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/inductive.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:14:59,816 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:14:59,818 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:14:59,828 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:14:59,829 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:14:59,829 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:14:59,831 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:14:59,833 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:14:59,834 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:14:59,835 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:14:59,835 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:14:59,836 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:14:59,836 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:14:59,837 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:14:59,838 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:14:59,839 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:14:59,839 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:14:59,841 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:14:59,843 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:14:59,844 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:14:59,845 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:14:59,846 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:14:59,848 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:14:59,849 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:14:59,849 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:14:59,850 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:14:59,850 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:14:59,851 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:14:59,852 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:14:59,853 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:14:59,853 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:14:59,853 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:14:59,854 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:14:59,854 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:14:59,855 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:14:59,855 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:14:59,856 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:14:59,869 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:14:59,869 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:14:59,870 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:14:59,870 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:14:59,871 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:14:59,871 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:14:59,871 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:14:59,871 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:14:59,872 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:14:59,872 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:14:59,872 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:14:59,872 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:14:59,872 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:14:59,873 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:14:59,873 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:14:59,873 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:14:59,873 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:14:59,873 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:14:59,873 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:14:59,874 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:14:59,874 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:14:59,875 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:14:59,875 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:14:59,921 INFO ]: Repository-Root is: /tmp [2018-06-26 18:14:59,931 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:14:59,934 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:14:59,936 INFO ]: Initializing SmtParser... [2018-06-26 18:14:59,936 INFO ]: SmtParser initialized [2018-06-26 18:14:59,937 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/fpice/inductive.smt2 [2018-06-26 18:14:59,938 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 [2018-06-26 18:15:00,024 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/fpice/inductive.smt2 unknown [2018-06-26 18:15:00,215 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/fpice/inductive.smt2 [2018-06-26 18:15:00,226 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:15:00,232 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:15:00,232 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:15:00,232 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:15:00,232 INFO ]: ChcToBoogie initialized [2018-06-26 18:15:00,236 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:15:00" (1/1) ... [2018-06-26 18:15:00,286 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:00 Unit [2018-06-26 18:15:00,286 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:15:00,287 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:15:00,287 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:15:00,287 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:15:00,307 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:00" (1/1) ... [2018-06-26 18:15:00,308 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:00" (1/1) ... [2018-06-26 18:15:00,313 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:00" (1/1) ... [2018-06-26 18:15:00,313 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:00" (1/1) ... [2018-06-26 18:15:00,316 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:00" (1/1) ... [2018-06-26 18:15:00,319 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:00" (1/1) ... [2018-06-26 18:15:00,320 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:00" (1/1) ... [2018-06-26 18:15:00,321 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:15:00,323 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:15:00,323 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:15:00,323 INFO ]: RCFGBuilder initialized [2018-06-26 18:15:00,324 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:00" (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) [2018-06-26 18:15:00,337 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:15:00,337 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:15:00,337 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:15:00,337 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:15:00,337 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:15:00,337 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 [2018-06-26 18:15:00,528 INFO ]: Using library mode [2018-06-26 18:15:00,528 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:15:00 BoogieIcfgContainer [2018-06-26 18:15:00,528 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:15:00,529 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:15:00,529 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:15:00,531 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:15:00,531 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:15:00" (1/1) ... [2018-06-26 18:15:00,549 INFO ]: Initial Icfg 13 locations, 19 edges [2018-06-26 18:15:00,550 INFO ]: Using Remove infeasible edges [2018-06-26 18:15:00,551 INFO ]: Using Maximize final states [2018-06-26 18:15:00,551 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:15:00,551 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:15:00,556 INFO ]: Using Remove sink states [2018-06-26 18:15:00,557 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:15:00,557 INFO ]: Using Use SBE [2018-06-26 18:15:00,570 INFO ]: SBE split 0 edges [2018-06-26 18:15:00,576 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-26 18:15:00,577 INFO ]: 0 new accepting states [2018-06-26 18:15:00,655 INFO ]: Removed 8 edges and 3 locations by large block encoding [2018-06-26 18:15:00,657 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:15:00,658 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:15:00,658 INFO ]: 0 new accepting states [2018-06-26 18:15:00,658 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:15:00,658 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:15:00,659 INFO ]: Encoded RCFG 8 locations, 13 edges [2018-06-26 18:15:00,659 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:15:00 BasicIcfg [2018-06-26 18:15:00,659 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:15:00,660 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:15:00,660 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:15:00,671 INFO ]: TraceAbstraction initialized [2018-06-26 18:15:00,671 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:15:00" (1/4) ... [2018-06-26 18:15:00,672 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516c4385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:15:00, skipping insertion in model container [2018-06-26 18:15:00,672 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:00" (2/4) ... [2018-06-26 18:15:00,672 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516c4385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:15:00, skipping insertion in model container [2018-06-26 18:15:00,672 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:15:00" (3/4) ... [2018-06-26 18:15:00,672 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516c4385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:15:00, skipping insertion in model container [2018-06-26 18:15:00,672 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:15:00" (4/4) ... [2018-06-26 18:15:00,675 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:15:00,685 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:15:00,702 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:15:00,746 INFO ]: Using default assertion order modulation [2018-06-26 18:15:00,747 INFO ]: Interprodecural is true [2018-06-26 18:15:00,747 INFO ]: Hoare is false [2018-06-26 18:15:00,747 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:15:00,747 INFO ]: Backedges is TWOTRACK [2018-06-26 18:15:00,747 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:15:00,747 INFO ]: Difference is false [2018-06-26 18:15:00,747 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:15:00,747 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:15:00,758 INFO ]: Start isEmpty. Operand 8 states. [2018-06-26 18:15:00,767 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:15:00,767 INFO ]: Found error trace [2018-06-26 18:15:00,768 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:15:00,768 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:00,773 INFO ]: Analyzing trace with hash 32941699, now seen corresponding path program 1 times [2018-06-26 18:15:00,775 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:00,775 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:00,807 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:00,807 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:00,807 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:00,841 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:00,904 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:15:00,906 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:15:00,906 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:15:00,907 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:15:00,919 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:15:00,920 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:15:00,922 INFO ]: Start difference. First operand 8 states. Second operand 3 states. [2018-06-26 18:15:01,025 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:01,025 INFO ]: Finished difference Result 13 states and 23 transitions. [2018-06-26 18:15:01,026 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:15:01,026 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:15:01,027 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:01,034 INFO ]: With dead ends: 13 [2018-06-26 18:15:01,034 INFO ]: Without dead ends: 13 [2018-06-26 18:15:01,036 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 [2018-06-26 18:15:01,049 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-26 18:15:01,085 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-26 18:15:01,086 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-26 18:15:01,087 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 23 transitions. [2018-06-26 18:15:01,088 INFO ]: Start accepts. Automaton has 13 states and 23 transitions. Word has length 5 [2018-06-26 18:15:01,090 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:01,090 INFO ]: Abstraction has 13 states and 23 transitions. [2018-06-26 18:15:01,090 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:15:01,090 INFO ]: Start isEmpty. Operand 13 states and 23 transitions. [2018-06-26 18:15:01,091 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:15:01,091 INFO ]: Found error trace [2018-06-26 18:15:01,091 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:15:01,091 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:01,094 INFO ]: Analyzing trace with hash 32971490, now seen corresponding path program 1 times [2018-06-26 18:15:01,094 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:01,094 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:01,095 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:01,095 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:01,095 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:01,103 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:01,173 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:15:01,173 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:15:01,173 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:15:01,174 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:15:01,174 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:15:01,174 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:15:01,175 INFO ]: Start difference. First operand 13 states and 23 transitions. Second operand 3 states. [2018-06-26 18:15:01,359 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:01,359 INFO ]: Finished difference Result 15 states and 29 transitions. [2018-06-26 18:15:01,360 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:15:01,361 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:15:01,361 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:01,361 INFO ]: With dead ends: 15 [2018-06-26 18:15:01,361 INFO ]: Without dead ends: 15 [2018-06-26 18:15:01,362 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 [2018-06-26 18:15:01,362 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-26 18:15:01,364 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-26 18:15:01,364 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-26 18:15:01,366 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 29 transitions. [2018-06-26 18:15:01,366 INFO ]: Start accepts. Automaton has 15 states and 29 transitions. Word has length 5 [2018-06-26 18:15:01,366 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:01,367 INFO ]: Abstraction has 15 states and 29 transitions. [2018-06-26 18:15:01,367 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:15:01,367 INFO ]: Start isEmpty. Operand 15 states and 29 transitions. [2018-06-26 18:15:01,367 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:15:01,367 INFO ]: Found error trace [2018-06-26 18:15:01,367 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:15:01,367 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:01,367 INFO ]: Analyzing trace with hash 1021764571, now seen corresponding path program 1 times [2018-06-26 18:15:01,367 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:01,367 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:01,368 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:01,368 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:01,368 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:01,385 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:01,461 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:15:01,461 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:15:01,461 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:15:01,461 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:15:01,461 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:15:01,461 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:15:01,461 INFO ]: Start difference. First operand 15 states and 29 transitions. Second operand 3 states. [2018-06-26 18:15:01,539 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:01,539 INFO ]: Finished difference Result 19 states and 32 transitions. [2018-06-26 18:15:01,539 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:15:01,539 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-26 18:15:01,539 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:01,541 INFO ]: With dead ends: 19 [2018-06-26 18:15:01,541 INFO ]: Without dead ends: 17 [2018-06-26 18:15:01,542 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 [2018-06-26 18:15:01,542 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-26 18:15:01,546 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 15. [2018-06-26 18:15:01,546 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-26 18:15:01,547 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 25 transitions. [2018-06-26 18:15:01,547 INFO ]: Start accepts. Automaton has 15 states and 25 transitions. Word has length 6 [2018-06-26 18:15:01,547 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:01,547 INFO ]: Abstraction has 15 states and 25 transitions. [2018-06-26 18:15:01,547 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:15:01,547 INFO ]: Start isEmpty. Operand 15 states and 25 transitions. [2018-06-26 18:15:01,548 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-26 18:15:01,548 INFO ]: Found error trace [2018-06-26 18:15:01,548 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:15:01,548 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:01,548 INFO ]: Analyzing trace with hash -1389128059, now seen corresponding path program 1 times [2018-06-26 18:15:01,548 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:01,548 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:01,549 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:01,549 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:01,549 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:01,561 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:01,647 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:15:01,647 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:15:01,648 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 18:15:01,648 INFO ]: Interpolant automaton has 4 states [2018-06-26 18:15:01,648 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 18:15:01,648 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 18:15:01,648 INFO ]: Start difference. First operand 15 states and 25 transitions. Second operand 4 states. [2018-06-26 18:15:01,793 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:01,793 INFO ]: Finished difference Result 19 states and 33 transitions. [2018-06-26 18:15:01,795 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 18:15:01,795 INFO ]: Start accepts. Automaton has 4 states. Word has length 10 [2018-06-26 18:15:01,795 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:01,795 INFO ]: With dead ends: 19 [2018-06-26 18:15:01,796 INFO ]: Without dead ends: 17 [2018-06-26 18:15:01,796 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 18:15:01,796 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-26 18:15:01,799 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-26 18:15:01,799 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-26 18:15:01,799 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 29 transitions. [2018-06-26 18:15:01,800 INFO ]: Start accepts. Automaton has 17 states and 29 transitions. Word has length 10 [2018-06-26 18:15:01,801 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:01,801 INFO ]: Abstraction has 17 states and 29 transitions. [2018-06-26 18:15:01,802 INFO ]: Interpolant automaton has 4 states. [2018-06-26 18:15:01,802 INFO ]: Start isEmpty. Operand 17 states and 29 transitions. [2018-06-26 18:15:01,802 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-26 18:15:01,802 INFO ]: Found error trace [2018-06-26 18:15:01,802 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:15:01,802 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:01,803 INFO ]: Analyzing trace with hash -113648488, now seen corresponding path program 1 times [2018-06-26 18:15:01,803 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:01,803 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:01,803 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:01,804 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:01,804 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:01,834 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:01,998 INFO ]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:15:01,999 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:15:01,999 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 [2018-06-26 18:15:02,008 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:02,035 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:02,043 INFO ]: Computing forward predicates... [2018-06-26 18:15:02,083 INFO ]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:15:02,105 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:15:02,105 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-26 18:15:02,105 INFO ]: Interpolant automaton has 7 states [2018-06-26 18:15:02,105 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-26 18:15:02,105 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-26 18:15:02,106 INFO ]: Start difference. First operand 17 states and 29 transitions. Second operand 7 states. [2018-06-26 18:15:02,317 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:02,317 INFO ]: Finished difference Result 23 states and 37 transitions. [2018-06-26 18:15:02,318 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-26 18:15:02,318 INFO ]: Start accepts. Automaton has 7 states. Word has length 11 [2018-06-26 18:15:02,318 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:02,319 INFO ]: With dead ends: 23 [2018-06-26 18:15:02,319 INFO ]: Without dead ends: 18 [2018-06-26 18:15:02,319 INFO ]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-06-26 18:15:02,319 INFO ]: Start minimizeSevpa. Operand 18 states. [2018-06-26 18:15:02,324 INFO ]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-06-26 18:15:02,324 INFO ]: Start removeUnreachable. Operand 18 states. [2018-06-26 18:15:02,325 INFO ]: Finished removeUnreachable. Reduced from 18 states to 18 states and 32 transitions. [2018-06-26 18:15:02,325 INFO ]: Start accepts. Automaton has 18 states and 32 transitions. Word has length 11 [2018-06-26 18:15:02,325 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:02,325 INFO ]: Abstraction has 18 states and 32 transitions. [2018-06-26 18:15:02,325 INFO ]: Interpolant automaton has 7 states. [2018-06-26 18:15:02,325 INFO ]: Start isEmpty. Operand 18 states and 32 transitions. [2018-06-26 18:15:02,326 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-26 18:15:02,326 INFO ]: Found error trace [2018-06-26 18:15:02,326 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:15:02,326 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:02,326 INFO ]: Analyzing trace with hash 1730991435, now seen corresponding path program 2 times [2018-06-26 18:15:02,326 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:02,326 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:02,327 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:02,327 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:02,327 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:02,345 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:02,406 INFO ]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-26 18:15:02,406 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:15:02,406 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:15:02,415 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-26 18:15:02,475 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-26 18:15:02,475 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:02,477 INFO ]: Computing forward predicates... [2018-06-26 18:15:02,858 INFO ]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-26 18:15:02,881 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:15:02,881 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2018-06-26 18:15:02,882 INFO ]: Interpolant automaton has 9 states [2018-06-26 18:15:02,882 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-26 18:15:02,882 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-26 18:15:02,882 INFO ]: Start difference. First operand 18 states and 32 transitions. Second operand 9 states. [2018-06-26 18:15:03,520 WARN ]: Spent 140.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-06-26 18:15:03,698 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:03,698 INFO ]: Finished difference Result 34 states and 64 transitions. [2018-06-26 18:15:03,699 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-26 18:15:03,699 INFO ]: Start accepts. Automaton has 9 states. Word has length 12 [2018-06-26 18:15:03,699 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:03,700 INFO ]: With dead ends: 34 [2018-06-26 18:15:03,700 INFO ]: Without dead ends: 21 [2018-06-26 18:15:03,700 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2018-06-26 18:15:03,700 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-26 18:15:03,703 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 18. [2018-06-26 18:15:03,703 INFO ]: Start removeUnreachable. Operand 18 states. [2018-06-26 18:15:03,704 INFO ]: Finished removeUnreachable. Reduced from 18 states to 18 states and 29 transitions. [2018-06-26 18:15:03,704 INFO ]: Start accepts. Automaton has 18 states and 29 transitions. Word has length 12 [2018-06-26 18:15:03,704 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:03,704 INFO ]: Abstraction has 18 states and 29 transitions. [2018-06-26 18:15:03,704 INFO ]: Interpolant automaton has 9 states. [2018-06-26 18:15:03,704 INFO ]: Start isEmpty. Operand 18 states and 29 transitions. [2018-06-26 18:15:03,705 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-26 18:15:03,705 INFO ]: Found error trace [2018-06-26 18:15:03,705 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:15:03,705 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:03,705 INFO ]: Analyzing trace with hash 921644809, now seen corresponding path program 1 times [2018-06-26 18:15:03,705 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:03,705 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:03,706 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:03,706 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-26 18:15:03,706 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:03,724 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:03,769 INFO ]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-26 18:15:03,769 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:15:03,769 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:15:03,779 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:03,797 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:03,801 INFO ]: Computing forward predicates... [2018-06-26 18:15:03,857 INFO ]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-26 18:15:03,889 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:15:03,889 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-26 18:15:03,890 INFO ]: Interpolant automaton has 8 states [2018-06-26 18:15:03,890 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-26 18:15:03,890 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-26 18:15:03,890 INFO ]: Start difference. First operand 18 states and 29 transitions. Second operand 8 states. [2018-06-26 18:15:04,007 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:04,008 INFO ]: Finished difference Result 24 states and 37 transitions. [2018-06-26 18:15:04,008 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-26 18:15:04,008 INFO ]: Start accepts. Automaton has 8 states. Word has length 12 [2018-06-26 18:15:04,008 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:04,009 INFO ]: With dead ends: 24 [2018-06-26 18:15:04,009 INFO ]: Without dead ends: 22 [2018-06-26 18:15:04,009 INFO ]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-06-26 18:15:04,009 INFO ]: Start minimizeSevpa. Operand 22 states. [2018-06-26 18:15:04,014 INFO ]: Finished minimizeSevpa. Reduced states from 22 to 19. [2018-06-26 18:15:04,014 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-26 18:15:04,015 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2018-06-26 18:15:04,015 INFO ]: Start accepts. Automaton has 19 states and 27 transitions. Word has length 12 [2018-06-26 18:15:04,015 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:04,015 INFO ]: Abstraction has 19 states and 27 transitions. [2018-06-26 18:15:04,015 INFO ]: Interpolant automaton has 8 states. [2018-06-26 18:15:04,015 INFO ]: Start isEmpty. Operand 19 states and 27 transitions. [2018-06-26 18:15:04,015 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-26 18:15:04,015 INFO ]: Found error trace [2018-06-26 18:15:04,015 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:15:04,016 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:04,016 INFO ]: Analyzing trace with hash 921674600, now seen corresponding path program 1 times [2018-06-26 18:15:04,016 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:04,016 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:04,017 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:04,017 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:04,017 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:04,028 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:04,174 INFO ]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-26 18:15:04,175 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:15:04,175 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 18:15:04,175 INFO ]: Interpolant automaton has 4 states [2018-06-26 18:15:04,175 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 18:15:04,175 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 18:15:04,175 INFO ]: Start difference. First operand 19 states and 27 transitions. Second operand 4 states. [2018-06-26 18:15:04,233 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:04,233 INFO ]: Finished difference Result 14 states and 17 transitions. [2018-06-26 18:15:04,236 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 18:15:04,236 INFO ]: Start accepts. Automaton has 4 states. Word has length 12 [2018-06-26 18:15:04,236 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:04,236 INFO ]: With dead ends: 14 [2018-06-26 18:15:04,236 INFO ]: Without dead ends: 0 [2018-06-26 18:15:04,236 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 18:15:04,236 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 18:15:04,236 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 18:15:04,236 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 18:15:04,237 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 18:15:04,237 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-06-26 18:15:04,237 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:04,237 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 18:15:04,237 INFO ]: Interpolant automaton has 4 states. [2018-06-26 18:15:04,237 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 18:15:04,237 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 18:15:04,239 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:15:04,242 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:15:04 BasicIcfg [2018-06-26 18:15:04,242 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:15:04,242 INFO ]: Toolchain (without parser) took 4015.80 ms. Allocated memory was 306.2 MB in the beginning and 326.1 MB in the end (delta: 19.9 MB). Free memory was 260.7 MB in the beginning and 220.0 MB in the end (delta: 40.7 MB). Peak memory consumption was 60.7 MB. Max. memory is 3.6 GB. [2018-06-26 18:15:04,243 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 306.2 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:15:04,243 INFO ]: ChcToBoogie took 54.49 ms. Allocated memory is still 306.2 MB. Free memory was 260.7 MB in the beginning and 258.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:15:04,244 INFO ]: Boogie Preprocessor took 34.48 ms. Allocated memory is still 306.2 MB. Free memory was 258.7 MB in the beginning and 256.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:15:04,244 INFO ]: RCFGBuilder took 205.01 ms. Allocated memory is still 306.2 MB. Free memory was 256.7 MB in the beginning and 248.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:15:04,245 INFO ]: BlockEncodingV2 took 130.40 ms. Allocated memory is still 306.2 MB. Free memory was 248.7 MB in the beginning and 244.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:15:04,245 INFO ]: TraceAbstraction took 3581.54 ms. Allocated memory was 306.2 MB in the beginning and 326.1 MB in the end (delta: 19.9 MB). Free memory was 244.7 MB in the beginning and 220.0 MB in the end (delta: 24.8 MB). Peak memory consumption was 44.7 MB. Max. memory is 3.6 GB. [2018-06-26 18:15:04,249 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 13 locations, 19 edges - StatisticsResult: Encoded RCFG 8 locations, 13 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 306.2 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 54.49 ms. Allocated memory is still 306.2 MB. Free memory was 260.7 MB in the beginning and 258.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 34.48 ms. Allocated memory is still 306.2 MB. Free memory was 258.7 MB in the beginning and 256.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 205.01 ms. Allocated memory is still 306.2 MB. Free memory was 256.7 MB in the beginning and 248.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 130.40 ms. Allocated memory is still 306.2 MB. Free memory was 248.7 MB in the beginning and 244.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3581.54 ms. Allocated memory was 306.2 MB in the beginning and 326.1 MB in the end (delta: 19.9 MB). Free memory was 244.7 MB in the beginning and 220.0 MB in the end (delta: 24.8 MB). Peak memory consumption was 44.7 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, 8 locations, 1 error locations. SAFE Result, 3.5s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 80 SDtfs, 29 SDslu, 126 SDs, 0 SdLazy, 247 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=7, 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, 8 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 2260 SizeOfPredicates, 10 NumberOfNonLiveVariables, 291 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 48/54 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/inductive.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-15-04-260.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inductive.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-15-04-260.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inductive.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-15-04-260.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inductive.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-15-04-260.csv Received shutdown request...