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/repeat.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:51:31,402 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:51:31,404 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:51:31,415 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:51:31,415 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:51:31,416 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:51:31,418 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:51:31,421 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:51:31,423 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:51:31,424 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:51:31,425 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:51:31,426 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:51:31,427 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:51:31,430 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:51:31,431 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:51:31,431 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:51:31,436 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:51:31,446 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:51:31,448 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:51:31,449 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:51:31,452 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:51:31,456 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-22 01:51:31,465 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:51:31,484 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:51:31,484 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:51:31,484 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:51:31,484 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:51:31,486 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:51:31,486 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:51:31,486 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:51:31,486 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:51:31,487 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:51:31,487 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:51:31,487 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:51:31,487 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:51:31,487 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:51:31,488 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:51:31,488 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:51:31,488 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:51:31,488 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:51:31,490 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:51:31,490 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:51:31,548 INFO ]: Repository-Root is: /tmp [2018-06-22 01:51:31,564 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:51:31,570 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:51:31,572 INFO ]: Initializing SmtParser... [2018-06-22 01:51:31,572 INFO ]: SmtParser initialized [2018-06-22 01:51:31,573 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/repeat.smt2 [2018-06-22 01:51:31,574 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 01:51:31,680 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/repeat.smt2 unknown [2018-06-22 01:51:31,851 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/repeat.smt2 [2018-06-22 01:51:31,856 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:51:31,863 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:51:31,863 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:51:31,863 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:51:31,863 INFO ]: ChcToBoogie initialized [2018-06-22 01:51:31,867 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:51:31" (1/1) ... [2018-06-22 01:51:31,925 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:31 Unit [2018-06-22 01:51:31,925 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:51:31,926 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:51:31,926 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:51:31,926 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:51:31,971 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:31" (1/1) ... [2018-06-22 01:51:31,971 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:31" (1/1) ... [2018-06-22 01:51:31,983 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:31" (1/1) ... [2018-06-22 01:51:31,983 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:31" (1/1) ... [2018-06-22 01:51:31,986 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:31" (1/1) ... [2018-06-22 01:51:31,990 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:31" (1/1) ... [2018-06-22 01:51:31,991 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:31" (1/1) ... [2018-06-22 01:51:31,993 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:51:31,994 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:51:31,994 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:51:31,994 INFO ]: RCFGBuilder initialized [2018-06-22 01:51:31,995 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:31" (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 01:51:32,036 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:51:32,037 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:51:32,037 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:51:32,037 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:51:32,037 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:51:32,037 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 01:51:32,462 INFO ]: Using library mode [2018-06-22 01:51:32,463 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:51:32 BoogieIcfgContainer [2018-06-22 01:51:32,463 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:51:32,464 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:51:32,464 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:51:32,467 INFO ]: TraceAbstraction initialized [2018-06-22 01:51:32,467 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:51:31" (1/3) ... [2018-06-22 01:51:32,468 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ee4fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:51:32, skipping insertion in model container [2018-06-22 01:51:32,468 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:51:31" (2/3) ... [2018-06-22 01:51:32,469 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ee4fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:51:32, skipping insertion in model container [2018-06-22 01:51:32,469 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:51:32" (3/3) ... [2018-06-22 01:51:32,470 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:51:32,485 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:51:32,496 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:51:32,540 INFO ]: Using default assertion order modulation [2018-06-22 01:51:32,540 INFO ]: Interprodecural is true [2018-06-22 01:51:32,540 INFO ]: Hoare is false [2018-06-22 01:51:32,540 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:51:32,540 INFO ]: Backedges is TWOTRACK [2018-06-22 01:51:32,540 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:51:32,540 INFO ]: Difference is false [2018-06-22 01:51:32,540 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:51:32,540 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:51:32,555 INFO ]: Start isEmpty. Operand 15 states. [2018-06-22 01:51:32,566 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:51:32,566 INFO ]: Found error trace [2018-06-22 01:51:32,567 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:32,568 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:32,574 INFO ]: Analyzing trace with hash -1121032005, now seen corresponding path program 1 times [2018-06-22 01:51:32,576 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:32,577 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:32,614 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:32,614 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:32,614 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:32,645 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:32,674 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:51:32,677 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:51:32,677 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 01:51:32,679 INFO ]: Interpolant automaton has 2 states [2018-06-22 01:51:32,695 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 01:51:32,696 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 01:51:32,700 INFO ]: Start difference. First operand 15 states. Second operand 2 states. [2018-06-22 01:51:32,723 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:32,724 INFO ]: Finished difference Result 13 states and 15 transitions. [2018-06-22 01:51:32,724 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 01:51:32,725 INFO ]: Start accepts. Automaton has 2 states. Word has length 7 [2018-06-22 01:51:32,726 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:32,736 INFO ]: With dead ends: 13 [2018-06-22 01:51:32,736 INFO ]: Without dead ends: 13 [2018-06-22 01:51:32,738 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 01:51:32,757 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 01:51:32,784 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 01:51:32,785 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 01:51:32,786 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2018-06-22 01:51:32,787 INFO ]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2018-06-22 01:51:32,787 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:32,787 INFO ]: Abstraction has 13 states and 15 transitions. [2018-06-22 01:51:32,787 INFO ]: Interpolant automaton has 2 states. [2018-06-22 01:51:32,787 INFO ]: Start isEmpty. Operand 13 states and 15 transitions. [2018-06-22 01:51:32,788 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:51:32,788 INFO ]: Found error trace [2018-06-22 01:51:32,788 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:32,788 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:32,789 INFO ]: Analyzing trace with hash -442161169, now seen corresponding path program 1 times [2018-06-22 01:51:32,789 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:32,789 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:32,790 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:32,790 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:32,790 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:32,798 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:32,925 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:51:32,925 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:51:32,925 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:51:32,926 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:51:32,926 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:51:32,927 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:51:32,927 INFO ]: Start difference. First operand 13 states and 15 transitions. Second operand 4 states. [2018-06-22 01:51:33,309 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:33,309 INFO ]: Finished difference Result 21 states and 25 transitions. [2018-06-22 01:51:33,310 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:51:33,310 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 01:51:33,310 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:33,311 INFO ]: With dead ends: 21 [2018-06-22 01:51:33,311 INFO ]: Without dead ends: 21 [2018-06-22 01:51:33,311 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:51:33,312 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 01:51:33,315 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 01:51:33,315 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 01:51:33,316 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2018-06-22 01:51:33,317 INFO ]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 8 [2018-06-22 01:51:33,318 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:33,318 INFO ]: Abstraction has 21 states and 25 transitions. [2018-06-22 01:51:33,318 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:51:33,318 INFO ]: Start isEmpty. Operand 21 states and 25 transitions. [2018-06-22 01:51:33,318 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:51:33,318 INFO ]: Found error trace [2018-06-22 01:51:33,318 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:33,318 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:33,319 INFO ]: Analyzing trace with hash -405309702, now seen corresponding path program 1 times [2018-06-22 01:51:33,319 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:33,319 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:33,320 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:33,320 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:33,320 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:33,330 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:33,372 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:51:33,372 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:51:33,372 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:51:33,372 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:51:33,372 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:51:33,372 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:51:33,373 INFO ]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2018-06-22 01:51:33,440 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:33,440 INFO ]: Finished difference Result 27 states and 33 transitions. [2018-06-22 01:51:33,441 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:51:33,441 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-22 01:51:33,441 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:33,442 INFO ]: With dead ends: 27 [2018-06-22 01:51:33,442 INFO ]: Without dead ends: 27 [2018-06-22 01:51:33,442 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 01:51:33,443 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 01:51:33,447 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 23. [2018-06-22 01:51:33,447 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 01:51:33,449 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2018-06-22 01:51:33,449 INFO ]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 8 [2018-06-22 01:51:33,449 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:33,449 INFO ]: Abstraction has 23 states and 27 transitions. [2018-06-22 01:51:33,449 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:51:33,449 INFO ]: Start isEmpty. Operand 23 states and 27 transitions. [2018-06-22 01:51:33,450 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 01:51:33,450 INFO ]: Found error trace [2018-06-22 01:51:33,450 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:51:33,450 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:51:33,451 INFO ]: Analyzing trace with hash -2135056753, now seen corresponding path program 1 times [2018-06-22 01:51:33,451 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:51:33,451 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:51:33,451 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:33,451 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:33,451 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:51:33,466 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:34,036 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:51:34,036 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:51:34,036 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 01:51:34,046 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:51:34,070 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:51:34,083 INFO ]: Computing forward predicates... [2018-06-22 01:51:34,287 INFO ]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 01:51:34,307 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:51:34,308 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 12 [2018-06-22 01:51:34,308 INFO ]: Interpolant automaton has 12 states [2018-06-22 01:51:34,308 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 01:51:34,308 INFO ]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-06-22 01:51:34,308 INFO ]: Start difference. First operand 23 states and 27 transitions. Second operand 12 states. [2018-06-22 01:51:34,501 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:51:34,501 INFO ]: Finished difference Result 19 states and 22 transitions. [2018-06-22 01:51:34,502 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 01:51:34,502 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 01:51:34,502 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:51:34,502 INFO ]: With dead ends: 19 [2018-06-22 01:51:34,502 INFO ]: Without dead ends: 0 [2018-06-22 01:51:34,503 INFO ]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-06-22 01:51:34,503 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:51:34,503 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:51:34,503 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:51:34,503 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:51:34,503 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-06-22 01:51:34,503 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:51:34,503 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:51:34,503 INFO ]: Interpolant automaton has 12 states. [2018-06-22 01:51:34,503 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:51:34,503 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:51:34,507 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:51:34 BoogieIcfgContainer [2018-06-22 01:51:34,508 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:51:34,508 INFO ]: Toolchain (without parser) took 2651.90 ms. Allocated memory is still 309.3 MB. Free memory was 265.7 MB in the beginning and 271.9 MB in the end (delta: -6.2 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:51:34,510 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:51:34,510 INFO ]: ChcToBoogie took 62.60 ms. Allocated memory is still 309.3 MB. Free memory was 265.7 MB in the beginning and 263.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-22 01:51:34,511 INFO ]: Boogie Preprocessor took 67.29 ms. Allocated memory is still 309.3 MB. Free memory was 263.6 MB in the beginning and 261.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:51:34,511 INFO ]: RCFGBuilder took 468.89 ms. Allocated memory is still 309.3 MB. Free memory was 261.6 MB in the beginning and 254.5 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 3.6 GB. [2018-06-22 01:51:34,512 INFO ]: TraceAbstraction took 2043.41 ms. Allocated memory is still 309.3 MB. Free memory was 253.5 MB in the beginning and 271.9 MB in the end (delta: -18.4 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:51:34,517 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 62.60 ms. Allocated memory is still 309.3 MB. Free memory was 265.7 MB in the beginning and 263.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 67.29 ms. Allocated memory is still 309.3 MB. Free memory was 263.6 MB in the beginning and 261.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 468.89 ms. Allocated memory is still 309.3 MB. Free memory was 261.6 MB in the beginning and 254.5 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2043.41 ms. Allocated memory is still 309.3 MB. Free memory was 253.5 MB in the beginning and 271.9 MB in the end (delta: -18.4 MB). There was no memory consumed. 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, 1.9s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 23 SDslu, 60 SDs, 0 SdLazy, 69 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 2685 SizeOfPredicates, 11 NumberOfNonLiveVariables, 74 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 9/10 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/repeat.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-51-34-534.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/repeat.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-51-34-534.csv Received shutdown request...