java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.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/a-dotprod.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 09:21:49,426 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 09:21:49,428 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 09:21:49,440 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 09:21:49,440 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 09:21:49,441 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 09:21:49,444 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 09:21:49,446 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 09:21:49,448 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 09:21:49,448 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 09:21:49,450 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 09:21:49,451 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 09:21:49,451 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 09:21:49,452 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 09:21:49,453 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 09:21:49,454 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 09:21:49,457 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 09:21:49,470 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 09:21:49,471 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 09:21:49,472 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 09:21:49,473 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 09:21:49,480 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 09:21:49,481 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 09:21:49,481 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 09:21:49,482 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 09:21:49,482 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 09:21:49,483 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 09:21:49,484 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 09:21:49,485 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 09:21:49,485 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 09:21:49,485 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 09:21:49,486 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 09:21:49,486 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 09:21:49,487 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 09:21:49,487 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 09:21:49,488 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 09:21:49,507 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 09:21:49,507 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 09:21:49,507 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 09:21:49,507 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 09:21:49,508 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 09:21:49,509 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 09:21:49,509 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 09:21:49,509 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 09:21:49,509 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 09:21:49,509 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 09:21:49,510 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 09:21:49,510 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 09:21:49,510 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:21:49,510 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 09:21:49,510 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 09:21:49,511 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 09:21:49,515 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 09:21:49,515 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 09:21:49,516 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 09:21:49,516 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 09:21:49,516 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 09:21:49,517 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 09:21:49,518 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 09:21:49,559 INFO ]: Repository-Root is: /tmp [2018-06-25 09:21:49,574 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 09:21:49,578 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 09:21:49,580 INFO ]: Initializing SmtParser... [2018-06-25 09:21:49,580 INFO ]: SmtParser initialized [2018-06-25 09:21:49,581 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/a-dotprod.smt2 [2018-06-25 09:21:49,582 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 [2018-06-25 09:21:49,677 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/a-dotprod.smt2 unknown [2018-06-25 09:21:49,982 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/a-dotprod.smt2 [2018-06-25 09:21:49,987 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 09:21:50,001 INFO ]: Walking toolchain with 4 elements. [2018-06-25 09:21:50,001 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 09:21:50,001 INFO ]: Initializing ChcToBoogie... [2018-06-25 09:21:50,001 INFO ]: ChcToBoogie initialized [2018-06-25 09:21:50,005 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:21:49" (1/1) ... [2018-06-25 09:21:50,060 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:50 Unit [2018-06-25 09:21:50,061 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 09:21:50,061 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 09:21:50,062 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 09:21:50,062 INFO ]: Boogie Preprocessor initialized [2018-06-25 09:21:50,083 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:50" (1/1) ... [2018-06-25 09:21:50,084 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:50" (1/1) ... [2018-06-25 09:21:50,092 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:50" (1/1) ... [2018-06-25 09:21:50,093 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:50" (1/1) ... [2018-06-25 09:21:50,097 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:50" (1/1) ... [2018-06-25 09:21:50,108 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:50" (1/1) ... [2018-06-25 09:21:50,109 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:50" (1/1) ... [2018-06-25 09:21:50,110 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 09:21:50,117 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 09:21:50,117 INFO ]: Initializing RCFGBuilder... [2018-06-25 09:21:50,117 INFO ]: RCFGBuilder initialized [2018-06-25 09:21:50,118 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:50" (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) [2018-06-25 09:21:50,135 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 09:21:50,135 INFO ]: Found specification of procedure gotoProc [2018-06-25 09:21:50,135 INFO ]: Found implementation of procedure gotoProc [2018-06-25 09:21:50,135 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 09:21:50,135 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 09:21:50,135 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 [2018-06-25 09:21:50,486 INFO ]: Using library mode [2018-06-25 09:21:50,486 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:21:50 BoogieIcfgContainer [2018-06-25 09:21:50,486 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 09:21:50,488 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 09:21:50,488 INFO ]: Initializing TraceAbstraction... [2018-06-25 09:21:50,491 INFO ]: TraceAbstraction initialized [2018-06-25 09:21:50,491 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:21:49" (1/3) ... [2018-06-25 09:21:50,491 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fd075d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 09:21:50, skipping insertion in model container [2018-06-25 09:21:50,492 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:50" (2/3) ... [2018-06-25 09:21:50,492 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fd075d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 09:21:50, skipping insertion in model container [2018-06-25 09:21:50,492 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:21:50" (3/3) ... [2018-06-25 09:21:50,494 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 09:21:50,502 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 09:21:50,510 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 09:21:50,542 INFO ]: Using default assertion order modulation [2018-06-25 09:21:50,543 INFO ]: Interprodecural is true [2018-06-25 09:21:50,543 INFO ]: Hoare is false [2018-06-25 09:21:50,543 INFO ]: Compute interpolants for FPandBP [2018-06-25 09:21:50,543 INFO ]: Backedges is TWOTRACK [2018-06-25 09:21:50,543 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 09:21:50,543 INFO ]: Difference is false [2018-06-25 09:21:50,543 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 09:21:50,543 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 09:21:50,555 INFO ]: Start isEmpty. Operand 29 states. [2018-06-25 09:21:50,567 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 09:21:50,567 INFO ]: Found error trace [2018-06-25 09:21:50,568 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:21:50,568 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:21:50,572 INFO ]: Analyzing trace with hash 2091904116, now seen corresponding path program 1 times [2018-06-25 09:21:50,573 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:21:50,574 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:21:50,605 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:50,605 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:50,605 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:50,629 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:50,664 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:21:50,665 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:21:50,666 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-25 09:21:50,667 INFO ]: Interpolant automaton has 2 states [2018-06-25 09:21:50,678 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-25 09:21:50,678 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:21:50,680 INFO ]: Start difference. First operand 29 states. Second operand 2 states. [2018-06-25 09:21:50,701 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:21:50,701 INFO ]: Finished difference Result 27 states and 37 transitions. [2018-06-25 09:21:50,701 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-25 09:21:50,704 INFO ]: Start accepts. Automaton has 2 states. Word has length 10 [2018-06-25 09:21:50,705 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:21:50,715 INFO ]: With dead ends: 27 [2018-06-25 09:21:50,715 INFO ]: Without dead ends: 27 [2018-06-25 09:21:50,717 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:21:50,730 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-25 09:21:50,750 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-25 09:21:50,751 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-25 09:21:50,754 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2018-06-25 09:21:50,756 INFO ]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 10 [2018-06-25 09:21:50,756 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:21:50,756 INFO ]: Abstraction has 27 states and 37 transitions. [2018-06-25 09:21:50,756 INFO ]: Interpolant automaton has 2 states. [2018-06-25 09:21:50,756 INFO ]: Start isEmpty. Operand 27 states and 37 transitions. [2018-06-25 09:21:50,760 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-25 09:21:50,760 INFO ]: Found error trace [2018-06-25 09:21:50,760 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:21:50,760 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:21:50,760 INFO ]: Analyzing trace with hash -660045942, now seen corresponding path program 1 times [2018-06-25 09:21:50,760 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:21:50,761 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:21:50,761 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:50,761 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:50,761 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:50,788 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:50,852 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:21:50,852 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:21:50,852 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:21:50,854 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:21:50,854 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:21:50,854 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:21:50,855 INFO ]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2018-06-25 09:21:51,670 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:21:51,670 INFO ]: Finished difference Result 47 states and 66 transitions. [2018-06-25 09:21:51,671 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:21:51,671 INFO ]: Start accepts. Automaton has 4 states. Word has length 12 [2018-06-25 09:21:51,671 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:21:51,673 INFO ]: With dead ends: 47 [2018-06-25 09:21:51,673 INFO ]: Without dead ends: 47 [2018-06-25 09:21:51,674 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 [2018-06-25 09:21:51,674 INFO ]: Start minimizeSevpa. Operand 47 states. [2018-06-25 09:21:51,683 INFO ]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-06-25 09:21:51,683 INFO ]: Start removeUnreachable. Operand 47 states. [2018-06-25 09:21:51,687 INFO ]: Finished removeUnreachable. Reduced from 47 states to 47 states and 66 transitions. [2018-06-25 09:21:51,687 INFO ]: Start accepts. Automaton has 47 states and 66 transitions. Word has length 12 [2018-06-25 09:21:51,687 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:21:51,687 INFO ]: Abstraction has 47 states and 66 transitions. [2018-06-25 09:21:51,687 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:21:51,687 INFO ]: Start isEmpty. Operand 47 states and 66 transitions. [2018-06-25 09:21:51,688 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-25 09:21:51,688 INFO ]: Found error trace [2018-06-25 09:21:51,689 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:21:51,689 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:21:51,689 INFO ]: Analyzing trace with hash 1620859359, now seen corresponding path program 1 times [2018-06-25 09:21:51,689 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:21:51,689 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:21:51,690 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:51,690 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:51,690 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:51,704 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:51,888 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:21:51,888 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:21:51,888 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-25 09:21:51,889 INFO ]: Interpolant automaton has 5 states [2018-06-25 09:21:51,889 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 09:21:51,889 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:21:51,889 INFO ]: Start difference. First operand 47 states and 66 transitions. Second operand 5 states. [2018-06-25 09:21:52,089 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:21:52,089 INFO ]: Finished difference Result 85 states and 164 transitions. [2018-06-25 09:21:52,090 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:21:52,090 INFO ]: Start accepts. Automaton has 5 states. Word has length 13 [2018-06-25 09:21:52,090 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:21:52,097 INFO ]: With dead ends: 85 [2018-06-25 09:21:52,097 INFO ]: Without dead ends: 85 [2018-06-25 09:21:52,097 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-25 09:21:52,097 INFO ]: Start minimizeSevpa. Operand 85 states. [2018-06-25 09:21:52,122 INFO ]: Finished minimizeSevpa. Reduced states from 85 to 52. [2018-06-25 09:21:52,123 INFO ]: Start removeUnreachable. Operand 52 states. [2018-06-25 09:21:52,124 INFO ]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2018-06-25 09:21:52,124 INFO ]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 13 [2018-06-25 09:21:52,125 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:21:52,125 INFO ]: Abstraction has 52 states and 72 transitions. [2018-06-25 09:21:52,125 INFO ]: Interpolant automaton has 5 states. [2018-06-25 09:21:52,125 INFO ]: Start isEmpty. Operand 52 states and 72 transitions. [2018-06-25 09:21:52,130 INFO ]: Finished isEmpty. Found accepting run of length 25 [2018-06-25 09:21:52,130 INFO ]: Found error trace [2018-06-25 09:21:52,130 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:21:52,130 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:21:52,130 INFO ]: Analyzing trace with hash -2021249290, now seen corresponding path program 1 times [2018-06-25 09:21:52,130 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:21:52,130 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:21:52,131 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:52,131 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:52,131 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:52,139 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:52,215 INFO ]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-25 09:21:52,216 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:21:52,216 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 [2018-06-25 09:21:52,257 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:52,308 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:52,317 INFO ]: Computing forward predicates... [2018-06-25 09:21:52,348 INFO ]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-25 09:21:52,377 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:21:52,377 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-25 09:21:52,378 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:21:52,378 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:21:52,378 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:21:52,378 INFO ]: Start difference. First operand 52 states and 72 transitions. Second operand 4 states. [2018-06-25 09:21:52,596 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:21:52,596 INFO ]: Finished difference Result 70 states and 98 transitions. [2018-06-25 09:21:52,625 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:21:52,625 INFO ]: Start accepts. Automaton has 4 states. Word has length 24 [2018-06-25 09:21:52,625 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:21:52,628 INFO ]: With dead ends: 70 [2018-06-25 09:21:52,628 INFO ]: Without dead ends: 70 [2018-06-25 09:21:52,628 INFO ]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:21:52,628 INFO ]: Start minimizeSevpa. Operand 70 states. [2018-06-25 09:21:52,640 INFO ]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-06-25 09:21:52,640 INFO ]: Start removeUnreachable. Operand 70 states. [2018-06-25 09:21:52,643 INFO ]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2018-06-25 09:21:52,643 INFO ]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 24 [2018-06-25 09:21:52,643 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:21:52,643 INFO ]: Abstraction has 70 states and 98 transitions. [2018-06-25 09:21:52,643 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:21:52,643 INFO ]: Start isEmpty. Operand 70 states and 98 transitions. [2018-06-25 09:21:52,652 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-25 09:21:52,652 INFO ]: Found error trace [2018-06-25 09:21:52,652 INFO ]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:21:52,652 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:21:52,653 INFO ]: Analyzing trace with hash -982134362, now seen corresponding path program 1 times [2018-06-25 09:21:52,653 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:21:52,653 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:21:52,653 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:52,653 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:52,653 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:52,700 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:53,193 INFO ]: Checked inductivity of 24 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-06-25 09:21:53,193 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:21:53,193 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 [2018-06-25 09:21:53,205 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:53,256 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:53,262 INFO ]: Computing forward predicates... [2018-06-25 09:21:53,399 INFO ]: Checked inductivity of 24 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-06-25 09:21:53,430 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:21:53,431 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2018-06-25 09:21:53,431 INFO ]: Interpolant automaton has 13 states [2018-06-25 09:21:53,431 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-25 09:21:53,431 INFO ]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2018-06-25 09:21:53,431 INFO ]: Start difference. First operand 70 states and 98 transitions. Second operand 13 states. [2018-06-25 09:21:55,436 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:21:55,436 INFO ]: Finished difference Result 176 states and 412 transitions. [2018-06-25 09:21:55,437 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-25 09:21:55,437 INFO ]: Start accepts. Automaton has 13 states. Word has length 37 [2018-06-25 09:21:55,437 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:21:55,444 INFO ]: With dead ends: 176 [2018-06-25 09:21:55,444 INFO ]: Without dead ends: 150 [2018-06-25 09:21:55,444 INFO ]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2018-06-25 09:21:55,445 INFO ]: Start minimizeSevpa. Operand 150 states. [2018-06-25 09:21:55,474 INFO ]: Finished minimizeSevpa. Reduced states from 150 to 94. [2018-06-25 09:21:55,474 INFO ]: Start removeUnreachable. Operand 94 states. [2018-06-25 09:21:55,476 INFO ]: Finished removeUnreachable. Reduced from 94 states to 94 states and 139 transitions. [2018-06-25 09:21:55,477 INFO ]: Start accepts. Automaton has 94 states and 139 transitions. Word has length 37 [2018-06-25 09:21:55,477 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:21:55,477 INFO ]: Abstraction has 94 states and 139 transitions. [2018-06-25 09:21:55,477 INFO ]: Interpolant automaton has 13 states. [2018-06-25 09:21:55,477 INFO ]: Start isEmpty. Operand 94 states and 139 transitions. [2018-06-25 09:21:55,480 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-25 09:21:55,481 INFO ]: Found error trace [2018-06-25 09:21:55,481 INFO ]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:21:55,481 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:21:55,481 INFO ]: Analyzing trace with hash 1729715146, now seen corresponding path program 1 times [2018-06-25 09:21:55,481 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:21:55,481 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:21:55,482 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:55,482 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:55,482 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:55,491 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-25 09:21:55,491 INFO ]: Advancing trace checker [2018-06-25 09:21:55,491 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 [2018-06-25 09:21:55,504 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:55,538 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:55,541 INFO ]: Computing forward predicates... [2018-06-25 09:21:55,577 INFO ]: Checked inductivity of 57 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-25 09:21:55,600 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:21:55,601 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:21:55,601 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:21:55,601 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:21:55,601 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:21:55,601 INFO ]: Start difference. First operand 94 states and 139 transitions. Second operand 4 states. [2018-06-25 09:21:55,697 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:21:55,697 INFO ]: Finished difference Result 121 states and 174 transitions. [2018-06-25 09:21:55,699 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:21:55,699 INFO ]: Start accepts. Automaton has 4 states. Word has length 49 [2018-06-25 09:21:55,699 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:21:55,701 INFO ]: With dead ends: 121 [2018-06-25 09:21:55,701 INFO ]: Without dead ends: 121 [2018-06-25 09:21:55,702 INFO ]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:21:55,702 INFO ]: Start minimizeSevpa. Operand 121 states. [2018-06-25 09:21:55,714 INFO ]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-06-25 09:21:55,714 INFO ]: Start removeUnreachable. Operand 121 states. [2018-06-25 09:21:55,717 INFO ]: Finished removeUnreachable. Reduced from 121 states to 121 states and 174 transitions. [2018-06-25 09:21:55,717 INFO ]: Start accepts. Automaton has 121 states and 174 transitions. Word has length 49 [2018-06-25 09:21:55,717 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:21:55,717 INFO ]: Abstraction has 121 states and 174 transitions. [2018-06-25 09:21:55,717 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:21:55,717 INFO ]: Start isEmpty. Operand 121 states and 174 transitions. [2018-06-25 09:21:55,724 INFO ]: Finished isEmpty. Found accepting run of length 90 [2018-06-25 09:21:55,724 INFO ]: Found error trace [2018-06-25 09:21:55,724 INFO ]: trace histogram [8, 8, 8, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:21:55,724 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:21:55,724 INFO ]: Analyzing trace with hash -863196590, now seen corresponding path program 1 times [2018-06-25 09:21:55,724 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:21:55,724 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:21:55,725 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:55,725 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:55,725 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:55,734 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-25 09:21:55,734 INFO ]: Advancing trace checker [2018-06-25 09:21:55,734 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) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-25 09:21:55,748 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:55,809 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:55,814 INFO ]: Computing forward predicates... [2018-06-25 09:21:55,964 INFO ]: Checked inductivity of 215 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-06-25 09:21:55,999 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-25 09:21:55,999 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-06-25 09:21:56,000 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:21:56,000 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:21:56,000 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:21:56,000 INFO ]: Start difference. First operand 121 states and 174 transitions. Second operand 4 states. [2018-06-25 09:21:56,106 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:21:56,106 INFO ]: Finished difference Result 174 states and 253 transitions. [2018-06-25 09:21:56,107 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:21:56,107 INFO ]: Start accepts. Automaton has 4 states. Word has length 89 [2018-06-25 09:21:56,107 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:21:56,110 INFO ]: With dead ends: 174 [2018-06-25 09:21:56,110 INFO ]: Without dead ends: 148 [2018-06-25 09:21:56,110 INFO ]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:21:56,110 INFO ]: Start minimizeSevpa. Operand 148 states. [2018-06-25 09:21:56,128 INFO ]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-06-25 09:21:56,129 INFO ]: Start removeUnreachable. Operand 148 states. [2018-06-25 09:21:56,131 INFO ]: Finished removeUnreachable. Reduced from 148 states to 148 states and 210 transitions. [2018-06-25 09:21:56,131 INFO ]: Start accepts. Automaton has 148 states and 210 transitions. Word has length 89 [2018-06-25 09:21:56,132 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:21:56,132 INFO ]: Abstraction has 148 states and 210 transitions. [2018-06-25 09:21:56,132 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:21:56,132 INFO ]: Start isEmpty. Operand 148 states and 210 transitions. [2018-06-25 09:21:56,138 INFO ]: Finished isEmpty. Found accepting run of length 82 [2018-06-25 09:21:56,138 INFO ]: Found error trace [2018-06-25 09:21:56,138 INFO ]: trace histogram [7, 7, 7, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:21:56,138 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:21:56,138 INFO ]: Analyzing trace with hash 757890933, now seen corresponding path program 1 times [2018-06-25 09:21:56,138 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:21:56,138 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:21:56,139 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:56,139 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:56,139 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:56,146 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-25 09:21:56,147 INFO ]: Advancing trace checker [2018-06-25 09:21:56,147 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) [2018-06-25 09:21:56,165 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-25 09:21:56,229 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:56,235 INFO ]: Computing forward predicates... [2018-06-25 09:21:56,777 INFO ]: Checked inductivity of 167 backedges. 91 proven. 19 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-06-25 09:21:56,797 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-25 09:21:56,797 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-06-25 09:21:56,798 INFO ]: Interpolant automaton has 12 states [2018-06-25 09:21:56,798 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-25 09:21:56,798 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-25 09:21:56,798 INFO ]: Start difference. First operand 148 states and 210 transitions. Second operand 12 states. [2018-06-25 09:21:57,648 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:21:57,648 INFO ]: Finished difference Result 249 states and 446 transitions. [2018-06-25 09:21:57,648 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-25 09:21:57,648 INFO ]: Start accepts. Automaton has 12 states. Word has length 81 [2018-06-25 09:21:57,648 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:21:57,653 INFO ]: With dead ends: 249 [2018-06-25 09:21:57,653 INFO ]: Without dead ends: 219 [2018-06-25 09:21:57,654 INFO ]: 0 DeclaredPredicates, 94 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2018-06-25 09:21:57,654 INFO ]: Start minimizeSevpa. Operand 219 states. [2018-06-25 09:21:57,671 INFO ]: Finished minimizeSevpa. Reduced states from 219 to 143. [2018-06-25 09:21:57,671 INFO ]: Start removeUnreachable. Operand 143 states. [2018-06-25 09:21:57,673 INFO ]: Finished removeUnreachable. Reduced from 143 states to 143 states and 200 transitions. [2018-06-25 09:21:57,673 INFO ]: Start accepts. Automaton has 143 states and 200 transitions. Word has length 81 [2018-06-25 09:21:57,673 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:21:57,673 INFO ]: Abstraction has 143 states and 200 transitions. [2018-06-25 09:21:57,673 INFO ]: Interpolant automaton has 12 states. [2018-06-25 09:21:57,673 INFO ]: Start isEmpty. Operand 143 states and 200 transitions. [2018-06-25 09:21:57,679 INFO ]: Finished isEmpty. Found accepting run of length 170 [2018-06-25 09:21:57,679 INFO ]: Found error trace [2018-06-25 09:21:57,680 INFO ]: trace histogram [15, 15, 15, 12, 11, 9, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:21:57,680 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:21:57,680 INFO ]: Analyzing trace with hash 863245074, now seen corresponding path program 1 times [2018-06-25 09:21:57,680 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:21:57,680 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:21:57,681 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:57,681 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:57,681 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:57,694 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:57,802 INFO ]: Checked inductivity of 805 backedges. 78 proven. 117 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2018-06-25 09:21:57,803 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:21:57,803 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 09:21:57,813 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:57,919 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:57,928 INFO ]: Computing forward predicates... [2018-06-25 09:21:57,953 INFO ]: Checked inductivity of 805 backedges. 403 proven. 5 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2018-06-25 09:21:57,985 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:21:57,985 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-25 09:21:57,986 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:21:57,986 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:21:57,986 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:21:57,986 INFO ]: Start difference. First operand 143 states and 200 transitions. Second operand 4 states. [2018-06-25 09:21:58,233 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:21:58,233 INFO ]: Finished difference Result 131 states and 171 transitions. [2018-06-25 09:21:58,234 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:21:58,234 INFO ]: Start accepts. Automaton has 4 states. Word has length 169 [2018-06-25 09:21:58,234 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:21:58,234 INFO ]: With dead ends: 131 [2018-06-25 09:21:58,234 INFO ]: Without dead ends: 0 [2018-06-25 09:21:58,234 INFO ]: 0 DeclaredPredicates, 174 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:21:58,234 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 09:21:58,235 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 09:21:58,235 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 09:21:58,235 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 09:21:58,235 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 169 [2018-06-25 09:21:58,235 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:21:58,235 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 09:21:58,235 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:21:58,235 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 09:21:58,235 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 09:21:58,240 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 09:21:58 BoogieIcfgContainer [2018-06-25 09:21:58,240 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 09:21:58,240 INFO ]: Toolchain (without parser) took 8253.38 ms. Allocated memory was 305.7 MB in the beginning and 380.6 MB in the end (delta: 75.0 MB). Free memory was 258.2 MB in the beginning and 228.7 MB in the end (delta: 29.5 MB). Peak memory consumption was 104.4 MB. Max. memory is 3.6 GB. [2018-06-25 09:21:58,242 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 305.7 MB. Free memory is still 270.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:21:58,242 INFO ]: ChcToBoogie took 59.97 ms. Allocated memory is still 305.7 MB. Free memory was 258.2 MB in the beginning and 256.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:21:58,243 INFO ]: Boogie Preprocessor took 49.01 ms. Allocated memory is still 305.7 MB. Free memory was 256.2 MB in the beginning and 254.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:21:58,243 INFO ]: RCFGBuilder took 369.79 ms. Allocated memory is still 305.7 MB. Free memory was 254.2 MB in the beginning and 242.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:21:58,244 INFO ]: TraceAbstraction took 7752.08 ms. Allocated memory was 305.7 MB in the beginning and 380.6 MB in the end (delta: 75.0 MB). Free memory was 242.2 MB in the beginning and 228.7 MB in the end (delta: 13.5 MB). Peak memory consumption was 88.5 MB. Max. memory is 3.6 GB. [2018-06-25 09:21:58,247 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 305.7 MB. Free memory is still 270.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 59.97 ms. Allocated memory is still 305.7 MB. Free memory was 258.2 MB in the beginning and 256.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 49.01 ms. Allocated memory is still 305.7 MB. Free memory was 256.2 MB in the beginning and 254.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 369.79 ms. Allocated memory is still 305.7 MB. Free memory was 254.2 MB in the beginning and 242.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 7752.08 ms. Allocated memory was 305.7 MB in the beginning and 380.6 MB in the end (delta: 75.0 MB). Free memory was 242.2 MB in the beginning and 228.7 MB in the end (delta: 13.5 MB). Peak memory consumption was 88.5 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, 29 locations, 1 error locations. SAFE Result, 7.7s OverallTime, 9 OverallIterations, 15 TraceHistogramMax, 4.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 488 SDtfs, 478 SDslu, 1470 SDs, 0 SdLazy, 1893 SolverSat, 384 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 510 GetRequests, 441 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred 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, 9 MinimizatonAttempts, 165 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 714 NumberOfCodeBlocks, 714 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 702 ConstructedInterpolants, 0 QuantifiedInterpolants, 97750 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1931 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 1960/2113 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/a-dotprod.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_09-21-58-256.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/a-dotprod.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_09-21-58-256.csv Received shutdown request...