java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_copy6_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:14:16,768 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:14:16,772 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:14:16,788 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:14:16,788 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:14:16,789 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:14:16,791 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:14:16,793 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:14:16,794 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:14:16,795 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:14:16,796 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:14:16,797 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:14:16,798 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:14:16,799 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:14:16,800 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:14:16,801 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:14:16,802 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:14:16,805 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:14:16,813 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:14:16,815 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:14:16,820 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:14:16,821 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:14:16,826 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:14:16,829 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:14:16,829 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:14:16,830 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:14:16,831 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:14:16,832 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:14:16,832 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:14:16,835 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:14:16,836 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:14:16,840 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:14:16,841 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:14:16,841 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:14:16,842 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:14:16,842 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:14:16,842 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:14:16,844 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:14:16,845 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:14:16,845 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:14:16,875 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:14:16,875 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:14:16,877 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:14:16,877 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:14:16,877 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:14:16,877 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:14:16,878 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:14:16,878 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:14:16,878 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:14:16,878 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:14:16,879 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:14:16,879 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:14:16,879 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:14:16,879 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:14:16,879 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:14:16,880 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:14:16,880 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:14:16,880 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:14:16,880 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:14:16,880 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:14:16,881 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:14:16,882 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:14:16,882 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:14:16,883 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:14:16,883 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:14:16,883 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:14:16,883 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:14:16,884 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:14:16,884 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 11:14:16,925 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:14:16,937 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:14:16,940 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:14:16,942 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:14:16,942 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:14:16,943 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copy6_false-unreach-call_ground.i [2019-05-23 11:14:16,999 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e6cbd707/c1ea9a126b4844fd9369946ecc79dca9/FLAGa53aef022 [2019-05-23 11:14:17,417 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:14:17,418 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copy6_false-unreach-call_ground.i [2019-05-23 11:14:17,425 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e6cbd707/c1ea9a126b4844fd9369946ecc79dca9/FLAGa53aef022 [2019-05-23 11:14:17,777 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e6cbd707/c1ea9a126b4844fd9369946ecc79dca9 [2019-05-23 11:14:17,785 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:14:17,787 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:14:17,788 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:14:17,788 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:14:17,791 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:14:17,792 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,796 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1341db38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17, skipping insertion in model container [2019-05-23 11:14:17,796 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,804 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:14:17,831 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:14:18,020 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:14:18,027 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:14:18,062 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:14:18,085 INFO L146 ILogger]: Completed translation [2019-05-23 11:14:18,085 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:18 WrapperNode [2019-05-23 11:14:18,085 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:14:18,086 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:14:18,086 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:14:18,086 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:14:18,092 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:18" (1/1) ... [2019-05-23 11:14:18,102 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:18" (1/1) ... [2019-05-23 11:14:18,127 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:14:18,128 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:14:18,128 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:14:18,128 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:14:18,137 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:18" (1/1) ... [2019-05-23 11:14:18,137 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:18" (1/1) ... [2019-05-23 11:14:18,140 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:18" (1/1) ... [2019-05-23 11:14:18,140 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:18" (1/1) ... [2019-05-23 11:14:18,148 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:18" (1/1) ... [2019-05-23 11:14:18,238 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:18" (1/1) ... [2019-05-23 11:14:18,240 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:18" (1/1) ... [2019-05-23 11:14:18,242 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:14:18,243 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:14:18,243 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:14:18,243 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:14:18,244 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:18" (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 11:14:18,305 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:14:18,305 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:14:18,305 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:14:18,305 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:14:18,305 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:14:18,305 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:14:19,012 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:14:19,013 INFO L146 ILogger]: Removed 14 assume(true) statements. [2019-05-23 11:14:19,014 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:14:19 BoogieIcfgContainer [2019-05-23 11:14:19,014 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:14:19,015 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:14:19,015 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:14:19,018 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:14:19,019 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:14:17" (1/3) ... [2019-05-23 11:14:19,019 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714e7664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:14:19, skipping insertion in model container [2019-05-23 11:14:19,020 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:18" (2/3) ... [2019-05-23 11:14:19,020 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714e7664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:14:19, skipping insertion in model container [2019-05-23 11:14:19,020 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:14:19" (3/3) ... [2019-05-23 11:14:19,022 INFO L146 ILogger]: Analyzing ICFG standard_copy6_false-unreach-call_ground.i [2019-05-23 11:14:19,030 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:14:19,038 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:14:19,056 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:14:19,089 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:14:19,090 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:14:19,091 INFO L146 ILogger]: Hoare is true [2019-05-23 11:14:19,091 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:14:19,091 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:14:19,091 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:14:19,091 INFO L146 ILogger]: Difference is false [2019-05-23 11:14:19,092 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:14:19,092 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:14:19,110 INFO L146 ILogger]: Start isEmpty. Operand 106 states. [2019-05-23 11:14:19,119 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:14:19,120 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:19,121 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:19,123 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:19,129 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:19,129 INFO L146 ILogger]: Analyzing trace with hash 626211038, now seen corresponding path program 1 times [2019-05-23 11:14:19,131 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:19,132 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:19,171 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,171 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,171 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,221 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,283 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 11:14:19,286 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:14:19,287 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:14:19,289 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:14:19,299 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:14:19,300 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:14:19,302 INFO L146 ILogger]: Start difference. First operand 106 states. Second operand 2 states. [2019-05-23 11:14:19,325 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:19,325 INFO L146 ILogger]: Finished difference Result 189 states and 219 transitions. [2019-05-23 11:14:19,325 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:14:19,327 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 37 [2019-05-23 11:14:19,327 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:19,338 INFO L146 ILogger]: With dead ends: 189 [2019-05-23 11:14:19,338 INFO L146 ILogger]: Without dead ends: 88 [2019-05-23 11:14:19,341 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 11:14:19,360 INFO L146 ILogger]: Start minimizeSevpa. Operand 88 states. [2019-05-23 11:14:19,381 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 88 to 88. [2019-05-23 11:14:19,383 INFO L146 ILogger]: Start removeUnreachable. Operand 88 states. [2019-05-23 11:14:19,386 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2019-05-23 11:14:19,387 INFO L146 ILogger]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 37 [2019-05-23 11:14:19,389 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:19,389 INFO L146 ILogger]: Abstraction has 88 states and 95 transitions. [2019-05-23 11:14:19,389 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:14:19,390 INFO L146 ILogger]: Start isEmpty. Operand 88 states and 95 transitions. [2019-05-23 11:14:19,391 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:14:19,392 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:19,392 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:19,392 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:19,394 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:19,394 INFO L146 ILogger]: Analyzing trace with hash 1457763072, now seen corresponding path program 1 times [2019-05-23 11:14:19,394 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:19,394 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:19,395 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,396 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,397 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,449 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,599 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 11:14:19,599 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:14:19,599 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:14:19,601 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:14:19,602 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:14:19,603 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:14:19,603 INFO L146 ILogger]: Start difference. First operand 88 states and 95 transitions. Second operand 3 states. [2019-05-23 11:14:19,785 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:19,786 INFO L146 ILogger]: Finished difference Result 162 states and 176 transitions. [2019-05-23 11:14:19,786 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:14:19,787 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 37 [2019-05-23 11:14:19,787 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:19,788 INFO L146 ILogger]: With dead ends: 162 [2019-05-23 11:14:19,789 INFO L146 ILogger]: Without dead ends: 97 [2019-05-23 11:14:19,790 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:14:19,791 INFO L146 ILogger]: Start minimizeSevpa. Operand 97 states. [2019-05-23 11:14:19,799 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 97 to 89. [2019-05-23 11:14:19,799 INFO L146 ILogger]: Start removeUnreachable. Operand 89 states. [2019-05-23 11:14:19,801 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2019-05-23 11:14:19,801 INFO L146 ILogger]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 37 [2019-05-23 11:14:19,801 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:19,801 INFO L146 ILogger]: Abstraction has 89 states and 96 transitions. [2019-05-23 11:14:19,801 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:14:19,802 INFO L146 ILogger]: Start isEmpty. Operand 89 states and 96 transitions. [2019-05-23 11:14:19,803 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 48 [2019-05-23 11:14:19,803 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:19,804 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:19,804 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:19,804 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:19,805 INFO L146 ILogger]: Analyzing trace with hash -886658426, now seen corresponding path program 1 times [2019-05-23 11:14:19,805 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:19,805 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:19,806 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,806 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,806 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,831 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,967 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 11:14:19,968 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:19,968 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 11:14:19,985 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:20,034 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:20,036 INFO L146 ILogger]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:14:20,043 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:20,173 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 11:14:20,205 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:14:20,206 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:14:20,206 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:14:20,207 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:14:20,207 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:14:20,207 INFO L146 ILogger]: Start difference. First operand 89 states and 96 transitions. Second operand 6 states. [2019-05-23 11:14:21,093 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:21,094 INFO L146 ILogger]: Finished difference Result 208 states and 228 transitions. [2019-05-23 11:14:21,094 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:14:21,094 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 47 [2019-05-23 11:14:21,095 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:21,096 INFO L146 ILogger]: With dead ends: 208 [2019-05-23 11:14:21,096 INFO L146 ILogger]: Without dead ends: 143 [2019-05-23 11:14:21,097 INFO L146 ILogger]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:14:21,098 INFO L146 ILogger]: Start minimizeSevpa. Operand 143 states. [2019-05-23 11:14:21,105 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 143 to 105. [2019-05-23 11:14:21,106 INFO L146 ILogger]: Start removeUnreachable. Operand 105 states. [2019-05-23 11:14:21,107 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 105 states to 105 states and 112 transitions. [2019-05-23 11:14:21,107 INFO L146 ILogger]: Start accepts. Automaton has 105 states and 112 transitions. Word has length 47 [2019-05-23 11:14:21,107 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:21,108 INFO L146 ILogger]: Abstraction has 105 states and 112 transitions. [2019-05-23 11:14:21,108 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:14:21,108 INFO L146 ILogger]: Start isEmpty. Operand 105 states and 112 transitions. [2019-05-23 11:14:21,111 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 100 [2019-05-23 11:14:21,111 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:21,112 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:21,112 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:21,112 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:21,112 INFO L146 ILogger]: Analyzing trace with hash 1336936065, now seen corresponding path program 1 times [2019-05-23 11:14:21,113 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:21,113 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:21,114 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:21,114 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:21,114 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:21,145 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:21,262 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-05-23 11:14:21,263 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:21,263 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 11:14:21,282 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:21,330 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:21,331 INFO L146 ILogger]: Trace formula consists of 192 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:21,336 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:21,532 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:14:21,552 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:21,552 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:14:21,553 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:14:21,553 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:14:21,555 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:14:21,555 INFO L146 ILogger]: Start difference. First operand 105 states and 112 transitions. Second operand 10 states. [2019-05-23 11:14:22,442 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:22,443 INFO L146 ILogger]: Finished difference Result 231 states and 246 transitions. [2019-05-23 11:14:22,443 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:14:22,444 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 99 [2019-05-23 11:14:22,444 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:22,447 INFO L146 ILogger]: With dead ends: 231 [2019-05-23 11:14:22,447 INFO L146 ILogger]: Without dead ends: 160 [2019-05-23 11:14:22,448 INFO L146 ILogger]: 0 DeclaredPredicates, 109 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:14:22,452 INFO L146 ILogger]: Start minimizeSevpa. Operand 160 states. [2019-05-23 11:14:22,468 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 160 to 122. [2019-05-23 11:14:22,468 INFO L146 ILogger]: Start removeUnreachable. Operand 122 states. [2019-05-23 11:14:22,469 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2019-05-23 11:14:22,470 INFO L146 ILogger]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 99 [2019-05-23 11:14:22,473 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:22,473 INFO L146 ILogger]: Abstraction has 122 states and 129 transitions. [2019-05-23 11:14:22,473 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:14:22,473 INFO L146 ILogger]: Start isEmpty. Operand 122 states and 129 transitions. [2019-05-23 11:14:22,475 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 117 [2019-05-23 11:14:22,475 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:22,476 INFO L146 ILogger]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:22,476 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:22,476 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:22,476 INFO L146 ILogger]: Analyzing trace with hash -347074097, now seen corresponding path program 2 times [2019-05-23 11:14:22,476 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:22,477 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:22,480 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:22,480 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:22,480 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:22,548 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:22,638 INFO L146 ILogger]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:14:22,639 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:22,639 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 11:14:22,650 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:22,724 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:22,724 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:22,726 INFO L146 ILogger]: Trace formula consists of 216 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:14:22,737 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:23,161 INFO L146 ILogger]: Checked inductivity of 47 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-05-23 11:14:23,181 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:23,181 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2019-05-23 11:14:23,182 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:14:23,182 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:14:23,182 INFO L146 ILogger]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:14:23,183 INFO L146 ILogger]: Start difference. First operand 122 states and 129 transitions. Second operand 12 states. [2019-05-23 11:14:23,993 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:23,993 INFO L146 ILogger]: Finished difference Result 250 states and 265 transitions. [2019-05-23 11:14:23,993 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:14:23,994 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 116 [2019-05-23 11:14:23,994 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:23,996 INFO L146 ILogger]: With dead ends: 250 [2019-05-23 11:14:23,996 INFO L146 ILogger]: Without dead ends: 172 [2019-05-23 11:14:23,998 INFO L146 ILogger]: 0 DeclaredPredicates, 128 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:14:23,999 INFO L146 ILogger]: Start minimizeSevpa. Operand 172 states. [2019-05-23 11:14:24,008 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 172 to 139. [2019-05-23 11:14:24,009 INFO L146 ILogger]: Start removeUnreachable. Operand 139 states. [2019-05-23 11:14:24,010 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 139 states to 139 states and 146 transitions. [2019-05-23 11:14:24,010 INFO L146 ILogger]: Start accepts. Automaton has 139 states and 146 transitions. Word has length 116 [2019-05-23 11:14:24,010 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:24,010 INFO L146 ILogger]: Abstraction has 139 states and 146 transitions. [2019-05-23 11:14:24,010 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:14:24,011 INFO L146 ILogger]: Start isEmpty. Operand 139 states and 146 transitions. [2019-05-23 11:14:24,012 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 134 [2019-05-23 11:14:24,013 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:24,013 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:24,013 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:24,014 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:24,014 INFO L146 ILogger]: Analyzing trace with hash -1145428346, now seen corresponding path program 3 times [2019-05-23 11:14:24,014 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:24,014 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:24,015 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,015 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:24,015 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,052 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:24,350 INFO L146 ILogger]: Checked inductivity of 86 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-05-23 11:14:24,350 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:24,350 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 11:14:24,359 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:24,414 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:14:24,414 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:24,416 INFO L146 ILogger]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:14:24,427 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:24,544 INFO L146 ILogger]: Checked inductivity of 86 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-05-23 11:14:24,563 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:24,563 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:14:24,563 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:14:24,563 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:14:24,564 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:14:24,564 INFO L146 ILogger]: Start difference. First operand 139 states and 146 transitions. Second operand 7 states. [2019-05-23 11:14:24,722 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:24,722 INFO L146 ILogger]: Finished difference Result 209 states and 220 transitions. [2019-05-23 11:14:24,722 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:14:24,723 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 133 [2019-05-23 11:14:24,723 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:24,724 INFO L146 ILogger]: With dead ends: 209 [2019-05-23 11:14:24,724 INFO L146 ILogger]: Without dead ends: 166 [2019-05-23 11:14:24,725 INFO L146 ILogger]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:14:24,726 INFO L146 ILogger]: Start minimizeSevpa. Operand 166 states. [2019-05-23 11:14:24,732 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 166 to 146. [2019-05-23 11:14:24,733 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:14:24,733 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 153 transitions. [2019-05-23 11:14:24,733 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 153 transitions. Word has length 133 [2019-05-23 11:14:24,734 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:24,734 INFO L146 ILogger]: Abstraction has 146 states and 153 transitions. [2019-05-23 11:14:24,734 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:14:24,734 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 153 transitions. [2019-05-23 11:14:24,736 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 141 [2019-05-23 11:14:24,736 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:24,737 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:24,737 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:24,737 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:24,737 INFO L146 ILogger]: Analyzing trace with hash 1236085200, now seen corresponding path program 4 times [2019-05-23 11:14:24,737 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:24,738 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:24,738 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,739 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:24,739 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,759 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:24,851 INFO L146 ILogger]: Checked inductivity of 94 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-05-23 11:14:24,852 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:24,852 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 11:14:24,861 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:25,126 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:25,126 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:25,128 INFO L146 ILogger]: Trace formula consists of 250 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:14:25,133 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:25,263 INFO L146 ILogger]: Checked inductivity of 94 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-05-23 11:14:25,283 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:25,283 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 14 [2019-05-23 11:14:25,283 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:14:25,284 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:14:25,284 INFO L146 ILogger]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:14:25,284 INFO L146 ILogger]: Start difference. First operand 146 states and 153 transitions. Second operand 14 states. [2019-05-23 11:14:25,915 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:25,915 INFO L146 ILogger]: Finished difference Result 278 states and 293 transitions. [2019-05-23 11:14:25,915 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:14:25,916 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 140 [2019-05-23 11:14:25,916 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:25,918 INFO L146 ILogger]: With dead ends: 278 [2019-05-23 11:14:25,918 INFO L146 ILogger]: Without dead ends: 186 [2019-05-23 11:14:25,919 INFO L146 ILogger]: 0 DeclaredPredicates, 154 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:14:25,920 INFO L146 ILogger]: Start minimizeSevpa. Operand 186 states. [2019-05-23 11:14:25,925 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 186 to 163. [2019-05-23 11:14:25,925 INFO L146 ILogger]: Start removeUnreachable. Operand 163 states. [2019-05-23 11:14:25,926 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 163 states to 163 states and 170 transitions. [2019-05-23 11:14:25,926 INFO L146 ILogger]: Start accepts. Automaton has 163 states and 170 transitions. Word has length 140 [2019-05-23 11:14:25,927 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:25,927 INFO L146 ILogger]: Abstraction has 163 states and 170 transitions. [2019-05-23 11:14:25,927 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:14:25,927 INFO L146 ILogger]: Start isEmpty. Operand 163 states and 170 transitions. [2019-05-23 11:14:25,929 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 158 [2019-05-23 11:14:25,929 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:25,932 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:25,933 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:25,933 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:25,933 INFO L146 ILogger]: Analyzing trace with hash -2060396155, now seen corresponding path program 5 times [2019-05-23 11:14:25,933 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:25,933 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:25,934 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:25,934 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:25,934 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:25,982 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:26,097 INFO L146 ILogger]: Checked inductivity of 143 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2019-05-23 11:14:26,097 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:26,097 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 11:14:26,106 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:28,750 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:14:28,750 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:28,754 INFO L146 ILogger]: Trace formula consists of 274 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:28,757 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:28,882 INFO L146 ILogger]: Checked inductivity of 143 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2019-05-23 11:14:28,914 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:28,914 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 9 [2019-05-23 11:14:28,915 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:14:28,916 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:14:28,916 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:14:28,916 INFO L146 ILogger]: Start difference. First operand 163 states and 170 transitions. Second operand 9 states. [2019-05-23 11:14:29,422 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:29,422 INFO L146 ILogger]: Finished difference Result 258 states and 271 transitions. [2019-05-23 11:14:29,422 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:14:29,423 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 157 [2019-05-23 11:14:29,423 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:29,424 INFO L146 ILogger]: With dead ends: 258 [2019-05-23 11:14:29,424 INFO L146 ILogger]: Without dead ends: 192 [2019-05-23 11:14:29,425 INFO L146 ILogger]: 0 DeclaredPredicates, 167 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:14:29,426 INFO L146 ILogger]: Start minimizeSevpa. Operand 192 states. [2019-05-23 11:14:29,432 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 192 to 177. [2019-05-23 11:14:29,432 INFO L146 ILogger]: Start removeUnreachable. Operand 177 states. [2019-05-23 11:14:29,433 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 177 states to 177 states and 184 transitions. [2019-05-23 11:14:29,433 INFO L146 ILogger]: Start accepts. Automaton has 177 states and 184 transitions. Word has length 157 [2019-05-23 11:14:29,434 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:29,434 INFO L146 ILogger]: Abstraction has 177 states and 184 transitions. [2019-05-23 11:14:29,434 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:14:29,434 INFO L146 ILogger]: Start isEmpty. Operand 177 states and 184 transitions. [2019-05-23 11:14:29,436 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 172 [2019-05-23 11:14:29,437 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:29,437 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:29,437 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:29,437 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:29,438 INFO L146 ILogger]: Analyzing trace with hash -1138603110, now seen corresponding path program 6 times [2019-05-23 11:14:29,438 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:29,438 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:29,439 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:29,439 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:29,439 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:29,466 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:29,781 INFO L146 ILogger]: Checked inductivity of 166 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2019-05-23 11:14:29,781 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:29,781 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 11:14:29,805 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:29,878 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-05-23 11:14:29,878 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:29,880 INFO L146 ILogger]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:14:29,884 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:30,122 INFO L146 ILogger]: Checked inductivity of 166 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2019-05-23 11:14:30,151 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:30,151 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:14:30,152 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:14:30,153 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:14:30,153 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:14:30,153 INFO L146 ILogger]: Start difference. First operand 177 states and 184 transitions. Second operand 7 states. [2019-05-23 11:14:30,598 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:30,598 INFO L146 ILogger]: Finished difference Result 205 states and 213 transitions. [2019-05-23 11:14:30,599 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:14:30,599 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 171 [2019-05-23 11:14:30,602 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:30,603 INFO L146 ILogger]: With dead ends: 205 [2019-05-23 11:14:30,603 INFO L146 ILogger]: Without dead ends: 189 [2019-05-23 11:14:30,604 INFO L146 ILogger]: 0 DeclaredPredicates, 177 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:14:30,604 INFO L146 ILogger]: Start minimizeSevpa. Operand 189 states. [2019-05-23 11:14:30,609 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 189 to 184. [2019-05-23 11:14:30,609 INFO L146 ILogger]: Start removeUnreachable. Operand 184 states. [2019-05-23 11:14:30,610 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 184 states to 184 states and 191 transitions. [2019-05-23 11:14:30,610 INFO L146 ILogger]: Start accepts. Automaton has 184 states and 191 transitions. Word has length 171 [2019-05-23 11:14:30,611 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:30,611 INFO L146 ILogger]: Abstraction has 184 states and 191 transitions. [2019-05-23 11:14:30,611 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:14:30,611 INFO L146 ILogger]: Start isEmpty. Operand 184 states and 191 transitions. [2019-05-23 11:14:30,620 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 179 [2019-05-23 11:14:30,621 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:30,622 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:30,623 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:30,623 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:30,623 INFO L146 ILogger]: Analyzing trace with hash -1495987307, now seen corresponding path program 7 times [2019-05-23 11:14:30,623 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:30,623 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:30,624 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:30,624 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:30,625 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:30,664 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:30,873 INFO L146 ILogger]: Checked inductivity of 174 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-05-23 11:14:30,873 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:30,873 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 11:14:30,884 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:30,931 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:30,932 INFO L146 ILogger]: Trace formula consists of 304 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:14:30,934 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:30,991 INFO L146 ILogger]: Checked inductivity of 174 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-05-23 11:14:31,010 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:31,010 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:14:31,011 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:14:31,011 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:14:31,011 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:14:31,012 INFO L146 ILogger]: Start difference. First operand 184 states and 191 transitions. Second operand 15 states. [2019-05-23 11:14:31,406 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:31,406 INFO L146 ILogger]: Finished difference Result 322 states and 336 transitions. [2019-05-23 11:14:31,406 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:14:31,407 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 178 [2019-05-23 11:14:31,407 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:31,408 INFO L146 ILogger]: With dead ends: 322 [2019-05-23 11:14:31,408 INFO L146 ILogger]: Without dead ends: 202 [2019-05-23 11:14:31,409 INFO L146 ILogger]: 0 DeclaredPredicates, 200 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:14:31,409 INFO L146 ILogger]: Start minimizeSevpa. Operand 202 states. [2019-05-23 11:14:31,413 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 202 to 194. [2019-05-23 11:14:31,413 INFO L146 ILogger]: Start removeUnreachable. Operand 194 states. [2019-05-23 11:14:31,414 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 194 states to 194 states and 201 transitions. [2019-05-23 11:14:31,414 INFO L146 ILogger]: Start accepts. Automaton has 194 states and 201 transitions. Word has length 178 [2019-05-23 11:14:31,415 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:31,415 INFO L146 ILogger]: Abstraction has 194 states and 201 transitions. [2019-05-23 11:14:31,415 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:14:31,415 INFO L146 ILogger]: Start isEmpty. Operand 194 states and 201 transitions. [2019-05-23 11:14:31,417 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 189 [2019-05-23 11:14:31,417 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:31,417 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:31,418 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:31,418 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:31,418 INFO L146 ILogger]: Analyzing trace with hash 764763599, now seen corresponding path program 8 times [2019-05-23 11:14:31,418 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:31,418 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:31,419 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:31,419 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:31,419 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:31,441 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:31,785 INFO L146 ILogger]: Checked inductivity of 225 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-05-23 11:14:31,785 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:31,785 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 11:14:31,794 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:31,852 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:31,852 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:31,853 INFO L146 ILogger]: Trace formula consists of 318 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:14:31,856 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:31,980 INFO L146 ILogger]: Checked inductivity of 225 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-05-23 11:14:31,999 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:31,999 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:14:32,000 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:14:32,000 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:14:32,000 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:14:32,000 INFO L146 ILogger]: Start difference. First operand 194 states and 201 transitions. Second operand 17 states. [2019-05-23 11:14:32,557 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:32,557 INFO L146 ILogger]: Finished difference Result 332 states and 346 transitions. [2019-05-23 11:14:32,559 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:14:32,560 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 188 [2019-05-23 11:14:32,560 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:32,561 INFO L146 ILogger]: With dead ends: 332 [2019-05-23 11:14:32,561 INFO L146 ILogger]: Without dead ends: 212 [2019-05-23 11:14:32,562 INFO L146 ILogger]: 0 DeclaredPredicates, 214 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:14:32,562 INFO L146 ILogger]: Start minimizeSevpa. Operand 212 states. [2019-05-23 11:14:32,566 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 212 to 204. [2019-05-23 11:14:32,566 INFO L146 ILogger]: Start removeUnreachable. Operand 204 states. [2019-05-23 11:14:32,567 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 204 states to 204 states and 211 transitions. [2019-05-23 11:14:32,567 INFO L146 ILogger]: Start accepts. Automaton has 204 states and 211 transitions. Word has length 188 [2019-05-23 11:14:32,567 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:32,567 INFO L146 ILogger]: Abstraction has 204 states and 211 transitions. [2019-05-23 11:14:32,568 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:14:32,568 INFO L146 ILogger]: Start isEmpty. Operand 204 states and 211 transitions. [2019-05-23 11:14:32,570 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 199 [2019-05-23 11:14:32,570 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:32,570 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:32,571 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:32,571 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:32,571 INFO L146 ILogger]: Analyzing trace with hash 1097314185, now seen corresponding path program 9 times [2019-05-23 11:14:32,571 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:32,571 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:32,572 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:32,572 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:32,572 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:32,594 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:32,882 INFO L146 ILogger]: Checked inductivity of 286 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-05-23 11:14:32,883 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:32,883 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 11:14:32,892 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:32,965 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:14:32,965 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:32,967 INFO L146 ILogger]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:32,970 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:33,248 INFO L146 ILogger]: Checked inductivity of 286 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2019-05-23 11:14:33,273 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:33,273 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 22 [2019-05-23 11:14:33,273 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:14:33,274 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:14:33,274 INFO L146 ILogger]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:14:33,274 INFO L146 ILogger]: Start difference. First operand 204 states and 211 transitions. Second operand 22 states. [2019-05-23 11:14:34,067 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:34,068 INFO L146 ILogger]: Finished difference Result 354 states and 369 transitions. [2019-05-23 11:14:34,068 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:14:34,068 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 198 [2019-05-23 11:14:34,069 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:34,070 INFO L146 ILogger]: With dead ends: 354 [2019-05-23 11:14:34,071 INFO L146 ILogger]: Without dead ends: 234 [2019-05-23 11:14:34,072 INFO L146 ILogger]: 0 DeclaredPredicates, 232 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:14:34,073 INFO L146 ILogger]: Start minimizeSevpa. Operand 234 states. [2019-05-23 11:14:34,077 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 234 to 221. [2019-05-23 11:14:34,077 INFO L146 ILogger]: Start removeUnreachable. Operand 221 states. [2019-05-23 11:14:34,078 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 221 states to 221 states and 228 transitions. [2019-05-23 11:14:34,079 INFO L146 ILogger]: Start accepts. Automaton has 221 states and 228 transitions. Word has length 198 [2019-05-23 11:14:34,079 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:34,079 INFO L146 ILogger]: Abstraction has 221 states and 228 transitions. [2019-05-23 11:14:34,079 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:14:34,079 INFO L146 ILogger]: Start isEmpty. Operand 221 states and 228 transitions. [2019-05-23 11:14:34,081 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 216 [2019-05-23 11:14:34,081 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:34,081 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:34,081 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:34,082 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:34,082 INFO L146 ILogger]: Analyzing trace with hash 576641815, now seen corresponding path program 10 times [2019-05-23 11:14:34,082 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:34,082 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:34,083 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:34,083 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:34,083 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:34,121 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:34,445 INFO L146 ILogger]: Checked inductivity of 372 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-05-23 11:14:34,446 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:34,446 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 11:14:34,454 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:36,254 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:36,255 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:36,258 INFO L146 ILogger]: Trace formula consists of 356 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:14:36,261 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:36,376 INFO L146 ILogger]: Checked inductivity of 372 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-05-23 11:14:36,397 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:36,397 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:14:36,398 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:14:36,398 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:14:36,398 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:14:36,399 INFO L146 ILogger]: Start difference. First operand 221 states and 228 transitions. Second operand 21 states. [2019-05-23 11:14:36,724 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:36,725 INFO L146 ILogger]: Finished difference Result 366 states and 380 transitions. [2019-05-23 11:14:36,725 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:14:36,726 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 215 [2019-05-23 11:14:36,726 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:36,727 INFO L146 ILogger]: With dead ends: 366 [2019-05-23 11:14:36,727 INFO L146 ILogger]: Without dead ends: 239 [2019-05-23 11:14:36,728 INFO L146 ILogger]: 0 DeclaredPredicates, 249 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:14:36,729 INFO L146 ILogger]: Start minimizeSevpa. Operand 239 states. [2019-05-23 11:14:36,733 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 239 to 231. [2019-05-23 11:14:36,733 INFO L146 ILogger]: Start removeUnreachable. Operand 231 states. [2019-05-23 11:14:36,734 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 231 states to 231 states and 238 transitions. [2019-05-23 11:14:36,734 INFO L146 ILogger]: Start accepts. Automaton has 231 states and 238 transitions. Word has length 215 [2019-05-23 11:14:36,734 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:36,734 INFO L146 ILogger]: Abstraction has 231 states and 238 transitions. [2019-05-23 11:14:36,734 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:14:36,735 INFO L146 ILogger]: Start isEmpty. Operand 231 states and 238 transitions. [2019-05-23 11:14:36,735 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 226 [2019-05-23 11:14:36,735 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:36,736 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:36,736 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:36,736 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:36,736 INFO L146 ILogger]: Analyzing trace with hash 1451312413, now seen corresponding path program 11 times [2019-05-23 11:14:36,736 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:36,737 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:36,737 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:36,738 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:36,738 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:36,760 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:37,016 INFO L146 ILogger]: Checked inductivity of 453 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-05-23 11:14:37,017 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:37,017 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 11:14:37,026 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:51,730 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-05-23 11:14:51,730 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:51,747 INFO L146 ILogger]: Trace formula consists of 370 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:14:51,750 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:51,867 INFO L146 ILogger]: Checked inductivity of 453 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2019-05-23 11:14:51,889 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:51,889 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2019-05-23 11:14:51,890 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:14:51,890 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:14:51,891 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:14:51,891 INFO L146 ILogger]: Start difference. First operand 231 states and 238 transitions. Second operand 28 states. [2019-05-23 11:14:53,718 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:53,718 INFO L146 ILogger]: Finished difference Result 388 states and 403 transitions. [2019-05-23 11:14:53,719 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:14:53,719 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 225 [2019-05-23 11:14:53,719 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:53,720 INFO L146 ILogger]: With dead ends: 388 [2019-05-23 11:14:53,721 INFO L146 ILogger]: Without dead ends: 261 [2019-05-23 11:14:53,722 INFO L146 ILogger]: 0 DeclaredPredicates, 269 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=575, Invalid=2077, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:14:53,722 INFO L146 ILogger]: Start minimizeSevpa. Operand 261 states. [2019-05-23 11:14:53,725 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 261 to 248. [2019-05-23 11:14:53,725 INFO L146 ILogger]: Start removeUnreachable. Operand 248 states. [2019-05-23 11:14:53,726 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 248 states to 248 states and 255 transitions. [2019-05-23 11:14:53,726 INFO L146 ILogger]: Start accepts. Automaton has 248 states and 255 transitions. Word has length 225 [2019-05-23 11:14:53,726 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:53,726 INFO L146 ILogger]: Abstraction has 248 states and 255 transitions. [2019-05-23 11:14:53,726 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:14:53,727 INFO L146 ILogger]: Start isEmpty. Operand 248 states and 255 transitions. [2019-05-23 11:14:53,727 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 243 [2019-05-23 11:14:53,727 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:53,728 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:53,728 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:53,728 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:53,728 INFO L146 ILogger]: Analyzing trace with hash 1353598078, now seen corresponding path program 12 times [2019-05-23 11:14:53,728 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:53,728 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:53,729 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:53,729 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:53,729 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:53,754 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:54,073 INFO L146 ILogger]: Checked inductivity of 566 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-05-23 11:14:54,073 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:54,073 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 11:14:54,081 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:54,291 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:14:54,291 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:54,292 INFO L146 ILogger]: Trace formula consists of 280 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:54,307 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:54,422 INFO L146 ILogger]: Checked inductivity of 566 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2019-05-23 11:14:54,441 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:54,441 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 7] total 28 [2019-05-23 11:14:54,442 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:14:54,442 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:14:54,443 INFO L146 ILogger]: CoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:14:54,443 INFO L146 ILogger]: Start difference. First operand 248 states and 255 transitions. Second operand 28 states. [2019-05-23 11:14:55,402 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:55,402 INFO L146 ILogger]: Finished difference Result 412 states and 427 transitions. [2019-05-23 11:14:55,403 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:14:55,403 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 242 [2019-05-23 11:14:55,403 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:55,405 INFO L146 ILogger]: With dead ends: 412 [2019-05-23 11:14:55,406 INFO L146 ILogger]: Without dead ends: 278 [2019-05-23 11:14:55,407 INFO L146 ILogger]: 0 DeclaredPredicates, 288 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=645, Invalid=2007, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:14:55,408 INFO L146 ILogger]: Start minimizeSevpa. Operand 278 states. [2019-05-23 11:14:55,412 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 278 to 265. [2019-05-23 11:14:55,413 INFO L146 ILogger]: Start removeUnreachable. Operand 265 states. [2019-05-23 11:14:55,414 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 265 states to 265 states and 272 transitions. [2019-05-23 11:14:55,414 INFO L146 ILogger]: Start accepts. Automaton has 265 states and 272 transitions. Word has length 242 [2019-05-23 11:14:55,414 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:55,414 INFO L146 ILogger]: Abstraction has 265 states and 272 transitions. [2019-05-23 11:14:55,414 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:14:55,415 INFO L146 ILogger]: Start isEmpty. Operand 265 states and 272 transitions. [2019-05-23 11:14:55,416 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 260 [2019-05-23 11:14:55,416 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:55,416 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:55,416 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:55,417 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:55,417 INFO L146 ILogger]: Analyzing trace with hash 1016408041, now seen corresponding path program 13 times [2019-05-23 11:14:55,417 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:55,417 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:55,418 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:55,418 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:55,418 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:55,443 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:56,072 INFO L146 ILogger]: Checked inductivity of 682 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-05-23 11:14:56,072 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:56,073 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 11:14:56,082 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:56,145 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:56,147 INFO L146 ILogger]: Trace formula consists of 418 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:14:56,151 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:56,347 INFO L146 ILogger]: Checked inductivity of 682 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-05-23 11:14:56,374 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:56,374 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:14:56,374 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:14:56,375 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:14:56,375 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:14:56,375 INFO L146 ILogger]: Start difference. First operand 265 states and 272 transitions. Second operand 27 states. [2019-05-23 11:14:57,151 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:57,151 INFO L146 ILogger]: Finished difference Result 424 states and 438 transitions. [2019-05-23 11:14:57,151 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:14:57,151 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 259 [2019-05-23 11:14:57,152 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:57,153 INFO L146 ILogger]: With dead ends: 424 [2019-05-23 11:14:57,153 INFO L146 ILogger]: Without dead ends: 283 [2019-05-23 11:14:57,154 INFO L146 ILogger]: 0 DeclaredPredicates, 305 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:14:57,155 INFO L146 ILogger]: Start minimizeSevpa. Operand 283 states. [2019-05-23 11:14:57,159 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 283 to 275. [2019-05-23 11:14:57,160 INFO L146 ILogger]: Start removeUnreachable. Operand 275 states. [2019-05-23 11:14:57,161 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 275 states to 275 states and 282 transitions. [2019-05-23 11:14:57,161 INFO L146 ILogger]: Start accepts. Automaton has 275 states and 282 transitions. Word has length 259 [2019-05-23 11:14:57,161 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:57,161 INFO L146 ILogger]: Abstraction has 275 states and 282 transitions. [2019-05-23 11:14:57,161 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:14:57,161 INFO L146 ILogger]: Start isEmpty. Operand 275 states and 282 transitions. [2019-05-23 11:14:57,164 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 270 [2019-05-23 11:14:57,164 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:57,164 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:57,164 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:57,165 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:57,165 INFO L146 ILogger]: Analyzing trace with hash 1980047599, now seen corresponding path program 14 times [2019-05-23 11:14:57,165 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:57,165 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:57,166 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:57,166 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:57,166 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:57,193 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:57,608 INFO L146 ILogger]: Checked inductivity of 793 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-05-23 11:14:57,608 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:57,609 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 11:14:57,616 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:57,683 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:57,683 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:57,685 INFO L146 ILogger]: Trace formula consists of 432 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:14:57,690 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:58,299 INFO L146 ILogger]: Checked inductivity of 793 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-05-23 11:14:58,344 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:58,344 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-05-23 11:14:58,345 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:14:58,346 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:14:58,346 INFO L146 ILogger]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:14:58,346 INFO L146 ILogger]: Start difference. First operand 275 states and 282 transitions. Second operand 29 states. [2019-05-23 11:14:59,663 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:59,663 INFO L146 ILogger]: Finished difference Result 434 states and 448 transitions. [2019-05-23 11:14:59,666 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:14:59,666 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 269 [2019-05-23 11:14:59,667 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:59,668 INFO L146 ILogger]: With dead ends: 434 [2019-05-23 11:14:59,668 INFO L146 ILogger]: Without dead ends: 293 [2019-05-23 11:14:59,670 INFO L146 ILogger]: 0 DeclaredPredicates, 319 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:14:59,670 INFO L146 ILogger]: Start minimizeSevpa. Operand 293 states. [2019-05-23 11:14:59,674 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 293 to 285. [2019-05-23 11:14:59,674 INFO L146 ILogger]: Start removeUnreachable. Operand 285 states. [2019-05-23 11:14:59,675 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 285 states to 285 states and 292 transitions. [2019-05-23 11:14:59,675 INFO L146 ILogger]: Start accepts. Automaton has 285 states and 292 transitions. Word has length 269 [2019-05-23 11:14:59,676 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:59,676 INFO L146 ILogger]: Abstraction has 285 states and 292 transitions. [2019-05-23 11:14:59,676 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:14:59,676 INFO L146 ILogger]: Start isEmpty. Operand 285 states and 292 transitions. [2019-05-23 11:14:59,677 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 280 [2019-05-23 11:14:59,678 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:59,678 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:59,678 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:59,678 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:59,679 INFO L146 ILogger]: Analyzing trace with hash -538047883, now seen corresponding path program 15 times [2019-05-23 11:14:59,679 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:59,679 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:59,679 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:59,680 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:59,680 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:59,715 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:00,131 INFO L146 ILogger]: Checked inductivity of 914 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-05-23 11:15:00,131 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:00,131 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 11:15:00,141 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:00,198 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:15:00,198 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:00,199 INFO L146 ILogger]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:15:00,202 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:00,351 INFO L146 ILogger]: Checked inductivity of 914 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 905 trivial. 0 not checked. [2019-05-23 11:15:00,371 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:00,372 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 7] total 34 [2019-05-23 11:15:00,372 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:15:00,373 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:15:00,373 INFO L146 ILogger]: CoverageRelationStatistics Valid=238, Invalid=884, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:15:00,373 INFO L146 ILogger]: Start difference. First operand 285 states and 292 transitions. Second operand 34 states. [2019-05-23 11:15:02,328 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:02,328 INFO L146 ILogger]: Finished difference Result 456 states and 471 transitions. [2019-05-23 11:15:02,329 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-05-23 11:15:02,329 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 279 [2019-05-23 11:15:02,330 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:02,331 INFO L146 ILogger]: With dead ends: 456 [2019-05-23 11:15:02,331 INFO L146 ILogger]: Without dead ends: 315 [2019-05-23 11:15:02,333 INFO L146 ILogger]: 0 DeclaredPredicates, 337 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1020, Invalid=3012, Unknown=0, NotChecked=0, Total=4032 [2019-05-23 11:15:02,334 INFO L146 ILogger]: Start minimizeSevpa. Operand 315 states. [2019-05-23 11:15:02,338 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 315 to 302. [2019-05-23 11:15:02,338 INFO L146 ILogger]: Start removeUnreachable. Operand 302 states. [2019-05-23 11:15:02,339 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 302 states to 302 states and 309 transitions. [2019-05-23 11:15:02,339 INFO L146 ILogger]: Start accepts. Automaton has 302 states and 309 transitions. Word has length 279 [2019-05-23 11:15:02,340 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:02,340 INFO L146 ILogger]: Abstraction has 302 states and 309 transitions. [2019-05-23 11:15:02,340 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:15:02,340 INFO L146 ILogger]: Start isEmpty. Operand 302 states and 309 transitions. [2019-05-23 11:15:02,341 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 297 [2019-05-23 11:15:02,342 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:02,342 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:02,342 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:02,342 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:02,343 INFO L146 ILogger]: Analyzing trace with hash 64717716, now seen corresponding path program 16 times [2019-05-23 11:15:02,343 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:02,343 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:02,344 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:02,344 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:02,344 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:02,370 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:03,824 INFO L146 ILogger]: Checked inductivity of 1060 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-05-23 11:15:03,824 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:03,824 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 11:15:03,834 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:15,945 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:15,945 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:15,956 INFO L146 ILogger]: Trace formula consists of 470 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:15:15,959 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:16,035 INFO L146 ILogger]: Checked inductivity of 1060 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-05-23 11:15:16,059 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:16,059 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:15:16,060 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:15:16,060 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:15:16,061 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:15:16,061 INFO L146 ILogger]: Start difference. First operand 302 states and 309 transitions. Second operand 33 states. [2019-05-23 11:15:16,728 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:16,728 INFO L146 ILogger]: Finished difference Result 468 states and 482 transitions. [2019-05-23 11:15:16,728 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:15:16,729 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 296 [2019-05-23 11:15:16,729 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:16,730 INFO L146 ILogger]: With dead ends: 468 [2019-05-23 11:15:16,730 INFO L146 ILogger]: Without dead ends: 320 [2019-05-23 11:15:16,732 INFO L146 ILogger]: 0 DeclaredPredicates, 354 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:15:16,732 INFO L146 ILogger]: Start minimizeSevpa. Operand 320 states. [2019-05-23 11:15:16,737 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 320 to 312. [2019-05-23 11:15:16,737 INFO L146 ILogger]: Start removeUnreachable. Operand 312 states. [2019-05-23 11:15:16,738 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 312 states to 312 states and 319 transitions. [2019-05-23 11:15:16,738 INFO L146 ILogger]: Start accepts. Automaton has 312 states and 319 transitions. Word has length 296 [2019-05-23 11:15:16,738 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:16,738 INFO L146 ILogger]: Abstraction has 312 states and 319 transitions. [2019-05-23 11:15:16,738 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:15:16,739 INFO L146 ILogger]: Start isEmpty. Operand 312 states and 319 transitions. [2019-05-23 11:15:16,740 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 307 [2019-05-23 11:15:16,740 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:16,741 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:16,741 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:16,741 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:16,741 INFO L146 ILogger]: Analyzing trace with hash -166537650, now seen corresponding path program 17 times [2019-05-23 11:15:16,741 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:16,742 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:16,742 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:16,742 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:16,742 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:16,768 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:17,200 INFO L146 ILogger]: Checked inductivity of 1201 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-05-23 11:15:17,201 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:17,201 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 11:15:17,210 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1