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.39.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 00:47:59,836 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 00:47:59,838 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 00:47:59,850 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 00:47:59,850 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 00:47:59,851 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 00:47:59,854 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 00:47:59,856 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 00:47:59,857 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 00:47:59,858 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 00:47:59,858 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 00:47:59,859 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 00:47:59,860 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 00:47:59,862 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 00:47:59,862 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 00:47:59,863 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 00:47:59,867 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 00:47:59,869 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 00:47:59,871 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 00:47:59,872 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 00:47:59,873 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 00:47:59,875 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 00:47:59,875 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 00:47:59,876 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 00:47:59,876 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 00:47:59,877 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 00:47:59,878 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 00:47:59,879 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 00:47:59,880 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 00:47:59,880 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 00:47:59,881 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 00:47:59,881 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 00:47:59,881 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 00:47:59,882 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 00:47:59,883 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 00:47:59,883 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 00:47:59,897 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 00:47:59,897 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 00:47:59,901 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 00:47:59,902 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 00:47:59,903 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 00:47:59,903 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 00:47:59,903 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 00:47:59,903 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 00:47:59,903 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 00:47:59,904 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 00:47:59,904 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 00:47:59,904 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 00:47:59,904 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 00:47:59,904 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 00:47:59,904 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 00:47:59,905 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 00:47:59,905 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 00:47:59,906 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 00:47:59,906 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 00:47:59,956 INFO ]: Repository-Root is: /tmp [2018-06-22 00:47:59,974 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 00:47:59,982 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 00:47:59,984 INFO ]: Initializing SmtParser... [2018-06-22 00:47:59,984 INFO ]: SmtParser initialized [2018-06-22 00:47:59,984 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental-2lists.39.smt2 [2018-06-22 00:47:59,986 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 00:48:00,084 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental-2lists.39.smt2 unknown [2018-06-22 00:48:01,117 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental-2lists.39.smt2 [2018-06-22 00:48:01,122 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 00:48:01,128 INFO ]: Walking toolchain with 4 elements. [2018-06-22 00:48:01,129 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 00:48:01,129 INFO ]: Initializing ChcToBoogie... [2018-06-22 00:48:01,129 INFO ]: ChcToBoogie initialized [2018-06-22 00:48:01,132 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:48:01" (1/1) ... [2018-06-22 00:48:01,310 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:48:01 Unit [2018-06-22 00:48:01,311 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 00:48:01,311 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 00:48:01,311 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 00:48:01,311 INFO ]: Boogie Preprocessor initialized [2018-06-22 00:48:01,338 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:48:01" (1/1) ... [2018-06-22 00:48:01,338 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:48:01" (1/1) ... [2018-06-22 00:48:01,369 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:48:01" (1/1) ... [2018-06-22 00:48:01,370 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:48:01" (1/1) ... [2018-06-22 00:48:01,392 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:48:01" (1/1) ... [2018-06-22 00:48:01,397 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:48:01" (1/1) ... [2018-06-22 00:48:01,402 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:48:01" (1/1) ... [2018-06-22 00:48:01,409 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 00:48:01,410 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 00:48:01,410 INFO ]: Initializing RCFGBuilder... [2018-06-22 00:48:01,410 INFO ]: RCFGBuilder initialized [2018-06-22 00:48:01,411 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:48:01" (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 00:48:01,430 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 00:48:01,430 INFO ]: Found specification of procedure gotoProc [2018-06-22 00:48:01,430 INFO ]: Found implementation of procedure gotoProc [2018-06-22 00:48:01,430 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 00:48:01,430 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 00:48:01,430 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 00:48:04,052 INFO ]: Using library mode [2018-06-22 00:48:04,052 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:48:04 BoogieIcfgContainer [2018-06-22 00:48:04,052 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 00:48:04,054 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 00:48:04,054 INFO ]: Initializing TraceAbstraction... [2018-06-22 00:48:04,057 INFO ]: TraceAbstraction initialized [2018-06-22 00:48:04,057 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:48:01" (1/3) ... [2018-06-22 00:48:04,058 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d086aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 12:48:04, skipping insertion in model container [2018-06-22 00:48:04,058 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:48:01" (2/3) ... [2018-06-22 00:48:04,058 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d086aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:48:04, skipping insertion in model container [2018-06-22 00:48:04,058 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:48:04" (3/3) ... [2018-06-22 00:48:04,061 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 00:48:04,072 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 00:48:04,079 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 00:48:04,113 INFO ]: Using default assertion order modulation [2018-06-22 00:48:04,114 INFO ]: Interprodecural is true [2018-06-22 00:48:04,114 INFO ]: Hoare is false [2018-06-22 00:48:04,114 INFO ]: Compute interpolants for FPandBP [2018-06-22 00:48:04,114 INFO ]: Backedges is TWOTRACK [2018-06-22 00:48:04,114 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 00:48:04,114 INFO ]: Difference is false [2018-06-22 00:48:04,114 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 00:48:04,114 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 00:48:04,134 INFO ]: Start isEmpty. Operand 146 states. [2018-06-22 00:48:04,152 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 00:48:04,153 INFO ]: Found error trace [2018-06-22 00:48:04,153 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:48:04,154 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:48:04,159 INFO ]: Analyzing trace with hash 1307124790, now seen corresponding path program 1 times [2018-06-22 00:48:04,161 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:48:04,161 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:48:04,192 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:48:04,192 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:48:04,192 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:48:04,240 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:48:04,544 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:48:04,547 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:48:04,547 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:48:04,549 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:48:04,564 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:48:04,564 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:48:04,567 INFO ]: Start difference. First operand 146 states. Second operand 4 states. [2018-06-22 00:48:07,158 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:48:07,158 INFO ]: Finished difference Result 285 states and 573 transitions. [2018-06-22 00:48:07,159 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:48:07,160 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 00:48:07,160 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:48:07,204 INFO ]: With dead ends: 285 [2018-06-22 00:48:07,204 INFO ]: Without dead ends: 275 [2018-06-22 00:48:07,206 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 00:48:07,225 INFO ]: Start minimizeSevpa. Operand 275 states. [2018-06-22 00:48:07,352 INFO ]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-06-22 00:48:07,353 INFO ]: Start removeUnreachable. Operand 275 states. [2018-06-22 00:48:07,372 INFO ]: Finished removeUnreachable. Reduced from 275 states to 275 states and 555 transitions. [2018-06-22 00:48:07,374 INFO ]: Start accepts. Automaton has 275 states and 555 transitions. Word has length 8 [2018-06-22 00:48:07,375 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:48:07,375 INFO ]: Abstraction has 275 states and 555 transitions. [2018-06-22 00:48:07,375 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:48:07,375 INFO ]: Start isEmpty. Operand 275 states and 555 transitions. [2018-06-22 00:48:07,379 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 00:48:07,379 INFO ]: Found error trace [2018-06-22 00:48:07,380 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:48:07,380 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:48:07,380 INFO ]: Analyzing trace with hash 1172290724, now seen corresponding path program 1 times [2018-06-22 00:48:07,380 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:48:07,380 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:48:07,381 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:48:07,381 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:48:07,381 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:48:07,388 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:48:07,558 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:48:07,558 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:48:07,558 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:48:07,559 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:48:07,559 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:48:07,559 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:48:07,560 INFO ]: Start difference. First operand 275 states and 555 transitions. Second operand 4 states. [2018-06-22 00:48:09,468 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:48:09,468 INFO ]: Finished difference Result 411 states and 831 transitions. [2018-06-22 00:48:09,469 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:48:09,469 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 00:48:09,469 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:48:09,490 INFO ]: With dead ends: 411 [2018-06-22 00:48:09,490 INFO ]: Without dead ends: 411 [2018-06-22 00:48:09,491 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 00:48:09,491 INFO ]: Start minimizeSevpa. Operand 411 states. [2018-06-22 00:48:09,568 INFO ]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-06-22 00:48:09,568 INFO ]: Start removeUnreachable. Operand 411 states. [2018-06-22 00:48:09,583 INFO ]: Finished removeUnreachable. Reduced from 411 states to 411 states and 831 transitions. [2018-06-22 00:48:09,583 INFO ]: Start accepts. Automaton has 411 states and 831 transitions. Word has length 8 [2018-06-22 00:48:09,584 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:48:09,584 INFO ]: Abstraction has 411 states and 831 transitions. [2018-06-22 00:48:09,584 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:48:09,584 INFO ]: Start isEmpty. Operand 411 states and 831 transitions. [2018-06-22 00:48:09,611 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-22 00:48:09,611 INFO ]: Found error trace [2018-06-22 00:48:09,612 INFO ]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:48:09,612 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:48:09,612 INFO ]: Analyzing trace with hash 2141041858, now seen corresponding path program 1 times [2018-06-22 00:48:09,612 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:48:09,612 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:48:09,613 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:48:09,613 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:48:09,613 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:48:09,668 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:48:10,048 INFO ]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 00:48:10,048 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 00:48:10,048 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 00:48:10,058 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:48:10,136 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:48:10,147 INFO ]: Computing forward predicates... [2018-06-22 00:48:10,481 INFO ]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 00:48:10,502 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 00:48:10,502 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-06-22 00:48:10,502 INFO ]: Interpolant automaton has 12 states [2018-06-22 00:48:10,502 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 00:48:10,502 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-22 00:48:10,503 INFO ]: Start difference. First operand 411 states and 831 transitions. Second operand 12 states. Received shutdown request... [2018-06-22 00:49:02,757 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-06-22 00:49:02,757 WARN ]: Verification canceled [2018-06-22 00:49:02,762 WARN ]: Timeout [2018-06-22 00:49:02,762 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:49:02 BoogieIcfgContainer [2018-06-22 00:49:02,762 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 00:49:02,763 INFO ]: Toolchain (without parser) took 61640.29 ms. Allocated memory was 321.9 MB in the beginning and 1.3 GB in the end (delta: 997.2 MB). Free memory was 288.3 MB in the beginning and 204.1 MB in the end (delta: 84.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-22 00:49:02,765 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.3 MB. Free memory is still 273.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 00:49:02,767 INFO ]: ChcToBoogie took 182.28 ms. Allocated memory is still 321.9 MB. Free memory was 288.3 MB in the beginning and 282.2 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 3.6 GB. [2018-06-22 00:49:02,768 INFO ]: Boogie Preprocessor took 97.91 ms. Allocated memory is still 321.9 MB. Free memory was 282.2 MB in the beginning and 279.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:49:02,769 INFO ]: RCFGBuilder took 2642.67 ms. Allocated memory was 321.9 MB in the beginning and 354.4 MB in the end (delta: 32.5 MB). Free memory was 279.2 MB in the beginning and 240.1 MB in the end (delta: 39.1 MB). Peak memory consumption was 108.4 MB. Max. memory is 3.6 GB. [2018-06-22 00:49:02,769 INFO ]: TraceAbstraction took 58708.43 ms. Allocated memory was 354.4 MB in the beginning and 1.3 GB in the end (delta: 964.7 MB). Free memory was 240.1 MB in the beginning and 204.1 MB in the end (delta: 36.0 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. [2018-06-22 00:49:02,780 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 308.3 MB. Free memory is still 273.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 182.28 ms. Allocated memory is still 321.9 MB. Free memory was 288.3 MB in the beginning and 282.2 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 97.91 ms. Allocated memory is still 321.9 MB. Free memory was 282.2 MB in the beginning and 279.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 2642.67 ms. Allocated memory was 321.9 MB in the beginning and 354.4 MB in the end (delta: 32.5 MB). Free memory was 279.2 MB in the beginning and 240.1 MB in the end (delta: 39.1 MB). Peak memory consumption was 108.4 MB. Max. memory is 3.6 GB. * TraceAbstraction took 58708.43 ms. Allocated memory was 354.4 MB in the beginning and 1.3 GB in the end (delta: 964.7 MB). Free memory was 240.1 MB in the beginning and 204.1 MB in the end (delta: 36.0 MB). Peak memory consumption was 1.0 GB. 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 (4933 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 146 locations, 1 error locations. TIMEOUT Result, 58.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 56.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3867 SDtfs, 1286 SDslu, 17852 SDs, 0 SdLazy, 47660 SolverSat, 6839 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 48.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 1.7s 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: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 1822 SizeOfPredicates, 7 NumberOfNonLiveVariables, 494 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 10/12 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.39.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_00-49-02-792.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/incremental-2lists.39.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_00-49-02-792.csv Completed graceful shutdown