java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-crafted/zero_sum5_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:29:31,605 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:29:31,607 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:29:31,623 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:29:31,624 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:29:31,625 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:29:31,626 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:29:31,628 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:29:31,630 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:29:31,631 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:29:31,632 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:29:31,632 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:29:31,633 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:29:31,634 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:29:31,636 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:29:31,637 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:29:31,638 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:29:31,642 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:29:31,648 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:29:31,651 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:29:31,653 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:29:31,657 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:29:31,659 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:29:31,663 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:29:31,663 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:29:31,664 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:29:31,665 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:29:31,666 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:29:31,667 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:29:31,668 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:29:31,670 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:29:31,671 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:29:31,672 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:29:31,673 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:29:31,674 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:29:31,674 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:29:31,675 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:29:31,675 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:29:31,678 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:29:31,678 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:29:31,706 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:29:31,707 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:29:31,709 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:29:31,709 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:29:31,709 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:29:31,710 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:29:31,710 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:29:31,710 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:29:31,710 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:29:31,710 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:29:31,711 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:29:31,711 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:29:31,711 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:29:31,712 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:29:31,712 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:29:31,712 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:29:31,712 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:29:31,712 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:29:31,713 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:29:31,713 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:29:31,713 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:29:31,713 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:29:31,713 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:29:31,714 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:29:31,715 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:29:31,715 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:29:31,716 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:29:31,716 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:29:31,716 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:29:31,754 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:29:31,766 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:29:31,772 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:29:31,774 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:29:31,774 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:29:31,775 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/zero_sum5_true-unreach-call.c [2019-05-23 11:29:31,838 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71abb558/f7d82abffccb4c7ebf677791cc1feb86/FLAGbbe6d4a35 [2019-05-23 11:29:32,260 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:29:32,261 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/zero_sum5_true-unreach-call.c [2019-05-23 11:29:32,267 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71abb558/f7d82abffccb4c7ebf677791cc1feb86/FLAGbbe6d4a35 [2019-05-23 11:29:32,641 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71abb558/f7d82abffccb4c7ebf677791cc1feb86 [2019-05-23 11:29:32,651 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:29:32,652 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:29:32,653 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:32,653 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:29:32,657 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:29:32,658 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:32" (1/1) ... [2019-05-23 11:29:32,662 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7ba85e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:32, skipping insertion in model container [2019-05-23 11:29:32,662 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:32" (1/1) ... [2019-05-23 11:29:32,670 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:29:32,697 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:29:32,913 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:32,917 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:29:32,947 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:32,974 INFO L146 ILogger]: Completed translation [2019-05-23 11:29:32,975 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:32 WrapperNode [2019-05-23 11:29:32,975 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:32,977 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:32,977 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:29:32,977 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:29:32,986 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:32" (1/1) ... [2019-05-23 11:29:33,001 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:32" (1/1) ... [2019-05-23 11:29:33,027 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:33,028 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:29:33,029 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:29:33,029 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:29:33,041 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:32" (1/1) ... [2019-05-23 11:29:33,041 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:32" (1/1) ... [2019-05-23 11:29:33,045 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:32" (1/1) ... [2019-05-23 11:29:33,053 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:32" (1/1) ... [2019-05-23 11:29:33,064 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:32" (1/1) ... [2019-05-23 11:29:33,159 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:32" (1/1) ... [2019-05-23 11:29:33,160 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:32" (1/1) ... [2019-05-23 11:29:33,163 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:29:33,164 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:29:33,164 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:29:33,164 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:29:33,165 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -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:4096 -smt2 -in -t:12000 [2019-05-23 11:29:33,227 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:29:33,227 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:29:33,227 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:29:33,227 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:29:33,227 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:29:33,825 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:29:33,825 INFO L146 ILogger]: Removed 16 assume(true) statements. [2019-05-23 11:29:33,827 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:33 BoogieIcfgContainer [2019-05-23 11:29:33,827 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:29:33,828 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:29:33,828 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:29:33,831 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:29:33,832 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:29:32" (1/3) ... [2019-05-23 11:29:33,833 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc01dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:33, skipping insertion in model container [2019-05-23 11:29:33,833 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:32" (2/3) ... [2019-05-23 11:29:33,834 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc01dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:33, skipping insertion in model container [2019-05-23 11:29:33,834 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:33" (3/3) ... [2019-05-23 11:29:33,837 INFO L146 ILogger]: Analyzing ICFG zero_sum5_true-unreach-call.c [2019-05-23 11:29:33,844 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:29:33,851 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:29:33,866 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:29:33,896 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:29:33,897 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:29:33,897 INFO L146 ILogger]: Hoare is true [2019-05-23 11:29:33,897 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:29:33,897 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:29:33,898 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:29:33,898 INFO L146 ILogger]: Difference is false [2019-05-23 11:29:33,898 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:29:33,898 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:29:33,916 INFO L146 ILogger]: Start isEmpty. Operand 104 states. [2019-05-23 11:29:33,924 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:29:33,925 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:33,926 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:33,927 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:33,932 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:33,932 INFO L146 ILogger]: Analyzing trace with hash 1229589119, now seen corresponding path program 1 times [2019-05-23 11:29:33,934 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:33,935 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:33,977 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:33,977 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:33,977 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:34,012 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:34,066 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:34,068 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:34,069 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:29:34,073 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:29:34,086 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:29:34,087 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:29:34,089 INFO L146 ILogger]: Start difference. First operand 104 states. Second operand 2 states. [2019-05-23 11:29:34,116 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:34,117 INFO L146 ILogger]: Finished difference Result 188 states and 227 transitions. [2019-05-23 11:29:34,117 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:29:34,120 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 37 [2019-05-23 11:29:34,120 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:34,130 INFO L146 ILogger]: With dead ends: 188 [2019-05-23 11:29:34,131 INFO L146 ILogger]: Without dead ends: 98 [2019-05-23 11:29:34,134 INFO L146 ILogger]: 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 [2019-05-23 11:29:34,154 INFO L146 ILogger]: Start minimizeSevpa. Operand 98 states. [2019-05-23 11:29:34,175 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 98 to 98. [2019-05-23 11:29:34,176 INFO L146 ILogger]: Start removeUnreachable. Operand 98 states. [2019-05-23 11:29:34,178 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2019-05-23 11:29:34,180 INFO L146 ILogger]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 37 [2019-05-23 11:29:34,180 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:34,180 INFO L146 ILogger]: Abstraction has 98 states and 107 transitions. [2019-05-23 11:29:34,180 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:29:34,181 INFO L146 ILogger]: Start isEmpty. Operand 98 states and 107 transitions. [2019-05-23 11:29:34,182 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:29:34,183 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:34,183 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:34,183 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:34,183 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:34,184 INFO L146 ILogger]: Analyzing trace with hash -53866580, now seen corresponding path program 1 times [2019-05-23 11:29:34,184 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:34,184 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:34,185 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:34,186 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:34,186 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:34,214 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:34,534 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:34,534 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:34,535 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:29:34,537 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:29:34,537 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:29:34,538 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:29:34,538 INFO L146 ILogger]: Start difference. First operand 98 states and 107 transitions. Second operand 5 states. [2019-05-23 11:29:34,902 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:34,902 INFO L146 ILogger]: Finished difference Result 143 states and 161 transitions. [2019-05-23 11:29:34,903 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:29:34,903 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 37 [2019-05-23 11:29:34,904 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:34,907 INFO L146 ILogger]: With dead ends: 143 [2019-05-23 11:29:34,907 INFO L146 ILogger]: Without dead ends: 137 [2019-05-23 11:29:34,908 INFO L146 ILogger]: 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 [2019-05-23 11:29:34,909 INFO L146 ILogger]: Start minimizeSevpa. Operand 137 states. [2019-05-23 11:29:34,919 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 137 to 117. [2019-05-23 11:29:34,919 INFO L146 ILogger]: Start removeUnreachable. Operand 117 states. [2019-05-23 11:29:34,921 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2019-05-23 11:29:34,922 INFO L146 ILogger]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 37 [2019-05-23 11:29:34,922 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:34,922 INFO L146 ILogger]: Abstraction has 117 states and 135 transitions. [2019-05-23 11:29:34,922 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:29:34,923 INFO L146 ILogger]: Start isEmpty. Operand 117 states and 135 transitions. [2019-05-23 11:29:34,924 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 45 [2019-05-23 11:29:34,924 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:34,925 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:34,925 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:34,925 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:34,925 INFO L146 ILogger]: Analyzing trace with hash 1447034660, now seen corresponding path program 1 times [2019-05-23 11:29:34,925 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:34,926 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:34,927 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:34,927 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:34,927 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:34,943 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:35,058 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:35,058 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:35,058 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:35,076 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:35,132 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:35,134 INFO L146 ILogger]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:29:35,143 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:35,264 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:29:35,295 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:29:35,295 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-05-23 11:29:35,296 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:29:35,296 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:29:35,297 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:35,297 INFO L146 ILogger]: Start difference. First operand 117 states and 135 transitions. Second operand 7 states. [2019-05-23 11:29:35,722 WARN L146 ILogger]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-05-23 11:29:36,116 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:36,117 INFO L146 ILogger]: Finished difference Result 255 states and 291 transitions. [2019-05-23 11:29:36,118 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:29:36,119 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 44 [2019-05-23 11:29:36,119 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:36,120 INFO L146 ILogger]: With dead ends: 255 [2019-05-23 11:29:36,120 INFO L146 ILogger]: Without dead ends: 160 [2019-05-23 11:29:36,121 INFO L146 ILogger]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:29:36,122 INFO L146 ILogger]: Start minimizeSevpa. Operand 160 states. [2019-05-23 11:29:36,133 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 160 to 115. [2019-05-23 11:29:36,133 INFO L146 ILogger]: Start removeUnreachable. Operand 115 states. [2019-05-23 11:29:36,134 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions. [2019-05-23 11:29:36,134 INFO L146 ILogger]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 44 [2019-05-23 11:29:36,134 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:36,135 INFO L146 ILogger]: Abstraction has 115 states and 124 transitions. [2019-05-23 11:29:36,135 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:29:36,135 INFO L146 ILogger]: Start isEmpty. Operand 115 states and 124 transitions. [2019-05-23 11:29:36,139 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 115 [2019-05-23 11:29:36,139 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:36,139 INFO L146 ILogger]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:36,139 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:36,140 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:36,140 INFO L146 ILogger]: Analyzing trace with hash 44606013, now seen corresponding path program 1 times [2019-05-23 11:29:36,140 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:36,140 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:36,141 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,141 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:36,142 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,169 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:36,280 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-05-23 11:29:36,280 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:36,280 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:29:36,301 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:36,351 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:36,352 INFO L146 ILogger]: Trace formula consists of 187 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:36,359 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:36,499 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-05-23 11:29:36,517 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:36,518 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:36,518 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:36,518 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:36,519 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:36,519 INFO L146 ILogger]: Start difference. First operand 115 states and 124 transitions. Second operand 9 states. [2019-05-23 11:29:37,245 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:37,246 INFO L146 ILogger]: Finished difference Result 261 states and 279 transitions. [2019-05-23 11:29:37,246 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:37,246 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 114 [2019-05-23 11:29:37,247 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:37,249 INFO L146 ILogger]: With dead ends: 261 [2019-05-23 11:29:37,249 INFO L146 ILogger]: Without dead ends: 167 [2019-05-23 11:29:37,251 INFO L146 ILogger]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:37,251 INFO L146 ILogger]: Start minimizeSevpa. Operand 167 states. [2019-05-23 11:29:37,260 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 167 to 122. [2019-05-23 11:29:37,261 INFO L146 ILogger]: Start removeUnreachable. Operand 122 states. [2019-05-23 11:29:37,261 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 122 states to 122 states and 131 transitions. [2019-05-23 11:29:37,262 INFO L146 ILogger]: Start accepts. Automaton has 122 states and 131 transitions. Word has length 114 [2019-05-23 11:29:37,262 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:37,262 INFO L146 ILogger]: Abstraction has 122 states and 131 transitions. [2019-05-23 11:29:37,262 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:37,263 INFO L146 ILogger]: Start isEmpty. Operand 122 states and 131 transitions. [2019-05-23 11:29:37,270 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 122 [2019-05-23 11:29:37,270 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:37,270 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:37,271 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:37,271 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:37,271 INFO L146 ILogger]: Analyzing trace with hash -1696096880, now seen corresponding path program 2 times [2019-05-23 11:29:37,272 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:37,272 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:37,276 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:37,276 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:37,276 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:37,329 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:37,467 INFO L146 ILogger]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-05-23 11:29:37,467 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:37,467 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:29:37,480 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:37,555 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:37,555 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:37,557 INFO L146 ILogger]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:37,570 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:37,690 INFO L146 ILogger]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-05-23 11:29:37,708 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:37,708 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:37,709 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:37,709 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:37,709 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:37,710 INFO L146 ILogger]: Start difference. First operand 122 states and 131 transitions. Second operand 9 states. [2019-05-23 11:29:38,061 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:38,062 INFO L146 ILogger]: Finished difference Result 254 states and 271 transitions. [2019-05-23 11:29:38,062 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:38,062 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 121 [2019-05-23 11:29:38,063 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:38,064 INFO L146 ILogger]: With dead ends: 254 [2019-05-23 11:29:38,065 INFO L146 ILogger]: Without dead ends: 169 [2019-05-23 11:29:38,066 INFO L146 ILogger]: 0 DeclaredPredicates, 129 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:38,067 INFO L146 ILogger]: Start minimizeSevpa. Operand 169 states. [2019-05-23 11:29:38,075 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 169 to 129. [2019-05-23 11:29:38,075 INFO L146 ILogger]: Start removeUnreachable. Operand 129 states. [2019-05-23 11:29:38,076 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 129 states to 129 states and 138 transitions. [2019-05-23 11:29:38,076 INFO L146 ILogger]: Start accepts. Automaton has 129 states and 138 transitions. Word has length 121 [2019-05-23 11:29:38,076 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:38,077 INFO L146 ILogger]: Abstraction has 129 states and 138 transitions. [2019-05-23 11:29:38,077 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:38,077 INFO L146 ILogger]: Start isEmpty. Operand 129 states and 138 transitions. [2019-05-23 11:29:38,079 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 129 [2019-05-23 11:29:38,079 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:38,079 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:38,079 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:38,080 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:38,080 INFO L146 ILogger]: Analyzing trace with hash 744381718, now seen corresponding path program 3 times [2019-05-23 11:29:38,080 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:38,080 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:38,081 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:38,081 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:38,081 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:38,103 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:38,440 INFO L146 ILogger]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:29:38,440 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:38,440 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:38,449 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:38,486 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:29:38,487 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:38,488 INFO L146 ILogger]: Trace formula consists of 176 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:38,492 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:38,602 INFO L146 ILogger]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:29:38,621 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:38,621 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:38,621 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:38,622 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:38,622 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:38,623 INFO L146 ILogger]: Start difference. First operand 129 states and 138 transitions. Second operand 9 states. [2019-05-23 11:29:39,026 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:39,027 INFO L146 ILogger]: Finished difference Result 247 states and 263 transitions. [2019-05-23 11:29:39,027 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:39,027 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 128 [2019-05-23 11:29:39,028 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:39,030 INFO L146 ILogger]: With dead ends: 247 [2019-05-23 11:29:39,030 INFO L146 ILogger]: Without dead ends: 171 [2019-05-23 11:29:39,031 INFO L146 ILogger]: 0 DeclaredPredicates, 136 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:39,031 INFO L146 ILogger]: Start minimizeSevpa. Operand 171 states. [2019-05-23 11:29:39,037 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 171 to 136. [2019-05-23 11:29:39,037 INFO L146 ILogger]: Start removeUnreachable. Operand 136 states. [2019-05-23 11:29:39,038 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 136 states to 136 states and 145 transitions. [2019-05-23 11:29:39,038 INFO L146 ILogger]: Start accepts. Automaton has 136 states and 145 transitions. Word has length 128 [2019-05-23 11:29:39,039 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:39,039 INFO L146 ILogger]: Abstraction has 136 states and 145 transitions. [2019-05-23 11:29:39,039 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:39,039 INFO L146 ILogger]: Start isEmpty. Operand 136 states and 145 transitions. [2019-05-23 11:29:39,040 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 136 [2019-05-23 11:29:39,041 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:39,041 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:39,041 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:39,041 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:39,042 INFO L146 ILogger]: Analyzing trace with hash -971171721, now seen corresponding path program 4 times [2019-05-23 11:29:39,042 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:39,042 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:39,042 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:39,043 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:39,043 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:39,063 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:39,171 INFO L146 ILogger]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-05-23 11:29:39,172 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:39,172 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:29:39,182 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:39,219 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:39,219 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:39,220 INFO L146 ILogger]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:39,223 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:39,388 INFO L146 ILogger]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-05-23 11:29:39,406 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:39,407 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:39,407 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:39,407 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:39,408 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:39,408 INFO L146 ILogger]: Start difference. First operand 136 states and 145 transitions. Second operand 9 states. [2019-05-23 11:29:39,724 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:39,724 INFO L146 ILogger]: Finished difference Result 224 states and 238 transitions. [2019-05-23 11:29:39,725 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:39,725 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 135 [2019-05-23 11:29:39,726 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:39,727 INFO L146 ILogger]: With dead ends: 224 [2019-05-23 11:29:39,728 INFO L146 ILogger]: Without dead ends: 173 [2019-05-23 11:29:39,729 INFO L146 ILogger]: 0 DeclaredPredicates, 143 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:39,730 INFO L146 ILogger]: Start minimizeSevpa. Operand 173 states. [2019-05-23 11:29:39,735 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 173 to 143. [2019-05-23 11:29:39,735 INFO L146 ILogger]: Start removeUnreachable. Operand 143 states. [2019-05-23 11:29:39,736 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 143 states to 143 states and 152 transitions. [2019-05-23 11:29:39,736 INFO L146 ILogger]: Start accepts. Automaton has 143 states and 152 transitions. Word has length 135 [2019-05-23 11:29:39,737 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:39,737 INFO L146 ILogger]: Abstraction has 143 states and 152 transitions. [2019-05-23 11:29:39,737 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:39,737 INFO L146 ILogger]: Start isEmpty. Operand 143 states and 152 transitions. [2019-05-23 11:29:39,738 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 143 [2019-05-23 11:29:39,739 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:39,739 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:39,739 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:39,739 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:39,740 INFO L146 ILogger]: Analyzing trace with hash -467417880, now seen corresponding path program 5 times [2019-05-23 11:29:39,740 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:39,740 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:39,741 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:39,741 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:39,741 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:39,759 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:40,214 INFO L146 ILogger]: Checked inductivity of 50 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-05-23 11:29:40,215 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:40,216 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:40,237 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:40,308 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-05-23 11:29:40,308 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:40,310 INFO L146 ILogger]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:40,313 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:40,540 INFO L146 ILogger]: Checked inductivity of 50 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-05-23 11:29:40,558 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:40,559 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:40,559 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:40,559 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:40,559 INFO L146 ILogger]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:40,560 INFO L146 ILogger]: Start difference. First operand 143 states and 152 transitions. Second operand 9 states. [2019-05-23 11:29:41,076 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:41,076 INFO L146 ILogger]: Finished difference Result 224 states and 238 transitions. [2019-05-23 11:29:41,076 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:29:41,076 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 142 [2019-05-23 11:29:41,077 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:41,077 INFO L146 ILogger]: With dead ends: 224 [2019-05-23 11:29:41,078 INFO L146 ILogger]: Without dead ends: 182 [2019-05-23 11:29:41,078 INFO L146 ILogger]: 0 DeclaredPredicates, 152 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:29:41,079 INFO L146 ILogger]: Start minimizeSevpa. Operand 182 states. [2019-05-23 11:29:41,084 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 182 to 157. [2019-05-23 11:29:41,084 INFO L146 ILogger]: Start removeUnreachable. Operand 157 states. [2019-05-23 11:29:41,085 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 157 states to 157 states and 166 transitions. [2019-05-23 11:29:41,085 INFO L146 ILogger]: Start accepts. Automaton has 157 states and 166 transitions. Word has length 142 [2019-05-23 11:29:41,086 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:41,086 INFO L146 ILogger]: Abstraction has 157 states and 166 transitions. [2019-05-23 11:29:41,086 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:41,086 INFO L146 ILogger]: Start isEmpty. Operand 157 states and 166 transitions. [2019-05-23 11:29:41,087 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 157 [2019-05-23 11:29:41,088 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:41,088 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:41,088 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:41,089 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:41,089 INFO L146 ILogger]: Analyzing trace with hash -640313368, now seen corresponding path program 6 times [2019-05-23 11:29:41,089 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:41,089 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:41,090 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:41,090 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:41,090 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:41,109 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:41,253 INFO L146 ILogger]: Checked inductivity of 66 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:29:41,254 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:41,254 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:29:41,265 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:29:41,308 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-05-23 11:29:41,308 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:41,311 INFO L146 ILogger]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:41,314 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:41,428 INFO L146 ILogger]: Checked inductivity of 66 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:29:41,447 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:41,448 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:41,448 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:41,448 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:41,449 INFO L146 ILogger]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:41,449 INFO L146 ILogger]: Start difference. First operand 157 states and 166 transitions. Second operand 9 states. [2019-05-23 11:29:41,783 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:41,783 INFO L146 ILogger]: Finished difference Result 226 states and 239 transitions. [2019-05-23 11:29:41,783 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:29:41,784 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 156 [2019-05-23 11:29:41,785 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:41,787 INFO L146 ILogger]: With dead ends: 226 [2019-05-23 11:29:41,787 INFO L146 ILogger]: Without dead ends: 186 [2019-05-23 11:29:41,787 INFO L146 ILogger]: 0 DeclaredPredicates, 166 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:29:41,792 INFO L146 ILogger]: Start minimizeSevpa. Operand 186 states. [2019-05-23 11:29:41,799 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 186 to 171. [2019-05-23 11:29:41,799 INFO L146 ILogger]: Start removeUnreachable. Operand 171 states. [2019-05-23 11:29:41,800 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 171 states to 171 states and 180 transitions. [2019-05-23 11:29:41,800 INFO L146 ILogger]: Start accepts. Automaton has 171 states and 180 transitions. Word has length 156 [2019-05-23 11:29:41,800 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:41,800 INFO L146 ILogger]: Abstraction has 171 states and 180 transitions. [2019-05-23 11:29:41,800 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:41,801 INFO L146 ILogger]: Start isEmpty. Operand 171 states and 180 transitions. [2019-05-23 11:29:41,802 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 171 [2019-05-23 11:29:41,802 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:41,802 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:41,804 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:41,804 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:41,804 INFO L146 ILogger]: Analyzing trace with hash -1138649816, now seen corresponding path program 7 times [2019-05-23 11:29:41,804 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:41,804 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:41,805 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:41,805 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:41,805 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:41,827 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:41,994 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:29:41,994 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:41,994 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:42,005 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:42,047 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:42,048 INFO L146 ILogger]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:42,050 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:42,112 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:29:42,131 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:42,131 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:42,132 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:42,132 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:42,132 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:42,133 INFO L146 ILogger]: Start difference. First operand 171 states and 180 transitions. Second operand 9 states. [2019-05-23 11:29:42,482 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:42,483 INFO L146 ILogger]: Finished difference Result 221 states and 232 transitions. [2019-05-23 11:29:42,483 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:42,483 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 170 [2019-05-23 11:29:42,484 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:42,486 INFO L146 ILogger]: With dead ends: 221 [2019-05-23 11:29:42,486 INFO L146 ILogger]: Without dead ends: 183 [2019-05-23 11:29:42,487 INFO L146 ILogger]: 0 DeclaredPredicates, 178 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:42,487 INFO L146 ILogger]: Start minimizeSevpa. Operand 183 states. [2019-05-23 11:29:42,492 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 183 to 178. [2019-05-23 11:29:42,492 INFO L146 ILogger]: Start removeUnreachable. Operand 178 states. [2019-05-23 11:29:42,492 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 178 states to 178 states and 187 transitions. [2019-05-23 11:29:42,493 INFO L146 ILogger]: Start accepts. Automaton has 178 states and 187 transitions. Word has length 170 [2019-05-23 11:29:42,493 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:42,493 INFO L146 ILogger]: Abstraction has 178 states and 187 transitions. [2019-05-23 11:29:42,493 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:42,494 INFO L146 ILogger]: Start isEmpty. Operand 178 states and 187 transitions. [2019-05-23 11:29:42,495 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 178 [2019-05-23 11:29:42,495 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:42,496 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:42,496 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:42,496 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:42,496 INFO L146 ILogger]: Analyzing trace with hash -1433990708, now seen corresponding path program 8 times [2019-05-23 11:29:42,496 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:42,497 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:42,497 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:42,498 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:42,498 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:42,561 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:43,661 WARN L146 ILogger]: Spent 146.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2019-05-23 11:29:44,044 WARN L146 ILogger]: Spent 160.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2019-05-23 11:29:44,309 WARN L146 ILogger]: Spent 148.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2019-05-23 11:29:46,877 WARN L146 ILogger]: Spent 149.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2019-05-23 11:29:51,670 INFO L146 ILogger]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:51,670 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:51,670 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:51,679 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:51,728 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:51,728 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:51,731 WARN L146 ILogger]: Trace formula consists of 286 conjuncts, 150 conjunts are in the unsatisfiable core [2019-05-23 11:29:51,736 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:55,735 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:29:55,736 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:29:55,743 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:55,743 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:29:55,743 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:29:55,948 INFO L146 ILogger]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:55,966 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:55,966 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 44] total 96 [2019-05-23 11:29:55,967 INFO L146 ILogger]: Interpolant automaton has 96 states [2019-05-23 11:29:55,968 INFO L146 ILogger]: Constructing interpolant automaton starting with 96 interpolants. [2019-05-23 11:29:55,971 INFO L146 ILogger]: CoverageRelationStatistics Valid=436, Invalid=8684, Unknown=0, NotChecked=0, Total=9120 [2019-05-23 11:29:55,972 INFO L146 ILogger]: Start difference. First operand 178 states and 187 transitions. Second operand 96 states. [2019-05-23 11:30:09,563 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:09,564 INFO L146 ILogger]: Finished difference Result 355 states and 373 transitions. [2019-05-23 11:30:09,564 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2019-05-23 11:30:09,564 INFO L146 ILogger]: Start accepts. Automaton has 96 states. Word has length 177 [2019-05-23 11:30:09,565 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:09,570 INFO L146 ILogger]: With dead ends: 355 [2019-05-23 11:30:09,570 INFO L146 ILogger]: Without dead ends: 349 [2019-05-23 11:30:09,577 INFO L146 ILogger]: 0 DeclaredPredicates, 331 GetRequests, 119 SyntacticMatches, 57 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8884 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=1142, Invalid=23350, Unknown=0, NotChecked=0, Total=24492 [2019-05-23 11:30:09,577 INFO L146 ILogger]: Start minimizeSevpa. Operand 349 states. [2019-05-23 11:30:09,586 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 349 to 321. [2019-05-23 11:30:09,587 INFO L146 ILogger]: Start removeUnreachable. Operand 321 states. [2019-05-23 11:30:09,588 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 321 states to 321 states and 339 transitions. [2019-05-23 11:30:09,589 INFO L146 ILogger]: Start accepts. Automaton has 321 states and 339 transitions. Word has length 177 [2019-05-23 11:30:09,589 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:09,589 INFO L146 ILogger]: Abstraction has 321 states and 339 transitions. [2019-05-23 11:30:09,589 INFO L146 ILogger]: Interpolant automaton has 96 states. [2019-05-23 11:30:09,589 INFO L146 ILogger]: Start isEmpty. Operand 321 states and 339 transitions. [2019-05-23 11:30:09,592 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:30:09,592 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:09,592 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:09,592 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:09,593 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:09,593 INFO L146 ILogger]: Analyzing trace with hash -300592188, now seen corresponding path program 9 times [2019-05-23 11:30:09,593 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:09,593 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:09,594 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:09,594 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:09,594 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:09,611 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:09,855 INFO L146 ILogger]: Checked inductivity of 105 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:09,855 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:09,855 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:09,867 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:09,936 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:30:09,936 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:09,937 INFO L146 ILogger]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:09,940 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:10,126 INFO L146 ILogger]: Checked inductivity of 105 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:10,145 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:10,145 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:30:10,146 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:30:10,146 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:30:10,147 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:30:10,147 INFO L146 ILogger]: Start difference. First operand 321 states and 339 transitions. Second operand 24 states. [2019-05-23 11:30:11,851 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:11,851 INFO L146 ILogger]: Finished difference Result 703 states and 742 transitions. [2019-05-23 11:30:11,852 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:30:11,852 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 184 [2019-05-23 11:30:11,852 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:11,856 INFO L146 ILogger]: With dead ends: 703 [2019-05-23 11:30:11,856 INFO L146 ILogger]: Without dead ends: 594 [2019-05-23 11:30:11,858 INFO L146 ILogger]: 0 DeclaredPredicates, 225 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=327, Invalid=2223, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:30:11,859 INFO L146 ILogger]: Start minimizeSevpa. Operand 594 states. [2019-05-23 11:30:11,872 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 594 to 423. [2019-05-23 11:30:11,872 INFO L146 ILogger]: Start removeUnreachable. Operand 423 states. [2019-05-23 11:30:11,874 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 423 states to 423 states and 446 transitions. [2019-05-23 11:30:11,874 INFO L146 ILogger]: Start accepts. Automaton has 423 states and 446 transitions. Word has length 184 [2019-05-23 11:30:11,874 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:11,874 INFO L146 ILogger]: Abstraction has 423 states and 446 transitions. [2019-05-23 11:30:11,874 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:30:11,875 INFO L146 ILogger]: Start isEmpty. Operand 423 states and 446 transitions. [2019-05-23 11:30:11,876 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:30:11,876 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:11,876 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:11,877 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:11,877 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:11,877 INFO L146 ILogger]: Analyzing trace with hash 1148616986, now seen corresponding path program 10 times [2019-05-23 11:30:11,877 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:11,877 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:11,878 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:11,878 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:11,878 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:11,893 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:12,372 INFO L146 ILogger]: Checked inductivity of 105 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:12,373 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:12,373 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:12,381 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:12,426 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:12,426 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:12,427 INFO L146 ILogger]: Trace formula consists of 295 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:12,429 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:12,694 INFO L146 ILogger]: Checked inductivity of 105 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:12,712 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:12,713 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:30:12,713 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:30:12,713 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:30:12,714 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:30:12,714 INFO L146 ILogger]: Start difference. First operand 423 states and 446 transitions. Second operand 21 states. [2019-05-23 11:30:13,224 WARN L146 ILogger]: Spent 118.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 6 [2019-05-23 11:30:14,008 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:14,008 INFO L146 ILogger]: Finished difference Result 574 states and 603 transitions. [2019-05-23 11:30:14,009 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:30:14,009 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 184 [2019-05-23 11:30:14,009 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:14,013 INFO L146 ILogger]: With dead ends: 574 [2019-05-23 11:30:14,013 INFO L146 ILogger]: Without dead ends: 545 [2019-05-23 11:30:14,014 INFO L146 ILogger]: 0 DeclaredPredicates, 220 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:30:14,015 INFO L146 ILogger]: Start minimizeSevpa. Operand 545 states. [2019-05-23 11:30:14,026 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 545 to 510. [2019-05-23 11:30:14,027 INFO L146 ILogger]: Start removeUnreachable. Operand 510 states. [2019-05-23 11:30:14,028 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 510 states to 510 states and 538 transitions. [2019-05-23 11:30:14,029 INFO L146 ILogger]: Start accepts. Automaton has 510 states and 538 transitions. Word has length 184 [2019-05-23 11:30:14,029 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:14,029 INFO L146 ILogger]: Abstraction has 510 states and 538 transitions. [2019-05-23 11:30:14,029 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:30:14,029 INFO L146 ILogger]: Start isEmpty. Operand 510 states and 538 transitions. [2019-05-23 11:30:14,031 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:30:14,031 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:14,032 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:14,032 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:14,032 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:14,032 INFO L146 ILogger]: Analyzing trace with hash 1671520737, now seen corresponding path program 11 times [2019-05-23 11:30:14,032 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:14,033 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:14,033 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:14,034 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:14,034 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:14,051 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:14,475 INFO L146 ILogger]: Checked inductivity of 105 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:14,476 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:14,476 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:14,492 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:14,549 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:30:14,550 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:14,551 INFO L146 ILogger]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:14,554 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:14,705 INFO L146 ILogger]: Checked inductivity of 105 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:14,724 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:14,725 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:30:14,725 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:30:14,726 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:30:14,726 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:30:14,726 INFO L146 ILogger]: Start difference. First operand 510 states and 538 transitions. Second operand 21 states. [2019-05-23 11:30:15,614 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:15,614 INFO L146 ILogger]: Finished difference Result 633 states and 664 transitions. [2019-05-23 11:30:15,615 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:30:15,615 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 184 [2019-05-23 11:30:15,615 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:15,618 INFO L146 ILogger]: With dead ends: 633 [2019-05-23 11:30:15,618 INFO L146 ILogger]: Without dead ends: 565 [2019-05-23 11:30:15,620 INFO L146 ILogger]: 0 DeclaredPredicates, 220 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=267, Invalid=1455, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:30:15,620 INFO L146 ILogger]: Start minimizeSevpa. Operand 565 states. [2019-05-23 11:30:15,631 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 565 to 445. [2019-05-23 11:30:15,631 INFO L146 ILogger]: Start removeUnreachable. Operand 445 states. [2019-05-23 11:30:15,632 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 445 states to 445 states and 468 transitions. [2019-05-23 11:30:15,632 INFO L146 ILogger]: Start accepts. Automaton has 445 states and 468 transitions. Word has length 184 [2019-05-23 11:30:15,632 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:15,633 INFO L146 ILogger]: Abstraction has 445 states and 468 transitions. [2019-05-23 11:30:15,633 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:30:15,633 INFO L146 ILogger]: Start isEmpty. Operand 445 states and 468 transitions. [2019-05-23 11:30:15,634 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:30:15,634 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:15,634 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:15,635 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:15,635 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:15,635 INFO L146 ILogger]: Analyzing trace with hash 1159189672, now seen corresponding path program 12 times [2019-05-23 11:30:15,635 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:15,635 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:15,636 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:15,636 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:15,636 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:15,651 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:16,394 INFO L146 ILogger]: Checked inductivity of 105 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:16,395 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:16,395 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:16,403 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:16,446 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:30:16,446 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:16,447 INFO L146 ILogger]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:16,450 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:16,766 INFO L146 ILogger]: Checked inductivity of 105 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:16,785 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:16,786 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:16,786 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:16,786 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:16,787 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:16,787 INFO L146 ILogger]: Start difference. First operand 445 states and 468 transitions. Second operand 20 states. [2019-05-23 11:30:17,621 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:17,621 INFO L146 ILogger]: Finished difference Result 605 states and 631 transitions. [2019-05-23 11:30:17,621 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:17,622 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 184 [2019-05-23 11:30:17,622 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:17,625 INFO L146 ILogger]: With dead ends: 605 [2019-05-23 11:30:17,625 INFO L146 ILogger]: Without dead ends: 544 [2019-05-23 11:30:17,626 INFO L146 ILogger]: 0 DeclaredPredicates, 208 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:17,627 INFO L146 ILogger]: Start minimizeSevpa. Operand 544 states. [2019-05-23 11:30:17,638 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 544 to 493. [2019-05-23 11:30:17,638 INFO L146 ILogger]: Start removeUnreachable. Operand 493 states. [2019-05-23 11:30:17,639 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 493 states to 493 states and 518 transitions. [2019-05-23 11:30:17,639 INFO L146 ILogger]: Start accepts. Automaton has 493 states and 518 transitions. Word has length 184 [2019-05-23 11:30:17,639 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:17,640 INFO L146 ILogger]: Abstraction has 493 states and 518 transitions. [2019-05-23 11:30:17,640 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:17,640 INFO L146 ILogger]: Start isEmpty. Operand 493 states and 518 transitions. [2019-05-23 11:30:17,641 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:30:17,641 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:17,642 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:17,642 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:17,642 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:17,642 INFO L146 ILogger]: Analyzing trace with hash -747251345, now seen corresponding path program 13 times [2019-05-23 11:30:17,642 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:17,643 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:17,643 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:17,644 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:17,644 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:17,659 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:18,227 INFO L146 ILogger]: Checked inductivity of 105 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:18,227 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:18,227 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:18,237 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:18,288 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:18,289 INFO L146 ILogger]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:18,291 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:18,426 INFO L146 ILogger]: Checked inductivity of 105 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:18,444 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:18,444 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:18,445 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:18,445 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:18,445 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:18,446 INFO L146 ILogger]: Start difference. First operand 493 states and 518 transitions. Second operand 20 states. [2019-05-23 11:30:19,150 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:19,151 INFO L146 ILogger]: Finished difference Result 605 states and 629 transitions. [2019-05-23 11:30:19,151 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:19,151 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 184 [2019-05-23 11:30:19,152 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:19,153 INFO L146 ILogger]: With dead ends: 605 [2019-05-23 11:30:19,153 INFO L146 ILogger]: Without dead ends: 528 [2019-05-23 11:30:19,154 INFO L146 ILogger]: 0 DeclaredPredicates, 208 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:19,155 INFO L146 ILogger]: Start minimizeSevpa. Operand 528 states. [2019-05-23 11:30:19,165 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 528 to 477. [2019-05-23 11:30:19,165 INFO L146 ILogger]: Start removeUnreachable. Operand 477 states. [2019-05-23 11:30:19,166 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 477 states to 477 states and 500 transitions. [2019-05-23 11:30:19,166 INFO L146 ILogger]: Start accepts. Automaton has 477 states and 500 transitions. Word has length 184 [2019-05-23 11:30:19,166 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:19,166 INFO L146 ILogger]: Abstraction has 477 states and 500 transitions. [2019-05-23 11:30:19,167 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:19,167 INFO L146 ILogger]: Start isEmpty. Operand 477 states and 500 transitions. [2019-05-23 11:30:19,168 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:30:19,168 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:19,168 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:19,169 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:19,169 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:19,169 INFO L146 ILogger]: Analyzing trace with hash 1096249398, now seen corresponding path program 14 times [2019-05-23 11:30:19,169 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:19,169 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:19,170 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:19,170 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:19,170 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:19,184 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:19,369 INFO L146 ILogger]: Checked inductivity of 105 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:19,370 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:19,370 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:19,378 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:19,429 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:19,429 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:19,430 INFO L146 ILogger]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:19,432 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:19,676 INFO L146 ILogger]: Checked inductivity of 105 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:19,694 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:19,694 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:19,695 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:19,695 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:19,695 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:19,696 INFO L146 ILogger]: Start difference. First operand 477 states and 500 transitions. Second operand 20 states. [2019-05-23 11:30:20,420 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:20,420 INFO L146 ILogger]: Finished difference Result 605 states and 627 transitions. [2019-05-23 11:30:20,421 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:20,421 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 184 [2019-05-23 11:30:20,421 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:20,424 INFO L146 ILogger]: With dead ends: 605 [2019-05-23 11:30:20,424 INFO L146 ILogger]: Without dead ends: 512 [2019-05-23 11:30:20,425 INFO L146 ILogger]: 0 DeclaredPredicates, 208 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:20,425 INFO L146 ILogger]: Start minimizeSevpa. Operand 512 states. [2019-05-23 11:30:20,435 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 512 to 461. [2019-05-23 11:30:20,435 INFO L146 ILogger]: Start removeUnreachable. Operand 461 states. [2019-05-23 11:30:20,436 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 461 states to 461 states and 482 transitions. [2019-05-23 11:30:20,436 INFO L146 ILogger]: Start accepts. Automaton has 461 states and 482 transitions. Word has length 184 [2019-05-23 11:30:20,437 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:20,437 INFO L146 ILogger]: Abstraction has 461 states and 482 transitions. [2019-05-23 11:30:20,437 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:20,437 INFO L146 ILogger]: Start isEmpty. Operand 461 states and 482 transitions. [2019-05-23 11:30:20,438 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:30:20,438 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:20,439 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:20,439 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:20,439 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:20,439 INFO L146 ILogger]: Analyzing trace with hash 156801277, now seen corresponding path program 15 times [2019-05-23 11:30:20,439 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:20,440 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:20,440 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:20,440 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:20,441 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:20,455 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:20,604 INFO L146 ILogger]: Checked inductivity of 105 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:20,605 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:20,605 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:20,614 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:20,658 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:30:20,658 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:20,659 INFO L146 ILogger]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:20,662 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:20,830 INFO L146 ILogger]: Checked inductivity of 105 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:20,849 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:20,850 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:30:20,850 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:30:20,850 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:30:20,851 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:30:20,851 INFO L146 ILogger]: Start difference. First operand 461 states and 482 transitions. Second operand 24 states. [2019-05-23 11:30:22,237 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:22,237 INFO L146 ILogger]: Finished difference Result 816 states and 847 transitions. [2019-05-23 11:30:22,237 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:30:22,238 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 184 [2019-05-23 11:30:22,238 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:22,240 INFO L146 ILogger]: With dead ends: 816 [2019-05-23 11:30:22,241 INFO L146 ILogger]: Without dead ends: 691 [2019-05-23 11:30:22,242 INFO L146 ILogger]: 0 DeclaredPredicates, 225 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=327, Invalid=2223, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:30:22,242 INFO L146 ILogger]: Start minimizeSevpa. Operand 691 states. [2019-05-23 11:30:22,253 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 691 to 476. [2019-05-23 11:30:22,253 INFO L146 ILogger]: Start removeUnreachable. Operand 476 states. [2019-05-23 11:30:22,254 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 476 states to 476 states and 498 transitions. [2019-05-23 11:30:22,254 INFO L146 ILogger]: Start accepts. Automaton has 476 states and 498 transitions. Word has length 184 [2019-05-23 11:30:22,255 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:22,255 INFO L146 ILogger]: Abstraction has 476 states and 498 transitions. [2019-05-23 11:30:22,255 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:30:22,255 INFO L146 ILogger]: Start isEmpty. Operand 476 states and 498 transitions. [2019-05-23 11:30:22,256 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:30:22,256 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:22,257 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:22,257 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:22,257 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:22,257 INFO L146 ILogger]: Analyzing trace with hash -97935221, now seen corresponding path program 16 times [2019-05-23 11:30:22,257 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:22,258 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:22,258 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:22,258 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:22,258 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:22,272 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:22,434 INFO L146 ILogger]: Checked inductivity of 105 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:22,434 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:22,434 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:22,442 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:22,487 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:22,487 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:22,488 INFO L146 ILogger]: Trace formula consists of 295 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:22,499 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:22,668 INFO L146 ILogger]: Checked inductivity of 105 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:22,692 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:22,693 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:22,693 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:22,693 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:22,693 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:22,694 INFO L146 ILogger]: Start difference. First operand 476 states and 498 transitions. Second operand 20 states. [2019-05-23 11:30:23,318 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:23,319 INFO L146 ILogger]: Finished difference Result 658 states and 679 transitions. [2019-05-23 11:30:23,319 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:23,319 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 184 [2019-05-23 11:30:23,319 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:23,322 INFO L146 ILogger]: With dead ends: 658 [2019-05-23 11:30:23,323 INFO L146 ILogger]: Without dead ends: 517 [2019-05-23 11:30:23,323 INFO L146 ILogger]: 0 DeclaredPredicates, 208 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:23,324 INFO L146 ILogger]: Start minimizeSevpa. Operand 517 states. [2019-05-23 11:30:23,333 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 517 to 468. [2019-05-23 11:30:23,334 INFO L146 ILogger]: Start removeUnreachable. Operand 468 states. [2019-05-23 11:30:23,335 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 468 states to 468 states and 488 transitions. [2019-05-23 11:30:23,335 INFO L146 ILogger]: Start accepts. Automaton has 468 states and 488 transitions. Word has length 184 [2019-05-23 11:30:23,335 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:23,335 INFO L146 ILogger]: Abstraction has 468 states and 488 transitions. [2019-05-23 11:30:23,335 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:23,335 INFO L146 ILogger]: Start isEmpty. Operand 468 states and 488 transitions. [2019-05-23 11:30:23,337 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:30:23,337 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:23,337 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:23,337 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:23,337 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:23,338 INFO L146 ILogger]: Analyzing trace with hash -2144239790, now seen corresponding path program 17 times [2019-05-23 11:30:23,338 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:23,338 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:23,339 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:23,339 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:23,339 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:23,352 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:23,867 INFO L146 ILogger]: Checked inductivity of 105 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:23,867 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:23,867 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:23,876 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:23,922 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:30:23,922 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:23,923 INFO L146 ILogger]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:23,925 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:24,074 INFO L146 ILogger]: Checked inductivity of 105 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:24,093 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:24,093 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:30:24,093 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:30:24,094 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:30:24,094 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:30:24,094 INFO L146 ILogger]: Start difference. First operand 468 states and 488 transitions. Second operand 24 states. [2019-05-23 11:30:24,506 WARN L146 ILogger]: Spent 132.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2019-05-23 11:30:25,585 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:25,585 INFO L146 ILogger]: Finished difference Result 1084 states and 1137 transitions. [2019-05-23 11:30:25,585 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:30:25,586 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 184 [2019-05-23 11:30:25,586 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:25,588 INFO L146 ILogger]: With dead ends: 1084 [2019-05-23 11:30:25,588 INFO L146 ILogger]: Without dead ends: 683 [2019-05-23 11:30:25,590 INFO L146 ILogger]: 0 DeclaredPredicates, 221 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=309, Invalid=2043, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:30:25,590 INFO L146 ILogger]: Start minimizeSevpa. Operand 683 states. [2019-05-23 11:30:25,599 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 683 to 364. [2019-05-23 11:30:25,599 INFO L146 ILogger]: Start removeUnreachable. Operand 364 states. [2019-05-23 11:30:25,600 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 364 states to 364 states and 383 transitions. [2019-05-23 11:30:25,600 INFO L146 ILogger]: Start accepts. Automaton has 364 states and 383 transitions. Word has length 184 [2019-05-23 11:30:25,600 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:25,600 INFO L146 ILogger]: Abstraction has 364 states and 383 transitions. [2019-05-23 11:30:25,601 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:30:25,601 INFO L146 ILogger]: Start isEmpty. Operand 364 states and 383 transitions. [2019-05-23 11:30:25,602 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:30:25,602 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:25,602 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:25,602 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:25,603 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:25,603 INFO L146 ILogger]: Analyzing trace with hash 449376281, now seen corresponding path program 18 times [2019-05-23 11:30:25,603 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:25,603 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:25,604 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:25,604 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:25,604 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:25,632 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:25,855 INFO L146 ILogger]: Checked inductivity of 105 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:25,856 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:25,856 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:25,864 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:25,959 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:30:25,959 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:25,961 INFO L146 ILogger]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:25,963 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:26,813 INFO L146 ILogger]: Checked inductivity of 105 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:26,832 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:26,832 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:26,833 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:26,833 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:26,833 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:26,834 INFO L146 ILogger]: Start difference. First operand 364 states and 383 transitions. Second operand 20 states. [2019-05-23 11:30:27,532 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:27,532 INFO L146 ILogger]: Finished difference Result 686 states and 722 transitions. [2019-05-23 11:30:27,532 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:30:27,533 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 184 [2019-05-23 11:30:27,533 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:27,535 INFO L146 ILogger]: With dead ends: 686 [2019-05-23 11:30:27,535 INFO L146 ILogger]: Without dead ends: 388 [2019-05-23 11:30:27,536 INFO L146 ILogger]: 0 DeclaredPredicates, 216 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=268, Invalid=1292, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:30:27,537 INFO L146 ILogger]: Start minimizeSevpa. Operand 388 states. [2019-05-23 11:30:27,543 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 388 to 323. [2019-05-23 11:30:27,543 INFO L146 ILogger]: Start removeUnreachable. Operand 323 states. [2019-05-23 11:30:27,544 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 323 states to 323 states and 338 transitions. [2019-05-23 11:30:27,544 INFO L146 ILogger]: Start accepts. Automaton has 323 states and 338 transitions. Word has length 184 [2019-05-23 11:30:27,545 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:27,545 INFO L146 ILogger]: Abstraction has 323 states and 338 transitions. [2019-05-23 11:30:27,545 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:27,545 INFO L146 ILogger]: Start isEmpty. Operand 323 states and 338 transitions. [2019-05-23 11:30:27,546 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 206 [2019-05-23 11:30:27,546 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:27,547 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:27,547 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:27,547 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:27,547 INFO L146 ILogger]: Analyzing trace with hash 1867991010, now seen corresponding path program 19 times [2019-05-23 11:30:27,547 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:27,547 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:27,548 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:27,548 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:27,548 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:27,563 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:28,400 INFO L146 ILogger]: Checked inductivity of 150 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2019-05-23 11:30:28,401 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:28,401 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:28,411 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:28,466 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:28,467 INFO L146 ILogger]: Trace formula consists of 330 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:28,470 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:28,703 INFO L146 ILogger]: Checked inductivity of 150 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2019-05-23 11:30:28,721 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:28,722 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:28,722 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:28,722 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:28,723 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:28,723 INFO L146 ILogger]: Start difference. First operand 323 states and 338 transitions. Second operand 20 states. [2019-05-23 11:30:29,343 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:29,344 INFO L146 ILogger]: Finished difference Result 350 states and 364 transitions. [2019-05-23 11:30:29,346 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:30:29,346 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 205 [2019-05-23 11:30:29,347 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:29,348 INFO L146 ILogger]: With dead ends: 350 [2019-05-23 11:30:29,348 INFO L146 ILogger]: Without dead ends: 241 [2019-05-23 11:30:29,349 INFO L146 ILogger]: 0 DeclaredPredicates, 233 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:30:29,349 INFO L146 ILogger]: Start minimizeSevpa. Operand 241 states. [2019-05-23 11:30:29,353 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 241 to 236. [2019-05-23 11:30:29,353 INFO L146 ILogger]: Start removeUnreachable. Operand 236 states. [2019-05-23 11:30:29,353 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 236 states to 236 states and 246 transitions. [2019-05-23 11:30:29,354 INFO L146 ILogger]: Start accepts. Automaton has 236 states and 246 transitions. Word has length 205 [2019-05-23 11:30:29,354 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:29,354 INFO L146 ILogger]: Abstraction has 236 states and 246 transitions. [2019-05-23 11:30:29,354 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:29,354 INFO L146 ILogger]: Start isEmpty. Operand 236 states and 246 transitions. [2019-05-23 11:30:29,355 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 213 [2019-05-23 11:30:29,355 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:29,356 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:29,356 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:29,356 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:29,356 INFO L146 ILogger]: Analyzing trace with hash -1362740426, now seen corresponding path program 20 times [2019-05-23 11:30:29,356 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:29,357 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:29,357 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:29,357 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:29,357 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:29,371 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:29,777 INFO L146 ILogger]: Checked inductivity of 165 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-05-23 11:30:29,777 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:29,777 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:29,786 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:29,835 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:29,835 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:29,836 INFO L146 ILogger]: Trace formula consists of 341 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:29,838 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:30,082 INFO L146 ILogger]: Checked inductivity of 165 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-05-23 11:30:30,100 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:30,100 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:30,101 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:30,101 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:30,101 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:30,101 INFO L146 ILogger]: Start difference. First operand 236 states and 246 transitions. Second operand 20 states. [2019-05-23 11:30:30,724 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:30,724 INFO L146 ILogger]: Finished difference Result 364 states and 380 transitions. [2019-05-23 11:30:30,725 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:30:30,725 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 212 [2019-05-23 11:30:30,726 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:30,727 INFO L146 ILogger]: With dead ends: 364 [2019-05-23 11:30:30,727 INFO L146 ILogger]: Without dead ends: 248 [2019-05-23 11:30:30,728 INFO L146 ILogger]: 0 DeclaredPredicates, 240 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:30:30,729 INFO L146 ILogger]: Start minimizeSevpa. Operand 248 states. [2019-05-23 11:30:30,733 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 248 to 243. [2019-05-23 11:30:30,733 INFO L146 ILogger]: Start removeUnreachable. Operand 243 states. [2019-05-23 11:30:30,734 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 243 states to 243 states and 253 transitions. [2019-05-23 11:30:30,734 INFO L146 ILogger]: Start accepts. Automaton has 243 states and 253 transitions. Word has length 212 [2019-05-23 11:30:30,734 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:30,734 INFO L146 ILogger]: Abstraction has 243 states and 253 transitions. [2019-05-23 11:30:30,734 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:30,734 INFO L146 ILogger]: Start isEmpty. Operand 243 states and 253 transitions. [2019-05-23 11:30:30,735 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 220 [2019-05-23 11:30:30,736 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:30,736 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:30,736 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:30,736 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:30,736 INFO L146 ILogger]: Analyzing trace with hash -1062553079, now seen corresponding path program 21 times [2019-05-23 11:30:30,737 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:30,737 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:30,737 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:30,737 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:30,738 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:30,750 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:32,110 INFO L146 ILogger]: Checked inductivity of 180 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-05-23 11:30:32,110 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:32,110 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:32,118 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:32,171 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:30:32,171 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:32,172 INFO L146 ILogger]: Trace formula consists of 352 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:32,176 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:32,522 INFO L146 ILogger]: Checked inductivity of 180 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-05-23 11:30:32,541 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:32,541 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:32,542 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:32,542 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:32,542 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:32,542 INFO L146 ILogger]: Start difference. First operand 243 states and 253 transitions. Second operand 20 states.