java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/bcopy3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:39:55,578 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:39:55,582 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:39:55,598 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:39:55,598 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:39:55,599 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:39:55,603 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:39:55,609 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:39:55,612 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:39:55,613 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:39:55,614 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:39:55,614 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:39:55,615 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:39:55,619 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:39:55,620 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:39:55,621 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:39:55,630 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:39:55,632 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:39:55,633 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:39:55,634 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:39:55,638 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:39:55,640 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:39:55,640 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:39:55,640 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:39:55,642 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:39:55,643 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:39:55,643 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:39:55,644 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:39:55,645 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:39:55,648 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:39:55,648 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:39:55,649 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:39:55,649 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:39:55,650 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:39:55,651 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:39:55,652 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:39:55,673 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:39:55,674 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:39:55,674 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:39:55,674 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:39:55,676 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:39:55,676 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:39:55,676 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:39:55,677 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:39:55,677 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:39:55,677 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:39:55,677 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:39:55,677 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:39:55,678 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:39:55,678 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:39:55,678 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:39:55,678 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:39:55,678 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:39:55,682 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:39:55,683 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:39:55,735 INFO ]: Repository-Root is: /tmp [2018-06-22 01:39:55,752 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:39:55,759 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:39:55,761 INFO ]: Initializing SmtParser... [2018-06-22 01:39:55,761 INFO ]: SmtParser initialized [2018-06-22 01:39:55,762 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/bcopy3.smt2 [2018-06-22 01:39:55,763 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 01:39:55,865 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/bcopy3.smt2 unknown [2018-06-22 01:39:56,160 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/bcopy3.smt2 [2018-06-22 01:39:56,165 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:39:56,180 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:39:56,180 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:39:56,181 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:39:56,181 INFO ]: ChcToBoogie initialized [2018-06-22 01:39:56,194 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:39:56" (1/1) ... [2018-06-22 01:39:56,267 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:56 Unit [2018-06-22 01:39:56,267 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:39:56,268 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:39:56,268 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:39:56,268 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:39:56,291 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:56" (1/1) ... [2018-06-22 01:39:56,291 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:56" (1/1) ... [2018-06-22 01:39:56,297 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:56" (1/1) ... [2018-06-22 01:39:56,297 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:56" (1/1) ... [2018-06-22 01:39:56,305 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:56" (1/1) ... [2018-06-22 01:39:56,310 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:56" (1/1) ... [2018-06-22 01:39:56,312 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:56" (1/1) ... [2018-06-22 01:39:56,314 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:39:56,314 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:39:56,314 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:39:56,314 INFO ]: RCFGBuilder initialized [2018-06-22 01:39:56,315 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:56" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 01:39:56,326 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:39:56,327 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:39:56,327 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:39:56,327 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:39:56,327 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:39:56,327 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:39:56,713 INFO ]: Using library mode [2018-06-22 01:39:56,713 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:39:56 BoogieIcfgContainer [2018-06-22 01:39:56,714 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:39:56,715 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:39:56,715 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:39:56,718 INFO ]: TraceAbstraction initialized [2018-06-22 01:39:56,719 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:39:56" (1/3) ... [2018-06-22 01:39:56,720 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512d7266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:39:56, skipping insertion in model container [2018-06-22 01:39:56,720 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:39:56" (2/3) ... [2018-06-22 01:39:56,720 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512d7266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:39:56, skipping insertion in model container [2018-06-22 01:39:56,720 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:39:56" (3/3) ... [2018-06-22 01:39:56,722 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:39:56,732 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:39:56,742 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:39:56,808 INFO ]: Using default assertion order modulation [2018-06-22 01:39:56,808 INFO ]: Interprodecural is true [2018-06-22 01:39:56,808 INFO ]: Hoare is false [2018-06-22 01:39:56,808 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:39:56,808 INFO ]: Backedges is TWOTRACK [2018-06-22 01:39:56,808 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:39:56,809 INFO ]: Difference is false [2018-06-22 01:39:56,809 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:39:56,809 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:39:56,828 INFO ]: Start isEmpty. Operand 27 states. [2018-06-22 01:39:56,843 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:39:56,843 INFO ]: Found error trace [2018-06-22 01:39:56,844 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:39:56,844 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:39:56,849 INFO ]: Analyzing trace with hash -1967235830, now seen corresponding path program 1 times [2018-06-22 01:39:56,852 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:39:56,852 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:39:56,899 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:56,900 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:56,900 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:56,932 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:57,018 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:39:57,021 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:39:57,021 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:39:57,023 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:39:57,035 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:39:57,036 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:39:57,039 INFO ]: Start difference. First operand 27 states. Second operand 4 states. [2018-06-22 01:39:57,452 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:39:57,452 INFO ]: Finished difference Result 47 states and 61 transitions. [2018-06-22 01:39:57,454 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:39:57,455 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 01:39:57,456 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:39:57,469 INFO ]: With dead ends: 47 [2018-06-22 01:39:57,469 INFO ]: Without dead ends: 35 [2018-06-22 01:39:57,472 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:39:57,497 INFO ]: Start minimizeSevpa. Operand 35 states. [2018-06-22 01:39:57,531 INFO ]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-06-22 01:39:57,532 INFO ]: Start removeUnreachable. Operand 35 states. [2018-06-22 01:39:57,534 INFO ]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2018-06-22 01:39:57,535 INFO ]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 8 [2018-06-22 01:39:57,536 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:39:57,536 INFO ]: Abstraction has 35 states and 45 transitions. [2018-06-22 01:39:57,536 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:39:57,536 INFO ]: Start isEmpty. Operand 35 states and 45 transitions. [2018-06-22 01:39:57,537 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:39:57,537 INFO ]: Found error trace [2018-06-22 01:39:57,537 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:39:57,538 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:39:57,538 INFO ]: Analyzing trace with hash -1972776956, now seen corresponding path program 1 times [2018-06-22 01:39:57,538 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:39:57,538 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:39:57,539 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:57,539 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:57,539 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:57,543 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:57,571 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:39:57,571 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:39:57,571 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:39:57,573 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:39:57,573 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:39:57,573 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:39:57,574 INFO ]: Start difference. First operand 35 states and 45 transitions. Second operand 4 states. [2018-06-22 01:39:57,803 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:39:57,803 INFO ]: Finished difference Result 51 states and 66 transitions. [2018-06-22 01:39:57,805 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:39:57,805 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 01:39:57,805 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:39:57,808 INFO ]: With dead ends: 51 [2018-06-22 01:39:57,808 INFO ]: Without dead ends: 51 [2018-06-22 01:39:57,809 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:39:57,813 INFO ]: Start minimizeSevpa. Operand 51 states. [2018-06-22 01:39:57,825 INFO ]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-06-22 01:39:57,825 INFO ]: Start removeUnreachable. Operand 51 states. [2018-06-22 01:39:57,827 INFO ]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2018-06-22 01:39:57,827 INFO ]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 8 [2018-06-22 01:39:57,827 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:39:57,827 INFO ]: Abstraction has 51 states and 66 transitions. [2018-06-22 01:39:57,827 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:39:57,827 INFO ]: Start isEmpty. Operand 51 states and 66 transitions. [2018-06-22 01:39:57,834 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 01:39:57,834 INFO ]: Found error trace [2018-06-22 01:39:57,834 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:39:57,834 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:39:57,834 INFO ]: Analyzing trace with hash -1838990919, now seen corresponding path program 1 times [2018-06-22 01:39:57,834 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:39:57,834 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:39:57,835 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:57,835 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:57,835 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:57,864 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:57,950 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:39:57,950 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:39:57,951 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 01:39:57,951 INFO ]: Interpolant automaton has 5 states [2018-06-22 01:39:57,951 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 01:39:57,951 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:39:57,951 INFO ]: Start difference. First operand 51 states and 66 transitions. Second operand 5 states. [2018-06-22 01:39:58,121 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:39:58,122 INFO ]: Finished difference Result 84 states and 105 transitions. [2018-06-22 01:39:58,122 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 01:39:58,122 INFO ]: Start accepts. Automaton has 5 states. Word has length 12 [2018-06-22 01:39:58,122 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:39:58,125 INFO ]: With dead ends: 84 [2018-06-22 01:39:58,125 INFO ]: Without dead ends: 84 [2018-06-22 01:39:58,126 INFO ]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-22 01:39:58,126 INFO ]: Start minimizeSevpa. Operand 84 states. [2018-06-22 01:39:58,152 INFO ]: Finished minimizeSevpa. Reduced states from 84 to 60. [2018-06-22 01:39:58,152 INFO ]: Start removeUnreachable. Operand 60 states. [2018-06-22 01:39:58,153 INFO ]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2018-06-22 01:39:58,154 INFO ]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 12 [2018-06-22 01:39:58,154 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:39:58,154 INFO ]: Abstraction has 60 states and 75 transitions. [2018-06-22 01:39:58,154 INFO ]: Interpolant automaton has 5 states. [2018-06-22 01:39:58,154 INFO ]: Start isEmpty. Operand 60 states and 75 transitions. [2018-06-22 01:39:58,156 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 01:39:58,156 INFO ]: Found error trace [2018-06-22 01:39:58,156 INFO ]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:39:58,156 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:39:58,157 INFO ]: Analyzing trace with hash 885803254, now seen corresponding path program 1 times [2018-06-22 01:39:58,157 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:39:58,157 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:39:58,158 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:58,158 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:58,158 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:58,169 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:58,229 INFO ]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 01:39:58,229 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:39:58,229 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:39:58,247 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:58,288 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:58,294 INFO ]: Computing forward predicates... [2018-06-22 01:39:58,314 INFO ]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 01:39:58,351 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:39:58,351 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 01:39:58,351 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:39:58,352 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:39:58,352 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:39:58,352 INFO ]: Start difference. First operand 60 states and 75 transitions. Second operand 4 states. [2018-06-22 01:39:58,696 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:39:58,696 INFO ]: Finished difference Result 71 states and 88 transitions. [2018-06-22 01:39:58,698 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:39:58,699 INFO ]: Start accepts. Automaton has 4 states. Word has length 21 [2018-06-22 01:39:58,699 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:39:58,700 INFO ]: With dead ends: 71 [2018-06-22 01:39:58,700 INFO ]: Without dead ends: 60 [2018-06-22 01:39:58,701 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:39:58,701 INFO ]: Start minimizeSevpa. Operand 60 states. [2018-06-22 01:39:58,712 INFO ]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-06-22 01:39:58,712 INFO ]: Start removeUnreachable. Operand 60 states. [2018-06-22 01:39:58,713 INFO ]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2018-06-22 01:39:58,713 INFO ]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 21 [2018-06-22 01:39:58,714 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:39:58,714 INFO ]: Abstraction has 60 states and 74 transitions. [2018-06-22 01:39:58,714 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:39:58,714 INFO ]: Start isEmpty. Operand 60 states and 74 transitions. [2018-06-22 01:39:58,716 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 01:39:58,716 INFO ]: Found error trace [2018-06-22 01:39:58,716 INFO ]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:39:58,716 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:39:58,716 INFO ]: Analyzing trace with hash 1042730591, now seen corresponding path program 1 times [2018-06-22 01:39:58,716 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:39:58,716 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:39:58,720 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:58,720 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:39:58,720 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:39:58,782 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:59,548 INFO ]: Checked inductivity of 23 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 01:39:59,549 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:39:59,549 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 01:39:59,568 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:39:59,626 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:39:59,631 INFO ]: Computing forward predicates... [2018-06-22 01:39:59,874 INFO ]: Checked inductivity of 23 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 01:39:59,906 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:39:59,906 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2018-06-22 01:39:59,906 INFO ]: Interpolant automaton has 10 states [2018-06-22 01:39:59,906 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 01:39:59,906 INFO ]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-06-22 01:39:59,906 INFO ]: Start difference. First operand 60 states and 74 transitions. Second operand 10 states. [2018-06-22 01:40:01,052 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:40:01,052 INFO ]: Finished difference Result 114 states and 156 transitions. [2018-06-22 01:40:01,052 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-22 01:40:01,052 INFO ]: Start accepts. Automaton has 10 states. Word has length 33 [2018-06-22 01:40:01,053 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:40:01,053 INFO ]: With dead ends: 114 [2018-06-22 01:40:01,053 INFO ]: Without dead ends: 0 [2018-06-22 01:40:01,053 INFO ]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2018-06-22 01:40:01,053 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:40:01,053 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:40:01,053 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:40:01,053 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:40:01,053 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-06-22 01:40:01,053 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:40:01,053 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:40:01,053 INFO ]: Interpolant automaton has 10 states. [2018-06-22 01:40:01,053 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:40:01,053 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:40:01,058 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:40:01 BoogieIcfgContainer [2018-06-22 01:40:01,058 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:40:01,059 INFO ]: Toolchain (without parser) took 4893.49 ms. Allocated memory was 307.8 MB in the beginning and 326.1 MB in the end (delta: 18.4 MB). Free memory was 260.2 MB in the beginning and 175.1 MB in the end (delta: 85.0 MB). Peak memory consumption was 103.4 MB. Max. memory is 3.6 GB. [2018-06-22 01:40:01,061 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 307.8 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:40:01,061 INFO ]: ChcToBoogie took 86.77 ms. Allocated memory is still 307.8 MB. Free memory was 258.2 MB in the beginning and 256.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:40:01,062 INFO ]: Boogie Preprocessor took 45.81 ms. Allocated memory is still 307.8 MB. Free memory is still 256.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:40:01,062 INFO ]: RCFGBuilder took 399.39 ms. Allocated memory is still 307.8 MB. Free memory was 256.2 MB in the beginning and 242.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:40:01,063 INFO ]: TraceAbstraction took 4342.68 ms. Allocated memory was 307.8 MB in the beginning and 326.1 MB in the end (delta: 18.4 MB). Free memory was 242.2 MB in the beginning and 175.1 MB in the end (delta: 67.0 MB). Peak memory consumption was 85.4 MB. Max. memory is 3.6 GB. [2018-06-22 01:40:01,074 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 307.8 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 86.77 ms. Allocated memory is still 307.8 MB. Free memory was 258.2 MB in the beginning and 256.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 45.81 ms. Allocated memory is still 307.8 MB. Free memory is still 256.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 399.39 ms. Allocated memory is still 307.8 MB. Free memory was 256.2 MB in the beginning and 242.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4342.68 ms. Allocated memory was 307.8 MB in the beginning and 326.1 MB in the end (delta: 18.4 MB). Free memory was 242.2 MB in the beginning and 175.1 MB in the end (delta: 67.0 MB). Peak memory consumption was 85.4 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. SAFE Result, 4.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 2.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 140 SDtfs, 180 SDslu, 292 SDs, 0 SdLazy, 343 SolverSat, 71 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 6722 SizeOfPredicates, 8 NumberOfNonLiveVariables, 251 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 52/58 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bcopy3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-40-01-087.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bcopy3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-40-01-087.csv Received shutdown request...