java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental-2lists.37.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 00:46:52,709 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 00:46:52,712 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 00:46:52,724 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 00:46:52,724 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 00:46:52,726 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 00:46:52,727 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 00:46:52,732 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 00:46:52,733 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 00:46:52,734 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 00:46:52,735 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 00:46:52,735 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 00:46:52,736 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 00:46:52,737 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 00:46:52,738 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 00:46:52,739 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 00:46:52,741 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 00:46:52,743 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 00:46:52,744 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 00:46:52,745 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 00:46:52,746 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 00:46:52,749 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 00:46:52,749 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 00:46:52,749 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 00:46:52,750 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 00:46:52,751 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 00:46:52,752 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 00:46:52,752 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 00:46:52,753 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 00:46:52,753 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 00:46:52,754 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 00:46:52,755 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 00:46:52,755 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 00:46:52,756 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 00:46:52,756 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 00:46:52,757 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 00:46:52,770 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 00:46:52,770 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 00:46:52,771 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 00:46:52,771 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 00:46:52,772 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 00:46:52,772 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 00:46:52,772 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 00:46:52,772 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 00:46:52,773 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 00:46:52,773 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 00:46:52,773 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 00:46:52,773 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 00:46:52,774 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 00:46:52,774 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 00:46:52,774 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 00:46:52,774 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 00:46:52,774 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 00:46:52,776 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 00:46:52,776 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 00:46:52,815 INFO ]: Repository-Root is: /tmp [2018-06-22 00:46:52,832 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 00:46:52,839 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 00:46:52,840 INFO ]: Initializing SmtParser... [2018-06-22 00:46:52,840 INFO ]: SmtParser initialized [2018-06-22 00:46:52,841 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental-2lists.37.smt2 [2018-06-22 00:46:52,843 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 00:46:52,935 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental-2lists.37.smt2 unknown [2018-06-22 00:46:53,877 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental-2lists.37.smt2 [2018-06-22 00:46:53,882 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 00:46:53,888 INFO ]: Walking toolchain with 4 elements. [2018-06-22 00:46:53,888 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 00:46:53,889 INFO ]: Initializing ChcToBoogie... [2018-06-22 00:46:53,889 INFO ]: ChcToBoogie initialized [2018-06-22 00:46:53,895 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:46:53" (1/1) ... [2018-06-22 00:46:53,999 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:53 Unit [2018-06-22 00:46:53,999 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 00:46:54,000 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 00:46:54,000 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 00:46:54,000 INFO ]: Boogie Preprocessor initialized [2018-06-22 00:46:54,020 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:53" (1/1) ... [2018-06-22 00:46:54,020 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:53" (1/1) ... [2018-06-22 00:46:54,043 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:53" (1/1) ... [2018-06-22 00:46:54,043 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:53" (1/1) ... [2018-06-22 00:46:54,066 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:53" (1/1) ... [2018-06-22 00:46:54,071 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:53" (1/1) ... [2018-06-22 00:46:54,088 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:53" (1/1) ... [2018-06-22 00:46:54,097 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 00:46:54,104 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 00:46:54,104 INFO ]: Initializing RCFGBuilder... [2018-06-22 00:46:54,104 INFO ]: RCFGBuilder initialized [2018-06-22 00:46:54,105 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:53" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 00:46:54,118 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 00:46:54,118 INFO ]: Found specification of procedure gotoProc [2018-06-22 00:46:54,118 INFO ]: Found implementation of procedure gotoProc [2018-06-22 00:46:54,118 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 00:46:54,118 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 00:46:54,118 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 00:46:56,361 INFO ]: Using library mode [2018-06-22 00:46:56,362 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:46:56 BoogieIcfgContainer [2018-06-22 00:46:56,362 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 00:46:56,364 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 00:46:56,364 INFO ]: Initializing TraceAbstraction... [2018-06-22 00:46:56,371 INFO ]: TraceAbstraction initialized [2018-06-22 00:46:56,372 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:46:53" (1/3) ... [2018-06-22 00:46:56,372 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597975e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 12:46:56, skipping insertion in model container [2018-06-22 00:46:56,373 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:46:53" (2/3) ... [2018-06-22 00:46:56,373 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597975e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:46:56, skipping insertion in model container [2018-06-22 00:46:56,373 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:46:56" (3/3) ... [2018-06-22 00:46:56,375 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 00:46:56,386 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 00:46:56,395 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 00:46:56,450 INFO ]: Using default assertion order modulation [2018-06-22 00:46:56,451 INFO ]: Interprodecural is true [2018-06-22 00:46:56,451 INFO ]: Hoare is false [2018-06-22 00:46:56,451 INFO ]: Compute interpolants for FPandBP [2018-06-22 00:46:56,451 INFO ]: Backedges is TWOTRACK [2018-06-22 00:46:56,451 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 00:46:56,451 INFO ]: Difference is false [2018-06-22 00:46:56,451 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 00:46:56,451 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 00:46:56,479 INFO ]: Start isEmpty. Operand 146 states. [2018-06-22 00:46:56,498 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 00:46:56,498 INFO ]: Found error trace [2018-06-22 00:46:56,499 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:46:56,499 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:46:56,506 INFO ]: Analyzing trace with hash -171329413, now seen corresponding path program 1 times [2018-06-22 00:46:56,507 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:46:56,508 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:46:56,543 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:56,543 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:46:56,543 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:46:56,643 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:46:56,922 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:46:56,925 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:46:56,925 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:46:56,927 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:46:56,943 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:46:56,944 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:46:56,946 INFO ]: Start difference. First operand 146 states. Second operand 4 states. [2018-06-22 00:46:59,896 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:46:59,896 INFO ]: Finished difference Result 285 states and 577 transitions. [2018-06-22 00:46:59,897 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:46:59,898 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-22 00:46:59,898 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:46:59,950 INFO ]: With dead ends: 285 [2018-06-22 00:46:59,950 INFO ]: Without dead ends: 275 [2018-06-22 00:46:59,952 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 00:46:59,976 INFO ]: Start minimizeSevpa. Operand 275 states. [2018-06-22 00:47:00,163 INFO ]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-06-22 00:47:00,168 INFO ]: Start removeUnreachable. Operand 275 states. [2018-06-22 00:47:00,201 INFO ]: Finished removeUnreachable. Reduced from 275 states to 275 states and 559 transitions. [2018-06-22 00:47:00,204 INFO ]: Start accepts. Automaton has 275 states and 559 transitions. Word has length 7 [2018-06-22 00:47:00,205 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:47:00,205 INFO ]: Abstraction has 275 states and 559 transitions. [2018-06-22 00:47:00,205 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:47:00,205 INFO ]: Start isEmpty. Operand 275 states and 559 transitions. [2018-06-22 00:47:00,216 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 00:47:00,217 INFO ]: Found error trace [2018-06-22 00:47:00,217 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:47:00,217 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:47:00,217 INFO ]: Analyzing trace with hash -305218622, now seen corresponding path program 1 times [2018-06-22 00:47:00,217 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:47:00,217 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:47:00,218 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:47:00,218 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:47:00,218 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:47:00,232 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:47:00,408 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:47:00,408 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:47:00,408 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:47:00,410 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:47:00,410 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:47:00,410 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:47:00,410 INFO ]: Start difference. First operand 275 states and 559 transitions. Second operand 4 states. [2018-06-22 00:47:02,264 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:47:02,264 INFO ]: Finished difference Result 411 states and 837 transitions. [2018-06-22 00:47:02,265 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:47:02,265 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 00:47:02,265 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:47:02,291 INFO ]: With dead ends: 411 [2018-06-22 00:47:02,291 INFO ]: Without dead ends: 411 [2018-06-22 00:47:02,291 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 00:47:02,292 INFO ]: Start minimizeSevpa. Operand 411 states. [2018-06-22 00:47:02,388 INFO ]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-06-22 00:47:02,388 INFO ]: Start removeUnreachable. Operand 411 states. [2018-06-22 00:47:02,407 INFO ]: Finished removeUnreachable. Reduced from 411 states to 411 states and 837 transitions. [2018-06-22 00:47:02,407 INFO ]: Start accepts. Automaton has 411 states and 837 transitions. Word has length 9 [2018-06-22 00:47:02,407 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:47:02,407 INFO ]: Abstraction has 411 states and 837 transitions. [2018-06-22 00:47:02,407 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:47:02,408 INFO ]: Start isEmpty. Operand 411 states and 837 transitions. [2018-06-22 00:47:02,450 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-22 00:47:02,450 INFO ]: Found error trace [2018-06-22 00:47:02,450 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:47:02,450 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:47:02,450 INFO ]: Analyzing trace with hash -1637882527, now seen corresponding path program 1 times [2018-06-22 00:47:02,450 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:47:02,450 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:47:02,451 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:47:02,451 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:47:02,451 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:47:02,498 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:47:02,772 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:47:02,772 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 00:47:02,772 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 00:47:02,787 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:47:02,855 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:47:02,865 INFO ]: Computing forward predicates... [2018-06-22 00:47:03,067 INFO ]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 00:47:03,088 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 00:47:03,088 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-06-22 00:47:03,089 INFO ]: Interpolant automaton has 12 states [2018-06-22 00:47:03,089 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 00:47:03,089 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-22 00:47:03,089 INFO ]: Start difference. First operand 411 states and 837 transitions. Second operand 12 states. Received shutdown request... [2018-06-22 00:47:57,208 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-06-22 00:47:57,209 WARN ]: Verification canceled [2018-06-22 00:47:57,217 WARN ]: Timeout [2018-06-22 00:47:57,217 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:47:57 BoogieIcfgContainer [2018-06-22 00:47:57,217 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 00:47:57,218 INFO ]: Toolchain (without parser) took 63335.48 ms. Allocated memory was 326.6 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 295.9 MB in the beginning and 1.0 GB in the end (delta: -707.7 MB). Peak memory consumption was 310.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:47:57,220 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 00:47:57,220 INFO ]: ChcToBoogie took 110.96 ms. Allocated memory is still 326.6 MB. Free memory was 294.4 MB in the beginning and 289.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 3.6 GB. [2018-06-22 00:47:57,220 INFO ]: Boogie Preprocessor took 103.20 ms. Allocated memory is still 326.6 MB. Free memory was 289.7 MB in the beginning and 286.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 3.6 GB. [2018-06-22 00:47:57,221 INFO ]: RCFGBuilder took 2258.50 ms. Allocated memory was 326.6 MB in the beginning and 364.9 MB in the end (delta: 38.3 MB). Free memory was 286.6 MB in the beginning and 286.2 MB in the end (delta: 439.3 kB). Peak memory consumption was 115.4 MB. Max. memory is 3.6 GB. [2018-06-22 00:47:57,221 INFO ]: TraceAbstraction took 60853.69 ms. Allocated memory was 364.9 MB in the beginning and 1.3 GB in the end (delta: 979.4 MB). Free memory was 286.2 MB in the beginning and 1.0 GB in the end (delta: -717.5 MB). Peak memory consumption was 261.9 MB. Max. memory is 3.6 GB. [2018-06-22 00:47:57,226 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 110.96 ms. Allocated memory is still 326.6 MB. Free memory was 294.4 MB in the beginning and 289.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 103.20 ms. Allocated memory is still 326.6 MB. Free memory was 289.7 MB in the beginning and 286.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 2258.50 ms. Allocated memory was 326.6 MB in the beginning and 364.9 MB in the end (delta: 38.3 MB). Free memory was 286.6 MB in the beginning and 286.2 MB in the end (delta: 439.3 kB). Peak memory consumption was 115.4 MB. Max. memory is 3.6 GB. * TraceAbstraction took 60853.69 ms. Allocated memory was 364.9 MB in the beginning and 1.3 GB in the end (delta: 979.4 MB). Free memory was 286.2 MB in the beginning and 1.0 GB in the end (delta: -717.5 MB). Peak memory consumption was 261.9 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was constructing difference of abstraction (411states) and interpolant automaton (currently 57 states, 12 states before enhancement), while ReachableStatesComputation was computing reachable states (5060 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 146 locations, 1 error locations. TIMEOUT Result, 60.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 59.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7272 SDtfs, 1519 SDslu, 32333 SDs, 0 SdLazy, 46600 SolverSat, 7015 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 49.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=411occurred in iteration=2, 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: 0.3s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1536 SizeOfPredicates, 6 NumberOfNonLiveVariables, 469 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 8/10 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/incremental-2lists.37.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_00-47-57-239.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/incremental-2lists.37.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_00-47-57-239.csv Completed graceful shutdown