java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.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/repeat.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:23:47,588 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:23:47,590 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:23:47,605 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:23:47,606 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:23:47,606 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:23:47,608 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:23:47,609 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:23:47,611 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:23:47,612 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:23:47,613 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:23:47,613 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:23:47,614 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:23:47,615 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:23:47,616 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:23:47,616 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:23:47,618 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:23:47,620 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:23:47,621 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:23:47,622 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:23:47,623 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:23:47,626 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-24 21:23:47,631 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:23:47,631 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:23:47,632 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:23:47,632 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:23:47,633 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:23:47,634 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:23:47,634 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:23:47,648 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:23:47,648 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:23:47,649 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:23:47,649 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:23:47,650 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:23:47,650 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:23:47,650 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:23:47,650 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:23:47,651 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:23:47,651 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:23:47,651 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:23:47,651 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:23:47,652 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:23:47,652 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:23:47,652 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:23:47,652 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:23:47,652 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:23:47,653 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:23:47,653 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:23:47,653 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:23:47,653 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:23:47,654 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:23:47,655 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:23:47,699 INFO ]: Repository-Root is: /tmp [2018-06-24 21:23:47,712 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:23:47,715 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:23:47,717 INFO ]: Initializing SmtParser... [2018-06-24 21:23:47,717 INFO ]: SmtParser initialized [2018-06-24 21:23:47,717 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/repeat.smt2 [2018-06-24 21:23:47,724 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 [2018-06-24 21:23:47,811 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/repeat.smt2 unknown [2018-06-24 21:23:47,995 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/repeat.smt2 [2018-06-24 21:23:48,000 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:23:48,007 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:23:48,007 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:23:48,007 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:23:48,007 INFO ]: ChcToBoogie initialized [2018-06-24 21:23:48,011 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:23:47" (1/1) ... [2018-06-24 21:23:48,061 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:48 Unit [2018-06-24 21:23:48,062 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:23:48,062 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:23:48,062 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:23:48,062 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:23:48,083 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:48" (1/1) ... [2018-06-24 21:23:48,083 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:48" (1/1) ... [2018-06-24 21:23:48,088 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:48" (1/1) ... [2018-06-24 21:23:48,088 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:48" (1/1) ... [2018-06-24 21:23:48,091 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:48" (1/1) ... [2018-06-24 21:23:48,092 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:48" (1/1) ... [2018-06-24 21:23:48,094 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:48" (1/1) ... [2018-06-24 21:23:48,095 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:23:48,095 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:23:48,095 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:23:48,095 INFO ]: RCFGBuilder initialized [2018-06-24 21:23:48,096 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:48" (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) [2018-06-24 21:23:48,114 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:23:48,114 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:23:48,114 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:23:48,114 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:23:48,114 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:23:48,114 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 [2018-06-24 21:23:48,280 INFO ]: Using library mode [2018-06-24 21:23:48,281 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:23:48 BoogieIcfgContainer [2018-06-24 21:23:48,281 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:23:48,281 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:23:48,281 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:23:48,290 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:23:48,290 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:23:48" (1/1) ... [2018-06-24 21:23:48,306 INFO ]: Initial Icfg 15 locations, 18 edges [2018-06-24 21:23:48,307 INFO ]: Using Remove infeasible edges [2018-06-24 21:23:48,307 INFO ]: Using Maximize final states [2018-06-24 21:23:48,309 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:23:48,310 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:23:48,311 INFO ]: Using Remove sink states [2018-06-24 21:23:48,312 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:23:48,312 INFO ]: Using Use SBE [2018-06-24 21:23:48,323 INFO ]: SBE split 0 edges [2018-06-24 21:23:48,328 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:23:48,329 INFO ]: 0 new accepting states [2018-06-24 21:23:48,459 INFO ]: Removed 17 edges and 6 locations by large block encoding [2018-06-24 21:23:48,461 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:23:48,462 INFO ]: Removed 1 edges and 0 locations because of local infeasibility [2018-06-24 21:23:48,463 INFO ]: 0 new accepting states [2018-06-24 21:23:48,463 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:23:48,463 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:23:48,463 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:23:48,463 INFO ]: 0 new accepting states [2018-06-24 21:23:48,464 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:23:48,464 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:23:48,464 INFO ]: Encoded RCFG 7 locations, 9 edges [2018-06-24 21:23:48,464 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:23:48 BasicIcfg [2018-06-24 21:23:48,464 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:23:48,465 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:23:48,465 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:23:48,470 INFO ]: TraceAbstraction initialized [2018-06-24 21:23:48,470 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:23:47" (1/4) ... [2018-06-24 21:23:48,471 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441c1fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:23:48, skipping insertion in model container [2018-06-24 21:23:48,471 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:48" (2/4) ... [2018-06-24 21:23:48,472 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441c1fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:23:48, skipping insertion in model container [2018-06-24 21:23:48,472 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:23:48" (3/4) ... [2018-06-24 21:23:48,472 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441c1fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:23:48, skipping insertion in model container [2018-06-24 21:23:48,472 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:23:48" (4/4) ... [2018-06-24 21:23:48,475 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:23:48,486 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:23:48,502 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:23:48,549 INFO ]: Using default assertion order modulation [2018-06-24 21:23:48,549 INFO ]: Interprodecural is true [2018-06-24 21:23:48,549 INFO ]: Hoare is false [2018-06-24 21:23:48,549 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:23:48,549 INFO ]: Backedges is TWOTRACK [2018-06-24 21:23:48,549 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:23:48,549 INFO ]: Difference is false [2018-06-24 21:23:48,549 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:23:48,549 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:23:48,559 INFO ]: Start isEmpty. Operand 7 states. [2018-06-24 21:23:48,568 INFO ]: Finished isEmpty. Found accepting run of length 5 [2018-06-24 21:23:48,568 INFO ]: Found error trace [2018-06-24 21:23:48,569 INFO ]: trace histogram [1, 1, 1, 1] [2018-06-24 21:23:48,569 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:48,574 INFO ]: Analyzing trace with hash 1100885, now seen corresponding path program 1 times [2018-06-24 21:23:48,576 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:48,577 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:48,609 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:48,609 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:48,609 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:48,636 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:48,680 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:23:48,682 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:23:48,682 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:23:48,683 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:23:48,694 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:23:48,694 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:23:48,697 INFO ]: Start difference. First operand 7 states. Second operand 3 states. [2018-06-24 21:23:48,783 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:48,783 INFO ]: Finished difference Result 11 states and 15 transitions. [2018-06-24 21:23:48,784 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:23:48,785 INFO ]: Start accepts. Automaton has 3 states. Word has length 4 [2018-06-24 21:23:48,786 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:48,792 INFO ]: With dead ends: 11 [2018-06-24 21:23:48,792 INFO ]: Without dead ends: 11 [2018-06-24 21:23:48,794 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:23:48,806 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-24 21:23:48,823 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-24 21:23:48,824 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-24 21:23:48,825 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2018-06-24 21:23:48,826 INFO ]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 4 [2018-06-24 21:23:48,827 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:48,827 INFO ]: Abstraction has 11 states and 15 transitions. [2018-06-24 21:23:48,827 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:23:48,827 INFO ]: Start isEmpty. Operand 11 states and 15 transitions. [2018-06-24 21:23:48,828 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-24 21:23:48,828 INFO ]: Found error trace [2018-06-24 21:23:48,828 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:23:48,828 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:48,828 INFO ]: Analyzing trace with hash -1515879603, now seen corresponding path program 1 times [2018-06-24 21:23:48,828 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:48,828 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:48,829 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:48,829 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:48,829 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:48,854 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:48,982 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:23:48,982 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:23:48,983 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-24 21:23:48,984 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:23:48,984 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:23:48,984 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:23:48,984 INFO ]: Start difference. First operand 11 states and 15 transitions. Second operand 5 states. [2018-06-24 21:23:49,170 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:49,170 INFO ]: Finished difference Result 18 states and 29 transitions. [2018-06-24 21:23:49,171 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-24 21:23:49,171 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-24 21:23:49,171 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:49,173 INFO ]: With dead ends: 18 [2018-06-24 21:23:49,173 INFO ]: Without dead ends: 18 [2018-06-24 21:23:49,173 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-24 21:23:49,173 INFO ]: Start minimizeSevpa. Operand 18 states. [2018-06-24 21:23:49,179 INFO ]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-06-24 21:23:49,179 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-24 21:23:49,180 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 25 transitions. [2018-06-24 21:23:49,180 INFO ]: Start accepts. Automaton has 16 states and 25 transitions. Word has length 8 [2018-06-24 21:23:49,181 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:49,181 INFO ]: Abstraction has 16 states and 25 transitions. [2018-06-24 21:23:49,181 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:23:49,181 INFO ]: Start isEmpty. Operand 16 states and 25 transitions. [2018-06-24 21:23:49,181 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-24 21:23:49,181 INFO ]: Found error trace [2018-06-24 21:23:49,181 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-06-24 21:23:49,181 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:49,181 INFO ]: Analyzing trace with hash 1939209797, now seen corresponding path program 1 times [2018-06-24 21:23:49,181 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:49,181 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:49,182 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:49,182 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:49,182 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:49,215 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:49,385 INFO ]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-24 21:23:49,385 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:49,385 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 [2018-06-24 21:23:49,393 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:49,443 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:49,452 INFO ]: Computing forward predicates... [2018-06-24 21:23:49,876 INFO ]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-24 21:23:49,896 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:23:49,896 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2018-06-24 21:23:49,897 INFO ]: Interpolant automaton has 8 states [2018-06-24 21:23:49,897 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 21:23:49,897 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:23:49,897 INFO ]: Start difference. First operand 16 states and 25 transitions. Second operand 8 states. [2018-06-24 21:23:49,943 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:49,943 INFO ]: Finished difference Result 12 states and 17 transitions. [2018-06-24 21:23:49,943 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 21:23:49,944 INFO ]: Start accepts. Automaton has 8 states. Word has length 12 [2018-06-24 21:23:49,944 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:49,944 INFO ]: With dead ends: 12 [2018-06-24 21:23:49,944 INFO ]: Without dead ends: 0 [2018-06-24 21:23:49,944 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-06-24 21:23:49,944 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:23:49,944 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:23:49,944 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:23:49,944 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:23:49,945 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-06-24 21:23:49,945 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:49,945 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:23:49,945 INFO ]: Interpolant automaton has 8 states. [2018-06-24 21:23:49,945 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:23:49,945 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:23:49,947 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:23:49,948 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:23:49 BasicIcfg [2018-06-24 21:23:49,948 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:23:49,949 INFO ]: Toolchain (without parser) took 1948.34 ms. Allocated memory is still 305.7 MB. Free memory was 262.0 MB in the beginning and 195.3 MB in the end (delta: 66.7 MB). Peak memory consumption was 66.7 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:49,950 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 305.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:23:49,951 INFO ]: ChcToBoogie took 54.55 ms. Allocated memory is still 305.7 MB. Free memory was 262.0 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:49,951 INFO ]: Boogie Preprocessor took 32.72 ms. Allocated memory is still 305.7 MB. Free memory was 260.1 MB in the beginning and 258.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:49,952 INFO ]: RCFGBuilder took 185.51 ms. Allocated memory is still 305.7 MB. Free memory was 258.1 MB in the beginning and 250.9 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:49,952 INFO ]: BlockEncodingV2 took 183.13 ms. Allocated memory is still 305.7 MB. Free memory was 250.9 MB in the beginning and 245.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:49,953 INFO ]: TraceAbstraction took 1482.95 ms. Allocated memory is still 305.7 MB. Free memory was 245.9 MB in the beginning and 195.3 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:49,962 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 15 locations, 18 edges - StatisticsResult: Encoded RCFG 7 locations, 9 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 305.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 54.55 ms. Allocated memory is still 305.7 MB. Free memory was 262.0 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 32.72 ms. Allocated memory is still 305.7 MB. Free memory was 260.1 MB in the beginning and 258.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 185.51 ms. Allocated memory is still 305.7 MB. Free memory was 258.1 MB in the beginning and 250.9 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 183.13 ms. Allocated memory is still 305.7 MB. Free memory was 250.9 MB in the beginning and 245.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1482.95 ms. Allocated memory is still 305.7 MB. Free memory was 245.9 MB in the beginning and 195.3 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 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, 7 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 3 SDslu, 35 SDs, 0 SdLazy, 35 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1395 SizeOfPredicates, 18 NumberOfNonLiveVariables, 112 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 17/18 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/repeat.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-23-49-979.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/repeat.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-23-49-979.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/repeat.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-23-49-979.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/repeat.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-23-49-979.csv Received shutdown request...