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/dotprod3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:14:42,071 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:14:42,075 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:14:42,086 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:14:42,087 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:14:42,088 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:14:42,089 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:14:42,090 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:14:42,092 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:14:42,093 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:14:42,093 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:14:42,094 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:14:42,094 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:14:42,095 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:14:42,096 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:14:42,097 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:14:42,101 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:14:42,103 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:14:42,112 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:14:42,114 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:14:42,115 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:14:42,120 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:14:42,120 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:14:42,120 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:14:42,121 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:14:42,122 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:14:42,123 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:14:42,123 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:14:42,129 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:14:42,129 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:14:42,129 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:14:42,130 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:14:42,130 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:14:42,131 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:14:42,131 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:14:42,133 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:14:42,151 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:14:42,152 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:14:42,152 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:14:42,152 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:14:42,153 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:14:42,153 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:14:42,153 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:14:42,154 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:14:42,154 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:14:42,154 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:14:42,154 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:14:42,154 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:14:42,155 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:14:42,155 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:14:42,155 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:14:42,155 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:14:42,155 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:14:42,156 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:14:42,156 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:14:42,156 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:14:42,156 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:14:42,157 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:14:42,157 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:14:42,199 INFO ]: Repository-Root is: /tmp [2018-06-24 21:14:42,216 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:14:42,224 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:14:42,225 INFO ]: Initializing SmtParser... [2018-06-24 21:14:42,225 INFO ]: SmtParser initialized [2018-06-24 21:14:42,226 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/dotprod3.smt2 [2018-06-24 21:14:42,227 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 21:14:42,315 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/dotprod3.smt2 unknown [2018-06-24 21:14:42,611 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/dotprod3.smt2 [2018-06-24 21:14:42,615 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:14:42,621 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:14:42,621 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:14:42,621 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:14:42,621 INFO ]: ChcToBoogie initialized [2018-06-24 21:14:42,628 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:14:42" (1/1) ... [2018-06-24 21:14:42,686 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:42 Unit [2018-06-24 21:14:42,686 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:14:42,687 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:14:42,687 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:14:42,687 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:14:42,710 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:42" (1/1) ... [2018-06-24 21:14:42,710 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:42" (1/1) ... [2018-06-24 21:14:42,716 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:42" (1/1) ... [2018-06-24 21:14:42,717 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:42" (1/1) ... [2018-06-24 21:14:42,721 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:42" (1/1) ... [2018-06-24 21:14:42,723 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:42" (1/1) ... [2018-06-24 21:14:42,724 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:42" (1/1) ... [2018-06-24 21:14:42,734 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:14:42,735 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:14:42,735 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:14:42,735 INFO ]: RCFGBuilder initialized [2018-06-24 21:14:42,736 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:42" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:14:42,759 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:14:42,759 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:14:42,759 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:14:42,759 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:14:42,759 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:14:42,759 INFO ]: Found implementation of procedure Ultimate.START [2018-06-24 21:14:43,191 INFO ]: Using library mode [2018-06-24 21:14:43,192 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:14:43 BoogieIcfgContainer [2018-06-24 21:14:43,192 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:14:43,192 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:14:43,192 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:14:43,194 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:14:43,194 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:14:43" (1/1) ... [2018-06-24 21:14:43,209 INFO ]: Initial Icfg 28 locations, 38 edges [2018-06-24 21:14:43,211 INFO ]: Using Remove infeasible edges [2018-06-24 21:14:43,211 INFO ]: Using Maximize final states [2018-06-24 21:14:43,212 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:14:43,212 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:14:43,216 INFO ]: Using Remove sink states [2018-06-24 21:14:43,217 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:14:43,217 INFO ]: Using Use SBE [2018-06-24 21:14:43,235 INFO ]: SBE split 1 edges [2018-06-24 21:14:43,242 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:14:43,243 INFO ]: 0 new accepting states [2018-06-24 21:14:43,550 INFO ]: Removed 35 edges and 11 locations by large block encoding [2018-06-24 21:14:43,552 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:14:43,553 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:14:43,553 INFO ]: 0 new accepting states [2018-06-24 21:14:43,553 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:14:43,554 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:14:43,558 INFO ]: Encoded RCFG 15 locations, 28 edges [2018-06-24 21:14:43,558 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:14:43 BasicIcfg [2018-06-24 21:14:43,559 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:14:43,559 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:14:43,559 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:14:43,563 INFO ]: TraceAbstraction initialized [2018-06-24 21:14:43,563 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:14:42" (1/4) ... [2018-06-24 21:14:43,564 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4865e481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:14:43, skipping insertion in model container [2018-06-24 21:14:43,564 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:42" (2/4) ... [2018-06-24 21:14:43,564 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4865e481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:14:43, skipping insertion in model container [2018-06-24 21:14:43,564 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:14:43" (3/4) ... [2018-06-24 21:14:43,565 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4865e481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:14:43, skipping insertion in model container [2018-06-24 21:14:43,565 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:14:43" (4/4) ... [2018-06-24 21:14:43,566 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:14:43,577 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:14:43,586 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:14:43,640 INFO ]: Using default assertion order modulation [2018-06-24 21:14:43,641 INFO ]: Interprodecural is true [2018-06-24 21:14:43,641 INFO ]: Hoare is false [2018-06-24 21:14:43,641 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:14:43,641 INFO ]: Backedges is TWOTRACK [2018-06-24 21:14:43,641 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:14:43,641 INFO ]: Difference is false [2018-06-24 21:14:43,641 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:14:43,641 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:14:43,651 INFO ]: Start isEmpty. Operand 15 states. [2018-06-24 21:14:43,661 INFO ]: Finished isEmpty. Found accepting run of length 5 [2018-06-24 21:14:43,661 INFO ]: Found error trace [2018-06-24 21:14:43,662 INFO ]: trace histogram [1, 1, 1, 1] [2018-06-24 21:14:43,662 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:43,666 INFO ]: Analyzing trace with hash 1188817, now seen corresponding path program 1 times [2018-06-24 21:14:43,667 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:43,667 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:43,699 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:43,699 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:43,699 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:43,736 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:43,787 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:14:43,789 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:14:43,789 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:14:43,790 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:14:43,803 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:14:43,803 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:14:43,806 INFO ]: Start difference. First operand 15 states. Second operand 3 states. [2018-06-24 21:14:44,112 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:44,112 INFO ]: Finished difference Result 25 states and 49 transitions. [2018-06-24 21:14:44,113 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:14:44,114 INFO ]: Start accepts. Automaton has 3 states. Word has length 4 [2018-06-24 21:14:44,114 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:44,123 INFO ]: With dead ends: 25 [2018-06-24 21:14:44,123 INFO ]: Without dead ends: 25 [2018-06-24 21:14:44,125 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 21:14:44,140 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-24 21:14:44,161 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-24 21:14:44,162 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-24 21:14:44,164 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 49 transitions. [2018-06-24 21:14:44,165 INFO ]: Start accepts. Automaton has 25 states and 49 transitions. Word has length 4 [2018-06-24 21:14:44,166 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:44,166 INFO ]: Abstraction has 25 states and 49 transitions. [2018-06-24 21:14:44,166 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:14:44,166 INFO ]: Start isEmpty. Operand 25 states and 49 transitions. [2018-06-24 21:14:44,168 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:14:44,168 INFO ]: Found error trace [2018-06-24 21:14:44,168 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:14:44,168 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:44,168 INFO ]: Analyzing trace with hash 36906304, now seen corresponding path program 1 times [2018-06-24 21:14:44,168 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:44,168 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:44,169 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:44,169 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:44,169 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:44,179 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:44,221 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:14:44,221 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:14:44,221 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:14:44,222 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:14:44,222 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:14:44,222 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:14:44,223 INFO ]: Start difference. First operand 25 states and 49 transitions. Second operand 3 states. [2018-06-24 21:14:44,250 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:44,250 INFO ]: Finished difference Result 43 states and 95 transitions. [2018-06-24 21:14:44,250 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:14:44,250 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:14:44,250 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:44,256 INFO ]: With dead ends: 43 [2018-06-24 21:14:44,256 INFO ]: Without dead ends: 43 [2018-06-24 21:14:44,256 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 21:14:44,257 INFO ]: Start minimizeSevpa. Operand 43 states. [2018-06-24 21:14:44,268 INFO ]: Finished minimizeSevpa. Reduced states from 43 to 27. [2018-06-24 21:14:44,268 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-24 21:14:44,270 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 53 transitions. [2018-06-24 21:14:44,270 INFO ]: Start accepts. Automaton has 27 states and 53 transitions. Word has length 5 [2018-06-24 21:14:44,270 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:44,270 INFO ]: Abstraction has 27 states and 53 transitions. [2018-06-24 21:14:44,270 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:14:44,270 INFO ]: Start isEmpty. Operand 27 states and 53 transitions. [2018-06-24 21:14:44,272 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:14:44,272 INFO ]: Found error trace [2018-06-24 21:14:44,272 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:14:44,272 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:44,272 INFO ]: Analyzing trace with hash 36936095, now seen corresponding path program 1 times [2018-06-24 21:14:44,272 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:44,272 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:44,272 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:44,272 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:44,272 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:44,283 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:44,317 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:14:44,317 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:14:44,317 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:14:44,317 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:14:44,317 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:14:44,317 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:14:44,317 INFO ]: Start difference. First operand 27 states and 53 transitions. Second operand 3 states. [2018-06-24 21:14:44,355 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:44,355 INFO ]: Finished difference Result 30 states and 50 transitions. [2018-06-24 21:14:44,355 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:14:44,355 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:14:44,355 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:44,357 INFO ]: With dead ends: 30 [2018-06-24 21:14:44,357 INFO ]: Without dead ends: 26 [2018-06-24 21:14:44,357 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 21:14:44,357 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-24 21:14:44,361 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-06-24 21:14:44,362 INFO ]: Start removeUnreachable. Operand 26 states. [2018-06-24 21:14:44,363 INFO ]: Finished removeUnreachable. Reduced from 26 states to 26 states and 46 transitions. [2018-06-24 21:14:44,363 INFO ]: Start accepts. Automaton has 26 states and 46 transitions. Word has length 5 [2018-06-24 21:14:44,363 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:44,363 INFO ]: Abstraction has 26 states and 46 transitions. [2018-06-24 21:14:44,363 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:14:44,363 INFO ]: Start isEmpty. Operand 26 states and 46 transitions. [2018-06-24 21:14:44,364 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:14:44,364 INFO ]: Found error trace [2018-06-24 21:14:44,364 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:14:44,365 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:44,365 INFO ]: Analyzing trace with hash 36995677, now seen corresponding path program 1 times [2018-06-24 21:14:44,365 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:44,365 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:44,366 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:44,366 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:44,366 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:44,374 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:44,456 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:14:44,457 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:14:44,457 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:14:44,457 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:14:44,457 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:14:44,457 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:14:44,457 INFO ]: Start difference. First operand 26 states and 46 transitions. Second operand 3 states. [2018-06-24 21:14:44,794 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:44,794 INFO ]: Finished difference Result 36 states and 65 transitions. [2018-06-24 21:14:44,794 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:14:44,794 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:14:44,795 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:44,796 INFO ]: With dead ends: 36 [2018-06-24 21:14:44,796 INFO ]: Without dead ends: 36 [2018-06-24 21:14:44,796 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 21:14:44,796 INFO ]: Start minimizeSevpa. Operand 36 states. [2018-06-24 21:14:44,801 INFO ]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-06-24 21:14:44,802 INFO ]: Start removeUnreachable. Operand 36 states. [2018-06-24 21:14:44,803 INFO ]: Finished removeUnreachable. Reduced from 36 states to 36 states and 65 transitions. [2018-06-24 21:14:44,803 INFO ]: Start accepts. Automaton has 36 states and 65 transitions. Word has length 5 [2018-06-24 21:14:44,803 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:44,803 INFO ]: Abstraction has 36 states and 65 transitions. [2018-06-24 21:14:44,803 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:14:44,803 INFO ]: Start isEmpty. Operand 36 states and 65 transitions. [2018-06-24 21:14:44,806 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-24 21:14:44,806 INFO ]: Found error trace [2018-06-24 21:14:44,806 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:14:44,806 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:44,807 INFO ]: Analyzing trace with hash -1184107483, now seen corresponding path program 1 times [2018-06-24 21:14:44,807 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:44,807 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:44,807 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:44,807 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:44,807 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:44,831 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:44,918 INFO ]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:14:44,918 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:14:44,918 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 21:14:44,946 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:44,989 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:44,998 INFO ]: Computing forward predicates... [2018-06-24 21:14:45,040 INFO ]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-24 21:14:45,075 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:14:45,075 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2018-06-24 21:14:45,075 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:14:45,075 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:14:45,075 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:14:45,076 INFO ]: Start difference. First operand 36 states and 65 transitions. Second operand 5 states. [2018-06-24 21:14:45,952 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:45,952 INFO ]: Finished difference Result 80 states and 223 transitions. [2018-06-24 21:14:45,952 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 21:14:45,953 INFO ]: Start accepts. Automaton has 5 states. Word has length 14 [2018-06-24 21:14:45,953 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:45,957 INFO ]: With dead ends: 80 [2018-06-24 21:14:45,957 INFO ]: Without dead ends: 71 [2018-06-24 21:14:45,958 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:14:45,958 INFO ]: Start minimizeSevpa. Operand 71 states. [2018-06-24 21:14:45,982 INFO ]: Finished minimizeSevpa. Reduced states from 71 to 39. [2018-06-24 21:14:45,982 INFO ]: Start removeUnreachable. Operand 39 states. [2018-06-24 21:14:45,983 INFO ]: Finished removeUnreachable. Reduced from 39 states to 39 states and 75 transitions. [2018-06-24 21:14:45,984 INFO ]: Start accepts. Automaton has 39 states and 75 transitions. Word has length 14 [2018-06-24 21:14:45,984 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:45,984 INFO ]: Abstraction has 39 states and 75 transitions. [2018-06-24 21:14:45,984 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:14:45,984 INFO ]: Start isEmpty. Operand 39 states and 75 transitions. [2018-06-24 21:14:45,986 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-24 21:14:45,986 INFO ]: Found error trace [2018-06-24 21:14:45,986 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:14:45,987 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:45,987 INFO ]: Analyzing trace with hash 340929102, now seen corresponding path program 1 times [2018-06-24 21:14:45,987 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:45,987 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:45,988 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:45,988 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:45,988 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:45,995 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:14:45,995 INFO ]: Advancing trace checker [2018-06-24 21:14:45,995 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-24 21:14:46,005 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:46,037 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:46,040 INFO ]: Computing forward predicates... [2018-06-24 21:14:46,088 INFO ]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-24 21:14:46,112 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:14:46,112 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-24 21:14:46,112 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:14:46,112 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:14:46,113 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:14:46,113 INFO ]: Start difference. First operand 39 states and 75 transitions. Second operand 5 states. [2018-06-24 21:14:46,411 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:46,411 INFO ]: Finished difference Result 62 states and 141 transitions. [2018-06-24 21:14:46,412 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 21:14:46,412 INFO ]: Start accepts. Automaton has 5 states. Word has length 17 [2018-06-24 21:14:46,412 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:46,414 INFO ]: With dead ends: 62 [2018-06-24 21:14:46,414 INFO ]: Without dead ends: 62 [2018-06-24 21:14:46,414 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:14:46,415 INFO ]: Start minimizeSevpa. Operand 62 states. [2018-06-24 21:14:46,436 INFO ]: Finished minimizeSevpa. Reduced states from 62 to 45. [2018-06-24 21:14:46,436 INFO ]: Start removeUnreachable. Operand 45 states. [2018-06-24 21:14:46,438 INFO ]: Finished removeUnreachable. Reduced from 45 states to 45 states and 87 transitions. [2018-06-24 21:14:46,438 INFO ]: Start accepts. Automaton has 45 states and 87 transitions. Word has length 17 [2018-06-24 21:14:46,438 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:46,438 INFO ]: Abstraction has 45 states and 87 transitions. [2018-06-24 21:14:46,438 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:14:46,438 INFO ]: Start isEmpty. Operand 45 states and 87 transitions. [2018-06-24 21:14:46,445 INFO ]: Finished isEmpty. Found accepting run of length 27 [2018-06-24 21:14:46,448 INFO ]: Found error trace [2018-06-24 21:14:46,448 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:14:46,448 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:46,448 INFO ]: Analyzing trace with hash 711840956, now seen corresponding path program 1 times [2018-06-24 21:14:46,449 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:46,449 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:46,449 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:46,449 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:46,449 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:46,466 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:14:46,466 INFO ]: Advancing trace checker [2018-06-24 21:14:46,466 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-24 21:14:46,483 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:46,534 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:46,537 INFO ]: Computing forward predicates... [2018-06-24 21:14:46,582 INFO ]: Checked inductivity of 35 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-06-24 21:14:46,604 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:14:46,604 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-06-24 21:14:46,605 INFO ]: Interpolant automaton has 7 states [2018-06-24 21:14:46,605 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-24 21:14:46,605 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:14:46,605 INFO ]: Start difference. First operand 45 states and 87 transitions. Second operand 7 states. [2018-06-24 21:14:47,741 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:47,741 INFO ]: Finished difference Result 97 states and 306 transitions. [2018-06-24 21:14:47,741 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-24 21:14:47,741 INFO ]: Start accepts. Automaton has 7 states. Word has length 26 [2018-06-24 21:14:47,741 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:47,745 INFO ]: With dead ends: 97 [2018-06-24 21:14:47,745 INFO ]: Without dead ends: 89 [2018-06-24 21:14:47,745 INFO ]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2018-06-24 21:14:47,746 INFO ]: Start minimizeSevpa. Operand 89 states. [2018-06-24 21:14:47,765 INFO ]: Finished minimizeSevpa. Reduced states from 89 to 53. [2018-06-24 21:14:47,766 INFO ]: Start removeUnreachable. Operand 53 states. [2018-06-24 21:14:47,767 INFO ]: Finished removeUnreachable. Reduced from 53 states to 53 states and 120 transitions. [2018-06-24 21:14:47,768 INFO ]: Start accepts. Automaton has 53 states and 120 transitions. Word has length 26 [2018-06-24 21:14:47,768 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:47,768 INFO ]: Abstraction has 53 states and 120 transitions. [2018-06-24 21:14:47,768 INFO ]: Interpolant automaton has 7 states. [2018-06-24 21:14:47,768 INFO ]: Start isEmpty. Operand 53 states and 120 transitions. [2018-06-24 21:14:47,770 INFO ]: Finished isEmpty. Found accepting run of length 29 [2018-06-24 21:14:47,770 INFO ]: Found error trace [2018-06-24 21:14:47,771 INFO ]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:14:47,771 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:47,771 INFO ]: Analyzing trace with hash -564011807, now seen corresponding path program 1 times [2018-06-24 21:14:47,771 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:47,771 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:47,772 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:47,772 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:47,772 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:47,785 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:47,868 INFO ]: Checked inductivity of 40 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-06-24 21:14:47,868 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:14:47,868 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-24 21:14:47,883 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:14:47,938 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:47,941 INFO ]: Computing forward predicates... [2018-06-24 21:14:47,947 INFO ]: Checked inductivity of 40 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-06-24 21:14:47,968 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:14:47,969 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2018-06-24 21:14:47,969 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:14:47,969 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:14:47,969 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:14:47,969 INFO ]: Start difference. First operand 53 states and 120 transitions. Second operand 3 states. [2018-06-24 21:14:48,105 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:48,105 INFO ]: Finished difference Result 65 states and 131 transitions. [2018-06-24 21:14:48,106 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:14:48,106 INFO ]: Start accepts. Automaton has 3 states. Word has length 28 [2018-06-24 21:14:48,106 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:48,108 INFO ]: With dead ends: 65 [2018-06-24 21:14:48,108 INFO ]: Without dead ends: 65 [2018-06-24 21:14:48,108 INFO ]: 0 DeclaredPredicates, 30 GetRequests, 29 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 21:14:48,108 INFO ]: Start minimizeSevpa. Operand 65 states. [2018-06-24 21:14:48,117 INFO ]: Finished minimizeSevpa. Reduced states from 65 to 60. [2018-06-24 21:14:48,117 INFO ]: Start removeUnreachable. Operand 60 states. [2018-06-24 21:14:48,119 INFO ]: Finished removeUnreachable. Reduced from 60 states to 60 states and 121 transitions. [2018-06-24 21:14:48,119 INFO ]: Start accepts. Automaton has 60 states and 121 transitions. Word has length 28 [2018-06-24 21:14:48,119 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:48,119 INFO ]: Abstraction has 60 states and 121 transitions. [2018-06-24 21:14:48,119 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:14:48,119 INFO ]: Start isEmpty. Operand 60 states and 121 transitions. [2018-06-24 21:14:48,124 INFO ]: Finished isEmpty. Found accepting run of length 107 [2018-06-24 21:14:48,124 INFO ]: Found error trace [2018-06-24 21:14:48,124 INFO ]: trace histogram [11, 11, 8, 8, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2018-06-24 21:14:48,124 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:48,124 INFO ]: Analyzing trace with hash 1714909153, now seen corresponding path program 1 times [2018-06-24 21:14:48,124 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:48,124 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:48,125 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:48,125 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:48,125 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:48,141 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:14:48,141 INFO ]: Advancing trace checker [2018-06-24 21:14:48,141 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-24 21:14:48,156 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:48,351 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:48,363 INFO ]: Computing forward predicates... [2018-06-24 21:14:48,668 INFO ]: Checked inductivity of 735 backedges. 353 proven. 9 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2018-06-24 21:14:48,700 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:14:48,700 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-06-24 21:14:48,700 INFO ]: Interpolant automaton has 7 states [2018-06-24 21:14:48,700 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-24 21:14:48,701 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:14:48,701 INFO ]: Start difference. First operand 60 states and 121 transitions. Second operand 7 states. [2018-06-24 21:14:48,966 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:48,966 INFO ]: Finished difference Result 46 states and 81 transitions. [2018-06-24 21:14:48,966 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-24 21:14:48,966 INFO ]: Start accepts. Automaton has 7 states. Word has length 106 [2018-06-24 21:14:48,967 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:48,967 INFO ]: With dead ends: 46 [2018-06-24 21:14:48,967 INFO ]: Without dead ends: 0 [2018-06-24 21:14:48,967 INFO ]: 0 DeclaredPredicates, 109 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-06-24 21:14:48,967 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:14:48,967 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:14:48,967 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:14:48,967 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:14:48,967 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 106 [2018-06-24 21:14:48,967 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:48,967 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:14:48,967 INFO ]: Interpolant automaton has 7 states. [2018-06-24 21:14:48,967 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:14:48,967 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:14:48,969 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:14:48,971 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:14:48 BasicIcfg [2018-06-24 21:14:48,971 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:14:48,971 INFO ]: Toolchain (without parser) took 6355.46 ms. Allocated memory was 308.3 MB in the beginning and 368.6 MB in the end (delta: 60.3 MB). Free memory was 260.8 MB in the beginning and 307.4 MB in the end (delta: -46.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 3.6 GB. [2018-06-24 21:14:48,972 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.3 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:14:48,973 INFO ]: ChcToBoogie took 65.11 ms. Allocated memory is still 308.3 MB. Free memory was 260.8 MB in the beginning and 258.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:14:48,973 INFO ]: Boogie Preprocessor took 47.78 ms. Allocated memory is still 308.3 MB. Free memory was 258.8 MB in the beginning and 256.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:14:48,974 INFO ]: RCFGBuilder took 457.31 ms. Allocated memory is still 308.3 MB. Free memory was 256.8 MB in the beginning and 244.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:14:48,974 INFO ]: BlockEncodingV2 took 366.10 ms. Allocated memory is still 308.3 MB. Free memory was 244.9 MB in the beginning and 234.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:14:48,975 INFO ]: TraceAbstraction took 5411.29 ms. Allocated memory was 308.3 MB in the beginning and 368.6 MB in the end (delta: 60.3 MB). Free memory was 234.9 MB in the beginning and 307.4 MB in the end (delta: -72.5 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:14:48,978 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 28 locations, 38 edges - StatisticsResult: Encoded RCFG 15 locations, 28 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 308.3 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 65.11 ms. Allocated memory is still 308.3 MB. Free memory was 260.8 MB in the beginning and 258.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 47.78 ms. Allocated memory is still 308.3 MB. Free memory was 258.8 MB in the beginning and 256.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 457.31 ms. Allocated memory is still 308.3 MB. Free memory was 256.8 MB in the beginning and 244.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 366.10 ms. Allocated memory is still 308.3 MB. Free memory was 244.9 MB in the beginning and 234.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 5411.29 ms. Allocated memory was 308.3 MB in the beginning and 368.6 MB in the end (delta: 60.3 MB). Free memory was 234.9 MB in the beginning and 307.4 MB in the end (delta: -72.5 MB). There was no memory consumed. 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, 15 locations, 1 error locations. SAFE Result, 5.3s OverallTime, 9 OverallIterations, 11 TraceHistogramMax, 3.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 383 SDtfs, 130 SDslu, 443 SDs, 0 SdLazy, 848 SolverSat, 235 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=8, 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 106 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 18101 SizeOfPredicates, 21 NumberOfNonLiveVariables, 2219 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 862/877 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/dotprod3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-14-48-988.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-14-48-988.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-14-48-988.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-14-48-988.csv Received shutdown request...