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/inc.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:48:21,301 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:48:21,304 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:48:21,320 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:48:21,321 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:48:21,322 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:48:21,324 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:48:21,326 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:48:21,328 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:48:21,328 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:48:21,330 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:48:21,331 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:48:21,332 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:48:21,335 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:48:21,335 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:48:21,338 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:48:21,340 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:48:21,351 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:48:21,352 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:48:21,353 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:48:21,354 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:48:21,360 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-22 01:48:21,373 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:48:21,398 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:48:21,398 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:48:21,398 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:48:21,399 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:48:21,400 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:48:21,403 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:48:21,403 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:48:21,404 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:48:21,404 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:48:21,404 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:48:21,404 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:48:21,404 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:48:21,404 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:48:21,405 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:48:21,405 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:48:21,405 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:48:21,405 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:48:21,408 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:48:21,408 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:48:21,465 INFO ]: Repository-Root is: /tmp [2018-06-22 01:48:21,485 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:48:21,492 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:48:21,494 INFO ]: Initializing SmtParser... [2018-06-22 01:48:21,494 INFO ]: SmtParser initialized [2018-06-22 01:48:21,495 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/inc.smt2 [2018-06-22 01:48:21,496 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 01:48:21,601 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/inc.smt2 unknown [2018-06-22 01:48:21,887 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/inc.smt2 [2018-06-22 01:48:21,893 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:48:21,910 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:48:21,911 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:48:21,911 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:48:21,911 INFO ]: ChcToBoogie initialized [2018-06-22 01:48:21,914 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:48:21" (1/1) ... [2018-06-22 01:48:21,988 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:21 Unit [2018-06-22 01:48:21,989 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:48:21,990 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:48:21,990 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:48:21,990 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:48:22,012 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:21" (1/1) ... [2018-06-22 01:48:22,012 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:21" (1/1) ... [2018-06-22 01:48:22,020 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:21" (1/1) ... [2018-06-22 01:48:22,020 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:21" (1/1) ... [2018-06-22 01:48:22,029 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:21" (1/1) ... [2018-06-22 01:48:22,039 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:21" (1/1) ... [2018-06-22 01:48:22,040 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:21" (1/1) ... [2018-06-22 01:48:22,042 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:48:22,043 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:48:22,050 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:48:22,050 INFO ]: RCFGBuilder initialized [2018-06-22 01:48:22,051 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:21" (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 01:48:22,066 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:48:22,066 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:48:22,066 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:48:22,066 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:48:22,067 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:48:22,067 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 01:48:22,512 INFO ]: Using library mode [2018-06-22 01:48:22,512 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:48:22 BoogieIcfgContainer [2018-06-22 01:48:22,513 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:48:22,525 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:48:22,525 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:48:22,529 INFO ]: TraceAbstraction initialized [2018-06-22 01:48:22,530 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:48:21" (1/3) ... [2018-06-22 01:48:22,536 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5823b844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:48:22, skipping insertion in model container [2018-06-22 01:48:22,536 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:48:21" (2/3) ... [2018-06-22 01:48:22,536 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5823b844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:48:22, skipping insertion in model container [2018-06-22 01:48:22,536 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:48:22" (3/3) ... [2018-06-22 01:48:22,539 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:48:22,559 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:48:22,573 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:48:22,652 INFO ]: Using default assertion order modulation [2018-06-22 01:48:22,653 INFO ]: Interprodecural is true [2018-06-22 01:48:22,653 INFO ]: Hoare is false [2018-06-22 01:48:22,653 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:48:22,653 INFO ]: Backedges is TWOTRACK [2018-06-22 01:48:22,653 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:48:22,653 INFO ]: Difference is false [2018-06-22 01:48:22,653 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:48:22,653 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:48:22,678 INFO ]: Start isEmpty. Operand 25 states. [2018-06-22 01:48:22,696 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:48:22,696 INFO ]: Found error trace [2018-06-22 01:48:22,698 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:48:22,698 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:48:22,703 INFO ]: Analyzing trace with hash -1756434605, now seen corresponding path program 1 times [2018-06-22 01:48:22,705 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:48:22,706 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:48:22,768 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:22,768 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:48:22,768 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:22,810 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:22,923 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:48:22,925 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:48:22,926 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:48:22,928 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:48:22,947 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:48:22,948 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:48:22,952 INFO ]: Start difference. First operand 25 states. Second operand 4 states. [2018-06-22 01:48:23,479 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:48:23,479 INFO ]: Finished difference Result 38 states and 55 transitions. [2018-06-22 01:48:23,480 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:48:23,481 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-22 01:48:23,481 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:48:23,499 INFO ]: With dead ends: 38 [2018-06-22 01:48:23,499 INFO ]: Without dead ends: 38 [2018-06-22 01:48:23,501 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:48:23,537 INFO ]: Start minimizeSevpa. Operand 38 states. [2018-06-22 01:48:23,583 INFO ]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-06-22 01:48:23,586 INFO ]: Start removeUnreachable. Operand 38 states. [2018-06-22 01:48:23,591 INFO ]: Finished removeUnreachable. Reduced from 38 states to 38 states and 55 transitions. [2018-06-22 01:48:23,592 INFO ]: Start accepts. Automaton has 38 states and 55 transitions. Word has length 7 [2018-06-22 01:48:23,592 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:48:23,592 INFO ]: Abstraction has 38 states and 55 transitions. [2018-06-22 01:48:23,593 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:48:23,593 INFO ]: Start isEmpty. Operand 38 states and 55 transitions. [2018-06-22 01:48:23,595 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 01:48:23,595 INFO ]: Found error trace [2018-06-22 01:48:23,595 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:48:23,596 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:48:23,596 INFO ]: Analyzing trace with hash 90497219, now seen corresponding path program 1 times [2018-06-22 01:48:23,596 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:48:23,596 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:48:23,597 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:23,597 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:48:23,597 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:23,604 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:23,660 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:48:23,660 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:48:23,660 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:48:23,662 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:48:23,662 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:48:23,662 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:48:23,662 INFO ]: Start difference. First operand 38 states and 55 transitions. Second operand 4 states. [2018-06-22 01:48:24,216 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:48:24,216 INFO ]: Finished difference Result 53 states and 77 transitions. [2018-06-22 01:48:24,217 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:48:24,218 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 01:48:24,218 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:48:24,220 INFO ]: With dead ends: 53 [2018-06-22 01:48:24,220 INFO ]: Without dead ends: 53 [2018-06-22 01:48:24,231 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:48:24,231 INFO ]: Start minimizeSevpa. Operand 53 states. [2018-06-22 01:48:24,241 INFO ]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-06-22 01:48:24,241 INFO ]: Start removeUnreachable. Operand 53 states. [2018-06-22 01:48:24,247 INFO ]: Finished removeUnreachable. Reduced from 53 states to 53 states and 77 transitions. [2018-06-22 01:48:24,247 INFO ]: Start accepts. Automaton has 53 states and 77 transitions. Word has length 9 [2018-06-22 01:48:24,248 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:48:24,248 INFO ]: Abstraction has 53 states and 77 transitions. [2018-06-22 01:48:24,248 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:48:24,248 INFO ]: Start isEmpty. Operand 53 states and 77 transitions. [2018-06-22 01:48:24,249 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 01:48:24,249 INFO ]: Found error trace [2018-06-22 01:48:24,257 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:48:24,257 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:48:24,258 INFO ]: Analyzing trace with hash 103754214, now seen corresponding path program 1 times [2018-06-22 01:48:24,258 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:48:24,258 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:48:24,258 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:24,259 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:48:24,259 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:24,267 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:24,287 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:48:24,287 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:48:24,287 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:48:24,288 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:48:24,288 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:48:24,288 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:48:24,288 INFO ]: Start difference. First operand 53 states and 77 transitions. Second operand 4 states. [2018-06-22 01:48:24,637 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:48:24,678 INFO ]: Finished difference Result 68 states and 99 transitions. [2018-06-22 01:48:24,685 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:48:24,686 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 01:48:24,686 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:48:24,688 INFO ]: With dead ends: 68 [2018-06-22 01:48:24,688 INFO ]: Without dead ends: 68 [2018-06-22 01:48:24,689 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:48:24,689 INFO ]: Start minimizeSevpa. Operand 68 states. [2018-06-22 01:48:24,698 INFO ]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-06-22 01:48:24,698 INFO ]: Start removeUnreachable. Operand 68 states. [2018-06-22 01:48:24,701 INFO ]: Finished removeUnreachable. Reduced from 68 states to 68 states and 99 transitions. [2018-06-22 01:48:24,701 INFO ]: Start accepts. Automaton has 68 states and 99 transitions. Word has length 9 [2018-06-22 01:48:24,701 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:48:24,701 INFO ]: Abstraction has 68 states and 99 transitions. [2018-06-22 01:48:24,701 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:48:24,701 INFO ]: Start isEmpty. Operand 68 states and 99 transitions. [2018-06-22 01:48:24,702 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 01:48:24,702 INFO ]: Found error trace [2018-06-22 01:48:24,702 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:48:24,702 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:48:24,702 INFO ]: Analyzing trace with hash -1044133342, now seen corresponding path program 1 times [2018-06-22 01:48:24,702 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:48:24,702 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:48:24,703 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:24,704 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:48:24,704 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:48:24,711 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:48:24,790 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:48:24,843 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:48:24,843 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:48:24,844 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:48:24,844 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:48:24,844 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:48:24,844 INFO ]: Start difference. First operand 68 states and 99 transitions. Second operand 3 states. [2018-06-22 01:48:24,887 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:48:24,887 INFO ]: Finished difference Result 60 states and 83 transitions. [2018-06-22 01:48:24,888 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:48:24,888 INFO ]: Start accepts. Automaton has 3 states. Word has length 10 [2018-06-22 01:48:24,888 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:48:24,888 INFO ]: With dead ends: 60 [2018-06-22 01:48:24,888 INFO ]: Without dead ends: 0 [2018-06-22 01:48:24,888 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 01:48:24,888 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:48:24,888 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:48:24,888 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:48:24,888 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:48:24,889 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-06-22 01:48:24,889 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:48:24,889 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:48:24,889 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:48:24,889 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:48:24,889 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:48:24,895 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:48:24 BoogieIcfgContainer [2018-06-22 01:48:24,895 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:48:24,896 INFO ]: Toolchain (without parser) took 3002.26 ms. Allocated memory was 307.8 MB in the beginning and 324.5 MB in the end (delta: 16.8 MB). Free memory was 260.2 MB in the beginning and 283.6 MB in the end (delta: -23.4 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:48:24,898 INFO ]: SmtParser took 0.12 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:48:24,898 INFO ]: ChcToBoogie took 78.69 ms. Allocated memory is still 307.8 MB. Free memory was 260.2 MB in the beginning and 258.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:48:24,899 INFO ]: Boogie Preprocessor took 52.50 ms. Allocated memory is still 307.8 MB. Free memory was 258.2 MB in the beginning and 256.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:48:24,899 INFO ]: RCFGBuilder took 469.96 ms. Allocated memory is still 307.8 MB. Free memory was 256.1 MB in the beginning and 243.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:48:24,900 INFO ]: TraceAbstraction took 2369.64 ms. Allocated memory was 307.8 MB in the beginning and 324.5 MB in the end (delta: 16.8 MB). Free memory was 243.1 MB in the beginning and 283.6 MB in the end (delta: -40.4 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:48:24,903 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 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 78.69 ms. Allocated memory is still 307.8 MB. Free memory was 260.2 MB in the beginning and 258.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 52.50 ms. Allocated memory is still 307.8 MB. Free memory was 258.2 MB in the beginning and 256.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 469.96 ms. Allocated memory is still 307.8 MB. Free memory was 256.1 MB in the beginning and 243.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2369.64 ms. Allocated memory was 307.8 MB in the beginning and 324.5 MB in the end (delta: 16.8 MB). Free memory was 243.1 MB in the beginning and 283.6 MB in the end (delta: -40.4 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, 25 locations, 1 error locations. SAFE Result, 2.2s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 111 SDtfs, 115 SDslu, 60 SDs, 0 SdLazy, 134 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 521 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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/inc.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-48-24-915.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inc.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-48-24-915.csv Received shutdown request...