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_copy2_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:14:16,827 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:14:16,829 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:14:16,840 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:14:16,841 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:14:16,842 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:14:16,843 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:14:16,846 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:14:16,848 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:14:16,849 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:14:16,850 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:14:16,850 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:14:16,855 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:14:16,857 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:14:16,858 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:14:16,859 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:14:16,862 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:14:16,868 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:14:16,870 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:14:16,872 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:14:16,873 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:14:16,874 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:14:16,876 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:14:16,877 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:14:16,877 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:14:16,878 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:14:16,878 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:14:16,879 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:14:16,879 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:14:16,880 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:14:16,881 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:14:16,882 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:14:16,883 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:14:16,883 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:14:16,883 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:14:16,884 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:14:16,884 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:14:16,885 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:14:16,885 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:14:16,886 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:14:16,901 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:14:16,901 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:14:16,902 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:14:16,903 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:14:16,903 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:14:16,903 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:14:16,903 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:14:16,903 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:14:16,904 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:14:16,904 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:14:16,904 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:14:16,904 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:14:16,904 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:14:16,905 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:14:16,905 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:14:16,905 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:14:16,905 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:14:16,905 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:14:16,906 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:14:16,906 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:14:16,906 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:14:16,906 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:14:16,906 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:14:16,907 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:14:16,907 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:14:16,907 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:14:16,907 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:14:16,907 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:14:16,908 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 11:14:16,942 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:14:16,953 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:14:16,957 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:14:16,958 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:14:16,958 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:14:16,959 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copy2_false-unreach-call_ground.i [2019-05-23 11:14:17,007 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb543007/c4d6410fe3d242fc9a6237dbf01c696c/FLAG8048fbbc3 [2019-05-23 11:14:17,462 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:14:17,462 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copy2_false-unreach-call_ground.i [2019-05-23 11:14:17,469 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb543007/c4d6410fe3d242fc9a6237dbf01c696c/FLAG8048fbbc3 [2019-05-23 11:14:17,799 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb543007/c4d6410fe3d242fc9a6237dbf01c696c [2019-05-23 11:14:17,807 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:14:17,809 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:14:17,812 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:14:17,812 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:14:17,818 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:14:17,819 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,822 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c26efd 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 11:14:17,822 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,830 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:14:17,852 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:14:18,093 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:14:18,097 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:14:18,130 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:14:18,157 INFO L146 ILogger]: Completed translation [2019-05-23 11:14:18,157 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:18 WrapperNode [2019-05-23 11:14:18,158 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:14:18,159 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:14:18,159 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:14:18,159 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:14:18,169 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 11:14:18,181 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 11:14:18,214 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:14:18,214 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:14:18,215 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:14:18,215 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:14:18,227 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 11:14:18,227 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 11:14:18,230 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 11:14:18,230 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 11:14:18,240 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 11:14:18,321 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 11:14:18,324 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 11:14:18,331 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:14:18,332 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:14:18,332 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:14:18,332 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:14:18,333 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 11:14:18,387 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:14:18,387 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:14:18,387 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:14:18,387 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:14:18,388 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:14:18,388 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:14:18,882 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:14:18,882 INFO L146 ILogger]: Removed 10 assume(true) statements. [2019-05-23 11:14:18,883 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:14:18 BoogieIcfgContainer [2019-05-23 11:14:18,884 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:14:18,884 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:14:18,885 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:14:18,888 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:14:18,888 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:14:17" (1/3) ... [2019-05-23 11:14:18,889 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ea0769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:14:18, skipping insertion in model container [2019-05-23 11:14:18,889 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 11:14:18,890 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ea0769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:14:18, skipping insertion in model container [2019-05-23 11:14:18,890 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:14:18" (3/3) ... [2019-05-23 11:14:18,892 INFO L146 ILogger]: Analyzing ICFG standard_copy2_false-unreach-call_ground.i [2019-05-23 11:14:18,901 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:14:18,909 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:14:18,925 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:14:18,953 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:14:18,954 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:14:18,954 INFO L146 ILogger]: Hoare is true [2019-05-23 11:14:18,954 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:14:18,954 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:14:18,954 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:14:18,955 INFO L146 ILogger]: Difference is false [2019-05-23 11:14:18,955 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:14:18,955 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:14:18,971 INFO L146 ILogger]: Start isEmpty. Operand 62 states. [2019-05-23 11:14:18,979 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 26 [2019-05-23 11:14:18,979 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:18,980 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] [2019-05-23 11:14:18,982 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:18,986 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:18,986 INFO L146 ILogger]: Analyzing trace with hash -1259733842, now seen corresponding path program 1 times [2019-05-23 11:14:18,988 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:18,988 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:19,034 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,034 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,034 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,074 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,118 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 11:14:19,121 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:14:19,121 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:14:19,125 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:14:19,136 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:14:19,137 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:14:19,139 INFO L146 ILogger]: Start difference. First operand 62 states. Second operand 2 states. [2019-05-23 11:14:19,160 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:19,160 INFO L146 ILogger]: Finished difference Result 105 states and 119 transitions. [2019-05-23 11:14:19,160 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:14:19,161 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 25 [2019-05-23 11:14:19,162 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:19,170 INFO L146 ILogger]: With dead ends: 105 [2019-05-23 11:14:19,170 INFO L146 ILogger]: Without dead ends: 52 [2019-05-23 11:14:19,174 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 11:14:19,192 INFO L146 ILogger]: Start minimizeSevpa. Operand 52 states. [2019-05-23 11:14:19,209 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 52 to 52. [2019-05-23 11:14:19,210 INFO L146 ILogger]: Start removeUnreachable. Operand 52 states. [2019-05-23 11:14:19,212 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2019-05-23 11:14:19,213 INFO L146 ILogger]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 25 [2019-05-23 11:14:19,214 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:19,214 INFO L146 ILogger]: Abstraction has 52 states and 55 transitions. [2019-05-23 11:14:19,214 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:14:19,214 INFO L146 ILogger]: Start isEmpty. Operand 52 states and 55 transitions. [2019-05-23 11:14:19,215 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 26 [2019-05-23 11:14:19,215 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:19,216 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] [2019-05-23 11:14:19,216 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:19,216 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:19,216 INFO L146 ILogger]: Analyzing trace with hash -1183128410, now seen corresponding path program 1 times [2019-05-23 11:14:19,217 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:19,217 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:19,218 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,218 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,218 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,247 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,331 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 11:14:19,332 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:14:19,332 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:14:19,334 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:14:19,334 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:14:19,335 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:14:19,335 INFO L146 ILogger]: Start difference. First operand 52 states and 55 transitions. Second operand 3 states. [2019-05-23 11:14:19,413 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:19,413 INFO L146 ILogger]: Finished difference Result 94 states and 100 transitions. [2019-05-23 11:14:19,414 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:14:19,414 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 25 [2019-05-23 11:14:19,414 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:19,416 INFO L146 ILogger]: With dead ends: 94 [2019-05-23 11:14:19,416 INFO L146 ILogger]: Without dead ends: 61 [2019-05-23 11:14:19,417 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 11:14:19,418 INFO L146 ILogger]: Start minimizeSevpa. Operand 61 states. [2019-05-23 11:14:19,423 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 61 to 53. [2019-05-23 11:14:19,424 INFO L146 ILogger]: Start removeUnreachable. Operand 53 states. [2019-05-23 11:14:19,425 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2019-05-23 11:14:19,425 INFO L146 ILogger]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 25 [2019-05-23 11:14:19,426 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:19,426 INFO L146 ILogger]: Abstraction has 53 states and 56 transitions. [2019-05-23 11:14:19,426 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:14:19,426 INFO L146 ILogger]: Start isEmpty. Operand 53 states and 56 transitions. [2019-05-23 11:14:19,428 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 36 [2019-05-23 11:14:19,428 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:19,428 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] [2019-05-23 11:14:19,428 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:19,429 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:19,429 INFO L146 ILogger]: Analyzing trace with hash 1185167916, now seen corresponding path program 1 times [2019-05-23 11:14:19,429 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:19,429 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:19,431 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,431 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,431 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,451 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,567 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 11:14:19,569 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:19,569 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 11:14:19,585 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,624 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,626 INFO L146 ILogger]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:14:19,633 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:19,758 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 11:14:19,792 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:14:19,793 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:14:19,795 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:14:19,795 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:14:19,796 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:14:19,797 INFO L146 ILogger]: Start difference. First operand 53 states and 56 transitions. Second operand 6 states. [2019-05-23 11:14:20,236 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:20,236 INFO L146 ILogger]: Finished difference Result 116 states and 124 transitions. [2019-05-23 11:14:20,236 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:14:20,237 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 35 [2019-05-23 11:14:20,237 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:20,238 INFO L146 ILogger]: With dead ends: 116 [2019-05-23 11:14:20,238 INFO L146 ILogger]: Without dead ends: 83 [2019-05-23 11:14:20,239 INFO L146 ILogger]: 0 DeclaredPredicates, 41 GetRequests, 35 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 11:14:20,240 INFO L146 ILogger]: Start minimizeSevpa. Operand 83 states. [2019-05-23 11:14:20,246 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 83 to 65. [2019-05-23 11:14:20,246 INFO L146 ILogger]: Start removeUnreachable. Operand 65 states. [2019-05-23 11:14:20,247 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2019-05-23 11:14:20,247 INFO L146 ILogger]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 35 [2019-05-23 11:14:20,248 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:20,248 INFO L146 ILogger]: Abstraction has 65 states and 68 transitions. [2019-05-23 11:14:20,248 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:14:20,248 INFO L146 ILogger]: Start isEmpty. Operand 65 states and 68 transitions. [2019-05-23 11:14:20,250 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 60 [2019-05-23 11:14:20,250 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:20,250 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] [2019-05-23 11:14:20,250 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:20,251 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:20,251 INFO L146 ILogger]: Analyzing trace with hash -1291209127, now seen corresponding path program 1 times [2019-05-23 11:14:20,251 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:20,251 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:20,252 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,252 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:20,252 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,277 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:20,419 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-05-23 11:14:20,420 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:20,420 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 11:14:20,436 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:20,485 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:20,486 INFO L146 ILogger]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:20,491 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:20,599 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:14:20,628 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:20,629 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:14:20,629 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:14:20,629 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:14:20,630 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:14:20,630 INFO L146 ILogger]: Start difference. First operand 65 states and 68 transitions. Second operand 10 states. [2019-05-23 11:14:21,266 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:21,266 INFO L146 ILogger]: Finished difference Result 135 states and 142 transitions. [2019-05-23 11:14:21,267 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:14:21,267 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 59 [2019-05-23 11:14:21,268 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:21,269 INFO L146 ILogger]: With dead ends: 135 [2019-05-23 11:14:21,269 INFO L146 ILogger]: Without dead ends: 100 [2019-05-23 11:14:21,270 INFO L146 ILogger]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:14:21,270 INFO L146 ILogger]: Start minimizeSevpa. Operand 100 states. [2019-05-23 11:14:21,277 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 100 to 82. [2019-05-23 11:14:21,277 INFO L146 ILogger]: Start removeUnreachable. Operand 82 states. [2019-05-23 11:14:21,278 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2019-05-23 11:14:21,279 INFO L146 ILogger]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 59 [2019-05-23 11:14:21,279 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:21,279 INFO L146 ILogger]: Abstraction has 82 states and 85 transitions. [2019-05-23 11:14:21,279 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:14:21,279 INFO L146 ILogger]: Start isEmpty. Operand 82 states and 85 transitions. [2019-05-23 11:14:21,281 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 77 [2019-05-23 11:14:21,281 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:21,282 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] [2019-05-23 11:14:21,282 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:21,282 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:21,283 INFO L146 ILogger]: Analyzing trace with hash -1520551577, now seen corresponding path program 2 times [2019-05-23 11:14:21,283 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:21,283 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:21,284 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:21,284 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:21,284 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:21,307 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:21,389 INFO L146 ILogger]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-05-23 11:14:21,390 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:21,390 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 11:14:21,399 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:21,474 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:21,474 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:21,476 INFO L146 ILogger]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:14:21,479 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:21,639 INFO L146 ILogger]: Checked inductivity of 43 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-05-23 11:14:21,659 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:21,659 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2019-05-23 11:14:21,659 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:14:21,660 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:14:21,660 INFO L146 ILogger]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:14:21,660 INFO L146 ILogger]: Start difference. First operand 82 states and 85 transitions. Second operand 12 states. [2019-05-23 11:14:22,657 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:22,658 INFO L146 ILogger]: Finished difference Result 154 states and 161 transitions. [2019-05-23 11:14:22,658 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:14:22,658 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 76 [2019-05-23 11:14:22,658 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:22,660 INFO L146 ILogger]: With dead ends: 154 [2019-05-23 11:14:22,661 INFO L146 ILogger]: Without dead ends: 112 [2019-05-23 11:14:22,661 INFO L146 ILogger]: 0 DeclaredPredicates, 88 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:14:22,662 INFO L146 ILogger]: Start minimizeSevpa. Operand 112 states. [2019-05-23 11:14:22,669 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 112 to 99. [2019-05-23 11:14:22,670 INFO L146 ILogger]: Start removeUnreachable. Operand 99 states. [2019-05-23 11:14:22,671 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 99 states to 99 states and 102 transitions. [2019-05-23 11:14:22,671 INFO L146 ILogger]: Start accepts. Automaton has 99 states and 102 transitions. Word has length 76 [2019-05-23 11:14:22,671 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:22,672 INFO L146 ILogger]: Abstraction has 99 states and 102 transitions. [2019-05-23 11:14:22,673 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:14:22,673 INFO L146 ILogger]: Start isEmpty. Operand 99 states and 102 transitions. [2019-05-23 11:14:22,675 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 94 [2019-05-23 11:14:22,676 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:22,676 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] [2019-05-23 11:14:22,676 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:22,676 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:22,677 INFO L146 ILogger]: Analyzing trace with hash -1172271906, now seen corresponding path program 3 times [2019-05-23 11:14:22,677 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:22,677 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:22,678 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:22,679 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:22,679 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:22,707 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:22,898 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:14:22,898 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:22,898 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 11:14:22,908 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:22,970 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:14:22,971 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:22,972 INFO L146 ILogger]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:22,976 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:23,070 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-05-23 11:14:23,089 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:23,089 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-05-23 11:14:23,090 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:14:23,090 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:14:23,091 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:14:23,091 INFO L146 ILogger]: Start difference. First operand 99 states and 102 transitions. Second operand 16 states. [2019-05-23 11:14:23,468 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:23,469 INFO L146 ILogger]: Finished difference Result 178 states and 185 transitions. [2019-05-23 11:14:23,469 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:14:23,469 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 93 [2019-05-23 11:14:23,470 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:23,470 INFO L146 ILogger]: With dead ends: 178 [2019-05-23 11:14:23,471 INFO L146 ILogger]: Without dead ends: 129 [2019-05-23 11:14:23,472 INFO L146 ILogger]: 0 DeclaredPredicates, 115 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:14:23,472 INFO L146 ILogger]: Start minimizeSevpa. Operand 129 states. [2019-05-23 11:14:23,479 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 129 to 116. [2019-05-23 11:14:23,480 INFO L146 ILogger]: Start removeUnreachable. Operand 116 states. [2019-05-23 11:14:23,480 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions. [2019-05-23 11:14:23,481 INFO L146 ILogger]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 93 [2019-05-23 11:14:23,481 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:23,481 INFO L146 ILogger]: Abstraction has 116 states and 119 transitions. [2019-05-23 11:14:23,481 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:14:23,482 INFO L146 ILogger]: Start isEmpty. Operand 116 states and 119 transitions. [2019-05-23 11:14:23,483 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 111 [2019-05-23 11:14:23,483 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:23,484 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, 1, 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 11:14:23,484 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:23,484 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:23,484 INFO L146 ILogger]: Analyzing trace with hash 531742267, now seen corresponding path program 4 times [2019-05-23 11:14:23,484 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:23,485 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:23,485 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,485 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:23,486 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,510 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:23,683 INFO L146 ILogger]: Checked inductivity of 138 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:14:23,683 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:23,684 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 11:14:23,694 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:23,759 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:23,759 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:23,761 INFO L146 ILogger]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:14:23,770 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:24,167 INFO L146 ILogger]: Checked inductivity of 138 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:14:24,202 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:24,202 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:14:24,203 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:14:24,203 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:14:24,203 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:14:24,203 INFO L146 ILogger]: Start difference. First operand 116 states and 119 transitions. Second operand 15 states. [2019-05-23 11:14:24,445 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:24,445 INFO L146 ILogger]: Finished difference Result 190 states and 196 transitions. [2019-05-23 11:14:24,445 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:14:24,446 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 110 [2019-05-23 11:14:24,446 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:24,447 INFO L146 ILogger]: With dead ends: 190 [2019-05-23 11:14:24,447 INFO L146 ILogger]: Without dead ends: 134 [2019-05-23 11:14:24,448 INFO L146 ILogger]: 0 DeclaredPredicates, 132 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:14:24,449 INFO L146 ILogger]: Start minimizeSevpa. Operand 134 states. [2019-05-23 11:14:24,455 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 134 to 126. [2019-05-23 11:14:24,456 INFO L146 ILogger]: Start removeUnreachable. Operand 126 states. [2019-05-23 11:14:24,457 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2019-05-23 11:14:24,457 INFO L146 ILogger]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 110 [2019-05-23 11:14:24,457 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:24,457 INFO L146 ILogger]: Abstraction has 126 states and 129 transitions. [2019-05-23 11:14:24,458 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:14:24,458 INFO L146 ILogger]: Start isEmpty. Operand 126 states and 129 transitions. [2019-05-23 11:14:24,459 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:14:24,460 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:24,460 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, 1, 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 11:14:24,460 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:24,460 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:24,461 INFO L146 ILogger]: Analyzing trace with hash 1538287733, now seen corresponding path program 5 times [2019-05-23 11:14:24,461 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:24,461 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:24,462 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,462 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:24,462 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,495 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:24,821 INFO L146 ILogger]: Checked inductivity of 189 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:14:24,821 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:24,821 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 11:14:24,832 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:25,406 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:14:25,406 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:25,408 INFO L146 ILogger]: Trace formula consists of 194 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:14:25,413 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:25,466 INFO L146 ILogger]: Checked inductivity of 189 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:14:25,485 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:25,485 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:14:25,485 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:14:25,486 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:14:25,486 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:14:25,486 INFO L146 ILogger]: Start difference. First operand 126 states and 129 transitions. Second operand 17 states. [2019-05-23 11:14:25,855 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:25,856 INFO L146 ILogger]: Finished difference Result 200 states and 206 transitions. [2019-05-23 11:14:25,856 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:14:25,856 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 120 [2019-05-23 11:14:25,856 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:25,857 INFO L146 ILogger]: With dead ends: 200 [2019-05-23 11:14:25,857 INFO L146 ILogger]: Without dead ends: 144 [2019-05-23 11:14:25,858 INFO L146 ILogger]: 0 DeclaredPredicates, 146 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:14:25,859 INFO L146 ILogger]: Start minimizeSevpa. Operand 144 states. [2019-05-23 11:14:25,865 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 144 to 136. [2019-05-23 11:14:25,865 INFO L146 ILogger]: Start removeUnreachable. Operand 136 states. [2019-05-23 11:14:25,866 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 136 states to 136 states and 139 transitions. [2019-05-23 11:14:25,866 INFO L146 ILogger]: Start accepts. Automaton has 136 states and 139 transitions. Word has length 120 [2019-05-23 11:14:25,866 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:25,867 INFO L146 ILogger]: Abstraction has 136 states and 139 transitions. [2019-05-23 11:14:25,867 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:14:25,867 INFO L146 ILogger]: Start isEmpty. Operand 136 states and 139 transitions. [2019-05-23 11:14:25,869 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 131 [2019-05-23 11:14:25,869 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:25,869 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, 1, 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 11:14:25,869 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:25,869 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:25,870 INFO L146 ILogger]: Analyzing trace with hash -860679633, now seen corresponding path program 6 times [2019-05-23 11:14:25,870 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:25,870 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:25,871 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:25,871 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:25,871 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:25,892 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:26,215 INFO L146 ILogger]: Checked inductivity of 250 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:14:26,215 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:26,215 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 11:14:26,226 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:26,285 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:14:26,286 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:26,286 INFO L146 ILogger]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:26,289 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:26,405 INFO L146 ILogger]: Checked inductivity of 250 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2019-05-23 11:14:26,424 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:26,425 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 22 [2019-05-23 11:14:26,425 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:14:26,425 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:14:26,426 INFO L146 ILogger]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:14:26,427 INFO L146 ILogger]: Start difference. First operand 136 states and 139 transitions. Second operand 22 states. [2019-05-23 11:14:26,977 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:26,979 INFO L146 ILogger]: Finished difference Result 222 states and 229 transitions. [2019-05-23 11:14:26,982 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:14:26,982 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 130 [2019-05-23 11:14:26,982 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:26,983 INFO L146 ILogger]: With dead ends: 222 [2019-05-23 11:14:26,984 INFO L146 ILogger]: Without dead ends: 166 [2019-05-23 11:14:26,985 INFO L146 ILogger]: 0 DeclaredPredicates, 164 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:14:26,986 INFO L146 ILogger]: Start minimizeSevpa. Operand 166 states. [2019-05-23 11:14:27,000 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 166 to 153. [2019-05-23 11:14:27,001 INFO L146 ILogger]: Start removeUnreachable. Operand 153 states. [2019-05-23 11:14:27,001 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 153 states to 153 states and 156 transitions. [2019-05-23 11:14:27,002 INFO L146 ILogger]: Start accepts. Automaton has 153 states and 156 transitions. Word has length 130 [2019-05-23 11:14:27,003 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:27,003 INFO L146 ILogger]: Abstraction has 153 states and 156 transitions. [2019-05-23 11:14:27,003 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:14:27,003 INFO L146 ILogger]: Start isEmpty. Operand 153 states and 156 transitions. [2019-05-23 11:14:27,007 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 148 [2019-05-23 11:14:27,007 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:27,008 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, 1, 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 11:14:27,008 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:27,008 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:27,009 INFO L146 ILogger]: Analyzing trace with hash -1354944291, now seen corresponding path program 7 times [2019-05-23 11:14:27,009 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:27,009 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:27,010 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:27,010 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:27,010 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:27,034 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:27,449 INFO L146 ILogger]: Checked inductivity of 336 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:14:27,450 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:27,450 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 11:14:27,462 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:27,500 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:27,501 INFO L146 ILogger]: Trace formula consists of 232 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:14:27,503 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:27,547 INFO L146 ILogger]: Checked inductivity of 336 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:14:27,567 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:27,567 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:14:27,567 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:14:27,567 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:14:27,568 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:14:27,568 INFO L146 ILogger]: Start difference. First operand 153 states and 156 transitions. Second operand 21 states. [2019-05-23 11:14:27,955 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:27,955 INFO L146 ILogger]: Finished difference Result 234 states and 240 transitions. [2019-05-23 11:14:27,961 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:14:27,961 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 147 [2019-05-23 11:14:27,961 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:27,962 INFO L146 ILogger]: With dead ends: 234 [2019-05-23 11:14:27,962 INFO L146 ILogger]: Without dead ends: 171 [2019-05-23 11:14:27,964 INFO L146 ILogger]: 0 DeclaredPredicates, 181 GetRequests, 146 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 11:14:27,965 INFO L146 ILogger]: Start minimizeSevpa. Operand 171 states. [2019-05-23 11:14:27,974 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 171 to 163. [2019-05-23 11:14:27,974 INFO L146 ILogger]: Start removeUnreachable. Operand 163 states. [2019-05-23 11:14:27,975 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 163 states to 163 states and 166 transitions. [2019-05-23 11:14:27,975 INFO L146 ILogger]: Start accepts. Automaton has 163 states and 166 transitions. Word has length 147 [2019-05-23 11:14:27,975 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:27,976 INFO L146 ILogger]: Abstraction has 163 states and 166 transitions. [2019-05-23 11:14:27,976 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:14:27,976 INFO L146 ILogger]: Start isEmpty. Operand 163 states and 166 transitions. [2019-05-23 11:14:27,978 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 158 [2019-05-23 11:14:27,978 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:27,979 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, 1, 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 11:14:27,979 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:27,979 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:27,979 INFO L146 ILogger]: Analyzing trace with hash -1564982557, now seen corresponding path program 8 times [2019-05-23 11:14:27,979 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:27,979 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:27,981 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:27,981 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:27,981 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:28,013 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:28,359 INFO L146 ILogger]: Checked inductivity of 417 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:14:28,360 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:28,360 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 11:14:28,368 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:28,408 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:28,409 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:28,410 INFO L146 ILogger]: Trace formula consists of 246 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:14:28,411 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:28,459 INFO L146 ILogger]: Checked inductivity of 417 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:14:28,478 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:28,479 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:14:28,479 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:14:28,480 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:14:28,480 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:14:28,480 INFO L146 ILogger]: Start difference. First operand 163 states and 166 transitions. Second operand 23 states. [2019-05-23 11:14:28,939 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:28,940 INFO L146 ILogger]: Finished difference Result 244 states and 250 transitions. [2019-05-23 11:14:28,944 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:14:28,944 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 157 [2019-05-23 11:14:28,944 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:28,945 INFO L146 ILogger]: With dead ends: 244 [2019-05-23 11:14:28,946 INFO L146 ILogger]: Without dead ends: 181 [2019-05-23 11:14:28,950 INFO L146 ILogger]: 0 DeclaredPredicates, 195 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:14:28,950 INFO L146 ILogger]: Start minimizeSevpa. Operand 181 states. [2019-05-23 11:14:28,954 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 181 to 173. [2019-05-23 11:14:28,954 INFO L146 ILogger]: Start removeUnreachable. Operand 173 states. [2019-05-23 11:14:28,955 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 173 states to 173 states and 176 transitions. [2019-05-23 11:14:28,955 INFO L146 ILogger]: Start accepts. Automaton has 173 states and 176 transitions. Word has length 157 [2019-05-23 11:14:28,955 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:28,955 INFO L146 ILogger]: Abstraction has 173 states and 176 transitions. [2019-05-23 11:14:28,956 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:14:28,960 INFO L146 ILogger]: Start isEmpty. Operand 173 states and 176 transitions. [2019-05-23 11:14:28,961 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 168 [2019-05-23 11:14:28,961 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:28,962 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:28,962 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:28,962 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:28,962 INFO L146 ILogger]: Analyzing trace with hash 1247872361, now seen corresponding path program 9 times [2019-05-23 11:14:28,962 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:28,962 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:28,963 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:28,963 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:28,963 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:28,990 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:29,840 INFO L146 ILogger]: Checked inductivity of 508 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:14:29,840 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:29,841 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 11:14:29,850 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:29,902 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:14:29,902 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:29,903 INFO L146 ILogger]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:14:29,905 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:30,073 INFO L146 ILogger]: Checked inductivity of 508 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2019-05-23 11:14:30,092 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:30,092 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9] total 30 [2019-05-23 11:14:30,093 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:14:30,093 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:14:30,093 INFO L146 ILogger]: CoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:14:30,093 INFO L146 ILogger]: Start difference. First operand 173 states and 176 transitions. Second operand 30 states. [2019-05-23 11:14:31,025 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:31,025 INFO L146 ILogger]: Finished difference Result 266 states and 273 transitions. [2019-05-23 11:14:31,026 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:14:31,026 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 167 [2019-05-23 11:14:31,026 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:31,027 INFO L146 ILogger]: With dead ends: 266 [2019-05-23 11:14:31,028 INFO L146 ILogger]: Without dead ends: 203 [2019-05-23 11:14:31,029 INFO L146 ILogger]: 0 DeclaredPredicates, 215 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=680, Invalid=2400, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:14:31,029 INFO L146 ILogger]: Start minimizeSevpa. Operand 203 states. [2019-05-23 11:14:31,032 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 203 to 190. [2019-05-23 11:14:31,033 INFO L146 ILogger]: Start removeUnreachable. Operand 190 states. [2019-05-23 11:14:31,033 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 190 states to 190 states and 193 transitions. [2019-05-23 11:14:31,034 INFO L146 ILogger]: Start accepts. Automaton has 190 states and 193 transitions. Word has length 167 [2019-05-23 11:14:31,034 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:31,034 INFO L146 ILogger]: Abstraction has 190 states and 193 transitions. [2019-05-23 11:14:31,034 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:14:31,034 INFO L146 ILogger]: Start isEmpty. Operand 190 states and 193 transitions. [2019-05-23 11:14:31,036 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:14:31,036 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:31,036 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, 1, 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 11:14:31,036 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:31,037 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:31,037 INFO L146 ILogger]: Analyzing trace with hash -379309360, now seen corresponding path program 10 times [2019-05-23 11:14:31,037 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:31,037 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:31,038 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:31,038 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:31,038 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:31,057 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:31,928 INFO L146 ILogger]: Checked inductivity of 631 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:14:31,929 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:31,929 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 11:14:31,941 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:32,280 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:32,281 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:32,282 INFO L146 ILogger]: Trace formula consists of 284 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:14:32,285 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:32,384 INFO L146 ILogger]: Checked inductivity of 631 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:14:32,408 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:32,408 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:14:32,408 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:14:32,408 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:14:32,409 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:14:32,409 INFO L146 ILogger]: Start difference. First operand 190 states and 193 transitions. Second operand 27 states. [2019-05-23 11:14:33,035 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:33,035 INFO L146 ILogger]: Finished difference Result 278 states and 284 transitions. [2019-05-23 11:14:33,035 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:14:33,036 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 184 [2019-05-23 11:14:33,036 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:33,037 INFO L146 ILogger]: With dead ends: 278 [2019-05-23 11:14:33,037 INFO L146 ILogger]: Without dead ends: 208 [2019-05-23 11:14:33,038 INFO L146 ILogger]: 0 DeclaredPredicates, 230 GetRequests, 183 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 11:14:33,039 INFO L146 ILogger]: Start minimizeSevpa. Operand 208 states. [2019-05-23 11:14:33,042 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 208 to 200. [2019-05-23 11:14:33,043 INFO L146 ILogger]: Start removeUnreachable. Operand 200 states. [2019-05-23 11:14:33,043 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 200 states to 200 states and 203 transitions. [2019-05-23 11:14:33,044 INFO L146 ILogger]: Start accepts. Automaton has 200 states and 203 transitions. Word has length 184 [2019-05-23 11:14:33,044 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:33,044 INFO L146 ILogger]: Abstraction has 200 states and 203 transitions. [2019-05-23 11:14:33,044 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:14:33,044 INFO L146 ILogger]: Start isEmpty. Operand 200 states and 203 transitions. [2019-05-23 11:14:33,046 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 195 [2019-05-23 11:14:33,046 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:33,046 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, 1, 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 11:14:33,047 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:33,047 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:33,047 INFO L146 ILogger]: Analyzing trace with hash 767298698, now seen corresponding path program 11 times [2019-05-23 11:14:33,047 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:33,047 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:33,048 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:33,048 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:33,048 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:33,068 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:33,764 INFO L146 ILogger]: Checked inductivity of 742 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:14:33,764 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:33,764 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 11:14:33,773 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:52,145 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-05-23 11:14:52,145 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:52,159 INFO L146 ILogger]: Trace formula consists of 298 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:14:52,161 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:52,231 INFO L146 ILogger]: Checked inductivity of 742 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:14:52,254 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:52,255 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-05-23 11:14:52,255 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:14:52,255 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:14:52,256 INFO L146 ILogger]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:14:52,256 INFO L146 ILogger]: Start difference. First operand 200 states and 203 transitions. Second operand 29 states. [2019-05-23 11:14:53,454 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:53,455 INFO L146 ILogger]: Finished difference Result 288 states and 294 transitions. [2019-05-23 11:14:53,455 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:14:53,455 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 194 [2019-05-23 11:14:53,455 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:53,457 INFO L146 ILogger]: With dead ends: 288 [2019-05-23 11:14:53,457 INFO L146 ILogger]: Without dead ends: 218 [2019-05-23 11:14:53,459 INFO L146 ILogger]: 0 DeclaredPredicates, 244 GetRequests, 193 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 11:14:53,459 INFO L146 ILogger]: Start minimizeSevpa. Operand 218 states. [2019-05-23 11:14:53,463 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 218 to 210. [2019-05-23 11:14:53,463 INFO L146 ILogger]: Start removeUnreachable. Operand 210 states. [2019-05-23 11:14:53,464 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 210 states to 210 states and 213 transitions. [2019-05-23 11:14:53,464 INFO L146 ILogger]: Start accepts. Automaton has 210 states and 213 transitions. Word has length 194 [2019-05-23 11:14:53,464 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:53,464 INFO L146 ILogger]: Abstraction has 210 states and 213 transitions. [2019-05-23 11:14:53,464 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:14:53,465 INFO L146 ILogger]: Start isEmpty. Operand 210 states and 213 transitions. [2019-05-23 11:14:53,465 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 205 [2019-05-23 11:14:53,466 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:53,466 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, 1, 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 11:14:53,466 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:53,466 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:53,467 INFO L146 ILogger]: Analyzing trace with hash 990021060, now seen corresponding path program 12 times [2019-05-23 11:14:53,467 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:53,467 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:53,468 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:53,468 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:53,468 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:53,486 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:53,940 INFO L146 ILogger]: Checked inductivity of 863 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:14:53,940 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:53,941 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 11:14:53,949 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:54,236 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:14:54,237 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:54,239 INFO L146 ILogger]: Trace formula consists of 204 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:14:54,242 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:54,459 INFO L146 ILogger]: Checked inductivity of 863 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 839 trivial. 0 not checked. [2019-05-23 11:14:54,478 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:54,479 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 9] total 36 [2019-05-23 11:14:54,479 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:14:54,480 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:14:54,480 INFO L146 ILogger]: CoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:14:54,480 INFO L146 ILogger]: Start difference. First operand 210 states and 213 transitions. Second operand 36 states. [2019-05-23 11:14:55,923 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:55,923 INFO L146 ILogger]: Finished difference Result 310 states and 317 transitions. [2019-05-23 11:14:55,923 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:14:55,923 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 204 [2019-05-23 11:14:55,924 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:55,925 INFO L146 ILogger]: With dead ends: 310 [2019-05-23 11:14:55,925 INFO L146 ILogger]: Without dead ends: 240 [2019-05-23 11:14:55,927 INFO L146 ILogger]: 0 DeclaredPredicates, 264 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1055, Invalid=3501, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:14:55,928 INFO L146 ILogger]: Start minimizeSevpa. Operand 240 states. [2019-05-23 11:14:55,931 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 240 to 227. [2019-05-23 11:14:55,931 INFO L146 ILogger]: Start removeUnreachable. Operand 227 states. [2019-05-23 11:14:55,932 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 227 states to 227 states and 230 transitions. [2019-05-23 11:14:55,932 INFO L146 ILogger]: Start accepts. Automaton has 227 states and 230 transitions. Word has length 204 [2019-05-23 11:14:55,932 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:55,932 INFO L146 ILogger]: Abstraction has 227 states and 230 transitions. [2019-05-23 11:14:55,933 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:14:55,933 INFO L146 ILogger]: Start isEmpty. Operand 227 states and 230 transitions. [2019-05-23 11:14:55,934 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 222 [2019-05-23 11:14:55,934 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:55,934 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:55,934 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:55,935 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:55,935 INFO L146 ILogger]: Analyzing trace with hash -512986694, now seen corresponding path program 13 times [2019-05-23 11:14:55,935 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:55,935 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:55,936 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:55,936 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:55,936 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:55,955 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:56,426 INFO L146 ILogger]: Checked inductivity of 1016 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:14:56,426 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:56,427 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 11:14:56,435 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:56,483 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:56,484 INFO L146 ILogger]: Trace formula consists of 336 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:14:56,487 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:56,564 INFO L146 ILogger]: Checked inductivity of 1016 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:14:56,582 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:56,582 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:14:56,583 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:14:56,583 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:14:56,584 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:14:56,584 INFO L146 ILogger]: Start difference. First operand 227 states and 230 transitions. Second operand 33 states. [2019-05-23 11:14:57,208 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:57,209 INFO L146 ILogger]: Finished difference Result 322 states and 328 transitions. [2019-05-23 11:14:57,210 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:14:57,210 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 221 [2019-05-23 11:14:57,210 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:57,211 INFO L146 ILogger]: With dead ends: 322 [2019-05-23 11:14:57,211 INFO L146 ILogger]: Without dead ends: 245 [2019-05-23 11:14:57,212 INFO L146 ILogger]: 0 DeclaredPredicates, 279 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:14:57,213 INFO L146 ILogger]: Start minimizeSevpa. Operand 245 states. [2019-05-23 11:14:57,215 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 245 to 237. [2019-05-23 11:14:57,215 INFO L146 ILogger]: Start removeUnreachable. Operand 237 states. [2019-05-23 11:14:57,216 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 237 states to 237 states and 240 transitions. [2019-05-23 11:14:57,216 INFO L146 ILogger]: Start accepts. Automaton has 237 states and 240 transitions. Word has length 221 [2019-05-23 11:14:57,217 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:57,217 INFO L146 ILogger]: Abstraction has 237 states and 240 transitions. [2019-05-23 11:14:57,217 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:14:57,217 INFO L146 ILogger]: Start isEmpty. Operand 237 states and 240 transitions. [2019-05-23 11:14:57,218 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 232 [2019-05-23 11:14:57,218 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:57,218 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:57,219 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:57,219 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:57,219 INFO L146 ILogger]: Analyzing trace with hash 339608640, now seen corresponding path program 14 times [2019-05-23 11:14:57,219 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:57,219 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:57,220 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:57,220 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:57,220 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:57,239 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:57,685 INFO L146 ILogger]: Checked inductivity of 1157 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:14:57,686 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:57,686 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 11:14:57,694 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:57,750 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:57,750 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:57,751 INFO L146 ILogger]: Trace formula consists of 350 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:14:57,753 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:57,896 INFO L146 ILogger]: Checked inductivity of 1157 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:14:57,915 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:57,915 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:14:57,915 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:14:57,916 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:14:57,916 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:14:57,916 INFO L146 ILogger]: Start difference. First operand 237 states and 240 transitions. Second operand 35 states. [2019-05-23 11:14:58,809 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:58,809 INFO L146 ILogger]: Finished difference Result 332 states and 338 transitions. [2019-05-23 11:14:58,810 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:14:58,810 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 231 [2019-05-23 11:14:58,810 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:58,811 INFO L146 ILogger]: With dead ends: 332 [2019-05-23 11:14:58,811 INFO L146 ILogger]: Without dead ends: 255 [2019-05-23 11:14:58,815 INFO L146 ILogger]: 0 DeclaredPredicates, 293 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:14:58,815 INFO L146 ILogger]: Start minimizeSevpa. Operand 255 states. [2019-05-23 11:14:58,819 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 255 to 247. [2019-05-23 11:14:58,819 INFO L146 ILogger]: Start removeUnreachable. Operand 247 states. [2019-05-23 11:14:58,820 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 247 states to 247 states and 250 transitions. [2019-05-23 11:14:58,820 INFO L146 ILogger]: Start accepts. Automaton has 247 states and 250 transitions. Word has length 231 [2019-05-23 11:14:58,820 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:58,820 INFO L146 ILogger]: Abstraction has 247 states and 250 transitions. [2019-05-23 11:14:58,820 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:14:58,820 INFO L146 ILogger]: Start isEmpty. Operand 247 states and 250 transitions. [2019-05-23 11:14:58,821 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 242 [2019-05-23 11:14:58,822 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:58,822 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:58,822 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:58,822 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:58,823 INFO L146 ILogger]: Analyzing trace with hash 326543174, now seen corresponding path program 15 times [2019-05-23 11:14:58,823 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:58,823 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:58,824 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:58,824 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:58,824 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:58,851 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:59,470 INFO L146 ILogger]: Checked inductivity of 1308 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:14:59,470 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:59,470 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 11:14:59,479 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:59,645 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:14:59,645 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:59,647 INFO L146 ILogger]: Trace formula consists of 196 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:14:59,649 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:59,836 INFO L146 ILogger]: Checked inductivity of 1308 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1262 trivial. 0 not checked. [2019-05-23 11:14:59,855 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:59,855 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 11] total 44 [2019-05-23 11:14:59,855 INFO L146 ILogger]: Interpolant automaton has 44 states [2019-05-23 11:14:59,856 INFO L146 ILogger]: Constructing interpolant automaton starting with 44 interpolants. [2019-05-23 11:14:59,856 INFO L146 ILogger]: CoverageRelationStatistics Valid=357, Invalid=1535, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:14:59,856 INFO L146 ILogger]: Start difference. First operand 247 states and 250 transitions. Second operand 44 states. [2019-05-23 11:15:01,028 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:01,029 INFO L146 ILogger]: Finished difference Result 354 states and 361 transitions. [2019-05-23 11:15:01,036 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2019-05-23 11:15:01,036 INFO L146 ILogger]: Start accepts. Automaton has 44 states. Word has length 241 [2019-05-23 11:15:01,037 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:01,038 INFO L146 ILogger]: With dead ends: 354 [2019-05-23 11:15:01,038 INFO L146 ILogger]: Without dead ends: 277 [2019-05-23 11:15:01,040 INFO L146 ILogger]: 0 DeclaredPredicates, 315 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1311 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1565, Invalid=5407, Unknown=0, NotChecked=0, Total=6972 [2019-05-23 11:15:01,041 INFO L146 ILogger]: Start minimizeSevpa. Operand 277 states. [2019-05-23 11:15:01,045 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 277 to 264. [2019-05-23 11:15:01,045 INFO L146 ILogger]: Start removeUnreachable. Operand 264 states. [2019-05-23 11:15:01,046 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 264 states to 264 states and 267 transitions. [2019-05-23 11:15:01,046 INFO L146 ILogger]: Start accepts. Automaton has 264 states and 267 transitions. Word has length 241 [2019-05-23 11:15:01,046 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:01,047 INFO L146 ILogger]: Abstraction has 264 states and 267 transitions. [2019-05-23 11:15:01,047 INFO L146 ILogger]: Interpolant automaton has 44 states. [2019-05-23 11:15:01,047 INFO L146 ILogger]: Start isEmpty. Operand 264 states and 267 transitions. [2019-05-23 11:15:01,048 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 259 [2019-05-23 11:15:01,048 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:01,049 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:01,049 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:01,049 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:01,049 INFO L146 ILogger]: Analyzing trace with hash -1066902061, now seen corresponding path program 16 times [2019-05-23 11:15:01,049 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:01,050 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:01,050 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:01,050 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:01,051 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:01,073 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:02,126 INFO L146 ILogger]: Checked inductivity of 1498 backedges. 0 proven. 1377 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-05-23 11:15:02,126 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:02,127 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 11:15:02,135 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:05,362 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:05,362 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:05,366 INFO L146 ILogger]: Trace formula consists of 388 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:15:05,370 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:06,146 INFO L146 ILogger]: Checked inductivity of 1498 backedges. 0 proven. 1377 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-05-23 11:15:06,184 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:06,184 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:15:06,185 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:15:06,185 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:15:06,186 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:15:06,186 INFO L146 ILogger]: Start difference. First operand 264 states and 267 transitions. Second operand 39 states. [2019-05-23 11:15:07,250 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:07,251 INFO L146 ILogger]: Finished difference Result 366 states and 372 transitions. [2019-05-23 11:15:07,254 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:15:07,254 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 258 [2019-05-23 11:15:07,255 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:07,256 INFO L146 ILogger]: With dead ends: 366 [2019-05-23 11:15:07,256 INFO L146 ILogger]: Without dead ends: 282 [2019-05-23 11:15:07,258 INFO L146 ILogger]: 0 DeclaredPredicates, 328 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:15:07,259 INFO L146 ILogger]: Start minimizeSevpa. Operand 282 states. [2019-05-23 11:15:07,263 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 282 to 274. [2019-05-23 11:15:07,263 INFO L146 ILogger]: Start removeUnreachable. Operand 274 states. [2019-05-23 11:15:07,264 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 274 states to 274 states and 277 transitions. [2019-05-23 11:15:07,264 INFO L146 ILogger]: Start accepts. Automaton has 274 states and 277 transitions. Word has length 258 [2019-05-23 11:15:07,265 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:07,265 INFO L146 ILogger]: Abstraction has 274 states and 277 transitions. [2019-05-23 11:15:07,265 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:15:07,265 INFO L146 ILogger]: Start isEmpty. Operand 274 states and 277 transitions. [2019-05-23 11:15:07,266 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 269 [2019-05-23 11:15:07,266 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:07,267 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:07,267 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:07,267 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:07,267 INFO L146 ILogger]: Analyzing trace with hash -1161296115, now seen corresponding path program 17 times [2019-05-23 11:15:07,268 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:07,268 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:07,269 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:07,269 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:07,269 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:07,292 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:09,263 INFO L146 ILogger]: Checked inductivity of 1669 backedges. 0 proven. 1548 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-05-23 11:15:09,264 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:09,264 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 11:15:09,275 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1