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-examples/standard_init7_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:15:28,832 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:15:28,834 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:15:28,846 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:15:28,847 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:15:28,848 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:15:28,849 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:15:28,851 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:15:28,853 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:15:28,854 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:15:28,855 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:15:28,855 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:15:28,856 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:15:28,857 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:15:28,859 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:15:28,859 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:15:28,860 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:15:28,862 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:15:28,865 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:15:28,866 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:15:28,868 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:15:28,869 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:15:28,872 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:15:28,872 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:15:28,873 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:15:28,874 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:15:28,874 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:15:28,875 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:15:28,876 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:15:28,877 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:15:28,877 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:15:28,878 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:15:28,879 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:15:28,880 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:15:28,880 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:15:28,881 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:15:28,881 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:15:28,882 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:15:28,883 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:15:28,883 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:15:28,898 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:15:28,899 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:15:28,900 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:15:28,900 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:15:28,900 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:15:28,901 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:15:28,901 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:15:28,901 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:15:28,901 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:15:28,901 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:15:28,902 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:15:28,902 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:15:28,902 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:15:28,902 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:15:28,902 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:15:28,903 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:15:28,903 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:15:28,903 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:15:28,903 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:15:28,903 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:15:28,904 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:15:28,904 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:15:28,904 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:15:28,904 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:15:28,904 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:15:28,905 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:15:28,905 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:15:28,905 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:15:28,905 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 11:15:28,938 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:15:28,950 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:15:28,954 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:15:28,956 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:15:28,956 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:15:28,957 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_init7_false-unreach-call_ground.i [2019-05-23 11:15:29,022 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4f2b0e75/e22bbf5b5f9b465cb6c77f6c74dc0bc1/FLAG1119e02a3 [2019-05-23 11:15:29,460 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:15:29,461 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_init7_false-unreach-call_ground.i [2019-05-23 11:15:29,469 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4f2b0e75/e22bbf5b5f9b465cb6c77f6c74dc0bc1/FLAG1119e02a3 [2019-05-23 11:15:29,817 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4f2b0e75/e22bbf5b5f9b465cb6c77f6c74dc0bc1 [2019-05-23 11:15:29,828 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:15:29,829 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:15:29,830 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:29,831 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:15:29,834 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:15:29,835 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:29" (1/1) ... [2019-05-23 11:15:29,838 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@666eca58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:29, skipping insertion in model container [2019-05-23 11:15:29,839 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:29" (1/1) ... [2019-05-23 11:15:29,846 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:15:29,867 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:15:30,105 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:30,111 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:15:30,146 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:30,177 INFO L146 ILogger]: Completed translation [2019-05-23 11:15:30,178 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30 WrapperNode [2019-05-23 11:15:30,178 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:30,179 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:30,179 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:15:30,181 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:15:30,192 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,206 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,235 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:30,236 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:15:30,236 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:15:30,236 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:15:30,246 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,246 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,248 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,249 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,266 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,368 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,369 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,371 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:15:30,378 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:15:30,378 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:15:30,378 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:15:30,379 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (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 11:15:30,434 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:15:30,434 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:15:30,434 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:15:30,434 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:15:30,435 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:15:30,435 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:15:30,962 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:15:30,962 INFO L146 ILogger]: Removed 14 assume(true) statements. [2019-05-23 11:15:30,964 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:30 BoogieIcfgContainer [2019-05-23 11:15:30,964 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:15:30,965 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:15:30,965 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:15:30,968 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:15:30,969 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:15:29" (1/3) ... [2019-05-23 11:15:30,970 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4dcfd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:30, skipping insertion in model container [2019-05-23 11:15:30,970 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (2/3) ... [2019-05-23 11:15:30,970 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4dcfd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:30, skipping insertion in model container [2019-05-23 11:15:30,971 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:30" (3/3) ... [2019-05-23 11:15:30,972 INFO L146 ILogger]: Analyzing ICFG standard_init7_false-unreach-call_ground.i [2019-05-23 11:15:30,982 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:15:30,991 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:15:31,008 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:15:31,040 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:15:31,041 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:15:31,041 INFO L146 ILogger]: Hoare is true [2019-05-23 11:15:31,041 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:15:31,041 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:15:31,041 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:15:31,041 INFO L146 ILogger]: Difference is false [2019-05-23 11:15:31,042 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:15:31,042 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:15:31,056 INFO L146 ILogger]: Start isEmpty. Operand 53 states. [2019-05-23 11:15:31,063 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 29 [2019-05-23 11:15:31,063 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:31,064 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] [2019-05-23 11:15:31,067 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:31,072 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:31,072 INFO L146 ILogger]: Analyzing trace with hash 410252560, now seen corresponding path program 1 times [2019-05-23 11:15:31,073 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:31,074 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:31,116 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,117 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:31,117 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,159 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:31,199 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 11:15:31,202 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:31,203 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:15:31,206 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:15:31,219 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:15:31,220 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:15:31,222 INFO L146 ILogger]: Start difference. First operand 53 states. Second operand 2 states. [2019-05-23 11:15:31,243 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:31,243 INFO L146 ILogger]: Finished difference Result 97 states and 127 transitions. [2019-05-23 11:15:31,243 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:15:31,244 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 28 [2019-05-23 11:15:31,245 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:31,254 INFO L146 ILogger]: With dead ends: 97 [2019-05-23 11:15:31,255 INFO L146 ILogger]: Without dead ends: 47 [2019-05-23 11:15:31,258 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 11:15:31,274 INFO L146 ILogger]: Start minimizeSevpa. Operand 47 states. [2019-05-23 11:15:31,288 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-05-23 11:15:31,290 INFO L146 ILogger]: Start removeUnreachable. Operand 47 states. [2019-05-23 11:15:31,291 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2019-05-23 11:15:31,292 INFO L146 ILogger]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 28 [2019-05-23 11:15:31,292 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:31,293 INFO L146 ILogger]: Abstraction has 47 states and 54 transitions. [2019-05-23 11:15:31,293 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:15:31,293 INFO L146 ILogger]: Start isEmpty. Operand 47 states and 54 transitions. [2019-05-23 11:15:31,294 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 29 [2019-05-23 11:15:31,294 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:31,295 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] [2019-05-23 11:15:31,295 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:31,295 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:31,295 INFO L146 ILogger]: Analyzing trace with hash -1632628952, now seen corresponding path program 1 times [2019-05-23 11:15:31,296 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:31,296 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:31,297 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,297 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:31,297 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,310 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:31,368 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 11:15:31,368 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:31,368 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:15:31,370 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:15:31,370 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:15:31,371 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:15:31,371 INFO L146 ILogger]: Start difference. First operand 47 states and 54 transitions. Second operand 3 states. [2019-05-23 11:15:31,815 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:31,815 INFO L146 ILogger]: Finished difference Result 106 states and 126 transitions. [2019-05-23 11:15:31,816 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:15:31,816 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 28 [2019-05-23 11:15:31,817 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:31,818 INFO L146 ILogger]: With dead ends: 106 [2019-05-23 11:15:31,818 INFO L146 ILogger]: Without dead ends: 68 [2019-05-23 11:15:31,819 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:15:31,820 INFO L146 ILogger]: Start minimizeSevpa. Operand 68 states. [2019-05-23 11:15:31,827 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 68 to 54. [2019-05-23 11:15:31,827 INFO L146 ILogger]: Start removeUnreachable. Operand 54 states. [2019-05-23 11:15:31,828 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2019-05-23 11:15:31,829 INFO L146 ILogger]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 28 [2019-05-23 11:15:31,829 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:31,829 INFO L146 ILogger]: Abstraction has 54 states and 61 transitions. [2019-05-23 11:15:31,830 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:15:31,830 INFO L146 ILogger]: Start isEmpty. Operand 54 states and 61 transitions. [2019-05-23 11:15:31,832 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 50 [2019-05-23 11:15:31,832 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:31,832 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, 1, 1, 1, 1, 1] [2019-05-23 11:15:31,832 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:31,833 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:31,833 INFO L146 ILogger]: Analyzing trace with hash 2137226925, now seen corresponding path program 1 times [2019-05-23 11:15:31,833 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:31,833 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:31,834 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,834 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:31,834 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,874 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:31,930 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:15:31,931 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:31,931 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 11:15:31,951 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:31,999 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,001 INFO L146 ILogger]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:15:32,008 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:32,054 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:15:32,075 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:32,075 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:15:32,077 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:15:32,077 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:15:32,078 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:15:32,078 INFO L146 ILogger]: Start difference. First operand 54 states and 61 transitions. Second operand 5 states. [2019-05-23 11:15:32,472 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:32,472 INFO L146 ILogger]: Finished difference Result 133 states and 153 transitions. [2019-05-23 11:15:32,476 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:15:32,476 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 49 [2019-05-23 11:15:32,477 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:32,478 INFO L146 ILogger]: With dead ends: 133 [2019-05-23 11:15:32,478 INFO L146 ILogger]: Without dead ends: 89 [2019-05-23 11:15:32,479 INFO L146 ILogger]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:15:32,480 INFO L146 ILogger]: Start minimizeSevpa. Operand 89 states. [2019-05-23 11:15:32,495 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 89 to 75. [2019-05-23 11:15:32,496 INFO L146 ILogger]: Start removeUnreachable. Operand 75 states. [2019-05-23 11:15:32,498 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2019-05-23 11:15:32,498 INFO L146 ILogger]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 49 [2019-05-23 11:15:32,498 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:32,498 INFO L146 ILogger]: Abstraction has 75 states and 82 transitions. [2019-05-23 11:15:32,499 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:15:32,499 INFO L146 ILogger]: Start isEmpty. Operand 75 states and 82 transitions. [2019-05-23 11:15:32,502 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 71 [2019-05-23 11:15:32,502 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:32,502 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] [2019-05-23 11:15:32,506 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:32,506 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:32,506 INFO L146 ILogger]: Analyzing trace with hash 154334280, now seen corresponding path program 2 times [2019-05-23 11:15:32,507 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:32,507 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:32,508 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,508 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:32,508 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,590 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,688 INFO L146 ILogger]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-05-23 11:15:32,688 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:32,689 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 11:15:32,706 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:32,747 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:32,747 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,747 INFO L146 ILogger]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:15:32,751 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:32,777 INFO L146 ILogger]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-05-23 11:15:32,796 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:32,797 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:15:32,797 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:15:32,797 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:15:32,798 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:15:32,798 INFO L146 ILogger]: Start difference. First operand 75 states and 82 transitions. Second operand 6 states. [2019-05-23 11:15:33,386 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:33,386 INFO L146 ILogger]: Finished difference Result 172 states and 192 transitions. [2019-05-23 11:15:33,386 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:15:33,387 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 70 [2019-05-23 11:15:33,387 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:33,389 INFO L146 ILogger]: With dead ends: 172 [2019-05-23 11:15:33,389 INFO L146 ILogger]: Without dead ends: 110 [2019-05-23 11:15:33,390 INFO L146 ILogger]: 0 DeclaredPredicates, 74 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:15:33,391 INFO L146 ILogger]: Start minimizeSevpa. Operand 110 states. [2019-05-23 11:15:33,399 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 110 to 96. [2019-05-23 11:15:33,399 INFO L146 ILogger]: Start removeUnreachable. Operand 96 states. [2019-05-23 11:15:33,400 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2019-05-23 11:15:33,400 INFO L146 ILogger]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 70 [2019-05-23 11:15:33,401 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:33,401 INFO L146 ILogger]: Abstraction has 96 states and 103 transitions. [2019-05-23 11:15:33,401 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:15:33,401 INFO L146 ILogger]: Start isEmpty. Operand 96 states and 103 transitions. [2019-05-23 11:15:33,403 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 92 [2019-05-23 11:15:33,403 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:33,403 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, 1, 1, 1, 1, 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 11:15:33,403 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:33,404 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:33,404 INFO L146 ILogger]: Analyzing trace with hash 203916429, now seen corresponding path program 3 times [2019-05-23 11:15:33,404 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:33,404 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:33,405 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,405 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:33,405 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,445 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:33,583 INFO L146 ILogger]: Checked inductivity of 84 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:15:33,584 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:33,584 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 11:15:33,594 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:33,727 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:15:33,727 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:33,728 INFO L146 ILogger]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:15:33,733 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:33,765 INFO L146 ILogger]: Checked inductivity of 84 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:15:33,784 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:33,784 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:15:33,784 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:15:33,785 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:15:33,785 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:33,785 INFO L146 ILogger]: Start difference. First operand 96 states and 103 transitions. Second operand 7 states. [2019-05-23 11:15:34,265 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:34,265 INFO L146 ILogger]: Finished difference Result 211 states and 231 transitions. [2019-05-23 11:15:34,267 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:15:34,267 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 91 [2019-05-23 11:15:34,267 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:34,269 INFO L146 ILogger]: With dead ends: 211 [2019-05-23 11:15:34,269 INFO L146 ILogger]: Without dead ends: 131 [2019-05-23 11:15:34,273 INFO L146 ILogger]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:34,274 INFO L146 ILogger]: Start minimizeSevpa. Operand 131 states. [2019-05-23 11:15:34,293 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 131 to 117. [2019-05-23 11:15:34,293 INFO L146 ILogger]: Start removeUnreachable. Operand 117 states. [2019-05-23 11:15:34,295 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 117 states to 117 states and 124 transitions. [2019-05-23 11:15:34,298 INFO L146 ILogger]: Start accepts. Automaton has 117 states and 124 transitions. Word has length 91 [2019-05-23 11:15:34,298 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:34,298 INFO L146 ILogger]: Abstraction has 117 states and 124 transitions. [2019-05-23 11:15:34,299 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:15:34,299 INFO L146 ILogger]: Start isEmpty. Operand 117 states and 124 transitions. [2019-05-23 11:15:34,306 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 113 [2019-05-23 11:15:34,307 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:34,307 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 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 11:15:34,307 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:34,308 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:34,308 INFO L146 ILogger]: Analyzing trace with hash 2067378536, now seen corresponding path program 4 times [2019-05-23 11:15:34,308 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:34,308 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:34,309 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:34,309 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:34,310 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:34,405 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,629 INFO L146 ILogger]: Checked inductivity of 154 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-05-23 11:15:34,630 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:34,630 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 11:15:34,640 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:34,684 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:34,684 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,685 INFO L146 ILogger]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:15:34,690 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:34,718 INFO L146 ILogger]: Checked inductivity of 154 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-05-23 11:15:34,739 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:34,739 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-05-23 11:15:34,740 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:15:34,740 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:15:34,740 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:15:34,740 INFO L146 ILogger]: Start difference. First operand 117 states and 124 transitions. Second operand 8 states. [2019-05-23 11:15:35,154 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:35,154 INFO L146 ILogger]: Finished difference Result 250 states and 270 transitions. [2019-05-23 11:15:35,155 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:15:35,155 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 112 [2019-05-23 11:15:35,155 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:35,157 INFO L146 ILogger]: With dead ends: 250 [2019-05-23 11:15:35,157 INFO L146 ILogger]: Without dead ends: 152 [2019-05-23 11:15:35,158 INFO L146 ILogger]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:15:35,159 INFO L146 ILogger]: Start minimizeSevpa. Operand 152 states. [2019-05-23 11:15:35,167 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 152 to 138. [2019-05-23 11:15:35,167 INFO L146 ILogger]: Start removeUnreachable. Operand 138 states. [2019-05-23 11:15:35,169 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 138 states to 138 states and 145 transitions. [2019-05-23 11:15:35,169 INFO L146 ILogger]: Start accepts. Automaton has 138 states and 145 transitions. Word has length 112 [2019-05-23 11:15:35,169 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:35,169 INFO L146 ILogger]: Abstraction has 138 states and 145 transitions. [2019-05-23 11:15:35,169 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:15:35,169 INFO L146 ILogger]: Start isEmpty. Operand 138 states and 145 transitions. [2019-05-23 11:15:35,171 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 134 [2019-05-23 11:15:35,172 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:35,172 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 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 11:15:35,172 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:35,172 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:35,173 INFO L146 ILogger]: Analyzing trace with hash 993669741, now seen corresponding path program 5 times [2019-05-23 11:15:35,173 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:35,173 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:35,174 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,174 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:35,174 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,211 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,316 INFO L146 ILogger]: Checked inductivity of 245 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2019-05-23 11:15:35,317 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:35,317 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 11:15:35,327 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:16:00,498 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:16:00,499 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:00,515 INFO L146 ILogger]: Trace formula consists of 192 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:16:00,519 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:00,554 INFO L146 ILogger]: Checked inductivity of 245 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2019-05-23 11:16:00,578 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:00,578 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:16:00,579 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:16:00,579 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:16:00,579 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:16:00,579 INFO L146 ILogger]: Start difference. First operand 138 states and 145 transitions. Second operand 9 states. [2019-05-23 11:16:00,967 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:00,967 INFO L146 ILogger]: Finished difference Result 289 states and 309 transitions. [2019-05-23 11:16:00,968 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:16:00,968 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 133 [2019-05-23 11:16:00,968 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:00,969 INFO L146 ILogger]: With dead ends: 289 [2019-05-23 11:16:00,969 INFO L146 ILogger]: Without dead ends: 173 [2019-05-23 11:16:00,970 INFO L146 ILogger]: 0 DeclaredPredicates, 140 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:16:00,971 INFO L146 ILogger]: Start minimizeSevpa. Operand 173 states. [2019-05-23 11:16:00,981 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 173 to 159. [2019-05-23 11:16:00,981 INFO L146 ILogger]: Start removeUnreachable. Operand 159 states. [2019-05-23 11:16:00,983 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 159 states to 159 states and 166 transitions. [2019-05-23 11:16:00,983 INFO L146 ILogger]: Start accepts. Automaton has 159 states and 166 transitions. Word has length 133 [2019-05-23 11:16:00,983 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:00,983 INFO L146 ILogger]: Abstraction has 159 states and 166 transitions. [2019-05-23 11:16:00,984 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:16:00,984 INFO L146 ILogger]: Start isEmpty. Operand 159 states and 166 transitions. [2019-05-23 11:16:00,989 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 155 [2019-05-23 11:16:00,989 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:00,990 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 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 11:16:00,990 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:00,990 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:00,991 INFO L146 ILogger]: Analyzing trace with hash 1104037512, now seen corresponding path program 6 times [2019-05-23 11:16:00,991 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:00,991 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:00,993 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:00,993 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:00,993 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:01,033 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:01,182 INFO L146 ILogger]: Checked inductivity of 357 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2019-05-23 11:16:01,183 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:01,183 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 11:16:01,193 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:16:07,137 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:16:07,137 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:07,146 INFO L146 ILogger]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:16:07,150 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:07,261 INFO L146 ILogger]: Checked inductivity of 357 backedges. 32 proven. 51 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2019-05-23 11:16:07,283 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:07,283 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 12 [2019-05-23 11:16:07,284 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:16:07,284 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:16:07,284 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:07,284 INFO L146 ILogger]: Start difference. First operand 159 states and 166 transitions. Second operand 12 states. [2019-05-23 11:16:07,750 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:07,750 INFO L146 ILogger]: Finished difference Result 335 states and 362 transitions. [2019-05-23 11:16:07,750 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:16:07,751 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 154 [2019-05-23 11:16:07,751 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:07,752 INFO L146 ILogger]: With dead ends: 335 [2019-05-23 11:16:07,753 INFO L146 ILogger]: Without dead ends: 201 [2019-05-23 11:16:07,754 INFO L146 ILogger]: 0 DeclaredPredicates, 162 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:07,754 INFO L146 ILogger]: Start minimizeSevpa. Operand 201 states. [2019-05-23 11:16:07,762 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 201 to 201. [2019-05-23 11:16:07,762 INFO L146 ILogger]: Start removeUnreachable. Operand 201 states. [2019-05-23 11:16:07,763 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 201 states to 201 states and 208 transitions. [2019-05-23 11:16:07,763 INFO L146 ILogger]: Start accepts. Automaton has 201 states and 208 transitions. Word has length 154 [2019-05-23 11:16:07,763 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:07,763 INFO L146 ILogger]: Abstraction has 201 states and 208 transitions. [2019-05-23 11:16:07,763 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:16:07,764 INFO L146 ILogger]: Start isEmpty. Operand 201 states and 208 transitions. [2019-05-23 11:16:07,766 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 197 [2019-05-23 11:16:07,766 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:07,766 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 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 11:16:07,767 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:07,767 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:07,767 INFO L146 ILogger]: Analyzing trace with hash 662352808, now seen corresponding path program 7 times [2019-05-23 11:16:07,767 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:07,767 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:07,768 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:07,768 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:07,768 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:07,813 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:08,026 INFO L146 ILogger]: Checked inductivity of 644 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2019-05-23 11:16:08,027 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:08,027 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 11:16:08,035 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:08,080 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:08,081 INFO L146 ILogger]: Trace formula consists of 276 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:16:08,084 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:08,133 INFO L146 ILogger]: Checked inductivity of 644 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2019-05-23 11:16:08,152 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:08,153 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:16:08,153 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:16:08,153 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:16:08,154 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:08,154 INFO L146 ILogger]: Start difference. First operand 201 states and 208 transitions. Second operand 12 states. [2019-05-23 11:16:08,806 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:08,807 INFO L146 ILogger]: Finished difference Result 406 states and 426 transitions. [2019-05-23 11:16:08,807 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:16:08,807 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 196 [2019-05-23 11:16:08,808 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:08,814 INFO L146 ILogger]: With dead ends: 406 [2019-05-23 11:16:08,814 INFO L146 ILogger]: Without dead ends: 236 [2019-05-23 11:16:08,815 INFO L146 ILogger]: 0 DeclaredPredicates, 206 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:08,816 INFO L146 ILogger]: Start minimizeSevpa. Operand 236 states. [2019-05-23 11:16:08,823 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 236 to 222. [2019-05-23 11:16:08,824 INFO L146 ILogger]: Start removeUnreachable. Operand 222 states. [2019-05-23 11:16:08,824 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 222 states to 222 states and 229 transitions. [2019-05-23 11:16:08,824 INFO L146 ILogger]: Start accepts. Automaton has 222 states and 229 transitions. Word has length 196 [2019-05-23 11:16:08,825 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:08,825 INFO L146 ILogger]: Abstraction has 222 states and 229 transitions. [2019-05-23 11:16:08,825 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:16:08,825 INFO L146 ILogger]: Start isEmpty. Operand 222 states and 229 transitions. [2019-05-23 11:16:08,827 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 218 [2019-05-23 11:16:08,827 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:08,827 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 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 11:16:08,828 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:08,828 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:08,828 INFO L146 ILogger]: Analyzing trace with hash -1918663123, now seen corresponding path program 8 times [2019-05-23 11:16:08,828 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:08,828 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:08,829 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:08,829 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:08,829 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:08,873 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:09,032 INFO L146 ILogger]: Checked inductivity of 819 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2019-05-23 11:16:09,033 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:09,033 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 11:16:09,044 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:09,100 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:09,100 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:09,102 INFO L146 ILogger]: Trace formula consists of 304 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:16:09,105 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:09,201 INFO L146 ILogger]: Checked inductivity of 819 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2019-05-23 11:16:09,223 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:09,223 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:16:09,224 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:16:09,224 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:16:09,224 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:16:09,224 INFO L146 ILogger]: Start difference. First operand 222 states and 229 transitions. Second operand 13 states. [2019-05-23 11:16:09,762 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:09,762 INFO L146 ILogger]: Finished difference Result 445 states and 465 transitions. [2019-05-23 11:16:09,763 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:16:09,763 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 217 [2019-05-23 11:16:09,763 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:09,764 INFO L146 ILogger]: With dead ends: 445 [2019-05-23 11:16:09,764 INFO L146 ILogger]: Without dead ends: 257 [2019-05-23 11:16:09,765 INFO L146 ILogger]: 0 DeclaredPredicates, 228 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:16:09,766 INFO L146 ILogger]: Start minimizeSevpa. Operand 257 states. [2019-05-23 11:16:09,772 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 257 to 243. [2019-05-23 11:16:09,773 INFO L146 ILogger]: Start removeUnreachable. Operand 243 states. [2019-05-23 11:16:09,773 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 243 states to 243 states and 250 transitions. [2019-05-23 11:16:09,774 INFO L146 ILogger]: Start accepts. Automaton has 243 states and 250 transitions. Word has length 217 [2019-05-23 11:16:09,774 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:09,774 INFO L146 ILogger]: Abstraction has 243 states and 250 transitions. [2019-05-23 11:16:09,774 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:16:09,774 INFO L146 ILogger]: Start isEmpty. Operand 243 states and 250 transitions. [2019-05-23 11:16:09,777 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 239 [2019-05-23 11:16:09,777 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:09,777 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 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 11:16:09,777 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:09,778 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:09,778 INFO L146 ILogger]: Analyzing trace with hash 340326600, now seen corresponding path program 9 times [2019-05-23 11:16:09,778 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:09,778 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:09,779 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:09,779 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:09,779 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:09,814 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:10,070 INFO L146 ILogger]: Checked inductivity of 1015 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2019-05-23 11:16:10,070 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:10,070 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 11:16:10,079 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:29,041 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2019-05-23 11:16:29,041 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:29,051 INFO L146 ILogger]: Trace formula consists of 332 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:16:29,055 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:29,194 INFO L146 ILogger]: Checked inductivity of 1015 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2019-05-23 11:16:29,235 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:29,235 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-05-23 11:16:29,236 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:16:29,236 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:16:29,238 INFO L146 ILogger]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:16:29,239 INFO L146 ILogger]: Start difference. First operand 243 states and 250 transitions. Second operand 14 states. [2019-05-23 11:16:29,796 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:29,796 INFO L146 ILogger]: Finished difference Result 484 states and 504 transitions. [2019-05-23 11:16:29,798 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:16:29,798 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 238 [2019-05-23 11:16:29,799 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:29,800 INFO L146 ILogger]: With dead ends: 484 [2019-05-23 11:16:29,800 INFO L146 ILogger]: Without dead ends: 278 [2019-05-23 11:16:29,801 INFO L146 ILogger]: 0 DeclaredPredicates, 250 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:16:29,802 INFO L146 ILogger]: Start minimizeSevpa. Operand 278 states. [2019-05-23 11:16:29,807 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 278 to 264. [2019-05-23 11:16:29,810 INFO L146 ILogger]: Start removeUnreachable. Operand 264 states. [2019-05-23 11:16:29,813 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 264 states to 264 states and 271 transitions. [2019-05-23 11:16:29,813 INFO L146 ILogger]: Start accepts. Automaton has 264 states and 271 transitions. Word has length 238 [2019-05-23 11:16:29,813 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:29,814 INFO L146 ILogger]: Abstraction has 264 states and 271 transitions. [2019-05-23 11:16:29,814 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:16:29,814 INFO L146 ILogger]: Start isEmpty. Operand 264 states and 271 transitions. [2019-05-23 11:16:29,815 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 260 [2019-05-23 11:16:29,815 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:29,815 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 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 11:16:29,815 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:29,815 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:29,816 INFO L146 ILogger]: Analyzing trace with hash 635841549, now seen corresponding path program 10 times [2019-05-23 11:16:29,816 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:29,816 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:29,816 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:29,816 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:29,817 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:29,853 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:30,087 INFO L146 ILogger]: Checked inductivity of 1232 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2019-05-23 11:16:30,087 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:30,087 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 11:16:30,097 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:16:30,158 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:16:30,158 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:30,160 INFO L146 ILogger]: Trace formula consists of 360 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:16:30,163 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:30,217 INFO L146 ILogger]: Checked inductivity of 1232 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2019-05-23 11:16:30,238 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:30,238 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:16:30,239 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:16:30,239 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:16:30,239 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:16:30,240 INFO L146 ILogger]: Start difference. First operand 264 states and 271 transitions. Second operand 15 states. [2019-05-23 11:16:31,825 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:31,826 INFO L146 ILogger]: Finished difference Result 523 states and 543 transitions. [2019-05-23 11:16:31,826 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:16:31,826 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 259 [2019-05-23 11:16:31,827 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:31,828 INFO L146 ILogger]: With dead ends: 523 [2019-05-23 11:16:31,828 INFO L146 ILogger]: Without dead ends: 299 [2019-05-23 11:16:31,831 INFO L146 ILogger]: 0 DeclaredPredicates, 272 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:16:31,831 INFO L146 ILogger]: Start minimizeSevpa. Operand 299 states. [2019-05-23 11:16:31,838 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 299 to 285. [2019-05-23 11:16:31,838 INFO L146 ILogger]: Start removeUnreachable. Operand 285 states. [2019-05-23 11:16:31,839 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 285 states to 285 states and 292 transitions. [2019-05-23 11:16:31,839 INFO L146 ILogger]: Start accepts. Automaton has 285 states and 292 transitions. Word has length 259 [2019-05-23 11:16:31,840 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:31,840 INFO L146 ILogger]: Abstraction has 285 states and 292 transitions. [2019-05-23 11:16:31,840 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:16:31,840 INFO L146 ILogger]: Start isEmpty. Operand 285 states and 292 transitions. [2019-05-23 11:16:31,845 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 281 [2019-05-23 11:16:31,845 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:31,845 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 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 11:16:31,846 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:31,846 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:31,846 INFO L146 ILogger]: Analyzing trace with hash -1379723800, now seen corresponding path program 11 times [2019-05-23 11:16:31,846 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:31,847 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:31,847 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:31,848 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:31,848 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:31,927 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:32,520 INFO L146 ILogger]: Checked inductivity of 1470 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2019-05-23 11:16:32,520 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:32,521 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 11:16:32,531 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1