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/dotprod4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:14:51,587 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:14:51,588 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:14:51,601 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:14:51,601 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:14:51,602 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:14:51,606 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:14:51,608 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:14:51,610 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:14:51,610 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:14:51,612 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:14:51,612 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:14:51,613 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:14:51,614 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:14:51,615 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:14:51,616 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:14:51,618 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:14:51,620 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:14:51,621 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:14:51,622 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:14:51,623 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:14:51,626 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-24 21:14:51,630 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:14:51,631 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:14:51,631 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:14:51,632 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:14:51,632 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:14:51,633 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:14:51,633 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:14:51,648 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:14:51,648 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:14:51,649 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:14:51,649 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:14:51,650 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:14:51,650 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:14:51,650 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:14:51,650 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:14:51,650 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:14:51,651 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:14:51,651 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:14:51,651 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:14:51,651 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:14:51,651 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:14:51,652 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:14:51,652 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:14:51,652 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:14:51,652 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:14:51,652 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:14:51,652 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:14:51,653 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:14:51,654 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:14:51,654 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:14:51,703 INFO ]: Repository-Root is: /tmp [2018-06-24 21:14:51,723 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:14:51,729 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:14:51,731 INFO ]: Initializing SmtParser... [2018-06-24 21:14:51,731 INFO ]: SmtParser initialized [2018-06-24 21:14:51,731 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/dotprod4.smt2 [2018-06-24 21:14:51,732 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 21:14:51,822 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/dotprod4.smt2 unknown [2018-06-24 21:14:52,090 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/dotprod4.smt2 [2018-06-24 21:14:52,095 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:14:52,099 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:14:52,100 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:14:52,100 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:14:52,100 INFO ]: ChcToBoogie initialized [2018-06-24 21:14:52,103 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:14:52" (1/1) ... [2018-06-24 21:14:52,164 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:52 Unit [2018-06-24 21:14:52,164 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:14:52,165 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:14:52,165 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:14:52,165 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:14:52,185 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:52" (1/1) ... [2018-06-24 21:14:52,186 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:52" (1/1) ... [2018-06-24 21:14:52,196 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:52" (1/1) ... [2018-06-24 21:14:52,196 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:52" (1/1) ... [2018-06-24 21:14:52,208 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:52" (1/1) ... [2018-06-24 21:14:52,210 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:52" (1/1) ... [2018-06-24 21:14:52,211 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:52" (1/1) ... [2018-06-24 21:14:52,213 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:14:52,220 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:14:52,220 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:14:52,220 INFO ]: RCFGBuilder initialized [2018-06-24 21:14:52,221 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:52" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-24 21:14:52,236 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:14:52,236 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:14:52,236 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:14:52,236 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:14:52,237 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:14:52,237 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:14:52,623 INFO ]: Using library mode [2018-06-24 21:14:52,623 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:14:52 BoogieIcfgContainer [2018-06-24 21:14:52,623 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:14:52,624 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:14:52,624 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:14:52,625 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:14:52,625 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:14:52" (1/1) ... [2018-06-24 21:14:52,641 INFO ]: Initial Icfg 29 locations, 40 edges [2018-06-24 21:14:52,643 INFO ]: Using Remove infeasible edges [2018-06-24 21:14:52,643 INFO ]: Using Maximize final states [2018-06-24 21:14:52,644 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:14:52,644 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:14:52,646 INFO ]: Using Remove sink states [2018-06-24 21:14:52,646 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:14:52,646 INFO ]: Using Use SBE [2018-06-24 21:14:52,679 INFO ]: SBE split 1 edges [2018-06-24 21:14:52,685 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:14:52,686 INFO ]: 0 new accepting states [2018-06-24 21:14:52,839 INFO ]: Removed 31 edges and 11 locations by large block encoding [2018-06-24 21:14:52,841 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:14:52,842 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:14:52,842 INFO ]: 0 new accepting states [2018-06-24 21:14:52,842 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:14:52,843 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:14:52,843 INFO ]: Encoded RCFG 16 locations, 28 edges [2018-06-24 21:14:52,843 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:14:52 BasicIcfg [2018-06-24 21:14:52,843 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:14:52,845 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:14:52,845 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:14:52,849 INFO ]: TraceAbstraction initialized [2018-06-24 21:14:52,850 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:14:52" (1/4) ... [2018-06-24 21:14:52,850 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516227df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:14:52, skipping insertion in model container [2018-06-24 21:14:52,850 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:14:52" (2/4) ... [2018-06-24 21:14:52,851 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516227df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:14:52, skipping insertion in model container [2018-06-24 21:14:52,851 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:14:52" (3/4) ... [2018-06-24 21:14:52,851 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516227df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:14:52, skipping insertion in model container [2018-06-24 21:14:52,851 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:14:52" (4/4) ... [2018-06-24 21:14:52,853 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:14:52,863 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:14:52,870 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:14:52,906 INFO ]: Using default assertion order modulation [2018-06-24 21:14:52,907 INFO ]: Interprodecural is true [2018-06-24 21:14:52,907 INFO ]: Hoare is false [2018-06-24 21:14:52,907 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:14:52,907 INFO ]: Backedges is TWOTRACK [2018-06-24 21:14:52,907 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:14:52,907 INFO ]: Difference is false [2018-06-24 21:14:52,907 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:14:52,907 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:14:52,917 INFO ]: Start isEmpty. Operand 16 states. [2018-06-24 21:14:52,929 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:14:52,929 INFO ]: Found error trace [2018-06-24 21:14:52,933 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:14:52,933 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:52,938 INFO ]: Analyzing trace with hash 38669927, now seen corresponding path program 1 times [2018-06-24 21:14:52,941 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:52,941 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:52,978 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:52,978 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:52,978 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:53,015 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:53,069 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:14:53,071 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:14:53,072 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:14:53,073 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:14:53,083 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:14:53,083 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:14:53,086 INFO ]: Start difference. First operand 16 states. Second operand 3 states. [2018-06-24 21:14:53,454 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:53,455 INFO ]: Finished difference Result 25 states and 47 transitions. [2018-06-24 21:14:53,456 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:14:53,457 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:14:53,457 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:53,472 INFO ]: With dead ends: 25 [2018-06-24 21:14:53,472 INFO ]: Without dead ends: 25 [2018-06-24 21:14:53,474 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 21:14:53,502 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-24 21:14:53,537 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-24 21:14:53,538 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-24 21:14:53,540 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 47 transitions. [2018-06-24 21:14:53,542 INFO ]: Start accepts. Automaton has 25 states and 47 transitions. Word has length 5 [2018-06-24 21:14:53,543 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:53,543 INFO ]: Abstraction has 25 states and 47 transitions. [2018-06-24 21:14:53,543 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:14:53,543 INFO ]: Start isEmpty. Operand 25 states and 47 transitions. [2018-06-24 21:14:53,553 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:14:53,553 INFO ]: Found error trace [2018-06-24 21:14:53,553 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:14:53,553 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:53,554 INFO ]: Analyzing trace with hash 1201353075, now seen corresponding path program 1 times [2018-06-24 21:14:53,554 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:53,554 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:53,555 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:53,555 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:53,555 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:53,570 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:53,643 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:14:53,643 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:14:53,643 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:14:53,644 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:14:53,644 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:14:53,645 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:14:53,645 INFO ]: Start difference. First operand 25 states and 47 transitions. Second operand 3 states. [2018-06-24 21:14:53,681 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:53,681 INFO ]: Finished difference Result 27 states and 47 transitions. [2018-06-24 21:14:53,682 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:14:53,682 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-24 21:14:53,682 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:53,683 INFO ]: With dead ends: 27 [2018-06-24 21:14:53,683 INFO ]: Without dead ends: 25 [2018-06-24 21:14:53,684 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 21:14:53,684 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-24 21:14:53,689 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-24 21:14:53,689 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-24 21:14:53,691 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 43 transitions. [2018-06-24 21:14:53,691 INFO ]: Start accepts. Automaton has 25 states and 43 transitions. Word has length 6 [2018-06-24 21:14:53,691 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:53,691 INFO ]: Abstraction has 25 states and 43 transitions. [2018-06-24 21:14:53,691 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:14:53,691 INFO ]: Start isEmpty. Operand 25 states and 43 transitions. [2018-06-24 21:14:53,693 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:14:53,693 INFO ]: Found error trace [2018-06-24 21:14:53,693 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:14:53,693 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:53,693 INFO ]: Analyzing trace with hash 1203200117, now seen corresponding path program 1 times [2018-06-24 21:14:53,693 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:53,693 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:53,694 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:53,694 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:53,694 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:53,705 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:53,751 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:14:53,751 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:14:53,751 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-24 21:14:53,751 INFO ]: Interpolant automaton has 4 states [2018-06-24 21:14:53,751 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 21:14:53,751 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 21:14:53,751 INFO ]: Start difference. First operand 25 states and 43 transitions. Second operand 4 states. [2018-06-24 21:14:53,977 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:53,977 INFO ]: Finished difference Result 41 states and 82 transitions. [2018-06-24 21:14:53,977 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 21:14:53,977 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-24 21:14:53,977 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:53,982 INFO ]: With dead ends: 41 [2018-06-24 21:14:53,982 INFO ]: Without dead ends: 41 [2018-06-24 21:14:53,982 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:14:53,982 INFO ]: Start minimizeSevpa. Operand 41 states. [2018-06-24 21:14:53,995 INFO ]: Finished minimizeSevpa. Reduced states from 41 to 28. [2018-06-24 21:14:53,995 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-24 21:14:53,996 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 47 transitions. [2018-06-24 21:14:53,997 INFO ]: Start accepts. Automaton has 28 states and 47 transitions. Word has length 6 [2018-06-24 21:14:53,997 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:53,997 INFO ]: Abstraction has 28 states and 47 transitions. [2018-06-24 21:14:53,997 INFO ]: Interpolant automaton has 4 states. [2018-06-24 21:14:53,997 INFO ]: Start isEmpty. Operand 28 states and 47 transitions. [2018-06-24 21:14:53,999 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-24 21:14:53,999 INFO ]: Found error trace [2018-06-24 21:14:53,999 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:14:53,999 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:53,999 INFO ]: Analyzing trace with hash 126186444, now seen corresponding path program 1 times [2018-06-24 21:14:53,999 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:53,999 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:54,001 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:54,001 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:54,001 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:54,016 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:54,055 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:14:54,055 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:14:54,055 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:14:54,055 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:14:54,055 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:14:54,055 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:14:54,055 INFO ]: Start difference. First operand 28 states and 47 transitions. Second operand 3 states. [2018-06-24 21:14:54,249 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:54,249 INFO ]: Finished difference Result 38 states and 59 transitions. [2018-06-24 21:14:54,249 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:14:54,250 INFO ]: Start accepts. Automaton has 3 states. Word has length 11 [2018-06-24 21:14:54,250 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:54,251 INFO ]: With dead ends: 38 [2018-06-24 21:14:54,251 INFO ]: Without dead ends: 38 [2018-06-24 21:14:54,251 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 21:14:54,251 INFO ]: Start minimizeSevpa. Operand 38 states. [2018-06-24 21:14:54,256 INFO ]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-06-24 21:14:54,257 INFO ]: Start removeUnreachable. Operand 38 states. [2018-06-24 21:14:54,258 INFO ]: Finished removeUnreachable. Reduced from 38 states to 38 states and 59 transitions. [2018-06-24 21:14:54,258 INFO ]: Start accepts. Automaton has 38 states and 59 transitions. Word has length 11 [2018-06-24 21:14:54,258 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:54,258 INFO ]: Abstraction has 38 states and 59 transitions. [2018-06-24 21:14:54,258 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:14:54,258 INFO ]: Start isEmpty. Operand 38 states and 59 transitions. [2018-06-24 21:14:54,262 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-24 21:14:54,262 INFO ]: Found error trace [2018-06-24 21:14:54,262 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:14:54,262 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:54,262 INFO ]: Analyzing trace with hash 1695440583, now seen corresponding path program 1 times [2018-06-24 21:14:54,262 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:54,262 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:54,263 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:54,263 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:54,263 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:54,285 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:54,355 INFO ]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:14:54,356 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:14:54,356 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:14:54,356 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:14:54,356 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:14:54,356 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:14:54,356 INFO ]: Start difference. First operand 38 states and 59 transitions. Second operand 3 states. [2018-06-24 21:14:54,406 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:54,407 INFO ]: Finished difference Result 49 states and 77 transitions. [2018-06-24 21:14:54,407 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:14:54,407 INFO ]: Start accepts. Automaton has 3 states. Word has length 12 [2018-06-24 21:14:54,407 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:54,408 INFO ]: With dead ends: 49 [2018-06-24 21:14:54,408 INFO ]: Without dead ends: 49 [2018-06-24 21:14:54,408 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 21:14:54,409 INFO ]: Start minimizeSevpa. Operand 49 states. [2018-06-24 21:14:54,414 INFO ]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-06-24 21:14:54,414 INFO ]: Start removeUnreachable. Operand 49 states. [2018-06-24 21:14:54,416 INFO ]: Finished removeUnreachable. Reduced from 49 states to 49 states and 77 transitions. [2018-06-24 21:14:54,416 INFO ]: Start accepts. Automaton has 49 states and 77 transitions. Word has length 12 [2018-06-24 21:14:54,416 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:54,416 INFO ]: Abstraction has 49 states and 77 transitions. [2018-06-24 21:14:54,416 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:14:54,416 INFO ]: Start isEmpty. Operand 49 states and 77 transitions. [2018-06-24 21:14:54,418 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-24 21:14:54,418 INFO ]: Found error trace [2018-06-24 21:14:54,418 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:14:54,418 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:54,419 INFO ]: Analyzing trace with hash -678172726, now seen corresponding path program 1 times [2018-06-24 21:14:54,419 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:54,419 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:54,419 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:54,419 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:54,419 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:54,433 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:54,610 INFO ]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:14:54,610 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:14:54,610 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 21:14:54,620 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:54,661 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:54,668 INFO ]: Computing forward predicates... [2018-06-24 21:14:55,087 INFO ]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:14:55,110 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:14:55,135 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-24 21:14:55,135 INFO ]: Interpolant automaton has 14 states [2018-06-24 21:14:55,136 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-24 21:14:55,136 INFO ]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-06-24 21:14:55,136 INFO ]: Start difference. First operand 49 states and 77 transitions. Second operand 14 states. [2018-06-24 21:14:56,703 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:56,703 INFO ]: Finished difference Result 116 states and 292 transitions. [2018-06-24 21:14:56,704 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-06-24 21:14:56,704 INFO ]: Start accepts. Automaton has 14 states. Word has length 17 [2018-06-24 21:14:56,704 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:56,709 INFO ]: With dead ends: 116 [2018-06-24 21:14:56,709 INFO ]: Without dead ends: 116 [2018-06-24 21:14:56,710 INFO ]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2018-06-24 21:14:56,710 INFO ]: Start minimizeSevpa. Operand 116 states. [2018-06-24 21:14:56,751 INFO ]: Finished minimizeSevpa. Reduced states from 116 to 57. [2018-06-24 21:14:56,751 INFO ]: Start removeUnreachable. Operand 57 states. [2018-06-24 21:14:56,752 INFO ]: Finished removeUnreachable. Reduced from 57 states to 57 states and 95 transitions. [2018-06-24 21:14:56,752 INFO ]: Start accepts. Automaton has 57 states and 95 transitions. Word has length 17 [2018-06-24 21:14:56,753 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:56,753 INFO ]: Abstraction has 57 states and 95 transitions. [2018-06-24 21:14:56,753 INFO ]: Interpolant automaton has 14 states. [2018-06-24 21:14:56,753 INFO ]: Start isEmpty. Operand 57 states and 95 transitions. [2018-06-24 21:14:56,758 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-24 21:14:56,758 INFO ]: Found error trace [2018-06-24 21:14:56,759 INFO ]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:14:56,759 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:56,759 INFO ]: Analyzing trace with hash 431468593, now seen corresponding path program 1 times [2018-06-24 21:14:56,759 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:56,759 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:56,760 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:56,760 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:56,760 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:56,778 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:14:56,778 INFO ]: Advancing trace checker [2018-06-24 21:14:56,778 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 21:14:56,804 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:56,846 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:56,849 INFO ]: Computing forward predicates... [2018-06-24 21:14:56,874 INFO ]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-24 21:14:56,894 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:14:56,894 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:14:56,894 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:14:56,894 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:14:56,894 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:14:56,894 INFO ]: Start difference. First operand 57 states and 95 transitions. Second operand 3 states. [2018-06-24 21:14:56,955 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:56,955 INFO ]: Finished difference Result 68 states and 113 transitions. [2018-06-24 21:14:56,956 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:14:56,956 INFO ]: Start accepts. Automaton has 3 states. Word has length 23 [2018-06-24 21:14:56,956 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:56,957 INFO ]: With dead ends: 68 [2018-06-24 21:14:56,957 INFO ]: Without dead ends: 68 [2018-06-24 21:14:56,957 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 21 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 21:14:56,957 INFO ]: Start minimizeSevpa. Operand 68 states. [2018-06-24 21:14:56,968 INFO ]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-06-24 21:14:56,968 INFO ]: Start removeUnreachable. Operand 68 states. [2018-06-24 21:14:56,970 INFO ]: Finished removeUnreachable. Reduced from 68 states to 68 states and 113 transitions. [2018-06-24 21:14:56,970 INFO ]: Start accepts. Automaton has 68 states and 113 transitions. Word has length 23 [2018-06-24 21:14:56,970 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:56,970 INFO ]: Abstraction has 68 states and 113 transitions. [2018-06-24 21:14:56,970 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:14:56,970 INFO ]: Start isEmpty. Operand 68 states and 113 transitions. [2018-06-24 21:14:56,973 INFO ]: Finished isEmpty. Found accepting run of length 40 [2018-06-24 21:14:56,973 INFO ]: Found error trace [2018-06-24 21:14:56,973 INFO ]: trace histogram [7, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:14:56,973 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:14:56,973 INFO ]: Analyzing trace with hash -788775638, now seen corresponding path program 1 times [2018-06-24 21:14:56,973 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:14:56,973 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:14:56,974 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:56,974 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:56,974 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:14:56,982 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:14:56,982 INFO ]: Advancing trace checker [2018-06-24 21:14:56,982 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 21:14:56,993 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:14:57,050 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:14:57,058 INFO ]: Computing forward predicates... [2018-06-24 21:14:57,254 INFO ]: Checked inductivity of 78 backedges. 46 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-24 21:14:57,275 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:14:57,275 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-06-24 21:14:57,276 INFO ]: Interpolant automaton has 7 states [2018-06-24 21:14:57,276 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-24 21:14:57,276 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:14:57,276 INFO ]: Start difference. First operand 68 states and 113 transitions. Second operand 7 states. [2018-06-24 21:14:57,652 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:14:57,652 INFO ]: Finished difference Result 58 states and 85 transitions. [2018-06-24 21:14:57,653 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-24 21:14:57,653 INFO ]: Start accepts. Automaton has 7 states. Word has length 39 [2018-06-24 21:14:57,653 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:14:57,653 INFO ]: With dead ends: 58 [2018-06-24 21:14:57,653 INFO ]: Without dead ends: 0 [2018-06-24 21:14:57,653 INFO ]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-06-24 21:14:57,653 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:14:57,653 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:14:57,653 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:14:57,653 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:14:57,653 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2018-06-24 21:14:57,653 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:14:57,653 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:14:57,653 INFO ]: Interpolant automaton has 7 states. [2018-06-24 21:14:57,653 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:14:57,653 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:14:57,655 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:14:57,656 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:14:57 BasicIcfg [2018-06-24 21:14:57,656 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:14:57,657 INFO ]: Toolchain (without parser) took 5562.18 ms. Allocated memory was 309.9 MB in the beginning and 341.8 MB in the end (delta: 32.0 MB). Free memory was 263.4 MB in the beginning and 211.4 MB in the end (delta: 51.9 MB). Peak memory consumption was 83.9 MB. Max. memory is 3.6 GB. [2018-06-24 21:14:57,659 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.9 MB. Free memory is still 275.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:14:57,659 INFO ]: ChcToBoogie took 64.26 ms. Allocated memory is still 309.9 MB. Free memory was 262.4 MB in the beginning and 260.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:14:57,660 INFO ]: Boogie Preprocessor took 48.86 ms. Allocated memory is still 309.9 MB. Free memory was 260.4 MB in the beginning and 259.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-24 21:14:57,660 INFO ]: RCFGBuilder took 403.75 ms. Allocated memory is still 309.9 MB. Free memory was 259.4 MB in the beginning and 246.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:14:57,661 INFO ]: BlockEncodingV2 took 219.62 ms. Allocated memory is still 309.9 MB. Free memory was 246.4 MB in the beginning and 238.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:14:57,661 INFO ]: TraceAbstraction took 4811.78 ms. Allocated memory was 309.9 MB in the beginning and 341.8 MB in the end (delta: 32.0 MB). Free memory was 238.4 MB in the beginning and 211.4 MB in the end (delta: 26.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 3.6 GB. [2018-06-24 21:14:57,665 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 29 locations, 40 edges - StatisticsResult: Encoded RCFG 16 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 309.9 MB. Free memory is still 275.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 64.26 ms. Allocated memory is still 309.9 MB. Free memory was 262.4 MB in the beginning and 260.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 48.86 ms. Allocated memory is still 309.9 MB. Free memory was 260.4 MB in the beginning and 259.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 403.75 ms. Allocated memory is still 309.9 MB. Free memory was 259.4 MB in the beginning and 246.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 219.62 ms. Allocated memory is still 309.9 MB. Free memory was 246.4 MB in the beginning and 238.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4811.78 ms. Allocated memory was 309.9 MB in the beginning and 341.8 MB in the end (delta: 32.0 MB). Free memory was 238.4 MB in the beginning and 211.4 MB in the end (delta: 26.9 MB). Peak memory consumption was 58.9 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, 16 locations, 1 error locations. SAFE Result, 4.7s OverallTime, 8 OverallIterations, 7 TraceHistogramMax, 2.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 290 SDtfs, 143 SDslu, 582 SDs, 0 SdLazy, 827 SolverSat, 310 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 72 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 127 ConstructedInterpolants, 0 QuantifiedInterpolants, 4833 SizeOfPredicates, 14 NumberOfNonLiveVariables, 714 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 113/130 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/dotprod4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-14-57-677.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-14-57-677.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-14-57-677.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-14-57-677.csv Received shutdown request...