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/dotprod.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:19:09,588 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:19:09,590 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:19:09,604 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:19:09,604 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:19:09,605 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:19:09,608 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:19:09,610 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:19:09,612 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:19:09,612 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:19:09,614 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:19:09,614 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:19:09,615 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:19:09,616 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:19:09,617 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:19:09,617 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:19:09,620 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:19:09,622 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:19:09,624 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:19:09,635 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:19:09,635 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:19:09,638 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:19:09,640 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:19:09,640 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:19:09,640 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:19:09,641 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:19:09,643 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:19:09,643 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:19:09,644 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:19:09,645 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:19:09,645 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:19:09,646 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:19:09,646 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:19:09,646 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:19:09,647 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:19:09,648 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:19:09,648 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:19:09,661 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:19:09,662 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:19:09,662 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:19:09,662 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:19:09,663 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:19:09,663 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:19:09,663 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:19:09,663 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:19:09,664 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:19:09,664 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:19:09,664 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:19:09,664 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:19:09,664 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:19:09,665 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:19:09,665 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:19:09,665 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:19:09,665 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:19:09,665 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:19:09,666 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:19:09,666 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:19:09,666 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:19:09,667 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:19:09,668 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:19:09,717 INFO ]: Repository-Root is: /tmp [2018-06-26 18:19:09,733 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:19:09,738 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:19:09,739 INFO ]: Initializing SmtParser... [2018-06-26 18:19:09,739 INFO ]: SmtParser initialized [2018-06-26 18:19:09,740 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/dotprod.smt2 [2018-06-26 18:19:09,741 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 18:19:09,832 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/dotprod.smt2 unknown [2018-06-26 18:19:10,147 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/dotprod.smt2 [2018-06-26 18:19:10,153 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:19:10,161 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:19:10,161 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:19:10,161 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:19:10,162 INFO ]: ChcToBoogie initialized [2018-06-26 18:19:10,169 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:19:10" (1/1) ... [2018-06-26 18:19:10,223 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:10 Unit [2018-06-26 18:19:10,223 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:19:10,224 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:19:10,224 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:19:10,224 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:19:10,246 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:10" (1/1) ... [2018-06-26 18:19:10,246 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:10" (1/1) ... [2018-06-26 18:19:10,253 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:10" (1/1) ... [2018-06-26 18:19:10,253 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:10" (1/1) ... [2018-06-26 18:19:10,258 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:10" (1/1) ... [2018-06-26 18:19:10,268 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:10" (1/1) ... [2018-06-26 18:19:10,270 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:10" (1/1) ... [2018-06-26 18:19:10,271 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:19:10,277 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:19:10,277 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:19:10,277 INFO ]: RCFGBuilder initialized [2018-06-26 18:19:10,278 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:10" (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 18:19:10,289 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:19:10,290 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:19:10,290 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:19:10,290 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:19:10,290 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:19:10,290 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 18:19:10,675 INFO ]: Using library mode [2018-06-26 18:19:10,675 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:19:10 BoogieIcfgContainer [2018-06-26 18:19:10,676 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:19:10,676 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:19:10,676 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:19:10,677 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:19:10,677 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:19:10" (1/1) ... [2018-06-26 18:19:10,691 INFO ]: Initial Icfg 29 locations, 41 edges [2018-06-26 18:19:10,692 INFO ]: Using Remove infeasible edges [2018-06-26 18:19:10,692 INFO ]: Using Maximize final states [2018-06-26 18:19:10,692 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:19:10,692 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:19:10,695 INFO ]: Using Remove sink states [2018-06-26 18:19:10,696 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:19:10,696 INFO ]: Using Use SBE [2018-06-26 18:19:10,722 INFO ]: SBE split 2 edges [2018-06-26 18:19:10,727 INFO ]: Removed 4 edges and 2 locations because of local infeasibility [2018-06-26 18:19:10,729 INFO ]: 0 new accepting states [2018-06-26 18:19:10,880 INFO ]: Removed 38 edges and 11 locations by large block encoding [2018-06-26 18:19:10,882 INFO ]: Removed 3 edges and 1 locations by removing sink states [2018-06-26 18:19:10,884 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:19:10,884 INFO ]: 0 new accepting states [2018-06-26 18:19:10,884 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:19:10,885 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:19:10,885 INFO ]: Encoded RCFG 15 locations, 28 edges [2018-06-26 18:19:10,885 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:19:10 BasicIcfg [2018-06-26 18:19:10,885 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:19:10,888 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:19:10,888 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:19:10,891 INFO ]: TraceAbstraction initialized [2018-06-26 18:19:10,891 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:19:10" (1/4) ... [2018-06-26 18:19:10,893 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522eae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:19:10, skipping insertion in model container [2018-06-26 18:19:10,893 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:19:10" (2/4) ... [2018-06-26 18:19:10,894 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522eae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:19:10, skipping insertion in model container [2018-06-26 18:19:10,894 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:19:10" (3/4) ... [2018-06-26 18:19:10,894 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522eae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:19:10, skipping insertion in model container [2018-06-26 18:19:10,894 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:19:10" (4/4) ... [2018-06-26 18:19:10,896 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:19:10,903 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:19:10,909 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:19:10,944 INFO ]: Using default assertion order modulation [2018-06-26 18:19:10,945 INFO ]: Interprodecural is true [2018-06-26 18:19:10,945 INFO ]: Hoare is false [2018-06-26 18:19:10,945 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:19:10,945 INFO ]: Backedges is TWOTRACK [2018-06-26 18:19:10,945 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:19:10,945 INFO ]: Difference is false [2018-06-26 18:19:10,945 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:19:10,945 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:19:10,957 INFO ]: Start isEmpty. Operand 15 states. [2018-06-26 18:19:10,972 INFO ]: Finished isEmpty. Found accepting run of length 5 [2018-06-26 18:19:10,972 INFO ]: Found error trace [2018-06-26 18:19:10,973 INFO ]: trace histogram [1, 1, 1, 1] [2018-06-26 18:19:10,973 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:19:10,978 INFO ]: Analyzing trace with hash 1187115, now seen corresponding path program 1 times [2018-06-26 18:19:10,980 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:19:10,980 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:19:11,020 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:11,020 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:11,020 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:11,056 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:11,114 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:19:11,116 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:19:11,116 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:19:11,117 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:19:11,127 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:19:11,128 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:19:11,130 INFO ]: Start difference. First operand 15 states. Second operand 3 states. [2018-06-26 18:19:11,555 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:19:11,556 INFO ]: Finished difference Result 25 states and 46 transitions. [2018-06-26 18:19:11,557 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:19:11,558 INFO ]: Start accepts. Automaton has 3 states. Word has length 4 [2018-06-26 18:19:11,558 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:19:11,575 INFO ]: With dead ends: 25 [2018-06-26 18:19:11,576 INFO ]: Without dead ends: 25 [2018-06-26 18:19:11,577 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 18:19:11,605 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-26 18:19:11,639 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-26 18:19:11,641 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-26 18:19:11,642 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 46 transitions. [2018-06-26 18:19:11,644 INFO ]: Start accepts. Automaton has 25 states and 46 transitions. Word has length 4 [2018-06-26 18:19:11,646 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:19:11,646 INFO ]: Abstraction has 25 states and 46 transitions. [2018-06-26 18:19:11,646 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:19:11,646 INFO ]: Start isEmpty. Operand 25 states and 46 transitions. [2018-06-26 18:19:11,650 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-26 18:19:11,650 INFO ]: Found error trace [2018-06-26 18:19:11,650 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:19:11,650 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:19:11,650 INFO ]: Analyzing trace with hash -41411594, now seen corresponding path program 1 times [2018-06-26 18:19:11,650 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:19:11,650 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:19:11,651 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:11,651 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:11,651 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:11,662 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:11,746 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:19:11,746 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:19:11,746 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:19:11,747 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:19:11,747 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:19:11,747 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:19:11,747 INFO ]: Start difference. First operand 25 states and 46 transitions. Second operand 3 states. [2018-06-26 18:19:12,066 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:19:12,066 INFO ]: Finished difference Result 35 states and 65 transitions. [2018-06-26 18:19:12,068 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:19:12,068 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-26 18:19:12,068 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:19:12,069 INFO ]: With dead ends: 35 [2018-06-26 18:19:12,069 INFO ]: Without dead ends: 35 [2018-06-26 18:19:12,070 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 18:19:12,070 INFO ]: Start minimizeSevpa. Operand 35 states. [2018-06-26 18:19:12,083 INFO ]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-06-26 18:19:12,083 INFO ]: Start removeUnreachable. Operand 35 states. [2018-06-26 18:19:12,087 INFO ]: Finished removeUnreachable. Reduced from 35 states to 35 states and 65 transitions. [2018-06-26 18:19:12,088 INFO ]: Start accepts. Automaton has 35 states and 65 transitions. Word has length 8 [2018-06-26 18:19:12,090 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:19:12,090 INFO ]: Abstraction has 35 states and 65 transitions. [2018-06-26 18:19:12,090 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:19:12,090 INFO ]: Start isEmpty. Operand 35 states and 65 transitions. [2018-06-26 18:19:12,092 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-26 18:19:12,092 INFO ]: Found error trace [2018-06-26 18:19:12,092 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:19:12,092 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:19:12,093 INFO ]: Analyzing trace with hash -694943506, now seen corresponding path program 1 times [2018-06-26 18:19:12,093 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:19:12,093 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:19:12,093 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:12,094 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:12,094 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:12,105 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:12,153 INFO ]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-26 18:19:12,153 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:19:12,153 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:19:12,153 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:19:12,154 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:19:12,154 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:19:12,154 INFO ]: Start difference. First operand 35 states and 65 transitions. Second operand 3 states. [2018-06-26 18:19:12,341 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:19:12,341 INFO ]: Finished difference Result 45 states and 86 transitions. [2018-06-26 18:19:12,341 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:19:12,342 INFO ]: Start accepts. Automaton has 3 states. Word has length 12 [2018-06-26 18:19:12,343 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:19:12,346 INFO ]: With dead ends: 45 [2018-06-26 18:19:12,346 INFO ]: Without dead ends: 45 [2018-06-26 18:19:12,346 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 18:19:12,346 INFO ]: Start minimizeSevpa. Operand 45 states. [2018-06-26 18:19:12,355 INFO ]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-06-26 18:19:12,355 INFO ]: Start removeUnreachable. Operand 45 states. [2018-06-26 18:19:12,357 INFO ]: Finished removeUnreachable. Reduced from 45 states to 45 states and 86 transitions. [2018-06-26 18:19:12,357 INFO ]: Start accepts. Automaton has 45 states and 86 transitions. Word has length 12 [2018-06-26 18:19:12,357 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:19:12,357 INFO ]: Abstraction has 45 states and 86 transitions. [2018-06-26 18:19:12,357 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:19:12,357 INFO ]: Start isEmpty. Operand 45 states and 86 transitions. [2018-06-26 18:19:12,361 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-26 18:19:12,361 INFO ]: Found error trace [2018-06-26 18:19:12,361 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:19:12,361 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:19:12,361 INFO ]: Analyzing trace with hash 1061057530, now seen corresponding path program 1 times [2018-06-26 18:19:12,361 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:19:12,361 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:19:12,362 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:12,362 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:12,362 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:12,373 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:12,422 INFO ]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-26 18:19:12,422 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:19:12,422 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:19:12,422 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:19:12,422 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:19:12,422 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:19:12,423 INFO ]: Start difference. First operand 45 states and 86 transitions. Second operand 3 states. [2018-06-26 18:19:12,599 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:19:12,599 INFO ]: Finished difference Result 55 states and 108 transitions. [2018-06-26 18:19:12,600 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:19:12,600 INFO ]: Start accepts. Automaton has 3 states. Word has length 13 [2018-06-26 18:19:12,600 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:19:12,602 INFO ]: With dead ends: 55 [2018-06-26 18:19:12,602 INFO ]: Without dead ends: 55 [2018-06-26 18:19:12,602 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 18:19:12,603 INFO ]: Start minimizeSevpa. Operand 55 states. [2018-06-26 18:19:12,611 INFO ]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-06-26 18:19:12,611 INFO ]: Start removeUnreachable. Operand 55 states. [2018-06-26 18:19:12,613 INFO ]: Finished removeUnreachable. Reduced from 55 states to 55 states and 108 transitions. [2018-06-26 18:19:12,613 INFO ]: Start accepts. Automaton has 55 states and 108 transitions. Word has length 13 [2018-06-26 18:19:12,613 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:19:12,613 INFO ]: Abstraction has 55 states and 108 transitions. [2018-06-26 18:19:12,613 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:19:12,613 INFO ]: Start isEmpty. Operand 55 states and 108 transitions. [2018-06-26 18:19:12,617 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-26 18:19:12,617 INFO ]: Found error trace [2018-06-26 18:19:12,617 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:19:12,617 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:19:12,617 INFO ]: Analyzing trace with hash 1577388406, now seen corresponding path program 1 times [2018-06-26 18:19:12,617 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:19:12,617 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:19:12,618 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:12,618 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:12,618 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:12,626 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:12,691 INFO ]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-26 18:19:12,691 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:19:12,691 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:19:12,692 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:19:12,692 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:19:12,692 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:19:12,692 INFO ]: Start difference. First operand 55 states and 108 transitions. Second operand 3 states. [2018-06-26 18:19:12,773 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:19:12,773 INFO ]: Finished difference Result 85 states and 158 transitions. [2018-06-26 18:19:12,773 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:19:12,773 INFO ]: Start accepts. Automaton has 3 states. Word has length 13 [2018-06-26 18:19:12,774 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:19:12,776 INFO ]: With dead ends: 85 [2018-06-26 18:19:12,776 INFO ]: Without dead ends: 85 [2018-06-26 18:19:12,776 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 18:19:12,777 INFO ]: Start minimizeSevpa. Operand 85 states. [2018-06-26 18:19:12,787 INFO ]: Finished minimizeSevpa. Reduced states from 85 to 70. [2018-06-26 18:19:12,787 INFO ]: Start removeUnreachable. Operand 70 states. [2018-06-26 18:19:12,789 INFO ]: Finished removeUnreachable. Reduced from 70 states to 70 states and 133 transitions. [2018-06-26 18:19:12,789 INFO ]: Start accepts. Automaton has 70 states and 133 transitions. Word has length 13 [2018-06-26 18:19:12,789 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:19:12,789 INFO ]: Abstraction has 70 states and 133 transitions. [2018-06-26 18:19:12,789 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:19:12,789 INFO ]: Start isEmpty. Operand 70 states and 133 transitions. [2018-06-26 18:19:12,793 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-26 18:19:12,793 INFO ]: Found error trace [2018-06-26 18:19:12,793 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:19:12,794 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:19:12,794 INFO ]: Analyzing trace with hash 2093719282, now seen corresponding path program 1 times [2018-06-26 18:19:12,794 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:19:12,794 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:19:12,794 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:12,795 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:12,795 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:12,820 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:13,297 INFO ]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-26 18:19:13,297 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:19:13,297 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 18:19:13,304 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:13,338 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:13,344 INFO ]: Computing forward predicates... [2018-06-26 18:19:13,617 INFO ]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-26 18:19:13,641 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:19:13,641 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-26 18:19:13,641 INFO ]: Interpolant automaton has 11 states [2018-06-26 18:19:13,641 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-26 18:19:13,641 INFO ]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-06-26 18:19:13,641 INFO ]: Start difference. First operand 70 states and 133 transitions. Second operand 11 states. [2018-06-26 18:19:15,124 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:19:15,125 INFO ]: Finished difference Result 169 states and 403 transitions. [2018-06-26 18:19:15,126 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-26 18:19:15,126 INFO ]: Start accepts. Automaton has 11 states. Word has length 13 [2018-06-26 18:19:15,126 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:19:15,133 INFO ]: With dead ends: 169 [2018-06-26 18:19:15,133 INFO ]: Without dead ends: 145 [2018-06-26 18:19:15,134 INFO ]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2018-06-26 18:19:15,134 INFO ]: Start minimizeSevpa. Operand 145 states. [2018-06-26 18:19:15,174 INFO ]: Finished minimizeSevpa. Reduced states from 145 to 83. [2018-06-26 18:19:15,174 INFO ]: Start removeUnreachable. Operand 83 states. [2018-06-26 18:19:15,176 INFO ]: Finished removeUnreachable. Reduced from 83 states to 83 states and 159 transitions. [2018-06-26 18:19:15,176 INFO ]: Start accepts. Automaton has 83 states and 159 transitions. Word has length 13 [2018-06-26 18:19:15,176 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:19:15,176 INFO ]: Abstraction has 83 states and 159 transitions. [2018-06-26 18:19:15,176 INFO ]: Interpolant automaton has 11 states. [2018-06-26 18:19:15,176 INFO ]: Start isEmpty. Operand 83 states and 159 transitions. [2018-06-26 18:19:15,180 INFO ]: Finished isEmpty. Found accepting run of length 27 [2018-06-26 18:19:15,180 INFO ]: Found error trace [2018-06-26 18:19:15,180 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:19:15,180 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:19:15,180 INFO ]: Analyzing trace with hash -1746105273, now seen corresponding path program 1 times [2018-06-26 18:19:15,180 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:19:15,180 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:19:15,181 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:15,181 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:15,181 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:15,206 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:15,320 INFO ]: Checked inductivity of 35 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-26 18:19:15,320 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:19:15,320 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 18:19:15,331 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:15,375 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:15,379 INFO ]: Computing forward predicates... [2018-06-26 18:19:15,682 INFO ]: Checked inductivity of 35 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-26 18:19:15,710 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:19:15,710 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2018-06-26 18:19:15,711 INFO ]: Interpolant automaton has 15 states [2018-06-26 18:19:15,711 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-26 18:19:15,711 INFO ]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2018-06-26 18:19:15,711 INFO ]: Start difference. First operand 83 states and 159 transitions. Second operand 15 states. [2018-06-26 18:19:17,393 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:19:17,393 INFO ]: Finished difference Result 225 states and 560 transitions. [2018-06-26 18:19:17,393 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-06-26 18:19:17,393 INFO ]: Start accepts. Automaton has 15 states. Word has length 26 [2018-06-26 18:19:17,394 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:19:17,401 INFO ]: With dead ends: 225 [2018-06-26 18:19:17,401 INFO ]: Without dead ends: 166 [2018-06-26 18:19:17,401 INFO ]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=235, Invalid=1171, Unknown=0, NotChecked=0, Total=1406 [2018-06-26 18:19:17,402 INFO ]: Start minimizeSevpa. Operand 166 states. [2018-06-26 18:19:17,468 INFO ]: Finished minimizeSevpa. Reduced states from 166 to 110. [2018-06-26 18:19:17,468 INFO ]: Start removeUnreachable. Operand 110 states. [2018-06-26 18:19:17,474 INFO ]: Finished removeUnreachable. Reduced from 110 states to 110 states and 225 transitions. [2018-06-26 18:19:17,474 INFO ]: Start accepts. Automaton has 110 states and 225 transitions. Word has length 26 [2018-06-26 18:19:17,474 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:19:17,474 INFO ]: Abstraction has 110 states and 225 transitions. [2018-06-26 18:19:17,475 INFO ]: Interpolant automaton has 15 states. [2018-06-26 18:19:17,475 INFO ]: Start isEmpty. Operand 110 states and 225 transitions. [2018-06-26 18:19:17,481 INFO ]: Finished isEmpty. Found accepting run of length 39 [2018-06-26 18:19:17,481 INFO ]: Found error trace [2018-06-26 18:19:17,481 INFO ]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:19:17,482 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:19:17,482 INFO ]: Analyzing trace with hash 1847739364, now seen corresponding path program 1 times [2018-06-26 18:19:17,482 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:19:17,482 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:19:17,483 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:17,483 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:17,483 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:17,500 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:19:17,500 INFO ]: Advancing trace checker [2018-06-26 18:19:17,500 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) [2018-06-26 18:19:17,515 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-26 18:19:17,583 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:17,587 INFO ]: Computing forward predicates... [2018-06-26 18:19:17,609 INFO ]: Checked inductivity of 87 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-26 18:19:17,636 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:19:17,636 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-06-26 18:19:17,636 INFO ]: Interpolant automaton has 5 states [2018-06-26 18:19:17,636 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 18:19:17,636 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-26 18:19:17,637 INFO ]: Start difference. First operand 110 states and 225 transitions. Second operand 5 states. [2018-06-26 18:19:17,836 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:19:17,836 INFO ]: Finished difference Result 138 states and 307 transitions. [2018-06-26 18:19:17,837 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-26 18:19:17,837 INFO ]: Start accepts. Automaton has 5 states. Word has length 38 [2018-06-26 18:19:17,838 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:19:17,839 INFO ]: With dead ends: 138 [2018-06-26 18:19:17,839 INFO ]: Without dead ends: 98 [2018-06-26 18:19:17,839 INFO ]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-26 18:19:17,839 INFO ]: Start minimizeSevpa. Operand 98 states. [2018-06-26 18:19:17,852 INFO ]: Finished minimizeSevpa. Reduced states from 98 to 85. [2018-06-26 18:19:17,852 INFO ]: Start removeUnreachable. Operand 85 states. [2018-06-26 18:19:17,854 INFO ]: Finished removeUnreachable. Reduced from 85 states to 85 states and 165 transitions. [2018-06-26 18:19:17,854 INFO ]: Start accepts. Automaton has 85 states and 165 transitions. Word has length 38 [2018-06-26 18:19:17,854 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:19:17,854 INFO ]: Abstraction has 85 states and 165 transitions. [2018-06-26 18:19:17,854 INFO ]: Interpolant automaton has 5 states. [2018-06-26 18:19:17,854 INFO ]: Start isEmpty. Operand 85 states and 165 transitions. [2018-06-26 18:19:17,858 INFO ]: Finished isEmpty. Found accepting run of length 39 [2018-06-26 18:19:17,858 INFO ]: Found error trace [2018-06-26 18:19:17,858 INFO ]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:19:17,858 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:19:17,858 INFO ]: Analyzing trace with hash -1128164888, now seen corresponding path program 1 times [2018-06-26 18:19:17,858 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:19:17,858 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:19:17,859 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:17,859 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:17,859 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:17,864 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:19:17,864 INFO ]: Advancing trace checker [2018-06-26 18:19:17,864 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 (exit command is (exit), workingDir is null) [2018-06-26 18:19:17,882 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-26 18:19:17,938 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:17,943 INFO ]: Computing forward predicates... [2018-06-26 18:19:18,256 WARN ]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-26 18:19:18,367 INFO ]: Checked inductivity of 87 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-06-26 18:19:18,391 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:19:18,391 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-06-26 18:19:18,391 INFO ]: Interpolant automaton has 10 states [2018-06-26 18:19:18,391 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-26 18:19:18,391 INFO ]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-06-26 18:19:18,391 INFO ]: Start difference. First operand 85 states and 165 transitions. Second operand 10 states. [2018-06-26 18:19:20,457 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:19:20,457 INFO ]: Finished difference Result 236 states and 692 transitions. [2018-06-26 18:19:20,458 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-06-26 18:19:20,458 INFO ]: Start accepts. Automaton has 10 states. Word has length 38 [2018-06-26 18:19:20,458 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:19:20,464 INFO ]: With dead ends: 236 [2018-06-26 18:19:20,464 INFO ]: Without dead ends: 207 [2018-06-26 18:19:20,464 INFO ]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=770, Unknown=0, NotChecked=0, Total=992 [2018-06-26 18:19:20,464 INFO ]: Start minimizeSevpa. Operand 207 states. [2018-06-26 18:19:20,506 INFO ]: Finished minimizeSevpa. Reduced states from 207 to 143. [2018-06-26 18:19:20,506 INFO ]: Start removeUnreachable. Operand 143 states. [2018-06-26 18:19:20,514 INFO ]: Finished removeUnreachable. Reduced from 143 states to 143 states and 371 transitions. [2018-06-26 18:19:20,514 INFO ]: Start accepts. Automaton has 143 states and 371 transitions. Word has length 38 [2018-06-26 18:19:20,514 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:19:20,514 INFO ]: Abstraction has 143 states and 371 transitions. [2018-06-26 18:19:20,514 INFO ]: Interpolant automaton has 10 states. [2018-06-26 18:19:20,514 INFO ]: Start isEmpty. Operand 143 states and 371 transitions. [2018-06-26 18:19:20,523 INFO ]: Finished isEmpty. Found accepting run of length 89 [2018-06-26 18:19:20,524 INFO ]: Found error trace [2018-06-26 18:19:20,524 INFO ]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2018-06-26 18:19:20,524 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:19:20,524 INFO ]: Analyzing trace with hash -1493441790, now seen corresponding path program 1 times [2018-06-26 18:19:20,524 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:19:20,524 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:19:20,525 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:20,525 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:20,525 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:20,543 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:19:20,543 INFO ]: Advancing trace checker [2018-06-26 18:19:20,543 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 [2018-06-26 18:19:20,557 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:20,650 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:20,659 INFO ]: Computing forward predicates... [2018-06-26 18:19:21,074 INFO ]: Checked inductivity of 534 backedges. 139 proven. 54 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2018-06-26 18:19:21,106 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:19:21,106 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-06-26 18:19:21,106 INFO ]: Interpolant automaton has 8 states [2018-06-26 18:19:21,106 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-26 18:19:21,107 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-26 18:19:21,107 INFO ]: Start difference. First operand 143 states and 371 transitions. Second operand 8 states. [2018-06-26 18:19:21,701 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:19:21,701 INFO ]: Finished difference Result 333 states and 1019 transitions. [2018-06-26 18:19:21,701 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-06-26 18:19:21,701 INFO ]: Start accepts. Automaton has 8 states. Word has length 88 [2018-06-26 18:19:21,702 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:19:21,718 INFO ]: With dead ends: 333 [2018-06-26 18:19:21,718 INFO ]: Without dead ends: 333 [2018-06-26 18:19:21,718 INFO ]: 0 DeclaredPredicates, 109 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2018-06-26 18:19:21,719 INFO ]: Start minimizeSevpa. Operand 333 states. [2018-06-26 18:19:21,770 INFO ]: Finished minimizeSevpa. Reduced states from 333 to 237. [2018-06-26 18:19:21,770 INFO ]: Start removeUnreachable. Operand 237 states. [2018-06-26 18:19:21,776 INFO ]: Finished removeUnreachable. Reduced from 237 states to 237 states and 687 transitions. [2018-06-26 18:19:21,776 INFO ]: Start accepts. Automaton has 237 states and 687 transitions. Word has length 88 [2018-06-26 18:19:21,776 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:19:21,776 INFO ]: Abstraction has 237 states and 687 transitions. [2018-06-26 18:19:21,776 INFO ]: Interpolant automaton has 8 states. [2018-06-26 18:19:21,776 INFO ]: Start isEmpty. Operand 237 states and 687 transitions. [2018-06-26 18:19:21,791 INFO ]: Finished isEmpty. Found accepting run of length 114 [2018-06-26 18:19:21,791 INFO ]: Found error trace [2018-06-26 18:19:21,791 INFO ]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 6, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2018-06-26 18:19:21,791 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:19:21,791 INFO ]: Analyzing trace with hash 1077608408, now seen corresponding path program 2 times [2018-06-26 18:19:21,791 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:19:21,791 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:19:21,793 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:21,793 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:19:21,793 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:19:21,801 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:19:21,801 INFO ]: Advancing trace checker [2018-06-26 18:19:21,801 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-06-26 18:19:21,816 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-26 18:19:21,965 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-26 18:19:21,965 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:19:21,981 INFO ]: Computing forward predicates... [2018-06-26 18:19:22,045 INFO ]: Checked inductivity of 900 backedges. 468 proven. 13 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2018-06-26 18:19:22,064 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:19:22,064 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-06-26 18:19:22,065 INFO ]: Interpolant automaton has 7 states [2018-06-26 18:19:22,065 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-26 18:19:22,065 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-26 18:19:22,065 INFO ]: Start difference. First operand 237 states and 687 transitions. Second operand 7 states. [2018-06-26 18:19:22,659 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:19:22,659 INFO ]: Finished difference Result 133 states and 230 transitions. [2018-06-26 18:19:22,747 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-26 18:19:22,747 INFO ]: Start accepts. Automaton has 7 states. Word has length 113 [2018-06-26 18:19:22,748 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:19:22,748 INFO ]: With dead ends: 133 [2018-06-26 18:19:22,748 INFO ]: Without dead ends: 0 [2018-06-26 18:19:22,748 INFO ]: 0 DeclaredPredicates, 120 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-06-26 18:19:22,748 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 18:19:22,748 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 18:19:22,748 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 18:19:22,749 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 18:19:22,749 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 113 [2018-06-26 18:19:22,749 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:19:22,749 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 18:19:22,749 INFO ]: Interpolant automaton has 7 states. [2018-06-26 18:19:22,749 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 18:19:22,749 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 18:19:22,753 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:19:22,757 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:19:22 BasicIcfg [2018-06-26 18:19:22,757 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:19:22,758 INFO ]: Toolchain (without parser) took 12604.08 ms. Allocated memory was 303.0 MB in the beginning and 423.6 MB in the end (delta: 120.6 MB). Free memory was 254.5 MB in the beginning and 242.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 132.2 MB. Max. memory is 3.6 GB. [2018-06-26 18:19:22,762 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 303.0 MB. Free memory is still 268.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:19:22,762 INFO ]: ChcToBoogie took 62.20 ms. Allocated memory is still 303.0 MB. Free memory was 254.5 MB in the beginning and 252.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:19:22,764 INFO ]: Boogie Preprocessor took 47.51 ms. Allocated memory is still 303.0 MB. Free memory was 252.5 MB in the beginning and 250.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:19:22,764 INFO ]: RCFGBuilder took 398.24 ms. Allocated memory is still 303.0 MB. Free memory was 250.5 MB in the beginning and 238.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:19:22,772 INFO ]: BlockEncodingV2 took 209.33 ms. Allocated memory is still 303.0 MB. Free memory was 238.5 MB in the beginning and 226.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:19:22,773 INFO ]: TraceAbstraction took 11868.63 ms. Allocated memory was 303.0 MB in the beginning and 423.6 MB in the end (delta: 120.6 MB). Free memory was 226.5 MB in the beginning and 242.9 MB in the end (delta: -16.4 MB). Peak memory consumption was 104.2 MB. Max. memory is 3.6 GB. [2018-06-26 18:19:22,787 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 29 locations, 41 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 303.0 MB. Free memory is still 268.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 62.20 ms. Allocated memory is still 303.0 MB. Free memory was 254.5 MB in the beginning and 252.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 47.51 ms. Allocated memory is still 303.0 MB. Free memory was 252.5 MB in the beginning and 250.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 398.24 ms. Allocated memory is still 303.0 MB. Free memory was 250.5 MB in the beginning and 238.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 209.33 ms. Allocated memory is still 303.0 MB. Free memory was 238.5 MB in the beginning and 226.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 11868.63 ms. Allocated memory was 303.0 MB in the beginning and 423.6 MB in the end (delta: 120.6 MB). Free memory was 226.5 MB in the beginning and 242.9 MB in the end (delta: -16.4 MB). Peak memory consumption was 104.2 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, 15 locations, 1 error locations. SAFE Result, 11.8s OverallTime, 11 OverallIterations, 9 TraceHistogramMax, 7.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 442 SDtfs, 302 SDslu, 975 SDs, 0 SdLazy, 3286 SolverSat, 748 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 436 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237occurred in iteration=10, 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: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 306 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 405 NumberOfCodeBlocks, 405 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 392 ConstructedInterpolants, 0 QuantifiedInterpolants, 42813 SizeOfPredicates, 71 NumberOfNonLiveVariables, 3181 ConjunctsInSsa, 153 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 1620/1710 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/dotprod.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-19-22-919.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-19-22-919.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-19-22-919.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-19-22-919.csv Received shutdown request...