java -Xss4m -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.36.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 08:34:42,892 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 08:34:42,894 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 08:34:42,905 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 08:34:42,905 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 08:34:42,906 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 08:34:42,908 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 08:34:42,909 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 08:34:42,911 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 08:34:42,912 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 08:34:42,912 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 08:34:42,913 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 08:34:42,914 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 08:34:42,915 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 08:34:42,915 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 08:34:42,916 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 08:34:42,920 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 08:34:42,922 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 08:34:42,935 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 08:34:42,936 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 08:34:42,937 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 08:34:42,939 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 08:34:42,939 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 08:34:42,940 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 08:34:42,940 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 08:34:42,941 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 08:34:42,942 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 08:34:42,948 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 08:34:42,949 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 08:34:42,949 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 08:34:42,950 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 08:34:42,950 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 08:34:42,951 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 08:34:42,951 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 08:34:42,952 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 08:34:42,952 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 08:34:42,984 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 08:34:42,985 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 08:34:42,985 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 08:34:42,985 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 08:34:42,986 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 08:34:42,986 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 08:34:42,986 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 08:34:42,987 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 08:34:42,987 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 08:34:42,987 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 08:34:42,987 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 08:34:42,987 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 08:34:42,988 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 08:34:42,988 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 08:34:42,988 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 08:34:42,988 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 08:34:42,988 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 08:34:42,989 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 08:34:42,990 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 08:34:42,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 08:34:42,990 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 08:34:42,992 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 08:34:42,992 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 08:34:43,040 INFO ]: Repository-Root is: /tmp [2018-06-25 08:34:43,058 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 08:34:43,064 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 08:34:43,065 INFO ]: Initializing SmtParser... [2018-06-25 08:34:43,066 INFO ]: SmtParser initialized [2018-06-25 08:34:43,066 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental.36.smt2 [2018-06-25 08:34:43,068 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 [2018-06-25 08:34:43,159 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental.36.smt2 unknown [2018-06-25 08:34:43,942 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/incremental.36.smt2 [2018-06-25 08:34:43,950 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 08:34:43,955 INFO ]: Walking toolchain with 4 elements. [2018-06-25 08:34:43,956 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 08:34:43,956 INFO ]: Initializing ChcToBoogie... [2018-06-25 08:34:43,956 INFO ]: ChcToBoogie initialized [2018-06-25 08:34:43,959 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:34:43" (1/1) ... [2018-06-25 08:34:44,073 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:34:44 Unit [2018-06-25 08:34:44,073 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 08:34:44,074 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 08:34:44,074 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 08:34:44,074 INFO ]: Boogie Preprocessor initialized [2018-06-25 08:34:44,096 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:34:44" (1/1) ... [2018-06-25 08:34:44,096 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:34:44" (1/1) ... [2018-06-25 08:34:44,144 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:34:44" (1/1) ... [2018-06-25 08:34:44,144 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:34:44" (1/1) ... [2018-06-25 08:34:44,169 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:34:44" (1/1) ... [2018-06-25 08:34:44,173 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:34:44" (1/1) ... [2018-06-25 08:34:44,180 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:34:44" (1/1) ... [2018-06-25 08:34:44,189 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 08:34:44,189 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 08:34:44,189 INFO ]: Initializing RCFGBuilder... [2018-06-25 08:34:44,189 INFO ]: RCFGBuilder initialized [2018-06-25 08:34:44,190 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:34:44" (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) [2018-06-25 08:34:44,200 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 08:34:44,200 INFO ]: Found specification of procedure gotoProc [2018-06-25 08:34:44,200 INFO ]: Found implementation of procedure gotoProc [2018-06-25 08:34:44,200 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 08:34:44,200 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 08:34:44,200 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 [2018-06-25 08:34:46,687 INFO ]: Using library mode [2018-06-25 08:34:46,688 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:34:46 BoogieIcfgContainer [2018-06-25 08:34:46,755 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 08:34:46,757 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 08:34:46,757 INFO ]: Initializing TraceAbstraction... [2018-06-25 08:34:46,760 INFO ]: TraceAbstraction initialized [2018-06-25 08:34:46,760 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:34:43" (1/3) ... [2018-06-25 08:34:46,761 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5e8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 08:34:46, skipping insertion in model container [2018-06-25 08:34:46,761 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:34:44" (2/3) ... [2018-06-25 08:34:46,761 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5e8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 08:34:46, skipping insertion in model container [2018-06-25 08:34:46,761 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:34:46" (3/3) ... [2018-06-25 08:34:46,763 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 08:34:46,770 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 08:34:46,777 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 08:34:46,809 INFO ]: Using default assertion order modulation [2018-06-25 08:34:46,809 INFO ]: Interprodecural is true [2018-06-25 08:34:46,809 INFO ]: Hoare is false [2018-06-25 08:34:46,809 INFO ]: Compute interpolants for FPandBP [2018-06-25 08:34:46,809 INFO ]: Backedges is TWOTRACK [2018-06-25 08:34:46,809 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 08:34:46,809 INFO ]: Difference is false [2018-06-25 08:34:46,809 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 08:34:46,809 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 08:34:46,825 INFO ]: Start isEmpty. Operand 146 states. [2018-06-25 08:34:46,843 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 08:34:46,843 INFO ]: Found error trace [2018-06-25 08:34:46,844 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:34:46,845 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:34:46,850 INFO ]: Analyzing trace with hash 562243547, now seen corresponding path program 1 times [2018-06-25 08:34:46,851 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:34:46,852 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:34:46,899 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:34:46,899 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:34:46,899 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:34:46,948 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:34:47,315 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:34:47,318 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:34:47,318 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 08:34:47,320 INFO ]: Interpolant automaton has 4 states [2018-06-25 08:34:47,335 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 08:34:47,335 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 08:34:47,338 INFO ]: Start difference. First operand 146 states. Second operand 4 states. [2018-06-25 08:34:49,694 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:34:49,694 INFO ]: Finished difference Result 285 states and 555 transitions. [2018-06-25 08:34:49,695 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 08:34:49,696 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-25 08:34:49,696 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:34:49,741 INFO ]: With dead ends: 285 [2018-06-25 08:34:49,741 INFO ]: Without dead ends: 283 [2018-06-25 08:34:49,743 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 [2018-06-25 08:34:49,762 INFO ]: Start minimizeSevpa. Operand 283 states. [2018-06-25 08:34:49,873 INFO ]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-06-25 08:34:49,874 INFO ]: Start removeUnreachable. Operand 283 states. [2018-06-25 08:34:49,899 INFO ]: Finished removeUnreachable. Reduced from 283 states to 283 states and 553 transitions. [2018-06-25 08:34:49,901 INFO ]: Start accepts. Automaton has 283 states and 553 transitions. Word has length 8 [2018-06-25 08:34:49,901 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:34:49,901 INFO ]: Abstraction has 283 states and 553 transitions. [2018-06-25 08:34:49,902 INFO ]: Interpolant automaton has 4 states. [2018-06-25 08:34:49,902 INFO ]: Start isEmpty. Operand 283 states and 553 transitions. [2018-06-25 08:34:49,908 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 08:34:49,909 INFO ]: Found error trace [2018-06-25 08:34:49,909 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:34:49,909 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:34:49,909 INFO ]: Analyzing trace with hash 369073051, now seen corresponding path program 1 times [2018-06-25 08:34:49,909 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:34:49,909 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:34:49,910 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:34:49,910 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:34:49,910 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:34:49,917 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:34:50,151 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:34:50,151 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:34:50,151 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 08:34:50,153 INFO ]: Interpolant automaton has 4 states [2018-06-25 08:34:50,153 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 08:34:50,153 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 08:34:50,153 INFO ]: Start difference. First operand 283 states and 553 transitions. Second operand 4 states. [2018-06-25 08:34:51,722 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:34:51,722 INFO ]: Finished difference Result 423 states and 828 transitions. [2018-06-25 08:34:51,785 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 08:34:51,786 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-25 08:34:51,786 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:34:51,816 INFO ]: With dead ends: 423 [2018-06-25 08:34:51,816 INFO ]: Without dead ends: 423 [2018-06-25 08:34:51,818 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 [2018-06-25 08:34:51,818 INFO ]: Start minimizeSevpa. Operand 423 states. [2018-06-25 08:34:51,914 INFO ]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-06-25 08:34:51,914 INFO ]: Start removeUnreachable. Operand 423 states. [2018-06-25 08:34:51,932 INFO ]: Finished removeUnreachable. Reduced from 423 states to 423 states and 828 transitions. [2018-06-25 08:34:51,932 INFO ]: Start accepts. Automaton has 423 states and 828 transitions. Word has length 9 [2018-06-25 08:34:51,933 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:34:51,933 INFO ]: Abstraction has 423 states and 828 transitions. [2018-06-25 08:34:51,933 INFO ]: Interpolant automaton has 4 states. [2018-06-25 08:34:51,933 INFO ]: Start isEmpty. Operand 423 states and 828 transitions. [2018-06-25 08:34:51,938 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 08:34:51,938 INFO ]: Found error trace [2018-06-25 08:34:51,938 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:34:51,938 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:34:51,938 INFO ]: Analyzing trace with hash -162455611, now seen corresponding path program 1 times [2018-06-25 08:34:51,938 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:34:51,938 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:34:51,939 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:34:51,939 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:34:51,939 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:34:51,964 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:34:52,187 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:34:52,187 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:34:52,187 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 08:34:52,187 INFO ]: Interpolant automaton has 4 states [2018-06-25 08:34:52,187 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 08:34:52,187 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 08:34:52,187 INFO ]: Start difference. First operand 423 states and 828 transitions. Second operand 4 states. [2018-06-25 08:34:53,501 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:34:53,502 INFO ]: Finished difference Result 562 states and 1102 transitions. [2018-06-25 08:34:53,502 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 08:34:53,502 INFO ]: Start accepts. Automaton has 4 states. Word has length 10 [2018-06-25 08:34:53,502 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:34:53,544 INFO ]: With dead ends: 562 [2018-06-25 08:34:53,544 INFO ]: Without dead ends: 562 [2018-06-25 08:34:53,545 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 [2018-06-25 08:34:53,545 INFO ]: Start minimizeSevpa. Operand 562 states. [2018-06-25 08:34:53,633 INFO ]: Finished minimizeSevpa. Reduced states from 562 to 562. [2018-06-25 08:34:53,633 INFO ]: Start removeUnreachable. Operand 562 states. [2018-06-25 08:34:53,649 INFO ]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1102 transitions. [2018-06-25 08:34:53,650 INFO ]: Start accepts. Automaton has 562 states and 1102 transitions. Word has length 10 [2018-06-25 08:34:53,650 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:34:53,650 INFO ]: Abstraction has 562 states and 1102 transitions. [2018-06-25 08:34:53,650 INFO ]: Interpolant automaton has 4 states. [2018-06-25 08:34:53,650 INFO ]: Start isEmpty. Operand 562 states and 1102 transitions. [2018-06-25 08:34:53,680 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-25 08:34:53,680 INFO ]: Found error trace [2018-06-25 08:34:53,680 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:34:53,680 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:34:53,680 INFO ]: Analyzing trace with hash -516224134, now seen corresponding path program 1 times [2018-06-25 08:34:53,680 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:34:53,680 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:34:53,682 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:34:53,682 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:34:53,682 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:34:53,741 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:34:53,984 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:34:53,984 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:34:53,984 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-25 08:34:53,984 INFO ]: Interpolant automaton has 7 states [2018-06-25 08:34:53,984 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-25 08:34:53,984 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-25 08:34:53,984 INFO ]: Start difference. First operand 562 states and 1102 transitions. Second operand 7 states. [2018-06-25 08:35:01,548 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:35:01,548 INFO ]: Finished difference Result 1404 states and 6735 transitions. [2018-06-25 08:35:01,548 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-25 08:35:01,548 INFO ]: Start accepts. Automaton has 7 states. Word has length 18 [2018-06-25 08:35:01,548 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:35:02,042 INFO ]: With dead ends: 1404 [2018-06-25 08:35:02,042 INFO ]: Without dead ends: 1392 [2018-06-25 08:35:02,043 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-06-25 08:35:02,044 INFO ]: Start minimizeSevpa. Operand 1392 states. [2018-06-25 08:35:02,627 INFO ]: Finished minimizeSevpa. Reduced states from 1392 to 1044. [2018-06-25 08:35:02,641 INFO ]: Start removeUnreachable. Operand 1044 states. [2018-06-25 08:35:02,704 INFO ]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 2649 transitions. [2018-06-25 08:35:02,704 INFO ]: Start accepts. Automaton has 1044 states and 2649 transitions. Word has length 18 [2018-06-25 08:35:02,705 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:35:02,705 INFO ]: Abstraction has 1044 states and 2649 transitions. [2018-06-25 08:35:02,705 INFO ]: Interpolant automaton has 7 states. [2018-06-25 08:35:02,706 INFO ]: Start isEmpty. Operand 1044 states and 2649 transitions. [2018-06-25 08:35:02,739 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-25 08:35:02,739 INFO ]: Found error trace [2018-06-25 08:35:02,739 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:35:02,739 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:35:02,740 INFO ]: Analyzing trace with hash -1201453677, now seen corresponding path program 1 times [2018-06-25 08:35:02,740 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:35:02,740 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:35:02,742 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:35:02,742 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:35:02,742 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:35:02,805 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:35:03,010 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:35:03,010 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:35:03,010 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-25 08:35:03,010 INFO ]: Interpolant automaton has 7 states [2018-06-25 08:35:03,010 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-25 08:35:03,010 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-25 08:35:03,010 INFO ]: Start difference. First operand 1044 states and 2649 transitions. Second operand 7 states. [2018-06-25 08:35:11,141 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:35:11,141 INFO ]: Finished difference Result 2824 states and 22063 transitions. [2018-06-25 08:35:11,142 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-25 08:35:11,142 INFO ]: Start accepts. Automaton has 7 states. Word has length 18 [2018-06-25 08:35:11,142 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:35:12,525 INFO ]: With dead ends: 2824 [2018-06-25 08:35:12,525 INFO ]: Without dead ends: 2800 [2018-06-25 08:35:12,526 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-06-25 08:35:12,527 INFO ]: Start minimizeSevpa. Operand 2800 states. [2018-06-25 08:35:14,981 INFO ]: Finished minimizeSevpa. Reduced states from 2800 to 2102. [2018-06-25 08:35:14,981 INFO ]: Start removeUnreachable. Operand 2102 states. [2018-06-25 08:35:15,201 INFO ]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 7521 transitions. [2018-06-25 08:35:15,201 INFO ]: Start accepts. Automaton has 2102 states and 7521 transitions. Word has length 18 [2018-06-25 08:35:15,201 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:35:15,201 INFO ]: Abstraction has 2102 states and 7521 transitions. [2018-06-25 08:35:15,201 INFO ]: Interpolant automaton has 7 states. [2018-06-25 08:35:15,201 INFO ]: Start isEmpty. Operand 2102 states and 7521 transitions. [2018-06-25 08:35:15,250 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-25 08:35:15,250 INFO ]: Found error trace [2018-06-25 08:35:15,250 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:35:15,250 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:35:15,251 INFO ]: Analyzing trace with hash -1160005322, now seen corresponding path program 1 times [2018-06-25 08:35:15,251 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:35:15,251 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:35:15,252 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:35:15,252 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:35:15,252 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:35:15,301 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:35:15,448 INFO ]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:35:15,448 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:35:15,448 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-25 08:35:15,448 INFO ]: Interpolant automaton has 8 states [2018-06-25 08:35:15,448 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 08:35:15,448 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-25 08:35:15,448 INFO ]: Start difference. First operand 2102 states and 7521 transitions. Second operand 8 states. [2018-06-25 08:35:29,102 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:35:29,102 INFO ]: Finished difference Result 5052 states and 49675 transitions. [2018-06-25 08:35:29,102 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-25 08:35:29,102 INFO ]: Start accepts. Automaton has 8 states. Word has length 19 [2018-06-25 08:35:29,102 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:35:33,298 INFO ]: With dead ends: 5052 [2018-06-25 08:35:33,298 INFO ]: Without dead ends: 5038 [2018-06-25 08:35:33,298 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2018-06-25 08:35:33,301 INFO ]: Start minimizeSevpa. Operand 5038 states. [2018-06-25 08:35:39,636 INFO ]: Finished minimizeSevpa. Reduced states from 5038 to 3106. [2018-06-25 08:35:39,636 INFO ]: Start removeUnreachable. Operand 3106 states. Received shutdown request... [2018-06-25 08:35:39,703 WARN ]: Verification canceled [2018-06-25 08:35:39,709 WARN ]: Timeout [2018-06-25 08:35:39,709 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 08:35:39 BoogieIcfgContainer [2018-06-25 08:35:39,709 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 08:35:39,711 INFO ]: Toolchain (without parser) took 55760.66 ms. Allocated memory was 308.8 MB in the beginning and 1.9 GB in the end (delta: 1.5 GB). Free memory was 217.5 MB in the beginning and 889.3 MB in the end (delta: -671.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-25 08:35:39,713 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 08:35:39,713 INFO ]: ChcToBoogie took 117.70 ms. Allocated memory is still 308.8 MB. Free memory was 217.5 MB in the beginning and 212.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:35:39,713 INFO ]: Boogie Preprocessor took 114.97 ms. Allocated memory is still 308.8 MB. Free memory was 212.5 MB in the beginning and 208.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:35:39,716 INFO ]: RCFGBuilder took 2566.07 ms. Allocated memory was 308.8 MB in the beginning and 353.4 MB in the end (delta: 44.6 MB). Free memory was 208.5 MB in the beginning and 317.2 MB in the end (delta: -108.7 MB). Peak memory consumption was 49.6 MB. Max. memory is 3.6 GB. [2018-06-25 08:35:39,717 INFO ]: TraceAbstraction took 52952.29 ms. Allocated memory was 353.4 MB in the beginning and 1.9 GB in the end (delta: 1.5 GB). Free memory was 317.2 MB in the beginning and 889.3 MB in the end (delta: -572.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 3.6 GB. [2018-06-25 08:35:39,728 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 117.70 ms. Allocated memory is still 308.8 MB. Free memory was 217.5 MB in the beginning and 212.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 114.97 ms. Allocated memory is still 308.8 MB. Free memory was 212.5 MB in the beginning and 208.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 2566.07 ms. Allocated memory was 308.8 MB in the beginning and 353.4 MB in the end (delta: 44.6 MB). Free memory was 208.5 MB in the beginning and 317.2 MB in the end (delta: -108.7 MB). Peak memory consumption was 49.6 MB. Max. memory is 3.6 GB. * TraceAbstraction took 52952.29 ms. Allocated memory was 353.4 MB in the beginning and 1.9 GB in the end (delta: 1.5 GB). Free memory was 317.2 MB in the beginning and 889.3 MB in the end (delta: -572.1 MB). Peak memory consumption was 1.5 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 ReachableStatesComputation was computing reachable states (2146 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 146 locations, 1 error locations. TIMEOUT Result, 52.9s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 40.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3243 SDtfs, 1327 SDslu, 6865 SDs, 0 SdLazy, 17768 SolverSat, 4656 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2102occurred in iteration=5, 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: 10.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 1046 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 2780 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 12/12 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.36.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_08-35-39-741.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/incremental.36.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_08-35-39-741.csv Completed graceful shutdown