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/fpice/inductive6-3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:12:00,482 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:12:00,492 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:12:00,503 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:12:00,504 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:12:00,505 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:12:00,506 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:12:00,509 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:12:00,510 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:12:00,511 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:12:00,513 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:12:00,513 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:12:00,514 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:12:00,515 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:12:00,515 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:12:00,518 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:12:00,519 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:12:00,528 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:12:00,532 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:12:00,532 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:12:00,533 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:12:00,535 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:12:00,535 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:12:00,540 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:12:00,540 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:12:00,541 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:12:00,542 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:12:00,542 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:12:00,543 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:12:00,543 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:12:00,546 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:12:00,547 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:12:00,547 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:12:00,548 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:12:00,548 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:12:00,548 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:12:00,569 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:12:00,570 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:12:00,570 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:12:00,570 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:12:00,571 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:12:00,571 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:12:00,572 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:12:00,572 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:12:00,572 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:12:00,572 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:12:00,572 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:12:00,572 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:12:00,573 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:12:00,575 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:12:00,575 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:12:00,576 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:12:00,576 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:12:00,576 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:12:00,576 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:12:00,576 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:12:00,577 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:12:00,578 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:12:00,578 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:12:00,624 INFO ]: Repository-Root is: /tmp [2018-06-24 21:12:00,641 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:12:00,647 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:12:00,648 INFO ]: Initializing SmtParser... [2018-06-24 21:12:00,648 INFO ]: SmtParser initialized [2018-06-24 21:12:00,649 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/fpice/inductive6-3.smt2 [2018-06-24 21:12:00,650 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 21:12:00,735 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/fpice/inductive6-3.smt2 unknown [2018-06-24 21:12:00,907 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/fpice/inductive6-3.smt2 [2018-06-24 21:12:00,922 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:12:00,930 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:12:00,931 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:12:00,931 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:12:00,931 INFO ]: ChcToBoogie initialized [2018-06-24 21:12:00,934 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:12:00" (1/1) ... [2018-06-24 21:12:00,987 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:00 Unit [2018-06-24 21:12:00,987 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:12:00,990 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:12:00,990 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:12:00,990 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:12:01,008 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:00" (1/1) ... [2018-06-24 21:12:01,008 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:00" (1/1) ... [2018-06-24 21:12:01,012 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:00" (1/1) ... [2018-06-24 21:12:01,012 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:00" (1/1) ... [2018-06-24 21:12:01,014 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:00" (1/1) ... [2018-06-24 21:12:01,016 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:00" (1/1) ... [2018-06-24 21:12:01,017 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:00" (1/1) ... [2018-06-24 21:12:01,018 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:12:01,019 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:12:01,019 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:12:01,019 INFO ]: RCFGBuilder initialized [2018-06-24 21:12:01,021 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:00" (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 21:12:01,033 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:12:01,033 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:12:01,033 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:12:01,033 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:12:01,033 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:12:01,034 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 21:12:01,220 INFO ]: Using library mode [2018-06-24 21:12:01,221 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:12:01 BoogieIcfgContainer [2018-06-24 21:12:01,221 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:12:01,221 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:12:01,221 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:12:01,224 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:12:01,224 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:12:01" (1/1) ... [2018-06-24 21:12:01,240 INFO ]: Initial Icfg 12 locations, 13 edges [2018-06-24 21:12:01,242 INFO ]: Using Remove infeasible edges [2018-06-24 21:12:01,242 INFO ]: Using Maximize final states [2018-06-24 21:12:01,243 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:12:01,243 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:12:01,247 INFO ]: Using Remove sink states [2018-06-24 21:12:01,248 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:12:01,248 INFO ]: Using Use SBE [2018-06-24 21:12:01,285 INFO ]: SBE split 2 edges [2018-06-24 21:12:01,291 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:12:01,294 INFO ]: 0 new accepting states [2018-06-24 21:12:01,478 INFO ]: Removed 15 edges and 4 locations by large block encoding [2018-06-24 21:12:01,480 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:12:01,481 INFO ]: Removed 2 edges and 0 locations because of local infeasibility [2018-06-24 21:12:01,482 INFO ]: 0 new accepting states [2018-06-24 21:12:01,482 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:12:01,482 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:12:01,482 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:12:01,482 INFO ]: 0 new accepting states [2018-06-24 21:12:01,482 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:12:01,483 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:12:01,484 INFO ]: Encoded RCFG 6 locations, 8 edges [2018-06-24 21:12:01,485 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:12:01 BasicIcfg [2018-06-24 21:12:01,485 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:12:01,486 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:12:01,486 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:12:01,489 INFO ]: TraceAbstraction initialized [2018-06-24 21:12:01,489 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:12:00" (1/4) ... [2018-06-24 21:12:01,489 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461519c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:12:01, skipping insertion in model container [2018-06-24 21:12:01,490 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:12:00" (2/4) ... [2018-06-24 21:12:01,490 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461519c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:12:01, skipping insertion in model container [2018-06-24 21:12:01,490 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:12:01" (3/4) ... [2018-06-24 21:12:01,490 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461519c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:12:01, skipping insertion in model container [2018-06-24 21:12:01,490 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:12:01" (4/4) ... [2018-06-24 21:12:01,491 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:12:01,500 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:12:01,508 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:12:01,546 INFO ]: Using default assertion order modulation [2018-06-24 21:12:01,546 INFO ]: Interprodecural is true [2018-06-24 21:12:01,546 INFO ]: Hoare is false [2018-06-24 21:12:01,547 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:12:01,547 INFO ]: Backedges is TWOTRACK [2018-06-24 21:12:01,547 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:12:01,547 INFO ]: Difference is false [2018-06-24 21:12:01,547 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:12:01,547 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:12:01,556 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 21:12:01,569 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:12:01,569 INFO ]: Found error trace [2018-06-24 21:12:01,570 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:12:01,570 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:12:01,575 INFO ]: Analyzing trace with hash 35685189, now seen corresponding path program 1 times [2018-06-24 21:12:01,577 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:12:01,578 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:12:01,616 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:12:01,616 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:12:01,616 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:12:01,654 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:12:01,715 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:12:01,717 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:12:01,717 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:12:01,719 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:12:01,729 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:12:01,730 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:12:01,732 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 21:12:01,806 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:12:01,807 INFO ]: Finished difference Result 6 states and 7 transitions. [2018-06-24 21:12:01,810 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:12:01,812 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:12:01,812 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:12:01,818 INFO ]: With dead ends: 6 [2018-06-24 21:12:01,818 INFO ]: Without dead ends: 6 [2018-06-24 21:12:01,820 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 21:12:01,833 INFO ]: Start minimizeSevpa. Operand 6 states. [2018-06-24 21:12:01,847 INFO ]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-06-24 21:12:01,848 INFO ]: Start removeUnreachable. Operand 6 states. [2018-06-24 21:12:01,849 INFO ]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2018-06-24 21:12:01,850 INFO ]: Start accepts. Automaton has 6 states and 7 transitions. Word has length 5 [2018-06-24 21:12:01,850 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:12:01,850 INFO ]: Abstraction has 6 states and 7 transitions. [2018-06-24 21:12:01,850 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:12:01,850 INFO ]: Start isEmpty. Operand 6 states and 7 transitions. [2018-06-24 21:12:01,850 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:12:01,850 INFO ]: Found error trace [2018-06-24 21:12:01,850 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:12:01,850 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:12:01,851 INFO ]: Analyzing trace with hash 35687111, now seen corresponding path program 1 times [2018-06-24 21:12:01,851 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:12:01,851 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:12:01,852 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:12:01,852 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:12:01,852 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:12:01,872 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:12:01,964 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:12:01,964 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:12:01,964 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:12:01,965 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:12:01,965 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:12:01,965 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:12:01,966 INFO ]: Start difference. First operand 6 states and 7 transitions. Second operand 3 states. [2018-06-24 21:12:02,039 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:12:02,039 INFO ]: Finished difference Result 7 states and 7 transitions. [2018-06-24 21:12:02,040 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:12:02,040 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:12:02,040 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:12:02,040 INFO ]: With dead ends: 7 [2018-06-24 21:12:02,040 INFO ]: Without dead ends: 6 [2018-06-24 21:12:02,041 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 21:12:02,041 INFO ]: Start minimizeSevpa. Operand 6 states. [2018-06-24 21:12:02,042 INFO ]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-06-24 21:12:02,042 INFO ]: Start removeUnreachable. Operand 6 states. [2018-06-24 21:12:02,042 INFO ]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-06-24 21:12:02,042 INFO ]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 5 [2018-06-24 21:12:02,042 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:12:02,042 INFO ]: Abstraction has 6 states and 6 transitions. [2018-06-24 21:12:02,042 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:12:02,042 INFO ]: Start isEmpty. Operand 6 states and 6 transitions. [2018-06-24 21:12:02,043 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:12:02,043 INFO ]: Found error trace [2018-06-24 21:12:02,043 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:12:02,043 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:12:02,043 INFO ]: Analyzing trace with hash 35746693, now seen corresponding path program 1 times [2018-06-24 21:12:02,043 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:12:02,043 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:12:02,045 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:12:02,045 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:12:02,045 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:12:02,058 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:12:02,136 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:12:02,136 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:12:02,136 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:12:02,136 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:12:02,136 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:12:02,136 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:12:02,136 INFO ]: Start difference. First operand 6 states and 6 transitions. Second operand 3 states. [2018-06-24 21:12:02,148 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:12:02,148 INFO ]: Finished difference Result 3 states and 2 transitions. [2018-06-24 21:12:02,148 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:12:02,149 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:12:02,149 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:12:02,149 INFO ]: With dead ends: 3 [2018-06-24 21:12:02,149 INFO ]: Without dead ends: 0 [2018-06-24 21:12:02,149 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 21:12:02,149 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:12:02,149 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:12:02,149 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:12:02,149 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:12:02,149 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2018-06-24 21:12:02,149 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:12:02,149 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:12:02,149 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:12:02,149 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:12:02,150 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:12:02,152 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:12:02,155 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:12:02 BasicIcfg [2018-06-24 21:12:02,155 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:12:02,156 INFO ]: Toolchain (without parser) took 1233.37 ms. Allocated memory is still 304.6 MB. Free memory was 261.0 MB in the beginning and 224.9 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:12:02,157 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:12:02,157 INFO ]: ChcToBoogie took 56.36 ms. Allocated memory is still 304.6 MB. Free memory was 261.0 MB in the beginning and 258.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:12:02,159 INFO ]: Boogie Preprocessor took 28.31 ms. Allocated memory is still 304.6 MB. Free memory was 258.0 MB in the beginning and 257.0 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. [2018-06-24 21:12:02,160 INFO ]: RCFGBuilder took 201.84 ms. Allocated memory is still 304.6 MB. Free memory was 257.0 MB in the beginning and 250.0 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:12:02,160 INFO ]: BlockEncodingV2 took 263.83 ms. Allocated memory is still 304.6 MB. Free memory was 250.0 MB in the beginning and 244.0 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:12:02,161 INFO ]: TraceAbstraction took 668.89 ms. Allocated memory is still 304.6 MB. Free memory was 244.0 MB in the beginning and 224.9 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:12:02,165 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 12 locations, 13 edges - StatisticsResult: Encoded RCFG 6 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 56.36 ms. Allocated memory is still 304.6 MB. Free memory was 261.0 MB in the beginning and 258.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 28.31 ms. Allocated memory is still 304.6 MB. Free memory was 258.0 MB in the beginning and 257.0 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. * RCFGBuilder took 201.84 ms. Allocated memory is still 304.6 MB. Free memory was 257.0 MB in the beginning and 250.0 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 263.83 ms. Allocated memory is still 304.6 MB. Free memory was 250.0 MB in the beginning and 244.0 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 668.89 ms. Allocated memory is still 304.6 MB. Free memory was 244.0 MB in the beginning and 224.9 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 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, 6 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 2 SDslu, 7 SDs, 0 SdLazy, 5 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 80 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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/inductive6-3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-12-02-177.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inductive6-3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-12-02-177.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inductive6-3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-12-02-177.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inductive6-3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-12-02-177.csv Received shutdown request...