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_sum_const2_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:29:33,788 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:29:33,790 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:29:33,801 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:29:33,801 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:29:33,802 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:29:33,804 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:29:33,805 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:29:33,807 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:29:33,808 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:29:33,809 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:29:33,809 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:29:33,810 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:29:33,811 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:29:33,812 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:29:33,813 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:29:33,814 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:29:33,816 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:29:33,820 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:29:33,825 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:29:33,826 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:29:33,830 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:29:33,834 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:29:33,834 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:29:33,834 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:29:33,835 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:29:33,835 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:29:33,836 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:29:33,837 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:29:33,839 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:29:33,840 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:29:33,840 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:29:33,841 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:29:33,842 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:29:33,842 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:29:33,842 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:29:33,845 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:29:33,847 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:29:33,847 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:29:33,848 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:29:33,869 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:29:33,870 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:29:33,871 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:29:33,871 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:29:33,872 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:29:33,872 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:29:33,872 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:29:33,872 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:29:33,872 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:29:33,873 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:29:33,873 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:29:33,873 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:29:33,873 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:29:33,873 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:29:33,874 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:29:33,874 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:29:33,874 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:29:33,874 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:29:33,874 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:29:33,875 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:29:33,875 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:29:33,875 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:29:33,875 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:29:33,876 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:29:33,876 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:29:33,876 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:29:33,876 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:29:33,876 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:29:33,876 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 11:29:33,915 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:29:33,932 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:29:33,938 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:29:33,940 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:29:33,941 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:29:33,941 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/zero_sum_const2_true-unreach-call.c [2019-05-23 11:29:34,014 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d5cb92d/277313918d8c4a30b49c87518e54f4db/FLAG0b3eb3542 [2019-05-23 11:29:34,456 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:29:34,457 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/zero_sum_const2_true-unreach-call.c [2019-05-23 11:29:34,462 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d5cb92d/277313918d8c4a30b49c87518e54f4db/FLAG0b3eb3542 [2019-05-23 11:29:34,835 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d5cb92d/277313918d8c4a30b49c87518e54f4db [2019-05-23 11:29:34,845 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:29:34,846 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:29:34,847 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:34,848 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:29:34,851 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:29:34,852 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:34" (1/1) ... [2019-05-23 11:29:34,855 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d338995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:34, skipping insertion in model container [2019-05-23 11:29:34,855 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:34" (1/1) ... [2019-05-23 11:29:34,863 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:29:34,887 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:29:35,043 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:35,047 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:29:35,071 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:35,092 INFO L146 ILogger]: Completed translation [2019-05-23 11:29:35,093 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35 WrapperNode [2019-05-23 11:29:35,093 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:35,094 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:35,094 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:29:35,094 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:29:35,103 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,111 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,142 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:35,143 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:29:35,143 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:29:35,143 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:29:35,151 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,151 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,153 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,153 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,158 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,259 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,264 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,266 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:29:35,266 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:29:35,267 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:29:35,269 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:29:35,270 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (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 11:29:35,324 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:29:35,325 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:29:35,325 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:29:35,325 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:29:35,325 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:29:35,325 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:29:35,831 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:29:35,831 INFO L146 ILogger]: Removed 11 assume(true) statements. [2019-05-23 11:29:35,832 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:35 BoogieIcfgContainer [2019-05-23 11:29:35,832 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:29:35,834 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:29:35,834 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:29:35,837 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:29:35,837 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:29:34" (1/3) ... [2019-05-23 11:29:35,838 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce7094b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:35, skipping insertion in model container [2019-05-23 11:29:35,838 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (2/3) ... [2019-05-23 11:29:35,839 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce7094b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:35, skipping insertion in model container [2019-05-23 11:29:35,839 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:35" (3/3) ... [2019-05-23 11:29:35,840 INFO L146 ILogger]: Analyzing ICFG zero_sum_const2_true-unreach-call.c [2019-05-23 11:29:35,850 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:29:35,858 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:29:35,874 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:29:35,906 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:29:35,906 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:29:35,907 INFO L146 ILogger]: Hoare is true [2019-05-23 11:29:35,907 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:29:35,907 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:29:35,907 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:29:35,907 INFO L146 ILogger]: Difference is false [2019-05-23 11:29:35,908 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:29:35,908 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:29:35,925 INFO L146 ILogger]: Start isEmpty. Operand 62 states. [2019-05-23 11:29:35,937 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:29:35,937 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:35,938 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] [2019-05-23 11:29:35,941 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:35,949 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:35,949 INFO L146 ILogger]: Analyzing trace with hash 788142013, now seen corresponding path program 1 times [2019-05-23 11:29:35,950 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:35,951 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:35,988 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:35,989 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:35,989 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,029 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:36,072 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 11:29:36,075 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:36,075 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:29:36,079 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:29:36,091 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:29:36,092 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:29:36,094 INFO L146 ILogger]: Start difference. First operand 62 states. Second operand 2 states. [2019-05-23 11:29:36,116 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:36,116 INFO L146 ILogger]: Finished difference Result 106 states and 125 transitions. [2019-05-23 11:29:36,116 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:29:36,118 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 27 [2019-05-23 11:29:36,118 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:36,129 INFO L146 ILogger]: With dead ends: 106 [2019-05-23 11:29:36,129 INFO L146 ILogger]: Without dead ends: 56 [2019-05-23 11:29:36,132 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 11:29:36,146 INFO L146 ILogger]: Start minimizeSevpa. Operand 56 states. [2019-05-23 11:29:36,160 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-05-23 11:29:36,162 INFO L146 ILogger]: Start removeUnreachable. Operand 56 states. [2019-05-23 11:29:36,164 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2019-05-23 11:29:36,165 INFO L146 ILogger]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 27 [2019-05-23 11:29:36,166 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:36,166 INFO L146 ILogger]: Abstraction has 56 states and 60 transitions. [2019-05-23 11:29:36,166 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:29:36,166 INFO L146 ILogger]: Start isEmpty. Operand 56 states and 60 transitions. [2019-05-23 11:29:36,167 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:29:36,167 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:36,168 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] [2019-05-23 11:29:36,168 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:36,168 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:36,169 INFO L146 ILogger]: Analyzing trace with hash -776084503, now seen corresponding path program 1 times [2019-05-23 11:29:36,169 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:36,169 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:36,170 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,170 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:36,170 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,193 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:36,343 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 11:29:36,343 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:36,343 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:29:36,345 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:29:36,346 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:29:36,346 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:29:36,347 INFO L146 ILogger]: Start difference. First operand 56 states and 60 transitions. Second operand 5 states. [2019-05-23 11:29:36,652 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:36,652 INFO L146 ILogger]: Finished difference Result 77 states and 84 transitions. [2019-05-23 11:29:36,653 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:29:36,653 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 27 [2019-05-23 11:29:36,653 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:36,655 INFO L146 ILogger]: With dead ends: 77 [2019-05-23 11:29:36,655 INFO L146 ILogger]: Without dead ends: 71 [2019-05-23 11:29:36,656 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:36,657 INFO L146 ILogger]: Start minimizeSevpa. Operand 71 states. [2019-05-23 11:29:36,664 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 71 to 63. [2019-05-23 11:29:36,664 INFO L146 ILogger]: Start removeUnreachable. Operand 63 states. [2019-05-23 11:29:36,666 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2019-05-23 11:29:36,666 INFO L146 ILogger]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 27 [2019-05-23 11:29:36,667 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:36,667 INFO L146 ILogger]: Abstraction has 63 states and 70 transitions. [2019-05-23 11:29:36,667 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:29:36,667 INFO L146 ILogger]: Start isEmpty. Operand 63 states and 70 transitions. [2019-05-23 11:29:36,669 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 11:29:36,669 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:36,669 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] [2019-05-23 11:29:36,670 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:36,670 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:36,670 INFO L146 ILogger]: Analyzing trace with hash -2098103204, now seen corresponding path program 1 times [2019-05-23 11:29:36,670 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:36,670 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:36,672 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,672 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:36,672 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,700 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:36,848 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 11:29:36,848 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:36,848 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 11:29:36,866 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:36,905 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:36,907 INFO L146 ILogger]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:29:36,912 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:36,979 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 11:29:37,002 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:29:37,003 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-05-23 11:29:37,003 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:29:37,004 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:29:37,004 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:37,004 INFO L146 ILogger]: Start difference. First operand 63 states and 70 transitions. Second operand 7 states. [2019-05-23 11:29:37,423 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:37,423 INFO L146 ILogger]: Finished difference Result 131 states and 147 transitions. [2019-05-23 11:29:37,426 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:29:37,426 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 34 [2019-05-23 11:29:37,427 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:37,430 INFO L146 ILogger]: With dead ends: 131 [2019-05-23 11:29:37,430 INFO L146 ILogger]: Without dead ends: 86 [2019-05-23 11:29:37,431 INFO L146 ILogger]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:29:37,432 INFO L146 ILogger]: Start minimizeSevpa. Operand 86 states. [2019-05-23 11:29:37,444 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 86 to 68. [2019-05-23 11:29:37,447 INFO L146 ILogger]: Start removeUnreachable. Operand 68 states. [2019-05-23 11:29:37,449 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2019-05-23 11:29:37,450 INFO L146 ILogger]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 34 [2019-05-23 11:29:37,453 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:37,453 INFO L146 ILogger]: Abstraction has 68 states and 72 transitions. [2019-05-23 11:29:37,453 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:29:37,453 INFO L146 ILogger]: Start isEmpty. Operand 68 states and 72 transitions. [2019-05-23 11:29:37,455 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 68 [2019-05-23 11:29:37,455 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:37,455 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] [2019-05-23 11:29:37,456 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:37,457 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:37,457 INFO L146 ILogger]: Analyzing trace with hash 1279945822, now seen corresponding path program 1 times [2019-05-23 11:29:37,457 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:37,457 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:37,459 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:37,459 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:37,459 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:37,478 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:37,610 INFO L146 ILogger]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:29:37,610 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:37,611 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 11:29:37,629 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:37,678 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:37,679 INFO L146 ILogger]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:37,684 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:38,019 INFO L146 ILogger]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:29:38,045 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:38,045 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:38,046 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:38,046 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:38,047 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:38,047 INFO L146 ILogger]: Start difference. First operand 68 states and 72 transitions. Second operand 9 states. [2019-05-23 11:29:38,415 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:38,415 INFO L146 ILogger]: Finished difference Result 140 states and 148 transitions. [2019-05-23 11:29:38,417 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:38,417 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 67 [2019-05-23 11:29:38,418 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:38,419 INFO L146 ILogger]: With dead ends: 140 [2019-05-23 11:29:38,419 INFO L146 ILogger]: Without dead ends: 91 [2019-05-23 11:29:38,420 INFO L146 ILogger]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:38,420 INFO L146 ILogger]: Start minimizeSevpa. Operand 91 states. [2019-05-23 11:29:38,428 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 91 to 73. [2019-05-23 11:29:38,428 INFO L146 ILogger]: Start removeUnreachable. Operand 73 states. [2019-05-23 11:29:38,429 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2019-05-23 11:29:38,429 INFO L146 ILogger]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 67 [2019-05-23 11:29:38,429 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:38,429 INFO L146 ILogger]: Abstraction has 73 states and 77 transitions. [2019-05-23 11:29:38,430 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:38,430 INFO L146 ILogger]: Start isEmpty. Operand 73 states and 77 transitions. [2019-05-23 11:29:38,432 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 73 [2019-05-23 11:29:38,432 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:38,432 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:29:38,432 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:38,432 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:38,433 INFO L146 ILogger]: Analyzing trace with hash -114277078, now seen corresponding path program 2 times [2019-05-23 11:29:38,433 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:38,433 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:38,434 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:38,434 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:38,434 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:38,453 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:38,567 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:29:38,567 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:38,567 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 11:29:38,576 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:38,617 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:38,618 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:38,619 INFO L146 ILogger]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:38,622 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:38,773 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:29:38,791 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:38,791 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:38,792 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:38,792 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:38,792 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:38,793 INFO L146 ILogger]: Start difference. First operand 73 states and 77 transitions. Second operand 9 states. [2019-05-23 11:29:39,372 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:39,373 INFO L146 ILogger]: Finished difference Result 135 states and 142 transitions. [2019-05-23 11:29:39,373 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:39,373 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 72 [2019-05-23 11:29:39,374 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:39,375 INFO L146 ILogger]: With dead ends: 135 [2019-05-23 11:29:39,376 INFO L146 ILogger]: Without dead ends: 95 [2019-05-23 11:29:39,377 INFO L146 ILogger]: 0 DeclaredPredicates, 80 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:39,378 INFO L146 ILogger]: Start minimizeSevpa. Operand 95 states. [2019-05-23 11:29:39,383 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 95 to 80. [2019-05-23 11:29:39,383 INFO L146 ILogger]: Start removeUnreachable. Operand 80 states. [2019-05-23 11:29:39,384 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2019-05-23 11:29:39,385 INFO L146 ILogger]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 72 [2019-05-23 11:29:39,385 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:39,385 INFO L146 ILogger]: Abstraction has 80 states and 84 transitions. [2019-05-23 11:29:39,385 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:39,385 INFO L146 ILogger]: Start isEmpty. Operand 80 states and 84 transitions. [2019-05-23 11:29:39,387 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 80 [2019-05-23 11:29:39,387 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:39,388 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:29:39,388 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:39,388 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:39,389 INFO L146 ILogger]: Analyzing trace with hash 509881570, now seen corresponding path program 3 times [2019-05-23 11:29:39,389 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:39,389 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:39,390 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:39,390 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:39,390 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:39,409 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:39,500 INFO L146 ILogger]: Checked inductivity of 27 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:29:39,501 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:39,501 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 11:29:39,510 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:39,550 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:29:39,551 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:39,552 INFO L146 ILogger]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:39,555 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:39,643 INFO L146 ILogger]: Checked inductivity of 27 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:29:39,663 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:39,663 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:39,663 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:39,663 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:39,664 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:39,664 INFO L146 ILogger]: Start difference. First operand 80 states and 84 transitions. Second operand 9 states. [2019-05-23 11:29:39,991 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:39,991 INFO L146 ILogger]: Finished difference Result 128 states and 134 transitions. [2019-05-23 11:29:39,992 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:39,992 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 79 [2019-05-23 11:29:39,992 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:39,994 INFO L146 ILogger]: With dead ends: 128 [2019-05-23 11:29:39,994 INFO L146 ILogger]: Without dead ends: 97 [2019-05-23 11:29:39,995 INFO L146 ILogger]: 0 DeclaredPredicates, 87 GetRequests, 76 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 11:29:39,996 INFO L146 ILogger]: Start minimizeSevpa. Operand 97 states. [2019-05-23 11:29:40,002 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 97 to 87. [2019-05-23 11:29:40,002 INFO L146 ILogger]: Start removeUnreachable. Operand 87 states. [2019-05-23 11:29:40,003 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2019-05-23 11:29:40,003 INFO L146 ILogger]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 79 [2019-05-23 11:29:40,003 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:40,003 INFO L146 ILogger]: Abstraction has 87 states and 91 transitions. [2019-05-23 11:29:40,004 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:40,004 INFO L146 ILogger]: Start isEmpty. Operand 87 states and 91 transitions. [2019-05-23 11:29:40,005 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 87 [2019-05-23 11:29:40,005 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:40,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:40,006 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:40,006 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:40,006 INFO L146 ILogger]: Analyzing trace with hash -981350109, now seen corresponding path program 4 times [2019-05-23 11:29:40,006 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:40,006 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:40,007 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:40,007 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:40,007 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:40,023 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:40,152 INFO L146 ILogger]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-05-23 11:29:40,152 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:40,152 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 11:29:40,164 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:40,211 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:40,211 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:40,212 INFO L146 ILogger]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:40,218 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:40,632 INFO L146 ILogger]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-05-23 11:29:40,652 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:40,652 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:40,653 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:40,653 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:40,653 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:40,653 INFO L146 ILogger]: Start difference. First operand 87 states and 91 transitions. Second operand 9 states. [2019-05-23 11:29:40,891 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:40,891 INFO L146 ILogger]: Finished difference Result 121 states and 126 transitions. [2019-05-23 11:29:40,891 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:40,892 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 86 [2019-05-23 11:29:40,892 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:40,893 INFO L146 ILogger]: With dead ends: 121 [2019-05-23 11:29:40,893 INFO L146 ILogger]: Without dead ends: 99 [2019-05-23 11:29:40,894 INFO L146 ILogger]: 0 DeclaredPredicates, 94 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:40,895 INFO L146 ILogger]: Start minimizeSevpa. Operand 99 states. [2019-05-23 11:29:40,901 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 99 to 94. [2019-05-23 11:29:40,901 INFO L146 ILogger]: Start removeUnreachable. Operand 94 states. [2019-05-23 11:29:40,903 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2019-05-23 11:29:40,903 INFO L146 ILogger]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 86 [2019-05-23 11:29:40,903 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:40,904 INFO L146 ILogger]: Abstraction has 94 states and 98 transitions. [2019-05-23 11:29:40,904 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:40,904 INFO L146 ILogger]: Start isEmpty. Operand 94 states and 98 transitions. [2019-05-23 11:29:40,906 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 94 [2019-05-23 11:29:40,906 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:40,906 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, 1, 1, 1, 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 11:29:40,906 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:40,907 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:40,907 INFO L146 ILogger]: Analyzing trace with hash 1931543209, now seen corresponding path program 5 times [2019-05-23 11:29:40,907 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:40,907 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:40,908 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:40,908 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:40,908 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:40,975 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:41,592 WARN L146 ILogger]: Spent 139.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2019-05-23 11:29:41,960 WARN L146 ILogger]: Spent 149.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2019-05-23 11:29:42,235 WARN L146 ILogger]: Spent 126.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2019-05-23 11:29:42,659 WARN L146 ILogger]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2019-05-23 11:29:43,889 WARN L146 ILogger]: Spent 116.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2019-05-23 11:29:45,055 INFO L146 ILogger]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:45,055 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:45,055 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 11:29:45,064 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:45,108 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-05-23 11:29:45,108 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:45,111 INFO L146 ILogger]: Trace formula consists of 153 conjuncts, 73 conjunts are in the unsatisfiable core [2019-05-23 11:29:45,119 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:45,312 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:29:45,313 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:29:45,409 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:45,410 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:29:45,410 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2019-05-23 11:29:46,636 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 15 treesize of output 7 [2019-05-23 11:29:46,637 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:29:46,643 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:46,644 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 11:29:46,644 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:10 [2019-05-23 11:29:46,811 INFO L146 ILogger]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:46,829 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:46,830 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 30] total 65 [2019-05-23 11:29:46,830 INFO L146 ILogger]: Interpolant automaton has 65 states [2019-05-23 11:29:46,830 INFO L146 ILogger]: Constructing interpolant automaton starting with 65 interpolants. [2019-05-23 11:29:46,832 INFO L146 ILogger]: CoverageRelationStatistics Valid=334, Invalid=3826, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:29:46,832 INFO L146 ILogger]: Start difference. First operand 94 states and 98 transitions. Second operand 65 states. [2019-05-23 11:29:51,525 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:51,525 INFO L146 ILogger]: Finished difference Result 172 states and 179 transitions. [2019-05-23 11:29:51,526 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:29:51,526 INFO L146 ILogger]: Start accepts. Automaton has 65 states. Word has length 93 [2019-05-23 11:29:51,527 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:51,528 INFO L146 ILogger]: With dead ends: 172 [2019-05-23 11:29:51,528 INFO L146 ILogger]: Without dead ends: 166 [2019-05-23 11:29:51,532 INFO L146 ILogger]: 0 DeclaredPredicates, 172 GetRequests, 69 SyntacticMatches, 5 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3429 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=779, Invalid=9121, Unknown=0, NotChecked=0, Total=9900 [2019-05-23 11:29:51,533 INFO L146 ILogger]: Start minimizeSevpa. Operand 166 states. [2019-05-23 11:29:51,540 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 166 to 141. [2019-05-23 11:29:51,541 INFO L146 ILogger]: Start removeUnreachable. Operand 141 states. [2019-05-23 11:29:51,541 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 141 states to 141 states and 148 transitions. [2019-05-23 11:29:51,542 INFO L146 ILogger]: Start accepts. Automaton has 141 states and 148 transitions. Word has length 93 [2019-05-23 11:29:51,542 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:51,542 INFO L146 ILogger]: Abstraction has 141 states and 148 transitions. [2019-05-23 11:29:51,542 INFO L146 ILogger]: Interpolant automaton has 65 states. [2019-05-23 11:29:51,542 INFO L146 ILogger]: Start isEmpty. Operand 141 states and 148 transitions. [2019-05-23 11:29:51,544 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 101 [2019-05-23 11:29:51,544 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:51,544 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, 1, 1, 1, 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 11:29:51,545 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:51,545 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:51,545 INFO L146 ILogger]: Analyzing trace with hash 1750222236, now seen corresponding path program 6 times [2019-05-23 11:29:51,545 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:51,545 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:51,546 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:51,546 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:51,547 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:51,560 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:51,757 INFO L146 ILogger]: Checked inductivity of 58 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-05-23 11:29:51,757 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:51,757 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 11:29:51,768 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:29:51,794 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:29:51,794 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:51,795 INFO L146 ILogger]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:51,799 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:52,005 INFO L146 ILogger]: Checked inductivity of 58 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:29:52,024 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:52,024 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:29:52,025 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:29:52,026 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:29:52,026 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:29:52,026 INFO L146 ILogger]: Start difference. First operand 141 states and 148 transitions. Second operand 21 states. [2019-05-23 11:29:52,702 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:52,703 INFO L146 ILogger]: Finished difference Result 296 states and 311 transitions. [2019-05-23 11:29:52,704 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:29:52,704 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 100 [2019-05-23 11:29:52,705 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:52,706 INFO L146 ILogger]: With dead ends: 296 [2019-05-23 11:29:52,707 INFO L146 ILogger]: Without dead ends: 267 [2019-05-23 11:29:52,708 INFO L146 ILogger]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:29:52,708 INFO L146 ILogger]: Start minimizeSevpa. Operand 267 states. [2019-05-23 11:29:52,719 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 267 to 240. [2019-05-23 11:29:52,719 INFO L146 ILogger]: Start removeUnreachable. Operand 240 states. [2019-05-23 11:29:52,720 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 240 states to 240 states and 253 transitions. [2019-05-23 11:29:52,721 INFO L146 ILogger]: Start accepts. Automaton has 240 states and 253 transitions. Word has length 100 [2019-05-23 11:29:52,721 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:52,721 INFO L146 ILogger]: Abstraction has 240 states and 253 transitions. [2019-05-23 11:29:52,721 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:29:52,721 INFO L146 ILogger]: Start isEmpty. Operand 240 states and 253 transitions. [2019-05-23 11:29:52,723 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 101 [2019-05-23 11:29:52,723 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:52,723 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, 1, 1, 1, 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 11:29:52,724 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:52,724 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:52,724 INFO L146 ILogger]: Analyzing trace with hash -2021841309, now seen corresponding path program 7 times [2019-05-23 11:29:52,724 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:52,724 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:52,725 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,725 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:52,725 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,739 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:52,963 INFO L146 ILogger]: Checked inductivity of 58 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:29:52,963 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:52,963 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 11:29:52,973 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:53,008 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:53,009 INFO L146 ILogger]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:53,012 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:53,173 INFO L146 ILogger]: Checked inductivity of 58 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:29:53,192 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:53,192 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:29:53,192 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:29:53,193 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:29:53,193 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:29:53,193 INFO L146 ILogger]: Start difference. First operand 240 states and 253 transitions. Second operand 20 states. [2019-05-23 11:29:53,841 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:53,842 INFO L146 ILogger]: Finished difference Result 302 states and 314 transitions. [2019-05-23 11:29:53,842 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:29:53,842 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 100 [2019-05-23 11:29:53,842 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:53,843 INFO L146 ILogger]: With dead ends: 302 [2019-05-23 11:29:53,843 INFO L146 ILogger]: Without dead ends: 257 [2019-05-23 11:29:53,844 INFO L146 ILogger]: 0 DeclaredPredicates, 124 GetRequests, 94 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 11:29:53,844 INFO L146 ILogger]: Start minimizeSevpa. Operand 257 states. [2019-05-23 11:29:53,859 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 257 to 224. [2019-05-23 11:29:53,859 INFO L146 ILogger]: Start removeUnreachable. Operand 224 states. [2019-05-23 11:29:53,860 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 224 states to 224 states and 235 transitions. [2019-05-23 11:29:53,860 INFO L146 ILogger]: Start accepts. Automaton has 224 states and 235 transitions. Word has length 100 [2019-05-23 11:29:53,860 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:53,860 INFO L146 ILogger]: Abstraction has 224 states and 235 transitions. [2019-05-23 11:29:53,860 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:29:53,861 INFO L146 ILogger]: Start isEmpty. Operand 224 states and 235 transitions. [2019-05-23 11:29:53,862 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 101 [2019-05-23 11:29:53,862 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:53,862 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, 1, 1, 1, 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 11:29:53,863 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:53,863 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:53,863 INFO L146 ILogger]: Analyzing trace with hash 1760794922, now seen corresponding path program 8 times [2019-05-23 11:29:53,863 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:53,863 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:53,864 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:53,864 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:53,864 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:53,874 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:54,110 INFO L146 ILogger]: Checked inductivity of 58 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:29:54,110 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:54,110 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:29:54,120 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:54,144 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:54,145 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:54,146 INFO L146 ILogger]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:54,148 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:54,359 INFO L146 ILogger]: Checked inductivity of 58 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:29:54,377 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:54,378 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:29:54,378 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:29:54,379 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:29:54,379 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:29:54,379 INFO L146 ILogger]: Start difference. First operand 224 states and 235 transitions. Second operand 20 states. [2019-05-23 11:29:54,836 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:54,837 INFO L146 ILogger]: Finished difference Result 302 states and 312 transitions. [2019-05-23 11:29:54,837 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:29:54,837 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 100 [2019-05-23 11:29:54,838 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:54,839 INFO L146 ILogger]: With dead ends: 302 [2019-05-23 11:29:54,840 INFO L146 ILogger]: Without dead ends: 241 [2019-05-23 11:29:54,841 INFO L146 ILogger]: 0 DeclaredPredicates, 124 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:29:54,841 INFO L146 ILogger]: Start minimizeSevpa. Operand 241 states. [2019-05-23 11:29:54,847 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 241 to 216. [2019-05-23 11:29:54,848 INFO L146 ILogger]: Start removeUnreachable. Operand 216 states. [2019-05-23 11:29:54,848 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 216 states to 216 states and 225 transitions. [2019-05-23 11:29:54,849 INFO L146 ILogger]: Start accepts. Automaton has 216 states and 225 transitions. Word has length 100 [2019-05-23 11:29:54,849 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:54,849 INFO L146 ILogger]: Abstraction has 216 states and 225 transitions. [2019-05-23 11:29:54,849 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:29:54,849 INFO L146 ILogger]: Start isEmpty. Operand 216 states and 225 transitions. [2019-05-23 11:29:54,850 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 101 [2019-05-23 11:29:54,850 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:54,851 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, 1, 1, 1, 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 11:29:54,851 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:54,851 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:54,851 INFO L146 ILogger]: Analyzing trace with hash -145646095, now seen corresponding path program 9 times [2019-05-23 11:29:54,851 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:54,852 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:54,852 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:54,852 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:54,853 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:54,862 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:55,100 INFO L146 ILogger]: Checked inductivity of 58 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:29:55,100 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:55,100 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 11:29:55,110 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:55,138 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:29:55,138 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:55,139 INFO L146 ILogger]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:55,140 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:55,295 INFO L146 ILogger]: Checked inductivity of 58 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-05-23 11:29:55,315 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:55,315 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:29:55,315 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:29:55,316 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:29:55,316 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:29:55,316 INFO L146 ILogger]: Start difference. First operand 216 states and 225 transitions. Second operand 24 states. [2019-05-23 11:29:56,099 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:56,099 INFO L146 ILogger]: Finished difference Result 298 states and 309 transitions. [2019-05-23 11:29:56,100 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:29:56,100 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 100 [2019-05-23 11:29:56,100 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:56,101 INFO L146 ILogger]: With dead ends: 298 [2019-05-23 11:29:56,101 INFO L146 ILogger]: Without dead ends: 221 [2019-05-23 11:29:56,103 INFO L146 ILogger]: 0 DeclaredPredicates, 137 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=309, Invalid=2043, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:29:56,103 INFO L146 ILogger]: Start minimizeSevpa. Operand 221 states. [2019-05-23 11:29:56,108 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 221 to 168. [2019-05-23 11:29:56,108 INFO L146 ILogger]: Start removeUnreachable. Operand 168 states. [2019-05-23 11:29:56,108 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 168 states to 168 states and 176 transitions. [2019-05-23 11:29:56,109 INFO L146 ILogger]: Start accepts. Automaton has 168 states and 176 transitions. Word has length 100 [2019-05-23 11:29:56,109 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:56,109 INFO L146 ILogger]: Abstraction has 168 states and 176 transitions. [2019-05-23 11:29:56,109 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:29:56,109 INFO L146 ILogger]: Start isEmpty. Operand 168 states and 176 transitions. [2019-05-23 11:29:56,110 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:29:56,110 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:56,111 INFO L146 ILogger]: trace histogram [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, 1, 1, 1, 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 11:29:56,111 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:56,111 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:56,111 INFO L146 ILogger]: Analyzing trace with hash 1308792599, now seen corresponding path program 10 times [2019-05-23 11:29:56,111 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:56,111 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:56,112 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:56,112 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:56,112 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:56,122 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:56,269 INFO L146 ILogger]: Checked inductivity of 69 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-05-23 11:29:56,269 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:56,269 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 11:29:56,278 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:56,302 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:56,303 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:56,303 INFO L146 ILogger]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:56,304 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:56,704 INFO L146 ILogger]: Checked inductivity of 69 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-05-23 11:29:56,733 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:56,733 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:29:56,733 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:29:56,733 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:29:56,734 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:29:56,734 INFO L146 ILogger]: Start difference. First operand 168 states and 176 transitions. Second operand 20 states. [2019-05-23 11:29:57,344 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:57,344 INFO L146 ILogger]: Finished difference Result 225 states and 235 transitions. [2019-05-23 11:29:57,345 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:29:57,345 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 105 [2019-05-23 11:29:57,345 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:57,346 INFO L146 ILogger]: With dead ends: 225 [2019-05-23 11:29:57,346 INFO L146 ILogger]: Without dead ends: 125 [2019-05-23 11:29:57,348 INFO L146 ILogger]: 0 DeclaredPredicates, 137 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=268, Invalid=1292, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:29:57,348 INFO L146 ILogger]: Start minimizeSevpa. Operand 125 states. [2019-05-23 11:29:57,352 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 125 to 120. [2019-05-23 11:29:57,352 INFO L146 ILogger]: Start removeUnreachable. Operand 120 states. [2019-05-23 11:29:57,353 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2019-05-23 11:29:57,353 INFO L146 ILogger]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 105 [2019-05-23 11:29:57,354 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:57,354 INFO L146 ILogger]: Abstraction has 120 states and 124 transitions. [2019-05-23 11:29:57,354 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:29:57,354 INFO L146 ILogger]: Start isEmpty. Operand 120 states and 124 transitions. [2019-05-23 11:29:57,356 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 120 [2019-05-23 11:29:57,356 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:57,356 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, 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] [2019-05-23 11:29:57,356 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:57,357 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:57,357 INFO L146 ILogger]: Analyzing trace with hash 1072746430, now seen corresponding path program 11 times [2019-05-23 11:29:57,357 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:57,357 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:57,358 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:57,358 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:57,359 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:57,370 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:58,353 INFO L146 ILogger]: Checked inductivity of 99 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:29:58,354 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:58,354 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 11:29:58,364 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:58,403 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:29:58,403 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:58,404 INFO L146 ILogger]: Trace formula consists of 193 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:58,406 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:58,537 INFO L146 ILogger]: Checked inductivity of 99 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-05-23 11:29:58,555 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:58,556 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:29:58,556 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:29:58,556 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:29:58,557 INFO L146 ILogger]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:29:58,557 INFO L146 ILogger]: Start difference. First operand 120 states and 124 transitions. Second operand 21 states. [2019-05-23 11:29:59,420 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:59,420 INFO L146 ILogger]: Finished difference Result 138 states and 142 transitions. [2019-05-23 11:29:59,421 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:29:59,421 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 119 [2019-05-23 11:29:59,421 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:59,422 INFO L146 ILogger]: With dead ends: 138 [2019-05-23 11:29:59,423 INFO L146 ILogger]: Without dead ends: 132 [2019-05-23 11:29:59,424 INFO L146 ILogger]: 0 DeclaredPredicates, 157 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=316, Invalid=1576, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:29:59,425 INFO L146 ILogger]: Start minimizeSevpa. Operand 132 states. [2019-05-23 11:29:59,428 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 132 to 127. [2019-05-23 11:29:59,428 INFO L146 ILogger]: Start removeUnreachable. Operand 127 states. [2019-05-23 11:29:59,429 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 127 states to 127 states and 131 transitions. [2019-05-23 11:29:59,429 INFO L146 ILogger]: Start accepts. Automaton has 127 states and 131 transitions. Word has length 119 [2019-05-23 11:29:59,429 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:59,429 INFO L146 ILogger]: Abstraction has 127 states and 131 transitions. [2019-05-23 11:29:59,429 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:29:59,429 INFO L146 ILogger]: Start isEmpty. Operand 127 states and 131 transitions. [2019-05-23 11:29:59,430 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 127 [2019-05-23 11:29:59,430 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:59,431 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, 1, 1, 1, 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 11:29:59,431 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:59,431 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:59,431 INFO L146 ILogger]: Analyzing trace with hash 990545639, now seen corresponding path program 12 times [2019-05-23 11:29:59,432 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:59,432 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:59,432 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:59,433 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:59,433 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:59,455 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:01,399 WARN L146 ILogger]: Spent 145.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2019-05-23 11:30:03,300 INFO L146 ILogger]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:03,301 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:03,301 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 11:30:03,310 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:03,342 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:30:03,342 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:03,344 INFO L146 ILogger]: Trace formula consists of 204 conjuncts, 99 conjunts are in the unsatisfiable core [2019-05-23 11:30:03,347 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:03,387 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:30:03,387 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:03,407 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:03,408 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:30:03,409 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:18 [2019-05-23 11:30:11,448 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:11,449 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2019-05-23 11:30:11,449 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:11,454 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:11,455 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:11,455 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:24, output treesize:3 [2019-05-23 11:30:11,691 INFO L146 ILogger]: Checked inductivity of 114 backedges. 9 proven. 96 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:30:11,710 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:11,711 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 39] total 85 [2019-05-23 11:30:11,711 INFO L146 ILogger]: Interpolant automaton has 85 states [2019-05-23 11:30:11,712 INFO L146 ILogger]: Constructing interpolant automaton starting with 85 interpolants. [2019-05-23 11:30:11,714 INFO L146 ILogger]: CoverageRelationStatistics Valid=330, Invalid=6801, Unknown=9, NotChecked=0, Total=7140 [2019-05-23 11:30:11,714 INFO L146 ILogger]: Start difference. First operand 127 states and 131 transitions. Second operand 85 states. [2019-05-23 11:30:13,899 WARN L146 ILogger]: Spent 381.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2019-05-23 11:30:15,023 WARN L146 ILogger]: Spent 711.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2019-05-23 11:30:15,809 WARN L146 ILogger]: Spent 722.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2019-05-23 11:30:16,836 WARN L146 ILogger]: Spent 692.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2019-05-23 11:30:17,560 WARN L146 ILogger]: Spent 672.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2019-05-23 11:30:18,365 WARN L146 ILogger]: Spent 700.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2019-05-23 11:30:21,592 WARN L146 ILogger]: Spent 382.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 25 [2019-05-23 11:30:22,677 WARN L146 ILogger]: Spent 715.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2019-05-23 11:30:23,553 WARN L146 ILogger]: Spent 717.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2019-05-23 11:30:24,349 WARN L146 ILogger]: Spent 700.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2019-05-23 11:30:25,203 WARN L146 ILogger]: Spent 694.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2019-05-23 11:30:27,529 WARN L146 ILogger]: Spent 724.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2019-05-23 11:30:28,316 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:28,316 INFO L146 ILogger]: Finished difference Result 220 states and 227 transitions. [2019-05-23 11:30:28,316 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-05-23 11:30:28,316 INFO L146 ILogger]: Start accepts. Automaton has 85 states. Word has length 126 [2019-05-23 11:30:28,317 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:28,318 INFO L146 ILogger]: With dead ends: 220 [2019-05-23 11:30:28,319 INFO L146 ILogger]: Without dead ends: 214 [2019-05-23 11:30:28,324 INFO L146 ILogger]: 0 DeclaredPredicates, 227 GetRequests, 90 SyntacticMatches, 10 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4186 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=713, Invalid=15790, Unknown=9, NotChecked=0, Total=16512 [2019-05-23 11:30:28,324 INFO L146 ILogger]: Start minimizeSevpa. Operand 214 states. [2019-05-23 11:30:28,330 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 214 to 188. [2019-05-23 11:30:28,330 INFO L146 ILogger]: Start removeUnreachable. Operand 188 states. [2019-05-23 11:30:28,330 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 188 states to 188 states and 195 transitions. [2019-05-23 11:30:28,331 INFO L146 ILogger]: Start accepts. Automaton has 188 states and 195 transitions. Word has length 126 [2019-05-23 11:30:28,331 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:28,331 INFO L146 ILogger]: Abstraction has 188 states and 195 transitions. [2019-05-23 11:30:28,331 INFO L146 ILogger]: Interpolant automaton has 85 states. [2019-05-23 11:30:28,331 INFO L146 ILogger]: Start isEmpty. Operand 188 states and 195 transitions. [2019-05-23 11:30:28,332 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 134 [2019-05-23 11:30:28,333 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:28,333 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 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 11:30:28,333 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:28,333 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:28,333 INFO L146 ILogger]: Analyzing trace with hash -604692578, now seen corresponding path program 13 times [2019-05-23 11:30:28,334 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:28,334 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:28,334 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:28,335 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:28,335 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:28,346 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:28,530 INFO L146 ILogger]: Checked inductivity of 136 backedges. 33 proven. 31 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:28,530 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:28,530 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 11:30:28,539 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:28,575 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:28,576 INFO L146 ILogger]: Trace formula consists of 215 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:28,578 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:29,124 INFO L146 ILogger]: Checked inductivity of 136 backedges. 46 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:29,142 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:29,143 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:30:29,143 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:30:29,143 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:30:29,143 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:30:29,144 INFO L146 ILogger]: Start difference. First operand 188 states and 195 transitions. Second operand 26 states. [2019-05-23 11:30:29,894 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:29,894 INFO L146 ILogger]: Finished difference Result 389 states and 403 transitions. [2019-05-23 11:30:29,894 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:30:29,895 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 133 [2019-05-23 11:30:29,895 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:29,896 INFO L146 ILogger]: With dead ends: 389 [2019-05-23 11:30:29,896 INFO L146 ILogger]: Without dead ends: 353 [2019-05-23 11:30:29,897 INFO L146 ILogger]: 0 DeclaredPredicates, 166 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=288, Invalid=1518, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:30:29,898 INFO L146 ILogger]: Start minimizeSevpa. Operand 353 states. [2019-05-23 11:30:29,907 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 353 to 323. [2019-05-23 11:30:29,907 INFO L146 ILogger]: Start removeUnreachable. Operand 323 states. [2019-05-23 11:30:29,908 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 323 states to 323 states and 336 transitions. [2019-05-23 11:30:29,908 INFO L146 ILogger]: Start accepts. Automaton has 323 states and 336 transitions. Word has length 133 [2019-05-23 11:30:29,908 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:29,909 INFO L146 ILogger]: Abstraction has 323 states and 336 transitions. [2019-05-23 11:30:29,909 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:30:29,909 INFO L146 ILogger]: Start isEmpty. Operand 323 states and 336 transitions. [2019-05-23 11:30:29,910 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 134 [2019-05-23 11:30:29,910 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:29,910 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 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 11:30:29,911 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:29,911 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:29,911 INFO L146 ILogger]: Analyzing trace with hash 14164215, now seen corresponding path program 14 times [2019-05-23 11:30:29,911 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:29,911 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:29,912 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:29,912 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:29,912 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:29,923 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:30,348 INFO L146 ILogger]: Checked inductivity of 136 backedges. 33 proven. 31 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:30,349 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:30,349 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 11:30:30,358 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:30,397 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:30,398 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:30,398 INFO L146 ILogger]: Trace formula consists of 215 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:30,402 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:30,554 INFO L146 ILogger]: Checked inductivity of 136 backedges. 46 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:30,572 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:30,572 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:30:30,573 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:30:30,573 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:30:30,573 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:30:30,573 INFO L146 ILogger]: Start difference. First operand 323 states and 336 transitions. Second operand 26 states. [2019-05-23 11:30:32,052 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:32,053 INFO L146 ILogger]: Finished difference Result 389 states and 401 transitions. [2019-05-23 11:30:32,053 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:30:32,053 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 133 [2019-05-23 11:30:32,054 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:32,055 INFO L146 ILogger]: With dead ends: 389 [2019-05-23 11:30:32,055 INFO L146 ILogger]: Without dead ends: 330 [2019-05-23 11:30:32,057 INFO L146 ILogger]: 0 DeclaredPredicates, 166 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=288, Invalid=1518, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:30:32,058 INFO L146 ILogger]: Start minimizeSevpa. Operand 330 states. [2019-05-23 11:30:32,066 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 330 to 300. [2019-05-23 11:30:32,066 INFO L146 ILogger]: Start removeUnreachable. Operand 300 states. [2019-05-23 11:30:32,067 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 300 states to 300 states and 311 transitions. [2019-05-23 11:30:32,068 INFO L146 ILogger]: Start accepts. Automaton has 300 states and 311 transitions. Word has length 133 [2019-05-23 11:30:32,068 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:32,068 INFO L146 ILogger]: Abstraction has 300 states and 311 transitions. [2019-05-23 11:30:32,068 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:30:32,068 INFO L146 ILogger]: Start isEmpty. Operand 300 states and 311 transitions. [2019-05-23 11:30:32,069 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 134 [2019-05-23 11:30:32,069 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:32,070 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 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 11:30:32,070 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:32,070 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:32,070 INFO L146 ILogger]: Analyzing trace with hash -1431393410, now seen corresponding path program 15 times [2019-05-23 11:30:32,070 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:32,071 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:32,071 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:32,071 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:32,072 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:32,082 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:32,604 INFO L146 ILogger]: Checked inductivity of 136 backedges. 33 proven. 31 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:32,604 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:32,604 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 11:30:32,619 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:32,661 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:30:32,661 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:32,662 INFO L146 ILogger]: Trace formula consists of 215 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:32,665 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:32,897 INFO L146 ILogger]: Checked inductivity of 136 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-05-23 11:30:32,916 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:32,916 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2019-05-23 11:30:32,916 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:30:32,917 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:30:32,917 INFO L146 ILogger]: CoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:32,917 INFO L146 ILogger]: Start difference. First operand 300 states and 311 transitions. Second operand 32 states. [2019-05-23 11:30:34,456 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:34,457 INFO L146 ILogger]: Finished difference Result 460 states and 473 transitions. [2019-05-23 11:30:34,457 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:30:34,457 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 133 [2019-05-23 11:30:34,458 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:34,460 INFO L146 ILogger]: With dead ends: 460 [2019-05-23 11:30:34,460 INFO L146 ILogger]: Without dead ends: 378 [2019-05-23 11:30:34,462 INFO L146 ILogger]: 0 DeclaredPredicates, 188 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1387 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=541, Invalid=4151, Unknown=0, NotChecked=0, Total=4692 [2019-05-23 11:30:34,463 INFO L146 ILogger]: Start minimizeSevpa. Operand 378 states. [2019-05-23 11:30:34,472 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 378 to 322. [2019-05-23 11:30:34,473 INFO L146 ILogger]: Start removeUnreachable. Operand 322 states. [2019-05-23 11:30:34,473 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 322 states to 322 states and 333 transitions. [2019-05-23 11:30:34,474 INFO L146 ILogger]: Start accepts. Automaton has 322 states and 333 transitions. Word has length 133 [2019-05-23 11:30:34,474 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:34,474 INFO L146 ILogger]: Abstraction has 322 states and 333 transitions. [2019-05-23 11:30:34,474 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:30:34,474 INFO L146 ILogger]: Start isEmpty. Operand 322 states and 333 transitions. [2019-05-23 11:30:34,475 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 134 [2019-05-23 11:30:34,475 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:34,476 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 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 11:30:34,476 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:34,476 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:34,476 INFO L146 ILogger]: Analyzing trace with hash 200227095, now seen corresponding path program 16 times [2019-05-23 11:30:34,476 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:34,476 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:34,477 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:34,477 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:34,477 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:34,487 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:34,669 INFO L146 ILogger]: Checked inductivity of 136 backedges. 33 proven. 31 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:34,669 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:34,669 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 11:30:34,680 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:34,711 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:34,712 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:34,712 INFO L146 ILogger]: Trace formula consists of 213 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:34,714 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:35,107 INFO L146 ILogger]: Checked inductivity of 136 backedges. 46 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:35,125 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:35,126 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:30:35,126 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:30:35,126 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:30:35,127 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:30:35,127 INFO L146 ILogger]: Start difference. First operand 322 states and 333 transitions. Second operand 26 states. [2019-05-23 11:30:35,573 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:35,574 INFO L146 ILogger]: Finished difference Result 337 states and 347 transitions. [2019-05-23 11:30:35,574 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:30:35,574 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 133 [2019-05-23 11:30:35,575 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:35,576 INFO L146 ILogger]: With dead ends: 337 [2019-05-23 11:30:35,576 INFO L146 ILogger]: Without dead ends: 232 [2019-05-23 11:30:35,577 INFO L146 ILogger]: 0 DeclaredPredicates, 164 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=267, Invalid=1373, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:30:35,577 INFO L146 ILogger]: Start minimizeSevpa. Operand 232 states. [2019-05-23 11:30:35,582 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 232 to 223. [2019-05-23 11:30:35,582 INFO L146 ILogger]: Start removeUnreachable. Operand 223 states. [2019-05-23 11:30:35,583 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 223 states to 223 states and 232 transitions. [2019-05-23 11:30:35,583 INFO L146 ILogger]: Start accepts. Automaton has 223 states and 232 transitions. Word has length 133 [2019-05-23 11:30:35,583 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:35,583 INFO L146 ILogger]: Abstraction has 223 states and 232 transitions. [2019-05-23 11:30:35,584 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:30:35,584 INFO L146 ILogger]: Start isEmpty. Operand 223 states and 232 transitions. [2019-05-23 11:30:35,584 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 139 [2019-05-23 11:30:35,585 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:35,585 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2019-05-23 11:30:35,585 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:35,585 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:35,586 INFO L146 ILogger]: Analyzing trace with hash -1707895446, now seen corresponding path program 17 times [2019-05-23 11:30:35,586 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:35,586 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:35,587 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:35,587 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:35,587 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:35,599 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:35,837 INFO L146 ILogger]: Checked inductivity of 152 backedges. 9 proven. 49 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2019-05-23 11:30:35,837 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:35,837 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 11:30:35,846 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:35,891 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:30:35,891 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:35,892 INFO L146 ILogger]: Trace formula consists of 222 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:35,894 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:36,047 INFO L146 ILogger]: Checked inductivity of 152 backedges. 18 proven. 40 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2019-05-23 11:30:36,074 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:36,074 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:30:36,075 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:30:36,075 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:30:36,075 INFO L146 ILogger]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:30:36,075 INFO L146 ILogger]: Start difference. First operand 223 states and 232 transitions. Second operand 26 states. [2019-05-23 11:30:37,304 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:37,304 INFO L146 ILogger]: Finished difference Result 294 states and 305 transitions. [2019-05-23 11:30:37,304 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:30:37,304 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 138 [2019-05-23 11:30:37,305 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:37,306 INFO L146 ILogger]: With dead ends: 294 [2019-05-23 11:30:37,306 INFO L146 ILogger]: Without dead ends: 158 [2019-05-23 11:30:37,307 INFO L146 ILogger]: 0 DeclaredPredicates, 182 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=437, Invalid=2425, Unknown=0, NotChecked=0, Total=2862 [2019-05-23 11:30:37,307 INFO L146 ILogger]: Start minimizeSevpa. Operand 158 states. [2019-05-23 11:30:37,311 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 158 to 153. [2019-05-23 11:30:37,311 INFO L146 ILogger]: Start removeUnreachable. Operand 153 states. [2019-05-23 11:30:37,312 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2019-05-23 11:30:37,312 INFO L146 ILogger]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 138 [2019-05-23 11:30:37,312 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:37,312 INFO L146 ILogger]: Abstraction has 153 states and 157 transitions. [2019-05-23 11:30:37,312 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:30:37,313 INFO L146 ILogger]: Start isEmpty. Operand 153 states and 157 transitions. [2019-05-23 11:30:37,313 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:30:37,313 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:37,313 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, 4, 4, 4, 4, 4, 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] [2019-05-23 11:30:37,314 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:37,314 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:37,314 INFO L146 ILogger]: Analyzing trace with hash -218009053, now seen corresponding path program 18 times [2019-05-23 11:30:37,314 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:37,314 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:37,315 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:37,315 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:37,315 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:37,327 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:37,584 INFO L146 ILogger]: Checked inductivity of 196 backedges. 9 proven. 49 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2019-05-23 11:30:37,584 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:37,584 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:30:37,592 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:37,634 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:30:37,634 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:37,636 INFO L146 ILogger]: Trace formula consists of 244 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:37,638 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:37,888 INFO L146 ILogger]: Checked inductivity of 196 backedges. 46 proven. 24 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-05-23 11:30:37,906 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:37,906 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2019-05-23 11:30:37,907 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:30:37,907 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:30:37,907 INFO L146 ILogger]: CoverageRelationStatistics Valid=119, Invalid=873, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:37,907 INFO L146 ILogger]: Start difference. First operand 153 states and 157 transitions. Second operand 32 states. [2019-05-23 11:30:38,762 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:38,762 INFO L146 ILogger]: Finished difference Result 201 states and 206 transitions. [2019-05-23 11:30:38,762 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:30:38,763 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 152 [2019-05-23 11:30:38,763 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:38,764 INFO L146 ILogger]: With dead ends: 201 [2019-05-23 11:30:38,764 INFO L146 ILogger]: Without dead ends: 165 [2019-05-23 11:30:38,765 INFO L146 ILogger]: 0 DeclaredPredicates, 194 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=390, Invalid=2690, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:30:38,766 INFO L146 ILogger]: Start minimizeSevpa. Operand 165 states. [2019-05-23 11:30:38,770 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 165 to 160. [2019-05-23 11:30:38,770 INFO L146 ILogger]: Start removeUnreachable. Operand 160 states. [2019-05-23 11:30:38,771 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 160 states to 160 states and 164 transitions. [2019-05-23 11:30:38,771 INFO L146 ILogger]: Start accepts. Automaton has 160 states and 164 transitions. Word has length 152 [2019-05-23 11:30:38,771 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:38,771 INFO L146 ILogger]: Abstraction has 160 states and 164 transitions. [2019-05-23 11:30:38,771 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:30:38,771 INFO L146 ILogger]: Start isEmpty. Operand 160 states and 164 transitions. [2019-05-23 11:30:38,772 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 160 [2019-05-23 11:30:38,772 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:38,772 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, 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] [2019-05-23 11:30:38,773 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:38,773 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:38,773 INFO L146 ILogger]: Analyzing trace with hash -1805069975, now seen corresponding path program 19 times [2019-05-23 11:30:38,773 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:38,773 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:38,774 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:38,774 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:38,774 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:38,799 INFO L146 ILogger]: Conjunction of SSA is unsat