955954, now seen corresponding path program 3 times [2018-06-22 05:25:14,616 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:25:14,617 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:25:14,617 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:25:14,617 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:25:14,617 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:25:14,721 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:25:14,952 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:25:14,952 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:25:14,952 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:25:14,966 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:25:15,039 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 05:25:15,039 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:25:15,044 INFO ]: Computing forward predicates... [2018-06-22 05:25:17,016 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:25:17,234 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:25:17,247 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:25:17,279 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:25:17,367 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:25:17,382 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:26:07,120 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:26:09,187 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:26:09,208 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:26:09,209 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-06-22 05:26:09,209 INFO ]: Interpolant automaton has 9 states [2018-06-22 05:26:09,209 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 05:26:09,209 INFO ]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-06-22 05:26:09,209 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 9 states. [2018-06-22 05:26:09,442 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:26:09,442 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 05:26:09,443 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 05:26:09,443 INFO ]: Start accepts. Automaton has 9 states. Word has length 11 [2018-06-22 05:26:09,443 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:26:09,443 INFO ]: With dead ends: 13 [2018-06-22 05:26:09,443 INFO ]: Without dead ends: 13 [2018-06-22 05:26:09,444 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-06-22 05:26:09,444 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 05:26:09,445 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 05:26:09,445 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 05:26:09,445 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 05:26:09,446 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-22 05:26:09,446 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:26:09,446 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 05:26:09,446 INFO ]: Interpolant automaton has 9 states. [2018-06-22 05:26:09,446 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 05:26:09,446 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 05:26:09,446 INFO ]: Found error trace [2018-06-22 05:26:09,446 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:26:09,446 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:26:09,446 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 4 times [2018-06-22 05:26:09,446 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:26:09,446 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:26:09,447 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:26:09,447 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:26:09,447 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:26:09,528 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:26:09,875 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:26:09,875 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:26:09,875 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:26:09,883 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 05:26:09,963 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 05:26:09,963 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:26:09,967 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 05:26:10,913 INFO ]: Timeout while computing interpolants [2018-06-22 05:26:11,113 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:26:11,114 WARN ]: Verification canceled [2018-06-22 05:26:11,119 WARN ]: Timeout [2018-06-22 05:26:11,119 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:26:11 BoogieIcfgContainer [2018-06-22 05:26:11,120 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:26:11,120 INFO ]: Toolchain (without parser) took 62810.60 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 260.7 MB in the beginning and 629.9 MB in the end (delta: -369.2 MB). Peak memory consumption was 838.7 MB. Max. memory is 3.6 GB. [2018-06-22 05:26:11,121 INFO ]: SmtParser took 0.12 ms. Allocated memory is still 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:26:11,126 INFO ]: ChcToBoogie took 77.85 ms. Allocated memory is still 308.3 MB. Free memory was 259.7 MB in the beginning and 257.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:26:11,127 INFO ]: Boogie Preprocessor took 45.27 ms. Allocated memory is still 308.3 MB. Free memory was 257.7 MB in the beginning and 256.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-22 05:26:11,127 INFO ]: RCFGBuilder took 365.65 ms. Allocated memory is still 308.3 MB. Free memory was 256.6 MB in the beginning and 245.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:26:11,128 INFO ]: TraceAbstraction took 62311.31 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 245.6 MB in the beginning and 629.9 MB in the end (delta: -384.3 MB). Peak memory consumption was 823.7 MB. Max. memory is 3.6 GB. [2018-06-22 05:26:11,133 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.12 ms. Allocated memory is still 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 77.85 ms. Allocated memory is still 308.3 MB. Free memory was 259.7 MB in the beginning and 257.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 45.27 ms. Allocated memory is still 308.3 MB. Free memory was 257.7 MB in the beginning and 256.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 365.65 ms. Allocated memory is still 308.3 MB. Free memory was 256.6 MB in the beginning and 245.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 62311.31 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 245.6 MB in the beginning and 629.9 MB in the end (delta: -384.3 MB). Peak memory consumption was 823.7 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 13 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 18 quantified variables from 19 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 62.2s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 5 SDslu, 66 SDs, 0 SdLazy, 29 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=4, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 58.8s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 2237 SizeOfPredicates, 15 NumberOfNonLiveVariables, 477 ConjunctsInSsa, 99 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/34 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/gulv.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-26-11-148.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/gulv.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-26-11-148.csv Completed graceful shutdown