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/dotprod3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 09:24:12,079 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 09:24:12,081 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 09:24:12,092 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 09:24:12,093 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 09:24:12,094 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 09:24:12,095 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 09:24:12,097 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 09:24:12,098 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 09:24:12,099 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 09:24:12,100 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 09:24:12,100 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 09:24:12,101 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 09:24:12,102 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 09:24:12,103 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 09:24:12,104 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 09:24:12,105 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 09:24:12,107 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 09:24:12,109 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 09:24:12,110 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 09:24:12,111 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 09:24:12,113 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 09:24:12,114 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 09:24:12,114 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 09:24:12,115 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 09:24:12,116 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 09:24:12,116 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 09:24:12,117 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 09:24:12,118 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 09:24:12,119 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 09:24:12,119 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 09:24:12,120 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 09:24:12,120 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 09:24:12,121 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 09:24:12,122 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 09:24:12,122 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 09:24:12,136 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 09:24:12,136 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 09:24:12,137 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 09:24:12,137 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 09:24:12,138 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 09:24:12,138 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 09:24:12,138 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 09:24:12,139 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 09:24:12,139 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 09:24:12,139 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 09:24:12,140 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 09:24:12,140 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 09:24:12,140 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:24:12,140 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 09:24:12,141 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 09:24:12,141 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 09:24:12,141 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 09:24:12,141 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 09:24:12,142 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 09:24:12,142 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 09:24:12,142 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 09:24:12,143 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 09:24:12,144 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 09:24:12,189 INFO ]: Repository-Root is: /tmp [2018-06-25 09:24:12,208 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 09:24:12,212 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 09:24:12,214 INFO ]: Initializing SmtParser... [2018-06-25 09:24:12,214 INFO ]: SmtParser initialized [2018-06-25 09:24:12,214 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/dotprod3.smt2 [2018-06-25 09:24:12,216 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 09:24:12,308 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/dotprod3.smt2 unknown [2018-06-25 09:24:12,642 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/dotprod3.smt2 [2018-06-25 09:24:12,655 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 09:24:12,660 INFO ]: Walking toolchain with 4 elements. [2018-06-25 09:24:12,661 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 09:24:12,661 INFO ]: Initializing ChcToBoogie... [2018-06-25 09:24:12,661 INFO ]: ChcToBoogie initialized [2018-06-25 09:24:12,672 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:24:12" (1/1) ... [2018-06-25 09:24:12,728 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:12 Unit [2018-06-25 09:24:12,728 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 09:24:12,729 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 09:24:12,729 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 09:24:12,729 INFO ]: Boogie Preprocessor initialized [2018-06-25 09:24:12,751 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:12" (1/1) ... [2018-06-25 09:24:12,752 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:12" (1/1) ... [2018-06-25 09:24:12,759 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:12" (1/1) ... [2018-06-25 09:24:12,759 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:12" (1/1) ... [2018-06-25 09:24:12,762 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:12" (1/1) ... [2018-06-25 09:24:12,765 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:12" (1/1) ... [2018-06-25 09:24:12,766 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:12" (1/1) ... [2018-06-25 09:24:12,775 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 09:24:12,776 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 09:24:12,776 INFO ]: Initializing RCFGBuilder... [2018-06-25 09:24:12,776 INFO ]: RCFGBuilder initialized [2018-06-25 09:24:12,777 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:12" (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 09:24:12,796 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 09:24:12,796 INFO ]: Found specification of procedure gotoProc [2018-06-25 09:24:12,797 INFO ]: Found implementation of procedure gotoProc [2018-06-25 09:24:12,797 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 09:24:12,797 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 09:24:12,797 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 09:24:13,137 INFO ]: Using library mode [2018-06-25 09:24:13,138 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:24:13 BoogieIcfgContainer [2018-06-25 09:24:13,138 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 09:24:13,142 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 09:24:13,142 INFO ]: Initializing TraceAbstraction... [2018-06-25 09:24:13,145 INFO ]: TraceAbstraction initialized [2018-06-25 09:24:13,145 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:24:12" (1/3) ... [2018-06-25 09:24:13,146 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aafc8a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 09:24:13, skipping insertion in model container [2018-06-25 09:24:13,146 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:12" (2/3) ... [2018-06-25 09:24:13,146 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aafc8a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 09:24:13, skipping insertion in model container [2018-06-25 09:24:13,147 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:24:13" (3/3) ... [2018-06-25 09:24:13,148 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 09:24:13,157 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 09:24:13,165 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 09:24:13,206 INFO ]: Using default assertion order modulation [2018-06-25 09:24:13,207 INFO ]: Interprodecural is true [2018-06-25 09:24:13,207 INFO ]: Hoare is false [2018-06-25 09:24:13,207 INFO ]: Compute interpolants for FPandBP [2018-06-25 09:24:13,207 INFO ]: Backedges is TWOTRACK [2018-06-25 09:24:13,207 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 09:24:13,207 INFO ]: Difference is false [2018-06-25 09:24:13,207 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 09:24:13,207 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 09:24:13,219 INFO ]: Start isEmpty. Operand 28 states. [2018-06-25 09:24:13,230 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 09:24:13,230 INFO ]: Found error trace [2018-06-25 09:24:13,231 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:13,231 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:13,239 INFO ]: Analyzing trace with hash -851352358, now seen corresponding path program 1 times [2018-06-25 09:24:13,242 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:13,242 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:13,276 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:13,276 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:13,276 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:13,303 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:13,374 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:24:13,376 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:24:13,376 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:24:13,377 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:24:13,387 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:24:13,388 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:24:13,389 INFO ]: Start difference. First operand 28 states. Second operand 4 states. [2018-06-25 09:24:13,806 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:13,806 INFO ]: Finished difference Result 46 states and 63 transitions. [2018-06-25 09:24:13,807 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:24:13,808 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-25 09:24:13,808 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:13,817 INFO ]: With dead ends: 46 [2018-06-25 09:24:13,817 INFO ]: Without dead ends: 46 [2018-06-25 09:24:13,819 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 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 09:24:13,840 INFO ]: Start minimizeSevpa. Operand 46 states. [2018-06-25 09:24:13,869 INFO ]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-06-25 09:24:13,870 INFO ]: Start removeUnreachable. Operand 46 states. [2018-06-25 09:24:13,872 INFO ]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2018-06-25 09:24:13,873 INFO ]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 8 [2018-06-25 09:24:13,873 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:13,873 INFO ]: Abstraction has 46 states and 63 transitions. [2018-06-25 09:24:13,873 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:24:13,873 INFO ]: Start isEmpty. Operand 46 states and 63 transitions. [2018-06-25 09:24:13,876 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-25 09:24:13,876 INFO ]: Found error trace [2018-06-25 09:24:13,876 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:13,876 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:13,876 INFO ]: Analyzing trace with hash 1746947627, now seen corresponding path program 1 times [2018-06-25 09:24:13,876 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:13,876 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:13,877 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:13,877 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:13,877 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:13,892 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:14,036 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:24:14,036 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:24:14,036 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:24:14,038 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:24:14,038 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:24:14,038 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:24:14,038 INFO ]: Start difference. First operand 46 states and 63 transitions. Second operand 4 states. [2018-06-25 09:24:14,495 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:14,495 INFO ]: Finished difference Result 65 states and 90 transitions. [2018-06-25 09:24:14,495 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:24:14,495 INFO ]: Start accepts. Automaton has 4 states. Word has length 12 [2018-06-25 09:24:14,495 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:14,498 INFO ]: With dead ends: 65 [2018-06-25 09:24:14,498 INFO ]: Without dead ends: 65 [2018-06-25 09:24:14,499 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:24:14,499 INFO ]: Start minimizeSevpa. Operand 65 states. [2018-06-25 09:24:14,510 INFO ]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-06-25 09:24:14,510 INFO ]: Start removeUnreachable. Operand 65 states. [2018-06-25 09:24:14,513 INFO ]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2018-06-25 09:24:14,513 INFO ]: Start accepts. Automaton has 65 states and 90 transitions. Word has length 12 [2018-06-25 09:24:14,513 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:14,513 INFO ]: Abstraction has 65 states and 90 transitions. [2018-06-25 09:24:14,513 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:24:14,513 INFO ]: Start isEmpty. Operand 65 states and 90 transitions. [2018-06-25 09:24:14,514 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-25 09:24:14,514 INFO ]: Found error trace [2018-06-25 09:24:14,514 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:14,515 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:14,515 INFO ]: Analyzing trace with hash -1265059688, now seen corresponding path program 1 times [2018-06-25 09:24:14,515 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:14,515 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:14,516 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:14,516 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:14,516 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:14,529 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:14,611 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:24:14,611 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:24:14,611 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-25 09:24:14,611 INFO ]: Interpolant automaton has 5 states [2018-06-25 09:24:14,611 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 09:24:14,611 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:24:14,612 INFO ]: Start difference. First operand 65 states and 90 transitions. Second operand 5 states. [2018-06-25 09:24:14,825 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:14,825 INFO ]: Finished difference Result 120 states and 194 transitions. [2018-06-25 09:24:14,825 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-25 09:24:14,825 INFO ]: Start accepts. Automaton has 5 states. Word has length 12 [2018-06-25 09:24:14,825 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:14,831 INFO ]: With dead ends: 120 [2018-06-25 09:24:14,831 INFO ]: Without dead ends: 120 [2018-06-25 09:24:14,831 INFO ]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-25 09:24:14,831 INFO ]: Start minimizeSevpa. Operand 120 states. [2018-06-25 09:24:14,851 INFO ]: Finished minimizeSevpa. Reduced states from 120 to 73. [2018-06-25 09:24:14,851 INFO ]: Start removeUnreachable. Operand 73 states. [2018-06-25 09:24:14,852 INFO ]: Finished removeUnreachable. Reduced from 73 states to 73 states and 100 transitions. [2018-06-25 09:24:14,853 INFO ]: Start accepts. Automaton has 73 states and 100 transitions. Word has length 12 [2018-06-25 09:24:14,853 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:14,853 INFO ]: Abstraction has 73 states and 100 transitions. [2018-06-25 09:24:14,853 INFO ]: Interpolant automaton has 5 states. [2018-06-25 09:24:14,853 INFO ]: Start isEmpty. Operand 73 states and 100 transitions. [2018-06-25 09:24:14,861 INFO ]: Finished isEmpty. Found accepting run of length 35 [2018-06-25 09:24:14,861 INFO ]: Found error trace [2018-06-25 09:24:14,861 INFO ]: trace histogram [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 09:24:14,861 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:14,862 INFO ]: Analyzing trace with hash -721301563, now seen corresponding path program 1 times [2018-06-25 09:24:14,862 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:14,862 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:14,862 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:14,862 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:14,863 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:14,887 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:15,953 INFO ]: Checked inductivity of 21 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-25 09:24:15,954 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:24:15,954 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 09:24:15,969 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:16,029 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:16,039 INFO ]: Computing forward predicates... [2018-06-25 09:24:16,143 INFO ]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-25 09:24:16,169 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-25 09:24:16,169 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 14 [2018-06-25 09:24:16,170 INFO ]: Interpolant automaton has 14 states [2018-06-25 09:24:16,170 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-25 09:24:16,170 INFO ]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2018-06-25 09:24:16,170 INFO ]: Start difference. First operand 73 states and 100 transitions. Second operand 14 states. [2018-06-25 09:24:18,341 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:18,341 INFO ]: Finished difference Result 189 states and 419 transitions. [2018-06-25 09:24:18,342 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-06-25 09:24:18,342 INFO ]: Start accepts. Automaton has 14 states. Word has length 34 [2018-06-25 09:24:18,342 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:18,348 INFO ]: With dead ends: 189 [2018-06-25 09:24:18,348 INFO ]: Without dead ends: 152 [2018-06-25 09:24:18,349 INFO ]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2018-06-25 09:24:18,349 INFO ]: Start minimizeSevpa. Operand 152 states. [2018-06-25 09:24:18,386 INFO ]: Finished minimizeSevpa. Reduced states from 152 to 80. [2018-06-25 09:24:18,386 INFO ]: Start removeUnreachable. Operand 80 states. [2018-06-25 09:24:18,388 INFO ]: Finished removeUnreachable. Reduced from 80 states to 80 states and 114 transitions. [2018-06-25 09:24:18,388 INFO ]: Start accepts. Automaton has 80 states and 114 transitions. Word has length 34 [2018-06-25 09:24:18,388 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:18,388 INFO ]: Abstraction has 80 states and 114 transitions. [2018-06-25 09:24:18,388 INFO ]: Interpolant automaton has 14 states. [2018-06-25 09:24:18,388 INFO ]: Start isEmpty. Operand 80 states and 114 transitions. [2018-06-25 09:24:18,397 INFO ]: Finished isEmpty. Found accepting run of length 39 [2018-06-25 09:24:18,397 INFO ]: Found error trace [2018-06-25 09:24:18,397 INFO ]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:18,397 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:18,398 INFO ]: Analyzing trace with hash -1142788906, now seen corresponding path program 1 times [2018-06-25 09:24:18,398 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:18,398 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:18,398 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:18,398 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:18,398 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:18,416 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:18,528 INFO ]: Checked inductivity of 28 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-25 09:24:18,528 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:24:18,528 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 09:24:18,542 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:18,578 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:18,581 INFO ]: Computing forward predicates... [2018-06-25 09:24:18,586 INFO ]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-25 09:24:18,609 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-25 09:24:18,609 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2018-06-25 09:24:18,609 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:24:18,609 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:24:18,609 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:24:18,610 INFO ]: Start difference. First operand 80 states and 114 transitions. Second operand 4 states. [2018-06-25 09:24:18,714 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:18,714 INFO ]: Finished difference Result 99 states and 141 transitions. [2018-06-25 09:24:18,715 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:24:18,715 INFO ]: Start accepts. Automaton has 4 states. Word has length 38 [2018-06-25 09:24:18,715 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:18,716 INFO ]: With dead ends: 99 [2018-06-25 09:24:18,716 INFO ]: Without dead ends: 78 [2018-06-25 09:24:18,716 INFO ]: 0 DeclaredPredicates, 43 GetRequests, 40 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 09:24:18,716 INFO ]: Start minimizeSevpa. Operand 78 states. [2018-06-25 09:24:18,725 INFO ]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-06-25 09:24:18,725 INFO ]: Start removeUnreachable. Operand 78 states. [2018-06-25 09:24:18,726 INFO ]: Finished removeUnreachable. Reduced from 78 states to 78 states and 108 transitions. [2018-06-25 09:24:18,726 INFO ]: Start accepts. Automaton has 78 states and 108 transitions. Word has length 38 [2018-06-25 09:24:18,727 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:18,727 INFO ]: Abstraction has 78 states and 108 transitions. [2018-06-25 09:24:18,727 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:24:18,727 INFO ]: Start isEmpty. Operand 78 states and 108 transitions. [2018-06-25 09:24:18,729 INFO ]: Finished isEmpty. Found accepting run of length 43 [2018-06-25 09:24:18,729 INFO ]: Found error trace [2018-06-25 09:24:18,729 INFO ]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:18,729 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:18,729 INFO ]: Analyzing trace with hash 1655980003, now seen corresponding path program 1 times [2018-06-25 09:24:18,729 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:18,729 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:18,730 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:18,730 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:18,730 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:18,738 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-25 09:24:18,738 INFO ]: Advancing trace checker [2018-06-25 09:24:18,739 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 09:24:18,761 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:18,791 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:18,794 INFO ]: Computing forward predicates... [2018-06-25 09:24:18,806 INFO ]: Checked inductivity of 45 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-25 09:24:18,838 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:24:18,838 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:24:18,838 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:24:18,838 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:24:18,838 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:24:18,838 INFO ]: Start difference. First operand 78 states and 108 transitions. Second operand 4 states. [2018-06-25 09:24:18,915 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:18,915 INFO ]: Finished difference Result 104 states and 142 transitions. [2018-06-25 09:24:18,915 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:24:18,915 INFO ]: Start accepts. Automaton has 4 states. Word has length 42 [2018-06-25 09:24:18,915 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:18,916 INFO ]: With dead ends: 104 [2018-06-25 09:24:18,916 INFO ]: Without dead ends: 104 [2018-06-25 09:24:18,917 INFO ]: 0 DeclaredPredicates, 43 GetRequests, 40 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 09:24:18,917 INFO ]: Start minimizeSevpa. Operand 104 states. [2018-06-25 09:24:18,926 INFO ]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-06-25 09:24:18,926 INFO ]: Start removeUnreachable. Operand 104 states. [2018-06-25 09:24:18,928 INFO ]: Finished removeUnreachable. Reduced from 104 states to 104 states and 142 transitions. [2018-06-25 09:24:18,928 INFO ]: Start accepts. Automaton has 104 states and 142 transitions. Word has length 42 [2018-06-25 09:24:18,928 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:18,928 INFO ]: Abstraction has 104 states and 142 transitions. [2018-06-25 09:24:18,928 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:24:18,928 INFO ]: Start isEmpty. Operand 104 states and 142 transitions. [2018-06-25 09:24:18,932 INFO ]: Finished isEmpty. Found accepting run of length 70 [2018-06-25 09:24:18,932 INFO ]: Found error trace [2018-06-25 09:24:18,932 INFO ]: trace histogram [6, 6, 6, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:18,932 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:18,932 INFO ]: Analyzing trace with hash 415004872, now seen corresponding path program 1 times [2018-06-25 09:24:18,932 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:18,932 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:18,933 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:18,933 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:18,933 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:18,945 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:19,028 INFO ]: Checked inductivity of 116 backedges. 37 proven. 8 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-06-25 09:24:19,028 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:24:19,028 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 09:24:19,035 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:19,081 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:19,085 INFO ]: Computing forward predicates... [2018-06-25 09:24:19,094 INFO ]: Checked inductivity of 116 backedges. 70 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-06-25 09:24:19,115 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:24:19,115 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-25 09:24:19,116 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:24:19,116 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:24:19,116 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:24:19,116 INFO ]: Start difference. First operand 104 states and 142 transitions. Second operand 4 states. [2018-06-25 09:24:19,358 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:19,358 INFO ]: Finished difference Result 118 states and 160 transitions. [2018-06-25 09:24:19,359 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:24:19,359 INFO ]: Start accepts. Automaton has 4 states. Word has length 69 [2018-06-25 09:24:19,359 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:19,360 INFO ]: With dead ends: 118 [2018-06-25 09:24:19,360 INFO ]: Without dead ends: 99 [2018-06-25 09:24:19,361 INFO ]: 0 DeclaredPredicates, 74 GetRequests, 71 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 09:24:19,361 INFO ]: Start minimizeSevpa. Operand 99 states. [2018-06-25 09:24:19,369 INFO ]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-06-25 09:24:19,369 INFO ]: Start removeUnreachable. Operand 99 states. [2018-06-25 09:24:19,370 INFO ]: Finished removeUnreachable. Reduced from 99 states to 99 states and 132 transitions. [2018-06-25 09:24:19,370 INFO ]: Start accepts. Automaton has 99 states and 132 transitions. Word has length 69 [2018-06-25 09:24:19,370 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:19,370 INFO ]: Abstraction has 99 states and 132 transitions. [2018-06-25 09:24:19,370 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:24:19,370 INFO ]: Start isEmpty. Operand 99 states and 132 transitions. [2018-06-25 09:24:19,373 INFO ]: Finished isEmpty. Found accepting run of length 78 [2018-06-25 09:24:19,373 INFO ]: Found error trace [2018-06-25 09:24:19,373 INFO ]: trace histogram [7, 7, 7, 6, 6, 4, 4, 3, 3, 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] [2018-06-25 09:24:19,373 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:19,374 INFO ]: Analyzing trace with hash 2045719384, now seen corresponding path program 1 times [2018-06-25 09:24:19,374 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:19,374 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:19,374 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:19,374 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:19,374 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:19,381 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-25 09:24:19,381 INFO ]: Advancing trace checker [2018-06-25 09:24:19,381 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 09:24:19,397 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-25 09:24:19,462 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:19,475 INFO ]: Computing forward predicates... [2018-06-25 09:24:19,565 INFO ]: Checked inductivity of 160 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-06-25 09:24:19,585 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-25 09:24:19,585 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-06-25 09:24:19,585 INFO ]: Interpolant automaton has 8 states [2018-06-25 09:24:19,585 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 09:24:19,585 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-25 09:24:19,585 INFO ]: Start difference. First operand 99 states and 132 transitions. Second operand 8 states. [2018-06-25 09:24:20,360 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:20,360 INFO ]: Finished difference Result 166 states and 270 transitions. [2018-06-25 09:24:20,360 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-06-25 09:24:20,360 INFO ]: Start accepts. Automaton has 8 states. Word has length 77 [2018-06-25 09:24:20,361 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:20,363 INFO ]: With dead ends: 166 [2018-06-25 09:24:20,363 INFO ]: Without dead ends: 166 [2018-06-25 09:24:20,363 INFO ]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2018-06-25 09:24:20,364 INFO ]: Start minimizeSevpa. Operand 166 states. [2018-06-25 09:24:20,376 INFO ]: Finished minimizeSevpa. Reduced states from 166 to 103. [2018-06-25 09:24:20,376 INFO ]: Start removeUnreachable. Operand 103 states. [2018-06-25 09:24:20,378 INFO ]: Finished removeUnreachable. Reduced from 103 states to 103 states and 140 transitions. [2018-06-25 09:24:20,378 INFO ]: Start accepts. Automaton has 103 states and 140 transitions. Word has length 77 [2018-06-25 09:24:20,378 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:20,378 INFO ]: Abstraction has 103 states and 140 transitions. [2018-06-25 09:24:20,378 INFO ]: Interpolant automaton has 8 states. [2018-06-25 09:24:20,378 INFO ]: Start isEmpty. Operand 103 states and 140 transitions. [2018-06-25 09:24:20,383 INFO ]: Finished isEmpty. Found accepting run of length 100 [2018-06-25 09:24:20,383 INFO ]: Found error trace [2018-06-25 09:24:20,383 INFO ]: trace histogram [9, 9, 9, 8, 7, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:20,383 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:20,383 INFO ]: Analyzing trace with hash 1215117913, now seen corresponding path program 1 times [2018-06-25 09:24:20,383 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:20,383 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:20,384 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:20,384 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:20,384 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:20,392 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-25 09:24:20,392 INFO ]: Advancing trace checker [2018-06-25 09:24:20,392 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-25 09:24:20,410 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:20,476 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:20,481 INFO ]: Computing forward predicates... [2018-06-25 09:24:20,605 INFO ]: Checked inductivity of 276 backedges. 86 proven. 32 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2018-06-25 09:24:20,625 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-25 09:24:20,625 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-06-25 09:24:20,625 INFO ]: Interpolant automaton has 13 states [2018-06-25 09:24:20,625 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-25 09:24:20,625 INFO ]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-06-25 09:24:20,625 INFO ]: Start difference. First operand 103 states and 140 transitions. Second operand 13 states. [2018-06-25 09:24:23,250 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:23,250 INFO ]: Finished difference Result 399 states and 931 transitions. [2018-06-25 09:24:23,250 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-06-25 09:24:23,250 INFO ]: Start accepts. Automaton has 13 states. Word has length 99 [2018-06-25 09:24:23,251 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:23,259 INFO ]: With dead ends: 399 [2018-06-25 09:24:23,259 INFO ]: Without dead ends: 399 [2018-06-25 09:24:23,260 INFO ]: 0 DeclaredPredicates, 159 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=479, Invalid=2713, Unknown=0, NotChecked=0, Total=3192 [2018-06-25 09:24:23,261 INFO ]: Start minimizeSevpa. Operand 399 states. [2018-06-25 09:24:23,313 INFO ]: Finished minimizeSevpa. Reduced states from 399 to 183. [2018-06-25 09:24:23,313 INFO ]: Start removeUnreachable. Operand 183 states. [2018-06-25 09:24:23,318 INFO ]: Finished removeUnreachable. Reduced from 183 states to 183 states and 273 transitions. [2018-06-25 09:24:23,319 INFO ]: Start accepts. Automaton has 183 states and 273 transitions. Word has length 99 [2018-06-25 09:24:23,319 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:23,319 INFO ]: Abstraction has 183 states and 273 transitions. [2018-06-25 09:24:23,319 INFO ]: Interpolant automaton has 13 states. [2018-06-25 09:24:23,319 INFO ]: Start isEmpty. Operand 183 states and 273 transitions. [2018-06-25 09:24:23,330 INFO ]: Finished isEmpty. Found accepting run of length 143 [2018-06-25 09:24:23,330 INFO ]: Found error trace [2018-06-25 09:24:23,330 INFO ]: trace histogram [13, 13, 13, 11, 11, 7, 7, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-06-25 09:24:23,330 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:23,330 INFO ]: Analyzing trace with hash 2073848184, now seen corresponding path program 2 times [2018-06-25 09:24:23,330 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:23,330 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:23,331 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:23,331 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:23,331 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:23,340 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-25 09:24:23,340 INFO ]: Advancing trace checker [2018-06-25 09:24:23,340 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-06-25 09:24:23,356 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-25 09:24:23,457 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 09:24:23,457 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:23,474 INFO ]: Computing forward predicates... [2018-06-25 09:24:23,668 INFO ]: Checked inductivity of 611 backedges. 243 proven. 68 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-06-25 09:24:23,689 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-25 09:24:23,689 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-06-25 09:24:23,689 INFO ]: Interpolant automaton has 13 states [2018-06-25 09:24:23,689 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-25 09:24:23,689 INFO ]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-06-25 09:24:23,690 INFO ]: Start difference. First operand 183 states and 273 transitions. Second operand 13 states. [2018-06-25 09:24:25,485 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:25,485 INFO ]: Finished difference Result 436 states and 790 transitions. [2018-06-25 09:24:25,485 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-06-25 09:24:25,485 INFO ]: Start accepts. Automaton has 13 states. Word has length 142 [2018-06-25 09:24:25,486 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:25,492 INFO ]: With dead ends: 436 [2018-06-25 09:24:25,492 INFO ]: Without dead ends: 436 [2018-06-25 09:24:25,493 INFO ]: 0 DeclaredPredicates, 187 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=334, Invalid=2018, Unknown=0, NotChecked=0, Total=2352 [2018-06-25 09:24:25,494 INFO ]: Start minimizeSevpa. Operand 436 states. [2018-06-25 09:24:25,518 INFO ]: Finished minimizeSevpa. Reduced states from 436 to 254. [2018-06-25 09:24:25,518 INFO ]: Start removeUnreachable. Operand 254 states. [2018-06-25 09:24:25,522 INFO ]: Finished removeUnreachable. Reduced from 254 states to 254 states and 388 transitions. [2018-06-25 09:24:25,522 INFO ]: Start accepts. Automaton has 254 states and 388 transitions. Word has length 142 [2018-06-25 09:24:25,522 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:25,522 INFO ]: Abstraction has 254 states and 388 transitions. [2018-06-25 09:24:25,522 INFO ]: Interpolant automaton has 13 states. [2018-06-25 09:24:25,523 INFO ]: Start isEmpty. Operand 254 states and 388 transitions. [2018-06-25 09:24:25,529 INFO ]: Finished isEmpty. Found accepting run of length 165 [2018-06-25 09:24:25,530 INFO ]: Found error trace [2018-06-25 09:24:25,530 INFO ]: trace histogram [15, 15, 15, 13, 12, 8, 7, 7, 7, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:25,530 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:25,530 INFO ]: Analyzing trace with hash -397861595, now seen corresponding path program 2 times [2018-06-25 09:24:25,530 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:25,530 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:25,531 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:25,531 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 09:24:25,531 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:25,551 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-25 09:24:25,551 INFO ]: Advancing trace checker [2018-06-25 09:24:25,551 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-06-25 09:24:25,573 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-25 09:24:25,679 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 09:24:25,679 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:25,686 INFO ]: Computing forward predicates... [2018-06-25 09:24:26,060 INFO ]: Checked inductivity of 822 backedges. 81 proven. 101 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2018-06-25 09:24:26,080 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-25 09:24:26,080 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-06-25 09:24:26,080 INFO ]: Interpolant automaton has 10 states [2018-06-25 09:24:26,080 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-25 09:24:26,080 INFO ]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-06-25 09:24:26,080 INFO ]: Start difference. First operand 254 states and 388 transitions. Second operand 10 states. [2018-06-25 09:24:26,603 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:26,603 INFO ]: Finished difference Result 509 states and 935 transitions. [2018-06-25 09:24:26,603 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-06-25 09:24:26,603 INFO ]: Start accepts. Automaton has 10 states. Word has length 164 [2018-06-25 09:24:26,604 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:26,610 INFO ]: With dead ends: 509 [2018-06-25 09:24:26,610 INFO ]: Without dead ends: 509 [2018-06-25 09:24:26,611 INFO ]: 0 DeclaredPredicates, 186 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2018-06-25 09:24:26,611 INFO ]: Start minimizeSevpa. Operand 509 states. [2018-06-25 09:24:26,637 INFO ]: Finished minimizeSevpa. Reduced states from 509 to 313. [2018-06-25 09:24:26,637 INFO ]: Start removeUnreachable. Operand 313 states. [2018-06-25 09:24:26,641 INFO ]: Finished removeUnreachable. Reduced from 313 states to 313 states and 465 transitions. [2018-06-25 09:24:26,641 INFO ]: Start accepts. Automaton has 313 states and 465 transitions. Word has length 164 [2018-06-25 09:24:26,641 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:26,641 INFO ]: Abstraction has 313 states and 465 transitions. [2018-06-25 09:24:26,641 INFO ]: Interpolant automaton has 10 states. [2018-06-25 09:24:26,641 INFO ]: Start isEmpty. Operand 313 states and 465 transitions. [2018-06-25 09:24:26,652 INFO ]: Finished isEmpty. Found accepting run of length 165 [2018-06-25 09:24:26,653 INFO ]: Found error trace [2018-06-25 09:24:26,653 INFO ]: trace histogram [15, 15, 15, 13, 12, 8, 7, 7, 7, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:26,653 INFO ]: === Iteration 12 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:26,653 INFO ]: Analyzing trace with hash 692479339, now seen corresponding path program 3 times [2018-06-25 09:24:26,653 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:26,653 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:26,654 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:26,654 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 09:24:26,654 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:26,662 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-25 09:24:26,662 INFO ]: Advancing trace checker [2018-06-25 09:24:26,662 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-06-25 09:24:26,679 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-25 09:24:26,765 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-06-25 09:24:26,765 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:26,769 INFO ]: Computing forward predicates... [2018-06-25 09:24:26,862 INFO ]: Checked inductivity of 822 backedges. 130 proven. 33 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2018-06-25 09:24:26,882 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-25 09:24:26,906 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-06-25 09:24:26,906 INFO ]: Interpolant automaton has 12 states [2018-06-25 09:24:26,906 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-25 09:24:26,906 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-25 09:24:26,907 INFO ]: Start difference. First operand 313 states and 465 transitions. Second operand 12 states. [2018-06-25 09:24:28,160 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:28,160 INFO ]: Finished difference Result 610 states and 1121 transitions. [2018-06-25 09:24:28,160 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-06-25 09:24:28,160 INFO ]: Start accepts. Automaton has 12 states. Word has length 164 [2018-06-25 09:24:28,161 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:28,165 INFO ]: With dead ends: 610 [2018-06-25 09:24:28,165 INFO ]: Without dead ends: 475 [2018-06-25 09:24:28,165 INFO ]: 0 DeclaredPredicates, 181 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2018-06-25 09:24:28,165 INFO ]: Start minimizeSevpa. Operand 475 states. [2018-06-25 09:24:28,188 INFO ]: Finished minimizeSevpa. Reduced states from 475 to 286. [2018-06-25 09:24:28,188 INFO ]: Start removeUnreachable. Operand 286 states. [2018-06-25 09:24:28,192 INFO ]: Finished removeUnreachable. Reduced from 286 states to 286 states and 411 transitions. [2018-06-25 09:24:28,192 INFO ]: Start accepts. Automaton has 286 states and 411 transitions. Word has length 164 [2018-06-25 09:24:28,192 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:28,192 INFO ]: Abstraction has 286 states and 411 transitions. [2018-06-25 09:24:28,192 INFO ]: Interpolant automaton has 12 states. [2018-06-25 09:24:28,192 INFO ]: Start isEmpty. Operand 286 states and 411 transitions. [2018-06-25 09:24:28,199 INFO ]: Finished isEmpty. Found accepting run of length 230 [2018-06-25 09:24:28,199 INFO ]: Found error trace [2018-06-25 09:24:28,199 INFO ]: trace histogram [21, 21, 21, 18, 17, 11, 10, 10, 10, 7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:28,199 INFO ]: === Iteration 13 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:28,199 INFO ]: Analyzing trace with hash 1234782315, now seen corresponding path program 4 times [2018-06-25 09:24:28,199 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:28,199 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:28,200 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:28,200 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 09:24:28,200 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:28,211 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-25 09:24:28,211 INFO ]: Advancing trace checker [2018-06-25 09:24:28,211 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-06-25 09:24:28,231 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-25 09:24:28,382 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-25 09:24:28,382 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:28,394 INFO ]: Computing forward predicates... [2018-06-25 09:24:28,669 INFO ]: Checked inductivity of 1659 backedges. 846 proven. 123 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2018-06-25 09:24:28,688 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-25 09:24:28,688 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-06-25 09:24:28,688 INFO ]: Interpolant automaton has 12 states [2018-06-25 09:24:28,689 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-25 09:24:28,689 INFO ]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-06-25 09:24:28,689 INFO ]: Start difference. First operand 286 states and 411 transitions. Second operand 12 states. [2018-06-25 09:24:29,292 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:29,293 INFO ]: Finished difference Result 256 states and 337 transitions. [2018-06-25 09:24:29,293 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-06-25 09:24:29,293 INFO ]: Start accepts. Automaton has 12 states. Word has length 229 [2018-06-25 09:24:29,293 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:29,293 INFO ]: With dead ends: 256 [2018-06-25 09:24:29,293 INFO ]: Without dead ends: 0 [2018-06-25 09:24:29,293 INFO ]: 0 DeclaredPredicates, 253 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2018-06-25 09:24:29,293 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 09:24:29,293 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 09:24:29,293 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 09:24:29,293 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 09:24:29,293 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 229 [2018-06-25 09:24:29,293 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:29,293 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 09:24:29,293 INFO ]: Interpolant automaton has 12 states. [2018-06-25 09:24:29,293 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 09:24:29,293 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 09:24:29,297 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 09:24:29 BoogieIcfgContainer [2018-06-25 09:24:29,297 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 09:24:29,298 INFO ]: Toolchain (without parser) took 16642.28 ms. Allocated memory was 309.3 MB in the beginning and 466.6 MB in the end (delta: 157.3 MB). Free memory was 261.7 MB in the beginning and 323.4 MB in the end (delta: -61.7 MB). Peak memory consumption was 95.6 MB. Max. memory is 3.6 GB. [2018-06-25 09:24:29,299 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:24:29,299 INFO ]: ChcToBoogie took 68.24 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 259.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:24:29,300 INFO ]: Boogie Preprocessor took 46.28 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 257.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:24:29,300 INFO ]: RCFGBuilder took 361.95 ms. Allocated memory is still 309.3 MB. Free memory was 257.7 MB in the beginning and 245.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:24:29,300 INFO ]: TraceAbstraction took 16154.92 ms. Allocated memory was 309.3 MB in the beginning and 466.6 MB in the end (delta: 157.3 MB). Free memory was 245.7 MB in the beginning and 323.4 MB in the end (delta: -77.6 MB). Peak memory consumption was 79.7 MB. Max. memory is 3.6 GB. [2018-06-25 09:24:29,308 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 68.24 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 259.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 46.28 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 257.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 361.95 ms. Allocated memory is still 309.3 MB. Free memory was 257.7 MB in the beginning and 245.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 16154.92 ms. Allocated memory was 309.3 MB in the beginning and 466.6 MB in the end (delta: 157.3 MB). Free memory was 245.7 MB in the beginning and 323.4 MB in the end (delta: -77.6 MB). Peak memory consumption was 79.7 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. SAFE Result, 16.0s OverallTime, 13 OverallIterations, 21 TraceHistogramMax, 11.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1006 SDtfs, 962 SDslu, 3862 SDs, 0 SdLazy, 6503 SolverSat, 1514 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1289 GetRequests, 1037 SyntacticMatches, 1 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2002 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=313occurred in iteration=11, 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: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 965 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1231 NumberOfCodeBlocks, 1175 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1215 ConstructedInterpolants, 0 QuantifiedInterpolants, 224689 SizeOfPredicates, 62 NumberOfNonLiveVariables, 4773 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 4340/4725 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_09-24-29-320.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_09-24-29-320.csv Received shutdown request...