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-tiling/poly1_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:26:05,085 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:26:05,087 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:26:05,107 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:26:05,107 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:26:05,108 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:26:05,111 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:26:05,113 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:26:05,117 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:26:05,118 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:26:05,120 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:26:05,121 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:26:05,122 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:26:05,123 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:26:05,124 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:26:05,125 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:26:05,126 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:26:05,128 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:26:05,133 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:26:05,134 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:26:05,137 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:26:05,140 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:26:05,144 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:26:05,144 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:26:05,144 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:26:05,145 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:26:05,146 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:26:05,147 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:26:05,147 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:26:05,149 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:26:05,151 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:26:05,152 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:26:05,153 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:26:05,154 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:26:05,154 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:26:05,155 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:26:05,156 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:26:05,157 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:26:05,158 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:26:05,158 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:26:05,186 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:26:05,186 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:26:05,188 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:26:05,188 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:26:05,189 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:26:05,189 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:26:05,189 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:26:05,189 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:26:05,190 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:26:05,190 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:26:05,190 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:26:05,190 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:26:05,190 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:26:05,190 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:26:05,191 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:26:05,191 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:26:05,191 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:26:05,191 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:26:05,192 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:26:05,192 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:26:05,192 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:26:05,192 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:26:05,192 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:26:05,192 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:26:05,193 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:26:05,193 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:26:05,193 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:26:05,193 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:26:05,193 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 11:26:05,236 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:26:05,248 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:26:05,252 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:26:05,253 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:26:05,253 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:26:05,254 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/poly1_true-unreach-call.i [2019-05-23 11:26:05,309 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6718b17cd/990ba7c935414f1abb976b42236ee60e/FLAG48763a25e [2019-05-23 11:26:05,703 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:26:05,704 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/poly1_true-unreach-call.i [2019-05-23 11:26:05,710 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6718b17cd/990ba7c935414f1abb976b42236ee60e/FLAG48763a25e [2019-05-23 11:26:06,092 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6718b17cd/990ba7c935414f1abb976b42236ee60e [2019-05-23 11:26:06,102 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:26:06,103 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:26:06,104 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:06,104 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:26:06,107 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:26:06,108 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:06" (1/1) ... [2019-05-23 11:26:06,111 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@574bcf52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:06, skipping insertion in model container [2019-05-23 11:26:06,111 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:06" (1/1) ... [2019-05-23 11:26:06,119 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:26:06,137 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:26:06,368 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:06,376 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:26:06,403 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:06,430 INFO L146 ILogger]: Completed translation [2019-05-23 11:26:06,431 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:06 WrapperNode [2019-05-23 11:26:06,431 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:06,432 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:06,432 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:26:06,432 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:26:06,443 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:06" (1/1) ... [2019-05-23 11:26:06,452 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:06" (1/1) ... [2019-05-23 11:26:06,476 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:06,477 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:26:06,477 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:26:06,477 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:26:06,487 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:06" (1/1) ... [2019-05-23 11:26:06,487 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:06" (1/1) ... [2019-05-23 11:26:06,488 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:06" (1/1) ... [2019-05-23 11:26:06,489 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:06" (1/1) ... [2019-05-23 11:26:06,494 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:06" (1/1) ... [2019-05-23 11:26:06,501 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:06" (1/1) ... [2019-05-23 11:26:06,502 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:06" (1/1) ... [2019-05-23 11:26:06,504 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:26:06,504 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:26:06,504 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:26:06,505 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:26:06,506 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:06" (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 11:26:06,643 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:26:06,643 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:26:06,643 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:26:06,644 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:26:06,644 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:26:06,644 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:26:07,036 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:26:07,036 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:26:07,037 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:07 BoogieIcfgContainer [2019-05-23 11:26:07,037 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:26:07,038 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:26:07,038 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:26:07,041 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:26:07,041 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:26:06" (1/3) ... [2019-05-23 11:26:07,042 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4238b276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:07, skipping insertion in model container [2019-05-23 11:26:07,043 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:06" (2/3) ... [2019-05-23 11:26:07,043 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4238b276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:07, skipping insertion in model container [2019-05-23 11:26:07,043 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:07" (3/3) ... [2019-05-23 11:26:07,045 INFO L146 ILogger]: Analyzing ICFG poly1_true-unreach-call.i [2019-05-23 11:26:07,053 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:26:07,059 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:26:07,076 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:26:07,106 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:26:07,107 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:26:07,107 INFO L146 ILogger]: Hoare is true [2019-05-23 11:26:07,107 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:26:07,107 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:26:07,107 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:26:07,107 INFO L146 ILogger]: Difference is false [2019-05-23 11:26:07,108 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:26:07,108 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:26:07,122 INFO L146 ILogger]: Start isEmpty. Operand 36 states. [2019-05-23 11:26:07,129 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:26:07,129 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:07,130 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] [2019-05-23 11:26:07,132 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:07,137 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:07,137 INFO L146 ILogger]: Analyzing trace with hash -2092145736, now seen corresponding path program 1 times [2019-05-23 11:26:07,139 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:07,139 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:07,179 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:07,179 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:07,179 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:07,222 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:07,222 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:07,222 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:07,242 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:07,268 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:07,271 INFO L146 ILogger]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:26:07,276 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:07,342 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 11:26:07,364 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:07,365 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:26:07,367 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:26:07,379 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:26:07,380 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:07,383 INFO L146 ILogger]: Start difference. First operand 36 states. Second operand 4 states. [2019-05-23 11:26:07,581 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:07,582 INFO L146 ILogger]: Finished difference Result 74 states and 85 transitions. [2019-05-23 11:26:07,582 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:26:07,583 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 21 [2019-05-23 11:26:07,584 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:07,594 INFO L146 ILogger]: With dead ends: 74 [2019-05-23 11:26:07,595 INFO L146 ILogger]: Without dead ends: 45 [2019-05-23 11:26:07,597 INFO L146 ILogger]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:07,611 INFO L146 ILogger]: Start minimizeSevpa. Operand 45 states. [2019-05-23 11:26:07,625 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 45 to 31. [2019-05-23 11:26:07,627 INFO L146 ILogger]: Start removeUnreachable. Operand 31 states. [2019-05-23 11:26:07,628 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2019-05-23 11:26:07,629 INFO L146 ILogger]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 21 [2019-05-23 11:26:07,629 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:07,630 INFO L146 ILogger]: Abstraction has 31 states and 32 transitions. [2019-05-23 11:26:07,630 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:26:07,630 INFO L146 ILogger]: Start isEmpty. Operand 31 states and 32 transitions. [2019-05-23 11:26:07,631 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 27 [2019-05-23 11:26:07,631 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:07,631 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] [2019-05-23 11:26:07,632 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:07,632 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:07,632 INFO L146 ILogger]: Analyzing trace with hash 525272879, now seen corresponding path program 1 times [2019-05-23 11:26:07,632 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:07,633 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:07,633 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:07,634 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:07,634 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:07,643 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:07,644 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:07,644 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:07,662 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:07,683 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:07,684 INFO L146 ILogger]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:26:07,686 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:07,933 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 11:26:07,963 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:07,964 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-05-23 11:26:07,965 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:26:07,966 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:26:07,966 INFO L146 ILogger]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:26:07,967 INFO L146 ILogger]: Start difference. First operand 31 states and 32 transitions. Second operand 6 states. [2019-05-23 11:26:08,165 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:08,165 INFO L146 ILogger]: Finished difference Result 63 states and 65 transitions. [2019-05-23 11:26:08,166 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:26:08,166 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 26 [2019-05-23 11:26:08,166 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:08,167 INFO L146 ILogger]: With dead ends: 63 [2019-05-23 11:26:08,167 INFO L146 ILogger]: Without dead ends: 50 [2019-05-23 11:26:08,169 INFO L146 ILogger]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:26:08,169 INFO L146 ILogger]: Start minimizeSevpa. Operand 50 states. [2019-05-23 11:26:08,174 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 50 to 36. [2019-05-23 11:26:08,174 INFO L146 ILogger]: Start removeUnreachable. Operand 36 states. [2019-05-23 11:26:08,175 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2019-05-23 11:26:08,175 INFO L146 ILogger]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 26 [2019-05-23 11:26:08,176 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:08,176 INFO L146 ILogger]: Abstraction has 36 states and 37 transitions. [2019-05-23 11:26:08,176 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:26:08,176 INFO L146 ILogger]: Start isEmpty. Operand 36 states and 37 transitions. [2019-05-23 11:26:08,177 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 32 [2019-05-23 11:26:08,177 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:08,177 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:26:08,178 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:08,178 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:08,178 INFO L146 ILogger]: Analyzing trace with hash -1517619688, now seen corresponding path program 2 times [2019-05-23 11:26:08,178 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:08,179 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:08,180 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:08,180 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:08,180 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:08,188 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:08,188 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:08,188 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:08,207 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:08,235 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:08,236 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:08,237 INFO L146 ILogger]: Trace formula consists of 56 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:26:08,242 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:08,300 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:08,300 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:08,437 WARN L146 ILogger]: Spent 134.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2019-05-23 11:26:08,438 INFO L146 ILogger]: treesize reduction 5, result has 82.1 percent of original size [2019-05-23 11:26:08,451 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2019-05-23 11:26:08,452 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:08,529 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:08,530 INFO L146 ILogger]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:08,530 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:59, output treesize:19 [2019-05-23 11:26:08,749 INFO L146 ILogger]: treesize reduction 21, result has 25.0 percent of original size [2019-05-23 11:26:08,750 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2019-05-23 11:26:08,752 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:08,764 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:08,765 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:08,765 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2019-05-23 11:26:08,928 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:08,929 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:09,237 WARN L146 ILogger]: Spent 301.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2019-05-23 11:26:09,239 INFO L146 ILogger]: treesize reduction 10, result has 75.6 percent of original size [2019-05-23 11:26:09,240 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 48 [2019-05-23 11:26:09,241 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:09,375 WARN L146 ILogger]: Spent 131.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 6 [2019-05-23 11:26:09,375 INFO L146 ILogger]: treesize reduction 32, result has 17.9 percent of original size [2019-05-23 11:26:09,375 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:09,376 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 3 variables, input treesize:79, output treesize:7 [2019-05-23 11:26:09,461 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:09,487 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:09,487 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2019-05-23 11:26:09,488 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:26:09,488 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:26:09,488 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:26:09,489 INFO L146 ILogger]: Start difference. First operand 36 states and 37 transitions. Second operand 11 states. [2019-05-23 11:26:09,730 WARN L146 ILogger]: Spent 115.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2019-05-23 11:26:10,086 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:10,086 INFO L146 ILogger]: Finished difference Result 82 states and 84 transitions. [2019-05-23 11:26:10,091 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:26:10,091 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 31 [2019-05-23 11:26:10,092 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:10,093 INFO L146 ILogger]: With dead ends: 82 [2019-05-23 11:26:10,093 INFO L146 ILogger]: Without dead ends: 80 [2019-05-23 11:26:10,094 INFO L146 ILogger]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:26:10,094 INFO L146 ILogger]: Start minimizeSevpa. Operand 80 states. [2019-05-23 11:26:10,102 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 80 to 48. [2019-05-23 11:26:10,102 INFO L146 ILogger]: Start removeUnreachable. Operand 48 states. [2019-05-23 11:26:10,104 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2019-05-23 11:26:10,104 INFO L146 ILogger]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 31 [2019-05-23 11:26:10,104 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:10,104 INFO L146 ILogger]: Abstraction has 48 states and 50 transitions. [2019-05-23 11:26:10,104 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:26:10,105 INFO L146 ILogger]: Start isEmpty. Operand 48 states and 50 transitions. [2019-05-23 11:26:10,105 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 37 [2019-05-23 11:26:10,106 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:10,106 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:26:10,106 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:10,106 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:10,106 INFO L146 ILogger]: Analyzing trace with hash 2066542799, now seen corresponding path program 3 times [2019-05-23 11:26:10,106 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:10,107 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:10,107 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:10,107 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:10,108 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:10,115 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:10,115 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:10,115 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:10,127 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:26:10,163 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:26:10,164 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:10,165 WARN L146 ILogger]: Trace formula consists of 63 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:26:10,169 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:10,266 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:10,266 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:10,512 WARN L146 ILogger]: Spent 245.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2019-05-23 11:26:10,512 INFO L146 ILogger]: treesize reduction 5, result has 85.3 percent of original size [2019-05-23 11:26:10,519 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2019-05-23 11:26:10,520 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:10,569 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:10,569 INFO L146 ILogger]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:10,569 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:71, output treesize:25 [2019-05-23 11:26:10,700 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:10,721 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2019-05-23 11:26:10,722 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:10,730 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:10,730 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:10,754 INFO L146 ILogger]: treesize reduction 5, result has 86.5 percent of original size [2019-05-23 11:26:10,755 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:10,755 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:85, output treesize:32 [2019-05-23 11:26:10,918 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:10,918 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:10,987 INFO L146 ILogger]: treesize reduction 10, result has 89.2 percent of original size [2019-05-23 11:26:10,987 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 118 [2019-05-23 11:26:10,989 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,049 INFO L146 ILogger]: treesize reduction 71, result has 36.6 percent of original size [2019-05-23 11:26:11,049 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,050 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:103, output treesize:41 [2019-05-23 11:26:11,468 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:11,469 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:11,470 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:11,471 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:11,472 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:11,472 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:11,479 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:11,481 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 21 [2019-05-23 11:26:11,482 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,486 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:11,486 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,494 INFO L146 ILogger]: treesize reduction 5, result has 58.3 percent of original size [2019-05-23 11:26:11,494 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,494 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 3 variables, input treesize:97, output treesize:7 [2019-05-23 11:26:11,570 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:11,589 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:11,589 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2019-05-23 11:26:11,590 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:26:11,590 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:26:11,590 INFO L146 ILogger]: CoverageRelationStatistics Valid=71, Invalid=347, Unknown=2, NotChecked=0, Total=420 [2019-05-23 11:26:11,591 INFO L146 ILogger]: Start difference. First operand 48 states and 50 transitions. Second operand 21 states. [2019-05-23 11:26:12,499 WARN L146 ILogger]: Spent 103.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2019-05-23 11:26:12,888 WARN L146 ILogger]: Spent 107.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2019-05-23 11:26:13,075 WARN L146 ILogger]: Spent 124.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2019-05-23 11:26:13,260 WARN L146 ILogger]: Spent 123.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2019-05-23 11:26:13,561 WARN L146 ILogger]: Spent 128.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2019-05-23 11:26:13,928 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:13,928 INFO L146 ILogger]: Finished difference Result 108 states and 112 transitions. [2019-05-23 11:26:13,934 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:26:13,934 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 36 [2019-05-23 11:26:13,935 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:13,936 INFO L146 ILogger]: With dead ends: 108 [2019-05-23 11:26:13,936 INFO L146 ILogger]: Without dead ends: 106 [2019-05-23 11:26:13,939 INFO L146 ILogger]: 0 DeclaredPredicates, 56 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=275, Invalid=1445, Unknown=2, NotChecked=0, Total=1722 [2019-05-23 11:26:13,940 INFO L146 ILogger]: Start minimizeSevpa. Operand 106 states. [2019-05-23 11:26:13,946 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 106 to 58. [2019-05-23 11:26:13,946 INFO L146 ILogger]: Start removeUnreachable. Operand 58 states. [2019-05-23 11:26:13,947 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2019-05-23 11:26:13,947 INFO L146 ILogger]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 36 [2019-05-23 11:26:13,948 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:13,948 INFO L146 ILogger]: Abstraction has 58 states and 62 transitions. [2019-05-23 11:26:13,948 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:26:13,948 INFO L146 ILogger]: Start isEmpty. Operand 58 states and 62 transitions. [2019-05-23 11:26:13,949 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 11:26:13,949 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:13,949 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] [2019-05-23 11:26:13,950 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:13,950 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:13,950 INFO L146 ILogger]: Analyzing trace with hash -356718997, now seen corresponding path program 1 times [2019-05-23 11:26:13,950 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:13,950 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:13,951 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:13,951 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:13,952 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:13,961 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:13,962 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:13,964 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:13,974 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:13,991 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:13,992 INFO L146 ILogger]: Trace formula consists of 71 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:26:13,995 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:14,048 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:26:14,048 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:14,050 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:14,050 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:14,050 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2019-05-23 11:26:14,273 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:14,274 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:14,274 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2019-05-23 11:26:14,275 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:14,277 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:14,278 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:14,285 INFO L146 ILogger]: treesize reduction 5, result has 58.3 percent of original size [2019-05-23 11:26:14,285 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:14,286 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 3 variables, input treesize:65, output treesize:7 [2019-05-23 11:26:14,326 INFO L146 ILogger]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:14,344 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:14,345 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2019-05-23 11:26:14,345 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:26:14,345 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:26:14,346 INFO L146 ILogger]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:26:14,346 INFO L146 ILogger]: Start difference. First operand 58 states and 62 transitions. Second operand 14 states. [2019-05-23 11:26:15,174 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:15,175 INFO L146 ILogger]: Finished difference Result 108 states and 112 transitions. [2019-05-23 11:26:15,175 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:26:15,176 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 41 [2019-05-23 11:26:15,176 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:15,177 INFO L146 ILogger]: With dead ends: 108 [2019-05-23 11:26:15,177 INFO L146 ILogger]: Without dead ends: 106 [2019-05-23 11:26:15,178 INFO L146 ILogger]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:26:15,178 INFO L146 ILogger]: Start minimizeSevpa. Operand 106 states. [2019-05-23 11:26:15,186 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 106 to 69. [2019-05-23 11:26:15,186 INFO L146 ILogger]: Start removeUnreachable. Operand 69 states. [2019-05-23 11:26:15,187 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2019-05-23 11:26:15,187 INFO L146 ILogger]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 41 [2019-05-23 11:26:15,187 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:15,188 INFO L146 ILogger]: Abstraction has 69 states and 73 transitions. [2019-05-23 11:26:15,188 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:26:15,188 INFO L146 ILogger]: Start isEmpty. Operand 69 states and 73 transitions. [2019-05-23 11:26:15,189 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 47 [2019-05-23 11:26:15,189 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:15,189 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 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] [2019-05-23 11:26:15,189 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:15,190 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:15,190 INFO L146 ILogger]: Analyzing trace with hash -1322637214, now seen corresponding path program 2 times [2019-05-23 11:26:15,190 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:15,190 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:15,191 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:15,191 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:15,191 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:15,197 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:15,198 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:15,198 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:15,213 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:15,244 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:15,244 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:15,245 INFO L146 ILogger]: Trace formula consists of 78 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:26:15,247 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:15,293 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:15,293 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:15,307 INFO L146 ILogger]: treesize reduction 5, result has 82.1 percent of original size [2019-05-23 11:26:15,311 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2019-05-23 11:26:15,311 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:15,316 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:15,317 INFO L146 ILogger]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:15,317 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:59, output treesize:19 [2019-05-23 11:26:15,368 INFO L146 ILogger]: treesize reduction 27, result has 25.0 percent of original size [2019-05-23 11:26:15,368 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2019-05-23 11:26:15,369 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:15,378 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:15,379 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:15,379 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-05-23 11:26:15,607 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:15,609 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:15,609 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:15,613 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:15,614 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2019-05-23 11:26:15,615 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:15,641 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:15,642 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:15,775 WARN L146 ILogger]: Spent 133.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 6 [2019-05-23 11:26:15,775 INFO L146 ILogger]: treesize reduction 5, result has 58.3 percent of original size [2019-05-23 11:26:15,776 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:15,776 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 3 variables, input treesize:83, output treesize:7 [2019-05-23 11:26:15,867 INFO L146 ILogger]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:15,893 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:15,894 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2019-05-23 11:26:15,894 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:26:15,894 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:26:15,895 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:26:15,895 INFO L146 ILogger]: Start difference. First operand 69 states and 73 transitions. Second operand 17 states. [2019-05-23 11:26:16,814 WARN L146 ILogger]: Spent 204.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2019-05-23 11:26:17,121 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:17,122 INFO L146 ILogger]: Finished difference Result 125 states and 129 transitions. [2019-05-23 11:26:17,122 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:26:17,122 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 46 [2019-05-23 11:26:17,123 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:17,124 INFO L146 ILogger]: With dead ends: 125 [2019-05-23 11:26:17,124 INFO L146 ILogger]: Without dead ends: 123 [2019-05-23 11:26:17,125 INFO L146 ILogger]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=167, Invalid=889, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:26:17,127 INFO L146 ILogger]: Start minimizeSevpa. Operand 123 states. [2019-05-23 11:26:17,133 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 123 to 69. [2019-05-23 11:26:17,133 INFO L146 ILogger]: Start removeUnreachable. Operand 69 states. [2019-05-23 11:26:17,134 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2019-05-23 11:26:17,135 INFO L146 ILogger]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 46 [2019-05-23 11:26:17,135 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:17,135 INFO L146 ILogger]: Abstraction has 69 states and 73 transitions. [2019-05-23 11:26:17,135 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:26:17,135 INFO L146 ILogger]: Start isEmpty. Operand 69 states and 73 transitions. [2019-05-23 11:26:17,136 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 47 [2019-05-23 11:26:17,137 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:17,137 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:17,137 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:17,137 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:17,137 INFO L146 ILogger]: Analyzing trace with hash -1670688145, now seen corresponding path program 4 times [2019-05-23 11:26:17,138 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:17,138 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:17,139 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:17,139 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:17,139 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:17,146 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:17,146 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:17,146 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:17,165 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:26:17,251 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:26:17,252 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:17,253 INFO L146 ILogger]: Trace formula consists of 77 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:26:17,256 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:17,280 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2019-05-23 11:26:17,281 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:17,486 WARN L146 ILogger]: Spent 205.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 16 [2019-05-23 11:26:17,487 INFO L146 ILogger]: treesize reduction 36, result has 34.5 percent of original size [2019-05-23 11:26:17,487 INFO L146 ILogger]: Eliminatee v_prenex_4 vanished before elimination [2019-05-23 11:26:17,487 INFO L146 ILogger]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:17,488 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:19 [2019-05-23 11:26:17,620 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:17,624 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2019-05-23 11:26:17,625 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:17,628 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:17,628 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:17,643 INFO L146 ILogger]: treesize reduction 5, result has 83.9 percent of original size [2019-05-23 11:26:17,643 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:17,644 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:73, output treesize:26 [2019-05-23 11:26:17,710 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:17,710 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:17,785 INFO L146 ILogger]: treesize reduction 10, result has 89.2 percent of original size [2019-05-23 11:26:17,786 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 112 [2019-05-23 11:26:17,787 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:17,841 INFO L146 ILogger]: treesize reduction 71, result has 33.0 percent of original size [2019-05-23 11:26:17,841 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:17,841 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:91, output treesize:35 [2019-05-23 11:26:17,987 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:17,987 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:18,082 INFO L146 ILogger]: treesize reduction 32, result has 80.0 percent of original size [2019-05-23 11:26:18,083 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 160 [2019-05-23 11:26:18,085 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:18,128 INFO L146 ILogger]: treesize reduction 107, result has 29.1 percent of original size [2019-05-23 11:26:18,128 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:18,128 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:109, output treesize:44 [2019-05-23 11:26:18,294 INFO L146 ILogger]: treesize reduction 164, result has 17.6 percent of original size [2019-05-23 11:26:18,295 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 56 [2019-05-23 11:26:18,296 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:18,305 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:18,306 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:18,306 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:48, output treesize:44 [2019-05-23 11:26:18,503 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:18,504 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:18,504 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:18,505 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:18,506 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:18,508 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:18,509 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:18,512 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:18,513 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:18,513 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:18,514 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:18,514 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:18,515 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:18,531 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:18,535 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 27 [2019-05-23 11:26:18,536 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:18,560 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:18,560 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:18,683 WARN L146 ILogger]: Spent 122.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 6 [2019-05-23 11:26:18,683 INFO L146 ILogger]: treesize reduction 5, result has 58.3 percent of original size [2019-05-23 11:26:18,684 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:18,684 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 3 variables, input treesize:133, output treesize:7 [2019-05-23 11:26:18,811 INFO L146 ILogger]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:18,829 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:18,830 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2019-05-23 11:26:18,830 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:26:18,830 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:26:18,831 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=332, Unknown=3, NotChecked=0, Total=380 [2019-05-23 11:26:18,831 INFO L146 ILogger]: Start difference. First operand 69 states and 73 transitions. Second operand 20 states. [2019-05-23 11:26:20,863 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:20,864 INFO L146 ILogger]: Finished difference Result 130 states and 135 transitions. [2019-05-23 11:26:20,864 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:26:20,864 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 46 [2019-05-23 11:26:20,864 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:20,865 INFO L146 ILogger]: With dead ends: 130 [2019-05-23 11:26:20,865 INFO L146 ILogger]: Without dead ends: 128 [2019-05-23 11:26:20,867 INFO L146 ILogger]: 0 DeclaredPredicates, 65 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=180, Invalid=1377, Unknown=3, NotChecked=0, Total=1560 [2019-05-23 11:26:20,867 INFO L146 ILogger]: Start minimizeSevpa. Operand 128 states. [2019-05-23 11:26:20,873 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 128 to 74. [2019-05-23 11:26:20,873 INFO L146 ILogger]: Start removeUnreachable. Operand 74 states. [2019-05-23 11:26:20,874 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2019-05-23 11:26:20,874 INFO L146 ILogger]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 46 [2019-05-23 11:26:20,875 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:20,875 INFO L146 ILogger]: Abstraction has 74 states and 79 transitions. [2019-05-23 11:26:20,875 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:26:20,875 INFO L146 ILogger]: Start isEmpty. Operand 74 states and 79 transitions. [2019-05-23 11:26:20,876 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 52 [2019-05-23 11:26:20,876 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:20,876 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 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] [2019-05-23 11:26:20,877 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:20,877 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:20,877 INFO L146 ILogger]: Analyzing trace with hash -731329794, now seen corresponding path program 3 times [2019-05-23 11:26:20,877 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:20,877 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:20,878 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:20,878 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:20,879 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:20,884 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:20,884 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:20,884 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:20,903 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:26:20,932 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:26:20,932 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:20,933 INFO L146 ILogger]: Trace formula consists of 86 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:26:20,936 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:21,102 INFO L146 ILogger]: Checked inductivity of 29 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:21,121 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:21,121 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2019-05-23 11:26:21,122 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:26:21,122 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:26:21,122 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:26:21,122 INFO L146 ILogger]: Start difference. First operand 74 states and 79 transitions. Second operand 13 states. [2019-05-23 11:26:21,375 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:21,376 INFO L146 ILogger]: Finished difference Result 125 states and 130 transitions. [2019-05-23 11:26:21,376 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:26:21,376 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 51 [2019-05-23 11:26:21,376 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:21,377 INFO L146 ILogger]: With dead ends: 125 [2019-05-23 11:26:21,377 INFO L146 ILogger]: Without dead ends: 91 [2019-05-23 11:26:21,378 INFO L146 ILogger]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:26:21,378 INFO L146 ILogger]: Start minimizeSevpa. Operand 91 states. [2019-05-23 11:26:21,383 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 91 to 74. [2019-05-23 11:26:21,383 INFO L146 ILogger]: Start removeUnreachable. Operand 74 states. [2019-05-23 11:26:21,384 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2019-05-23 11:26:21,384 INFO L146 ILogger]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 51 [2019-05-23 11:26:21,385 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:21,385 INFO L146 ILogger]: Abstraction has 74 states and 78 transitions. [2019-05-23 11:26:21,385 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:26:21,385 INFO L146 ILogger]: Start isEmpty. Operand 74 states and 78 transitions. [2019-05-23 11:26:21,386 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 52 [2019-05-23 11:26:21,386 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:21,386 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 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] [2019-05-23 11:26:21,387 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:21,387 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:21,387 INFO L146 ILogger]: Analyzing trace with hash 2002421963, now seen corresponding path program 4 times [2019-05-23 11:26:21,387 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:21,387 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:21,388 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:21,388 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:21,389 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:21,394 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:21,395 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:21,395 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:21,412 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:26:21,463 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:26:21,463 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:21,464 INFO L146 ILogger]: Trace formula consists of 85 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:26:21,466 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:21,510 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2019-05-23 11:26:21,510 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,533 INFO L146 ILogger]: treesize reduction 36, result has 34.5 percent of original size [2019-05-23 11:26:21,534 INFO L146 ILogger]: Eliminatee v_prenex_5 vanished before elimination [2019-05-23 11:26:21,534 INFO L146 ILogger]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,534 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:19 [2019-05-23 11:26:21,588 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:21,588 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,614 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:21,614 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 72 [2019-05-23 11:26:21,615 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,639 INFO L146 ILogger]: treesize reduction 41, result has 40.6 percent of original size [2019-05-23 11:26:21,640 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,640 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:77, output treesize:28 [2019-05-23 11:26:21,734 INFO L146 ILogger]: treesize reduction 64, result has 22.9 percent of original size [2019-05-23 11:26:21,735 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2019-05-23 11:26:21,736 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,744 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:21,745 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,745 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2019-05-23 11:26:22,034 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:22,035 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:22,036 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:22,036 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:22,037 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:22,043 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:22,045 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 21 [2019-05-23 11:26:22,045 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:22,047 WARN L146 ILogger]: Array PQE input equivalent to false [2019-05-23 11:26:22,048 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:22,055 INFO L146 ILogger]: treesize reduction 5, result has 58.3 percent of original size [2019-05-23 11:26:22,056 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:22,056 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 3 variables, input treesize:101, output treesize:7 [2019-05-23 11:26:22,119 INFO L146 ILogger]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:22,137 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:22,137 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2019-05-23 11:26:22,138 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:26:22,138 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:26:22,138 INFO L146 ILogger]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:26:22,138 INFO L146 ILogger]: Start difference. First operand 74 states and 78 transitions. Second operand 20 states. [2019-05-23 11:26:23,211 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:23,212 INFO L146 ILogger]: Finished difference Result 130 states and 134 transitions. [2019-05-23 11:26:23,212 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:26:23,212 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 51 [2019-05-23 11:26:23,213 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:23,214 INFO L146 ILogger]: With dead ends: 130 [2019-05-23 11:26:23,214 INFO L146 ILogger]: Without dead ends: 128 [2019-05-23 11:26:23,215 INFO L146 ILogger]: 0 DeclaredPredicates, 68 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=183, Invalid=1223, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:26:23,215 INFO L146 ILogger]: Start minimizeSevpa. Operand 128 states. [2019-05-23 11:26:23,220 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 128 to 74. [2019-05-23 11:26:23,220 INFO L146 ILogger]: Start removeUnreachable. Operand 74 states. [2019-05-23 11:26:23,224 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2019-05-23 11:26:23,224 INFO L146 ILogger]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 51 [2019-05-23 11:26:23,224 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:23,224 INFO L146 ILogger]: Abstraction has 74 states and 78 transitions. [2019-05-23 11:26:23,225 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:26:23,225 INFO L146 ILogger]: Start isEmpty. Operand 74 states and 78 transitions. [2019-05-23 11:26:23,226 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 52 [2019-05-23 11:26:23,226 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:23,226 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:23,226 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:23,226 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:23,227 INFO L146 ILogger]: Analyzing trace with hash 1654371032, now seen corresponding path program 5 times [2019-05-23 11:26:23,227 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:23,227 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:23,228 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:23,228 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:23,228 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:23,233 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:26:23,233 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:26:23,233 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:26:23,248 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1