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/hopv/lia/mochi/repeat4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:51:21,515 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:51:21,517 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:51:21,531 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:51:21,531 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:51:21,534 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:51:21,535 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:51:21,538 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:51:21,539 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:51:21,541 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:51:21,542 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:51:21,542 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:51:21,543 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:51:21,544 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:51:21,548 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:51:21,549 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:51:21,551 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:51:21,564 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:51:21,566 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:51:21,567 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:51:21,568 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:51:21,570 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-22 01:51:21,579 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:51:21,592 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:51:21,593 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:51:21,593 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:51:21,593 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:51:21,594 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:51:21,594 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:51:21,595 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:51:21,595 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:51:21,595 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:51:21,595 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:51:21,595 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:51:21,596 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:51:21,596 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:51:21,596 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:51:21,596 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:51:21,596 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:51:21,596 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:51:21,598 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:51:21,598 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:51:21,648 INFO ]: Repository-Root is: /tmp [2018-06-22 01:51:21,665 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:51:21,671 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:51:21,672 INFO ]: Initializing SmtParser... [2018-06-22 01:51:21,672 INFO ]: SmtParser initialized [2018-06-22 01:51:21,673 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/repeat4.smt2 [2018-06-22 01:51:21,674 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 01:51:21,760 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/repeat4.smt2 unknown [2018-06-22 01:51:21,936 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/repeat4.smt2 [2018-06-22 01:51:21,941 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:51:21,951 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:51:21,952 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:51:21,952 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:51:21,952 INFO ]: ChcToBoogie initialized [2018-06-22 01:51:21,956 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:51:21" (1/1) ... [2018-06-22 01:51:22,013 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:22 Unit [2018-06-22 01:51:22,013 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:51:22,014 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:51:22,014 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:51:22,014 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:51:22,038 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:22" (1/1) ... [2018-06-22 01:51:22,038 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:22" (1/1) ... [2018-06-22 01:51:22,044 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:22" (1/1) ... [2018-06-22 01:51:22,044 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:22" (1/1) ... [2018-06-22 01:51:22,046 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:22" (1/1) ... [2018-06-22 01:51:22,049 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:22" (1/1) ... [2018-06-22 01:51:22,050 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:22" (1/1) ... [2018-06-22 01:51:22,052 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:51:22,052 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:51:22,052 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:51:22,052 INFO ]: RCFGBuilder initialized [2018-06-22 01:51:22,053 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:22" (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 01:51:22,068 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:51:22,068 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:51:22,068 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:51:22,068 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:51:22,068 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:51:22,068 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 01:51:22,295 INFO ]: Using library mode [2018-06-22 01:51:22,296 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:51:22 BoogieIcfgContainer [2018-06-22 01:51:22,296 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:51:22,300 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:51:22,300 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:51:22,304 INFO ]: TraceAbstraction initialized [2018-06-22 01:51:22,304 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:51:21" (1/3) ... [2018-06-22 01:51:22,305 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2e358d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:51:22, skipping insertion in model container [2018-06-22 01:51:22,306 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:22" (2/3) ... [2018-06-22 01:51:22,306 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2e358d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:51:22, skipping insertion in model container [2018-06-22 01:51:22,306 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:51:22" (3/3) ... [2018-06-22 01:51:22,308 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:51:22,335 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:51:22,344 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:51:22,434 INFO ]: Using default assertion order modulation [2018-06-22 01:51:22,435 INFO ]: Interprodecural is true [2018-06-22 01:51:22,435 INFO ]: Hoare is false [2018-06-22 01:51:22,435 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:51:22,435 INFO ]: Backedges is TWOTRACK [2018-06-22 01:51:22,435 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:51:22,435 INFO ]: Difference is false [2018-06-22 01:51:22,435 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:51:22,435 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:51:22,455 INFO ]: Start isEmpty. Operand 15 states. [2018-06-22 01:51:22,469 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:51:22,469 INFO ]: Found error trace [2018-06-22 01:51:22,471 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:22,471 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:22,477 INFO ]: Analyzing trace with hash 2141938128, now seen corresponding path program 1 times [2018-06-22 01:51:22,479 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:22,480 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:22,522 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:22,522 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:22,523 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:22,556 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:22,636 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:51:22,637 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:51:22,637 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:51:22,639 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:51:22,649 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:51:22,649 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:51:22,651 INFO ]: Start difference. First operand 15 states. Second operand 4 states. [2018-06-22 01:51:22,817 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:22,817 INFO ]: Finished difference Result 23 states and 27 transitions. [2018-06-22 01:51:22,818 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:51:22,819 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-22 01:51:22,819 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:22,828 INFO ]: With dead ends: 23 [2018-06-22 01:51:22,828 INFO ]: Without dead ends: 23 [2018-06-22 01:51:22,830 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:51:22,847 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 01:51:22,872 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 01:51:22,873 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 01:51:22,875 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2018-06-22 01:51:22,875 INFO ]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 7 [2018-06-22 01:51:22,876 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:22,876 INFO ]: Abstraction has 23 states and 27 transitions. [2018-06-22 01:51:22,876 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:51:22,876 INFO ]: Start isEmpty. Operand 23 states and 27 transitions. [2018-06-22 01:51:22,877 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:51:22,877 INFO ]: Found error trace [2018-06-22 01:51:22,877 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:22,878 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:22,878 INFO ]: Analyzing trace with hash 2022426308, now seen corresponding path program 1 times [2018-06-22 01:51:22,878 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:22,878 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:22,878 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:22,879 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:22,879 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:22,886 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:22,910 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:51:22,910 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:51:22,910 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:51:22,912 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:51:22,912 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:51:22,912 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:51:22,912 INFO ]: Start difference. First operand 23 states and 27 transitions. Second operand 3 states. [2018-06-22 01:51:22,927 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:22,927 INFO ]: Finished difference Result 30 states and 36 transitions. [2018-06-22 01:51:22,927 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:51:22,927 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-22 01:51:22,928 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:22,930 INFO ]: With dead ends: 30 [2018-06-22 01:51:22,930 INFO ]: Without dead ends: 30 [2018-06-22 01:51:22,930 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 01:51:22,931 INFO ]: Start minimizeSevpa. Operand 30 states. [2018-06-22 01:51:22,936 INFO ]: Finished minimizeSevpa. Reduced states from 30 to 24. [2018-06-22 01:51:22,936 INFO ]: Start removeUnreachable. Operand 24 states. [2018-06-22 01:51:22,936 INFO ]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-06-22 01:51:22,937 INFO ]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 8 [2018-06-22 01:51:22,937 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:22,937 INFO ]: Abstraction has 24 states and 27 transitions. [2018-06-22 01:51:22,937 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:51:22,937 INFO ]: Start isEmpty. Operand 24 states and 27 transitions. [2018-06-22 01:51:22,938 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 01:51:22,938 INFO ]: Found error trace [2018-06-22 01:51:22,938 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:22,938 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:22,938 INFO ]: Analyzing trace with hash 1115989743, now seen corresponding path program 1 times [2018-06-22 01:51:22,938 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:22,938 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:22,939 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:22,939 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:22,939 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:22,954 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:23,530 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:51:23,530 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:51:23,530 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 01:51:23,549 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:23,593 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:23,601 INFO ]: Computing forward predicates... [2018-06-22 01:51:23,870 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:51:23,893 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:51:23,893 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-06-22 01:51:23,893 INFO ]: Interpolant automaton has 10 states [2018-06-22 01:51:23,893 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 01:51:23,894 INFO ]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-06-22 01:51:23,894 INFO ]: Start difference. First operand 24 states and 27 transitions. Second operand 10 states. [2018-06-22 01:51:24,633 WARN ]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-06-22 01:51:24,893 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:24,893 INFO ]: Finished difference Result 39 states and 45 transitions. [2018-06-22 01:51:24,894 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 01:51:24,894 INFO ]: Start accepts. Automaton has 10 states. Word has length 17 [2018-06-22 01:51:24,894 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:24,895 INFO ]: With dead ends: 39 [2018-06-22 01:51:24,895 INFO ]: Without dead ends: 32 [2018-06-22 01:51:24,895 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2018-06-22 01:51:24,896 INFO ]: Start minimizeSevpa. Operand 32 states. [2018-06-22 01:51:24,900 INFO ]: Finished minimizeSevpa. Reduced states from 32 to 27. [2018-06-22 01:51:24,900 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 01:51:24,901 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2018-06-22 01:51:24,901 INFO ]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2018-06-22 01:51:24,901 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:24,901 INFO ]: Abstraction has 27 states and 30 transitions. [2018-06-22 01:51:24,901 INFO ]: Interpolant automaton has 10 states. [2018-06-22 01:51:24,901 INFO ]: Start isEmpty. Operand 27 states and 30 transitions. [2018-06-22 01:51:24,902 INFO ]: Finished isEmpty. Found accepting run of length 27 [2018-06-22 01:51:24,903 INFO ]: Found error trace [2018-06-22 01:51:24,903 INFO ]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:24,903 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:24,903 INFO ]: Analyzing trace with hash -1625523550, now seen corresponding path program 2 times [2018-06-22 01:51:24,903 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:24,903 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:24,904 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:24,904 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:24,904 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:24,923 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:25,211 INFO ]: Checked inductivity of 19 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 01:51:25,211 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:51:25,211 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 01:51:25,226 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 01:51:25,261 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 01:51:25,261 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:25,265 INFO ]: Computing forward predicates... [2018-06-22 01:51:25,511 INFO ]: Checked inductivity of 19 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 01:51:25,534 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:51:25,534 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 18 [2018-06-22 01:51:25,534 INFO ]: Interpolant automaton has 18 states [2018-06-22 01:51:25,534 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 01:51:25,534 INFO ]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2018-06-22 01:51:25,535 INFO ]: Start difference. First operand 27 states and 30 transitions. Second operand 18 states. [2018-06-22 01:51:26,149 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:26,149 INFO ]: Finished difference Result 43 states and 48 transitions. [2018-06-22 01:51:26,150 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-06-22 01:51:26,150 INFO ]: Start accepts. Automaton has 18 states. Word has length 26 [2018-06-22 01:51:26,150 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:26,151 INFO ]: With dead ends: 43 [2018-06-22 01:51:26,151 INFO ]: Without dead ends: 37 [2018-06-22 01:51:26,152 INFO ]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=913, Unknown=0, NotChecked=0, Total=1056 [2018-06-22 01:51:26,152 INFO ]: Start minimizeSevpa. Operand 37 states. [2018-06-22 01:51:26,156 INFO ]: Finished minimizeSevpa. Reduced states from 37 to 32. [2018-06-22 01:51:26,156 INFO ]: Start removeUnreachable. Operand 32 states. [2018-06-22 01:51:26,157 INFO ]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2018-06-22 01:51:26,157 INFO ]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 26 [2018-06-22 01:51:26,157 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:26,157 INFO ]: Abstraction has 32 states and 35 transitions. [2018-06-22 01:51:26,158 INFO ]: Interpolant automaton has 18 states. [2018-06-22 01:51:26,158 INFO ]: Start isEmpty. Operand 32 states and 35 transitions. [2018-06-22 01:51:26,159 INFO ]: Finished isEmpty. Found accepting run of length 36 [2018-06-22 01:51:26,159 INFO ]: Found error trace [2018-06-22 01:51:26,159 INFO ]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:26,159 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:26,159 INFO ]: Analyzing trace with hash -252187759, now seen corresponding path program 3 times [2018-06-22 01:51:26,159 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:26,159 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:26,160 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:26,160 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 01:51:26,160 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:26,178 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:26,480 INFO ]: Checked inductivity of 42 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-06-22 01:51:26,481 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:51:26,481 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 01:51:26,489 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 01:51:26,511 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 01:51:26,511 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:26,515 INFO ]: Computing forward predicates... [2018-06-22 01:51:26,896 INFO ]: Checked inductivity of 42 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-22 01:51:26,930 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:51:26,930 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 25 [2018-06-22 01:51:26,930 INFO ]: Interpolant automaton has 25 states [2018-06-22 01:51:26,930 INFO ]: Constructing interpolant automaton starting with 25 interpolants. [2018-06-22 01:51:26,931 INFO ]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2018-06-22 01:51:26,931 INFO ]: Start difference. First operand 32 states and 35 transitions. Second operand 25 states. [2018-06-22 01:51:28,149 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:28,150 INFO ]: Finished difference Result 42 states and 44 transitions. [2018-06-22 01:51:28,150 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-06-22 01:51:28,150 INFO ]: Start accepts. Automaton has 25 states. Word has length 35 [2018-06-22 01:51:28,150 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:28,150 INFO ]: With dead ends: 42 [2018-06-22 01:51:28,150 INFO ]: Without dead ends: 0 [2018-06-22 01:51:28,152 INFO ]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=297, Invalid=2565, Unknown=0, NotChecked=0, Total=2862 [2018-06-22 01:51:28,152 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:51:28,152 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:51:28,152 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:51:28,152 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:51:28,152 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2018-06-22 01:51:28,152 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:28,152 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:51:28,152 INFO ]: Interpolant automaton has 25 states. [2018-06-22 01:51:28,152 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:51:28,152 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:51:28,156 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:51:28 BoogieIcfgContainer [2018-06-22 01:51:28,156 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:51:28,157 INFO ]: Toolchain (without parser) took 6214.81 ms. Allocated memory was 303.0 MB in the beginning and 374.3 MB in the end (delta: 71.3 MB). Free memory was 259.4 MB in the beginning and 221.4 MB in the end (delta: 38.0 MB). Peak memory consumption was 109.3 MB. Max. memory is 3.6 GB. [2018-06-22 01:51:28,157 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 303.0 MB. Free memory is still 268.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:51:28,158 INFO ]: ChcToBoogie took 62.07 ms. Allocated memory is still 303.0 MB. Free memory was 259.4 MB in the beginning and 257.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:51:28,158 INFO ]: Boogie Preprocessor took 37.62 ms. Allocated memory is still 303.0 MB. Free memory was 257.4 MB in the beginning and 256.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 01:51:28,159 INFO ]: RCFGBuilder took 243.66 ms. Allocated memory is still 303.0 MB. Free memory was 256.4 MB in the beginning and 248.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:51:28,160 INFO ]: TraceAbstraction took 5855.79 ms. Allocated memory was 303.0 MB in the beginning and 374.3 MB in the end (delta: 71.3 MB). Free memory was 248.5 MB in the beginning and 221.4 MB in the end (delta: 27.0 MB). Peak memory consumption was 98.3 MB. Max. memory is 3.6 GB. [2018-06-22 01:51:28,163 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 303.0 MB. Free memory is still 268.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 62.07 ms. Allocated memory is still 303.0 MB. Free memory was 259.4 MB in the beginning and 257.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.62 ms. Allocated memory is still 303.0 MB. Free memory was 257.4 MB in the beginning and 256.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 243.66 ms. Allocated memory is still 303.0 MB. Free memory was 256.4 MB in the beginning and 248.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 5855.79 ms. Allocated memory was 303.0 MB in the beginning and 374.3 MB in the end (delta: 71.3 MB). Free memory was 248.5 MB in the beginning and 221.4 MB in the end (delta: 27.0 MB). Peak memory consumption was 98.3 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, 15 locations, 1 error locations. SAFE Result, 5.7s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 80 SDtfs, 131 SDslu, 335 SDs, 0 SdLazy, 678 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 59 SyntacticMatches, 18 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 26453 SizeOfPredicates, 51 NumberOfNonLiveVariables, 291 ConjunctsInSsa, 165 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 76/132 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/repeat4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-51-28-176.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/repeat4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-51-28-176.csv Received shutdown request...