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_copy1_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:14:16,236 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:14:16,239 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:14:16,258 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:14:16,258 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:14:16,260 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:14:16,262 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:14:16,265 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:14:16,268 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:14:16,269 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:14:16,276 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:14:16,277 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:14:16,277 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:14:16,280 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:14:16,281 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:14:16,284 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:14:16,285 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:14:16,289 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:14:16,293 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:14:16,296 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:14:16,298 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:14:16,300 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:14:16,304 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:14:16,304 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:14:16,304 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:14:16,306 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:14:16,307 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:14:16,309 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:14:16,309 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:14:16,310 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:14:16,313 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:14:16,314 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:14:16,315 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:14:16,315 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:14:16,317 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:14:16,317 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:14:16,318 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:14:16,318 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:14:16,320 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:14:16,323 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:14:16,357 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:14:16,357 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:14:16,360 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:14:16,360 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:14:16,360 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:14:16,361 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:14:16,361 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:14:16,363 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:14:16,364 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:14:16,364 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:14:16,364 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:14:16,364 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:14:16,365 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:14:16,365 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:14:16,365 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:14:16,365 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:14:16,365 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:14:16,366 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:14:16,366 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:14:16,366 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:14:16,366 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:14:16,366 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:14:16,367 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:14:16,367 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:14:16,367 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:14:16,367 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:14:16,368 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:14:16,368 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:14:16,368 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 11:14:16,400 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:14:16,412 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:14:16,419 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:14:16,421 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:14:16,421 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:14:16,422 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copy1_false-unreach-call_ground.i [2019-05-23 11:14:16,478 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2103c8854/7849a3e90d6843a7940b5e1800b93205/FLAG803075088 [2019-05-23 11:14:16,867 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:14:16,867 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copy1_false-unreach-call_ground.i [2019-05-23 11:14:16,873 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2103c8854/7849a3e90d6843a7940b5e1800b93205/FLAG803075088 [2019-05-23 11:14:17,247 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2103c8854/7849a3e90d6843a7940b5e1800b93205 [2019-05-23 11:14:17,256 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:14:17,258 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:14:17,259 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:14:17,259 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:14:17,263 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:14:17,264 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,267 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4092b42a 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 11:14:17,267 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,275 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:14:17,292 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:14:17,519 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:14:17,526 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:14:17,557 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:14:17,585 INFO L146 ILogger]: Completed translation [2019-05-23 11:14:17,586 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17 WrapperNode [2019-05-23 11:14:17,586 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:14:17,587 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:14:17,587 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:14:17,588 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:14:17,597 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,612 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,638 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:14:17,639 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:14:17,639 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:14:17,639 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:14:17,650 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,650 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,653 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,653 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,661 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,754 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,757 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,759 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:14:17,760 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:14:17,760 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:14:17,760 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:14:17,761 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (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 11:14:17,830 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:14:17,830 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:14:17,831 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:14:17,831 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:14:17,831 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:14:17,831 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:14:18,287 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:14:18,288 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:14:18,289 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:14:18 BoogieIcfgContainer [2019-05-23 11:14:18,289 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:14:18,290 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:14:18,290 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:14:18,293 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:14:18,293 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:14:17" (1/3) ... [2019-05-23 11:14:18,294 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c609a69 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 11:14:18,294 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (2/3) ... [2019-05-23 11:14:18,295 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c609a69 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 11:14:18,295 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 11:14:18,297 INFO L146 ILogger]: Analyzing ICFG standard_copy1_false-unreach-call_ground.i [2019-05-23 11:14:18,306 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:14:18,315 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:14:18,331 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:14:18,358 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:14:18,359 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:14:18,359 INFO L146 ILogger]: Hoare is true [2019-05-23 11:14:18,359 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:14:18,359 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:14:18,360 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:14:18,360 INFO L146 ILogger]: Difference is false [2019-05-23 11:14:18,360 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:14:18,360 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:14:18,375 INFO L146 ILogger]: Start isEmpty. Operand 51 states. [2019-05-23 11:14:18,382 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 23 [2019-05-23 11:14:18,382 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:18,383 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] [2019-05-23 11:14:18,386 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:18,391 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:18,391 INFO L146 ILogger]: Analyzing trace with hash 2088521950, now seen corresponding path program 1 times [2019-05-23 11:14:18,392 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:18,393 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:18,441 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,441 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:18,441 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,485 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:18,535 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 11:14:18,538 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:14:18,539 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:14:18,543 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:14:18,553 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:14:18,554 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:14:18,555 INFO L146 ILogger]: Start difference. First operand 51 states. Second operand 2 states. [2019-05-23 11:14:18,571 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:18,571 INFO L146 ILogger]: Finished difference Result 84 states and 94 transitions. [2019-05-23 11:14:18,571 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:14:18,573 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 22 [2019-05-23 11:14:18,573 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:18,583 INFO L146 ILogger]: With dead ends: 84 [2019-05-23 11:14:18,583 INFO L146 ILogger]: Without dead ends: 43 [2019-05-23 11:14:18,586 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 11:14:18,604 INFO L146 ILogger]: Start minimizeSevpa. Operand 43 states. [2019-05-23 11:14:18,620 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-05-23 11:14:18,622 INFO L146 ILogger]: Start removeUnreachable. Operand 43 states. [2019-05-23 11:14:18,623 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2019-05-23 11:14:18,625 INFO L146 ILogger]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 22 [2019-05-23 11:14:18,625 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:18,625 INFO L146 ILogger]: Abstraction has 43 states and 45 transitions. [2019-05-23 11:14:18,625 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:14:18,626 INFO L146 ILogger]: Start isEmpty. Operand 43 states and 45 transitions. [2019-05-23 11:14:18,626 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 23 [2019-05-23 11:14:18,627 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:18,627 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] [2019-05-23 11:14:18,627 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:18,628 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:18,628 INFO L146 ILogger]: Analyzing trace with hash -1131963423, now seen corresponding path program 1 times [2019-05-23 11:14:18,628 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:18,628 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:18,629 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,629 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:18,630 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,643 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:18,690 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 11:14:18,690 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:14:18,690 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:14:18,692 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:14:18,692 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:14:18,693 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:14:18,693 INFO L146 ILogger]: Start difference. First operand 43 states and 45 transitions. Second operand 3 states. [2019-05-23 11:14:18,791 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:18,791 INFO L146 ILogger]: Finished difference Result 77 states and 81 transitions. [2019-05-23 11:14:18,792 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:14:18,792 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 22 [2019-05-23 11:14:18,792 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:18,793 INFO L146 ILogger]: With dead ends: 77 [2019-05-23 11:14:18,793 INFO L146 ILogger]: Without dead ends: 52 [2019-05-23 11:14:18,795 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 11:14:18,795 INFO L146 ILogger]: Start minimizeSevpa. Operand 52 states. [2019-05-23 11:14:18,800 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 52 to 44. [2019-05-23 11:14:18,800 INFO L146 ILogger]: Start removeUnreachable. Operand 44 states. [2019-05-23 11:14:18,801 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2019-05-23 11:14:18,801 INFO L146 ILogger]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 22 [2019-05-23 11:14:18,802 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:18,802 INFO L146 ILogger]: Abstraction has 44 states and 46 transitions. [2019-05-23 11:14:18,802 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:14:18,802 INFO L146 ILogger]: Start isEmpty. Operand 44 states and 46 transitions. [2019-05-23 11:14:18,803 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:14:18,803 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:18,804 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:18,804 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:18,804 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:18,804 INFO L146 ILogger]: Analyzing trace with hash -575128313, now seen corresponding path program 1 times [2019-05-23 11:14:18,804 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:18,805 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:18,805 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,805 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:18,806 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,829 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:18,924 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 11:14:18,925 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:18,925 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 11:14:18,943 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:18,982 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:18,984 INFO L146 ILogger]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:14:18,991 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:19,060 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 11:14:19,090 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:14:19,090 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:14:19,091 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:14:19,091 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:14:19,091 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:14:19,092 INFO L146 ILogger]: Start difference. First operand 44 states and 46 transitions. Second operand 6 states. [2019-05-23 11:14:19,663 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:19,663 INFO L146 ILogger]: Finished difference Result 93 states and 98 transitions. [2019-05-23 11:14:19,664 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:14:19,664 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 32 [2019-05-23 11:14:19,664 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:19,665 INFO L146 ILogger]: With dead ends: 93 [2019-05-23 11:14:19,665 INFO L146 ILogger]: Without dead ends: 68 [2019-05-23 11:14:19,666 INFO L146 ILogger]: 0 DeclaredPredicates, 38 GetRequests, 32 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 11:14:19,667 INFO L146 ILogger]: Start minimizeSevpa. Operand 68 states. [2019-05-23 11:14:19,672 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 68 to 55. [2019-05-23 11:14:19,672 INFO L146 ILogger]: Start removeUnreachable. Operand 55 states. [2019-05-23 11:14:19,673 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2019-05-23 11:14:19,674 INFO L146 ILogger]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 32 [2019-05-23 11:14:19,674 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:19,674 INFO L146 ILogger]: Abstraction has 55 states and 57 transitions. [2019-05-23 11:14:19,674 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:14:19,674 INFO L146 ILogger]: Start isEmpty. Operand 55 states and 57 transitions. [2019-05-23 11:14:19,676 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 50 [2019-05-23 11:14:19,676 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:19,676 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] [2019-05-23 11:14:19,676 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:19,677 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:19,677 INFO L146 ILogger]: Analyzing trace with hash -1322829250, now seen corresponding path program 1 times [2019-05-23 11:14:19,677 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:19,677 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:19,678 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,678 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,679 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,706 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,820 INFO L146 ILogger]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:14:19,821 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:19,821 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:14:19,838 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,873 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,875 INFO L146 ILogger]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:19,878 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:20,045 INFO L146 ILogger]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:14:20,074 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:20,074 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:14:20,075 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:14:20,075 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:14:20,076 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:14:20,076 INFO L146 ILogger]: Start difference. First operand 55 states and 57 transitions. Second operand 10 states. [2019-05-23 11:14:20,723 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:20,723 INFO L146 ILogger]: Finished difference Result 111 states and 116 transitions. [2019-05-23 11:14:20,729 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:14:20,729 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 49 [2019-05-23 11:14:20,729 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:20,730 INFO L146 ILogger]: With dead ends: 111 [2019-05-23 11:14:20,731 INFO L146 ILogger]: Without dead ends: 85 [2019-05-23 11:14:20,733 INFO L146 ILogger]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:14:20,733 INFO L146 ILogger]: Start minimizeSevpa. Operand 85 states. [2019-05-23 11:14:20,739 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 85 to 72. [2019-05-23 11:14:20,740 INFO L146 ILogger]: Start removeUnreachable. Operand 72 states. [2019-05-23 11:14:20,741 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2019-05-23 11:14:20,741 INFO L146 ILogger]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 49 [2019-05-23 11:14:20,741 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:20,741 INFO L146 ILogger]: Abstraction has 72 states and 74 transitions. [2019-05-23 11:14:20,742 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:14:20,742 INFO L146 ILogger]: Start isEmpty. Operand 72 states and 74 transitions. [2019-05-23 11:14:20,743 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 67 [2019-05-23 11:14:20,744 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:20,744 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] [2019-05-23 11:14:20,744 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:20,744 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:20,745 INFO L146 ILogger]: Analyzing trace with hash -1191573197, now seen corresponding path program 2 times [2019-05-23 11:14:20,745 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:20,745 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:20,746 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,746 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:20,746 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,770 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:20,894 INFO L146 ILogger]: Checked inductivity of 42 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:14:20,894 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:20,894 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 11:14:20,913 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:20,940 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:20,941 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:20,941 INFO L146 ILogger]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:14:20,946 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:21,017 INFO L146 ILogger]: Checked inductivity of 42 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:14:21,036 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:21,036 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:14:21,037 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:14:21,037 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:14:21,038 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:14:21,038 INFO L146 ILogger]: Start difference. First operand 72 states and 74 transitions. Second operand 11 states. [2019-05-23 11:14:21,700 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:21,701 INFO L146 ILogger]: Finished difference Result 123 states and 127 transitions. [2019-05-23 11:14:21,701 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:14:21,701 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 66 [2019-05-23 11:14:21,702 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:21,703 INFO L146 ILogger]: With dead ends: 123 [2019-05-23 11:14:21,703 INFO L146 ILogger]: Without dead ends: 90 [2019-05-23 11:14:21,704 INFO L146 ILogger]: 0 DeclaredPredicates, 80 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:14:21,704 INFO L146 ILogger]: Start minimizeSevpa. Operand 90 states. [2019-05-23 11:14:21,710 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 90 to 82. [2019-05-23 11:14:21,710 INFO L146 ILogger]: Start removeUnreachable. Operand 82 states. [2019-05-23 11:14:21,712 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2019-05-23 11:14:21,712 INFO L146 ILogger]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 66 [2019-05-23 11:14:21,712 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:21,713 INFO L146 ILogger]: Abstraction has 82 states and 84 transitions. [2019-05-23 11:14:21,713 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:14:21,713 INFO L146 ILogger]: Start isEmpty. Operand 82 states and 84 transitions. [2019-05-23 11:14:21,715 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 77 [2019-05-23 11:14:21,715 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:21,715 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2019-05-23 11:14:21,716 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:21,716 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:21,717 INFO L146 ILogger]: Analyzing trace with hash -530970279, now seen corresponding path program 3 times [2019-05-23 11:14:21,717 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:21,717 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:21,718 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:21,718 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:21,719 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:21,744 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:22,030 INFO L146 ILogger]: Checked inductivity of 73 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:14:22,030 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:22,030 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 11:14:22,043 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:22,099 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:14:22,099 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:22,100 INFO L146 ILogger]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:22,103 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:22,338 INFO L146 ILogger]: Checked inductivity of 73 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-05-23 11:14:22,357 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:22,358 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-05-23 11:14:22,358 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:14:22,359 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:14:22,360 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:14:22,360 INFO L146 ILogger]: Start difference. First operand 82 states and 84 transitions. Second operand 16 states. [2019-05-23 11:14:22,881 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:22,882 INFO L146 ILogger]: Finished difference Result 145 states and 150 transitions. [2019-05-23 11:14:22,883 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:14:22,883 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 76 [2019-05-23 11:14:22,884 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:22,885 INFO L146 ILogger]: With dead ends: 145 [2019-05-23 11:14:22,885 INFO L146 ILogger]: Without dead ends: 112 [2019-05-23 11:14:22,886 INFO L146 ILogger]: 0 DeclaredPredicates, 98 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:14:22,887 INFO L146 ILogger]: Start minimizeSevpa. Operand 112 states. [2019-05-23 11:14:22,894 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 112 to 99. [2019-05-23 11:14:22,894 INFO L146 ILogger]: Start removeUnreachable. Operand 99 states. [2019-05-23 11:14:22,895 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2019-05-23 11:14:22,895 INFO L146 ILogger]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 76 [2019-05-23 11:14:22,896 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:22,896 INFO L146 ILogger]: Abstraction has 99 states and 101 transitions. [2019-05-23 11:14:22,896 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:14:22,896 INFO L146 ILogger]: Start isEmpty. Operand 99 states and 101 transitions. [2019-05-23 11:14:22,897 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 94 [2019-05-23 11:14:22,897 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:22,898 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2019-05-23 11:14:22,898 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:22,898 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:22,898 INFO L146 ILogger]: Analyzing trace with hash -1109209428, now seen corresponding path program 4 times [2019-05-23 11:14:22,899 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:22,899 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:22,900 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:22,900 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:22,900 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:22,923 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:23,109 INFO L146 ILogger]: Checked inductivity of 129 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:14:23,109 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:23,109 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 11:14:23,118 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:23,188 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:23,188 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:23,190 INFO L146 ILogger]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:14:23,193 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:23,543 INFO L146 ILogger]: Checked inductivity of 129 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:14:23,566 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:23,566 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:14:23,566 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:14:23,566 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:14:23,567 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:14:23,567 INFO L146 ILogger]: Start difference. First operand 99 states and 101 transitions. Second operand 15 states. [2019-05-23 11:14:23,795 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:23,795 INFO L146 ILogger]: Finished difference Result 157 states and 161 transitions. [2019-05-23 11:14:23,796 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:14:23,796 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 93 [2019-05-23 11:14:23,797 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:23,798 INFO L146 ILogger]: With dead ends: 157 [2019-05-23 11:14:23,798 INFO L146 ILogger]: Without dead ends: 117 [2019-05-23 11:14:23,799 INFO L146 ILogger]: 0 DeclaredPredicates, 115 GetRequests, 92 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 11:14:23,799 INFO L146 ILogger]: Start minimizeSevpa. Operand 117 states. [2019-05-23 11:14:23,807 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 117 to 109. [2019-05-23 11:14:23,807 INFO L146 ILogger]: Start removeUnreachable. Operand 109 states. [2019-05-23 11:14:23,808 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2019-05-23 11:14:23,808 INFO L146 ILogger]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 93 [2019-05-23 11:14:23,808 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:23,808 INFO L146 ILogger]: Abstraction has 109 states and 111 transitions. [2019-05-23 11:14:23,809 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:14:23,809 INFO L146 ILogger]: Start isEmpty. Operand 109 states and 111 transitions. [2019-05-23 11:14:23,810 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:14:23,810 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:23,811 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2019-05-23 11:14:23,811 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:23,811 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:23,811 INFO L146 ILogger]: Analyzing trace with hash -1182144826, now seen corresponding path program 5 times [2019-05-23 11:14:23,811 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:23,812 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:23,812 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,812 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:23,813 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,840 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:24,101 INFO L146 ILogger]: Checked inductivity of 180 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:14:24,101 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:24,102 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 11:14:24,115 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:24,284 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:14:24,285 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:24,286 INFO L146 ILogger]: Trace formula consists of 163 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:14:24,290 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:24,343 INFO L146 ILogger]: Checked inductivity of 180 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:14:24,365 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:24,365 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:14:24,366 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:14:24,366 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:14:24,366 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:14:24,366 INFO L146 ILogger]: Start difference. First operand 109 states and 111 transitions. Second operand 17 states. [2019-05-23 11:14:24,736 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:24,736 INFO L146 ILogger]: Finished difference Result 167 states and 171 transitions. [2019-05-23 11:14:24,737 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:14:24,737 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 103 [2019-05-23 11:14:24,737 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:24,738 INFO L146 ILogger]: With dead ends: 167 [2019-05-23 11:14:24,738 INFO L146 ILogger]: Without dead ends: 127 [2019-05-23 11:14:24,739 INFO L146 ILogger]: 0 DeclaredPredicates, 129 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:14:24,740 INFO L146 ILogger]: Start minimizeSevpa. Operand 127 states. [2019-05-23 11:14:24,746 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 127 to 119. [2019-05-23 11:14:24,746 INFO L146 ILogger]: Start removeUnreachable. Operand 119 states. [2019-05-23 11:14:24,747 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2019-05-23 11:14:24,747 INFO L146 ILogger]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 103 [2019-05-23 11:14:24,747 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:24,747 INFO L146 ILogger]: Abstraction has 119 states and 121 transitions. [2019-05-23 11:14:24,747 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:14:24,748 INFO L146 ILogger]: Start isEmpty. Operand 119 states and 121 transitions. [2019-05-23 11:14:24,749 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 114 [2019-05-23 11:14:24,749 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:24,750 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2019-05-23 11:14:24,750 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:24,750 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:24,750 INFO L146 ILogger]: Analyzing trace with hash 544024160, now seen corresponding path program 6 times [2019-05-23 11:14:24,750 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:24,751 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:24,751 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,752 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:24,752 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,771 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:25,137 INFO L146 ILogger]: Checked inductivity of 241 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:14:25,137 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:25,137 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 11:14:25,146 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:25,307 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:14:25,307 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:25,309 INFO L146 ILogger]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:14:25,312 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:25,510 INFO L146 ILogger]: Checked inductivity of 241 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2019-05-23 11:14:25,529 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:25,529 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 24 [2019-05-23 11:14:25,530 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:14:25,530 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:14:25,531 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:14:25,531 INFO L146 ILogger]: Start difference. First operand 119 states and 121 transitions. Second operand 24 states. [2019-05-23 11:14:26,075 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:26,075 INFO L146 ILogger]: Finished difference Result 189 states and 194 transitions. [2019-05-23 11:14:26,076 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:14:26,076 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 113 [2019-05-23 11:14:26,077 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:26,078 INFO L146 ILogger]: With dead ends: 189 [2019-05-23 11:14:26,078 INFO L146 ILogger]: Without dead ends: 149 [2019-05-23 11:14:26,080 INFO L146 ILogger]: 0 DeclaredPredicates, 149 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=395, Invalid=1497, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:14:26,080 INFO L146 ILogger]: Start minimizeSevpa. Operand 149 states. [2019-05-23 11:14:26,085 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 149 to 136. [2019-05-23 11:14:26,085 INFO L146 ILogger]: Start removeUnreachable. Operand 136 states. [2019-05-23 11:14:26,086 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions. [2019-05-23 11:14:26,086 INFO L146 ILogger]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 113 [2019-05-23 11:14:26,086 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:26,087 INFO L146 ILogger]: Abstraction has 136 states and 138 transitions. [2019-05-23 11:14:26,087 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:14:26,087 INFO L146 ILogger]: Start isEmpty. Operand 136 states and 138 transitions. [2019-05-23 11:14:26,089 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 131 [2019-05-23 11:14:26,089 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:26,089 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2019-05-23 11:14:26,089 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:26,090 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:26,090 INFO L146 ILogger]: Analyzing trace with hash 2068472529, now seen corresponding path program 7 times [2019-05-23 11:14:26,090 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:26,090 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:26,091 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:26,091 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:26,091 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:26,110 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:26,404 INFO L146 ILogger]: Checked inductivity of 334 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:14:26,405 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:26,405 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 11:14:26,425 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:26,463 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:26,465 INFO L146 ILogger]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:14:26,468 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:26,564 INFO L146 ILogger]: Checked inductivity of 334 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:14:26,583 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:26,583 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:14:26,583 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:14:26,584 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:14:26,584 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:14:26,584 INFO L146 ILogger]: Start difference. First operand 136 states and 138 transitions. Second operand 21 states. [2019-05-23 11:14:26,912 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:26,912 INFO L146 ILogger]: Finished difference Result 201 states and 205 transitions. [2019-05-23 11:14:26,915 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:14:26,915 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 130 [2019-05-23 11:14:26,915 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:26,916 INFO L146 ILogger]: With dead ends: 201 [2019-05-23 11:14:26,916 INFO L146 ILogger]: Without dead ends: 154 [2019-05-23 11:14:26,917 INFO L146 ILogger]: 0 DeclaredPredicates, 164 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:14:26,919 INFO L146 ILogger]: Start minimizeSevpa. Operand 154 states. [2019-05-23 11:14:26,923 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 154 to 146. [2019-05-23 11:14:26,923 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:14:26,932 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2019-05-23 11:14:26,933 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 130 [2019-05-23 11:14:26,933 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:26,933 INFO L146 ILogger]: Abstraction has 146 states and 148 transitions. [2019-05-23 11:14:26,933 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:14:26,933 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 148 transitions. [2019-05-23 11:14:26,935 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 141 [2019-05-23 11:14:26,935 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:26,935 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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] [2019-05-23 11:14:26,936 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:26,936 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:26,936 INFO L146 ILogger]: Analyzing trace with hash 756429559, now seen corresponding path program 8 times [2019-05-23 11:14:26,936 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:26,936 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:26,937 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:26,937 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:26,937 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:26,958 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:27,483 INFO L146 ILogger]: Checked inductivity of 415 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:14:27,484 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:27,484 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 11:14:27,493 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:27,538 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:27,538 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:27,540 INFO L146 ILogger]: Trace formula consists of 215 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:14:27,542 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:27,631 INFO L146 ILogger]: Checked inductivity of 415 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:14:27,650 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:27,650 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:14:27,651 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:14:27,651 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:14:27,651 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:14:27,652 INFO L146 ILogger]: Start difference. First operand 146 states and 148 transitions. Second operand 23 states. [2019-05-23 11:14:28,053 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:28,054 INFO L146 ILogger]: Finished difference Result 211 states and 215 transitions. [2019-05-23 11:14:28,058 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:14:28,058 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 140 [2019-05-23 11:14:28,058 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:28,059 INFO L146 ILogger]: With dead ends: 211 [2019-05-23 11:14:28,059 INFO L146 ILogger]: Without dead ends: 164 [2019-05-23 11:14:28,060 INFO L146 ILogger]: 0 DeclaredPredicates, 178 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:14:28,064 INFO L146 ILogger]: Start minimizeSevpa. Operand 164 states. [2019-05-23 11:14:28,074 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 164 to 156. [2019-05-23 11:14:28,074 INFO L146 ILogger]: Start removeUnreachable. Operand 156 states. [2019-05-23 11:14:28,075 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 156 states to 156 states and 158 transitions. [2019-05-23 11:14:28,075 INFO L146 ILogger]: Start accepts. Automaton has 156 states and 158 transitions. Word has length 140 [2019-05-23 11:14:28,075 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:28,075 INFO L146 ILogger]: Abstraction has 156 states and 158 transitions. [2019-05-23 11:14:28,075 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:14:28,076 INFO L146 ILogger]: Start isEmpty. Operand 156 states and 158 transitions. [2019-05-23 11:14:28,079 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 151 [2019-05-23 11:14:28,081 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:28,082 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2019-05-23 11:14:28,082 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:28,082 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:28,082 INFO L146 ILogger]: Analyzing trace with hash 1213238173, now seen corresponding path program 9 times [2019-05-23 11:14:28,083 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:28,083 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:28,083 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:28,084 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:28,084 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:28,121 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:28,437 INFO L146 ILogger]: Checked inductivity of 506 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:14:28,437 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:28,438 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 11:14:28,447 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:28,496 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:14:28,496 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:28,497 INFO L146 ILogger]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:14:28,499 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:28,666 INFO L146 ILogger]: Checked inductivity of 506 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2019-05-23 11:14:28,685 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:28,685 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11] total 32 [2019-05-23 11:14:28,686 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:14:28,686 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:14:28,686 INFO L146 ILogger]: CoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:14:28,686 INFO L146 ILogger]: Start difference. First operand 156 states and 158 transitions. Second operand 32 states. [2019-05-23 11:14:29,448 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:29,449 INFO L146 ILogger]: Finished difference Result 233 states and 238 transitions. [2019-05-23 11:14:29,452 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-05-23 11:14:29,452 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 150 [2019-05-23 11:14:29,453 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:29,454 INFO L146 ILogger]: With dead ends: 233 [2019-05-23 11:14:29,454 INFO L146 ILogger]: Without dead ends: 186 [2019-05-23 11:14:29,455 INFO L146 ILogger]: 0 DeclaredPredicates, 200 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=725, Invalid=2815, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:14:29,456 INFO L146 ILogger]: Start minimizeSevpa. Operand 186 states. [2019-05-23 11:14:29,459 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 186 to 173. [2019-05-23 11:14:29,459 INFO L146 ILogger]: Start removeUnreachable. Operand 173 states. [2019-05-23 11:14:29,460 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2019-05-23 11:14:29,460 INFO L146 ILogger]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 150 [2019-05-23 11:14:29,461 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:29,461 INFO L146 ILogger]: Abstraction has 173 states and 175 transitions. [2019-05-23 11:14:29,461 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:14:29,461 INFO L146 ILogger]: Start isEmpty. Operand 173 states and 175 transitions. [2019-05-23 11:14:29,462 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 168 [2019-05-23 11:14:29,462 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:29,463 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:29,463 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:29,463 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:29,463 INFO L146 ILogger]: Analyzing trace with hash -271077528, now seen corresponding path program 10 times [2019-05-23 11:14:29,463 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:29,464 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:29,464 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:29,464 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:29,465 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:29,482 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:30,219 INFO L146 ILogger]: Checked inductivity of 636 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:14:30,220 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:30,220 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 11:14:30,229 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:30,740 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:30,740 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:30,743 INFO L146 ILogger]: Trace formula consists of 253 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:14:30,746 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:30,811 INFO L146 ILogger]: Checked inductivity of 636 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:14:30,840 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:30,840 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:14:30,841 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:14:30,841 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:14:30,841 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:14:30,841 INFO L146 ILogger]: Start difference. First operand 173 states and 175 transitions. Second operand 27 states. [2019-05-23 11:14:31,539 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:31,540 INFO L146 ILogger]: Finished difference Result 245 states and 249 transitions. [2019-05-23 11:14:31,546 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:14:31,546 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 167 [2019-05-23 11:14:31,546 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:31,547 INFO L146 ILogger]: With dead ends: 245 [2019-05-23 11:14:31,548 INFO L146 ILogger]: Without dead ends: 191 [2019-05-23 11:14:31,549 INFO L146 ILogger]: 0 DeclaredPredicates, 213 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:14:31,549 INFO L146 ILogger]: Start minimizeSevpa. Operand 191 states. [2019-05-23 11:14:31,552 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 191 to 183. [2019-05-23 11:14:31,553 INFO L146 ILogger]: Start removeUnreachable. Operand 183 states. [2019-05-23 11:14:31,553 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 183 states to 183 states and 185 transitions. [2019-05-23 11:14:31,553 INFO L146 ILogger]: Start accepts. Automaton has 183 states and 185 transitions. Word has length 167 [2019-05-23 11:14:31,554 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:31,554 INFO L146 ILogger]: Abstraction has 183 states and 185 transitions. [2019-05-23 11:14:31,554 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:14:31,555 INFO L146 ILogger]: Start isEmpty. Operand 183 states and 185 transitions. [2019-05-23 11:14:31,556 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 178 [2019-05-23 11:14:31,556 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:31,557 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:31,557 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:31,557 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:31,557 INFO L146 ILogger]: Analyzing trace with hash -1569644798, now seen corresponding path program 11 times [2019-05-23 11:14:31,557 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:31,558 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:31,558 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:31,558 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:31,559 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:31,586 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:32,106 INFO L146 ILogger]: Checked inductivity of 747 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:14:32,106 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:32,107 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 11:14:32,115 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:36,522 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-05-23 11:14:36,522 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:36,528 INFO L146 ILogger]: Trace formula consists of 267 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:14:36,531 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:36,726 INFO L146 ILogger]: Checked inductivity of 747 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2019-05-23 11:14:36,748 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:36,748 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 13] total 38 [2019-05-23 11:14:36,748 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:14:36,749 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:14:36,749 INFO L146 ILogger]: CoverageRelationStatistics Valid=242, Invalid=1164, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:14:36,749 INFO L146 ILogger]: Start difference. First operand 183 states and 185 transitions. Second operand 38 states. [2019-05-23 11:14:38,203 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:38,203 INFO L146 ILogger]: Finished difference Result 267 states and 272 transitions. [2019-05-23 11:14:38,203 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:14:38,204 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 177 [2019-05-23 11:14:38,204 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:38,205 INFO L146 ILogger]: With dead ends: 267 [2019-05-23 11:14:38,205 INFO L146 ILogger]: Without dead ends: 213 [2019-05-23 11:14:38,208 INFO L146 ILogger]: 0 DeclaredPredicates, 237 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1020, Invalid=4092, Unknown=0, NotChecked=0, Total=5112 [2019-05-23 11:14:38,208 INFO L146 ILogger]: Start minimizeSevpa. Operand 213 states. [2019-05-23 11:14:38,211 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 213 to 200. [2019-05-23 11:14:38,211 INFO L146 ILogger]: Start removeUnreachable. Operand 200 states. [2019-05-23 11:14:38,212 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 200 states to 200 states and 202 transitions. [2019-05-23 11:14:38,212 INFO L146 ILogger]: Start accepts. Automaton has 200 states and 202 transitions. Word has length 177 [2019-05-23 11:14:38,212 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:38,212 INFO L146 ILogger]: Abstraction has 200 states and 202 transitions. [2019-05-23 11:14:38,212 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:14:38,213 INFO L146 ILogger]: Start isEmpty. Operand 200 states and 202 transitions. [2019-05-23 11:14:38,214 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 195 [2019-05-23 11:14:38,215 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:38,215 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:38,215 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:38,215 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:38,216 INFO L146 ILogger]: Analyzing trace with hash 1364041711, now seen corresponding path program 12 times [2019-05-23 11:14:38,216 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:38,216 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:38,216 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:38,217 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:38,217 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:38,235 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:39,230 INFO L146 ILogger]: Checked inductivity of 904 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:14:39,230 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:39,230 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 11:14:39,241 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:42,364 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:14:42,364 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:42,369 INFO L146 ILogger]: Trace formula consists of 277 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:14:42,371 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:42,818 INFO L146 ILogger]: Checked inductivity of 904 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2019-05-23 11:14:42,838 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:42,839 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 15] total 42 [2019-05-23 11:14:42,839 INFO L146 ILogger]: Interpolant automaton has 42 states [2019-05-23 11:14:42,840 INFO L146 ILogger]: Constructing interpolant automaton starting with 42 interpolants. [2019-05-23 11:14:42,840 INFO L146 ILogger]: CoverageRelationStatistics Valid=286, Invalid=1436, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:14:42,841 INFO L146 ILogger]: Start difference. First operand 200 states and 202 transitions. Second operand 42 states. [2019-05-23 11:14:44,162 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:44,162 INFO L146 ILogger]: Finished difference Result 291 states and 296 transitions. [2019-05-23 11:14:44,162 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-05-23 11:14:44,163 INFO L146 ILogger]: Start accepts. Automaton has 42 states. Word has length 194 [2019-05-23 11:14:44,163 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:44,164 INFO L146 ILogger]: With dead ends: 291 [2019-05-23 11:14:44,164 INFO L146 ILogger]: Without dead ends: 230 [2019-05-23 11:14:44,167 INFO L146 ILogger]: 0 DeclaredPredicates, 260 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1214 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1220, Invalid=5100, Unknown=0, NotChecked=0, Total=6320 [2019-05-23 11:14:44,167 INFO L146 ILogger]: Start minimizeSevpa. Operand 230 states. [2019-05-23 11:14:44,171 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 230 to 217. [2019-05-23 11:14:44,171 INFO L146 ILogger]: Start removeUnreachable. Operand 217 states. [2019-05-23 11:14:44,172 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 217 states to 217 states and 219 transitions. [2019-05-23 11:14:44,172 INFO L146 ILogger]: Start accepts. Automaton has 217 states and 219 transitions. Word has length 194 [2019-05-23 11:14:44,172 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:44,172 INFO L146 ILogger]: Abstraction has 217 states and 219 transitions. [2019-05-23 11:14:44,172 INFO L146 ILogger]: Interpolant automaton has 42 states. [2019-05-23 11:14:44,173 INFO L146 ILogger]: Start isEmpty. Operand 217 states and 219 transitions. [2019-05-23 11:14:44,174 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 212 [2019-05-23 11:14:44,174 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:44,174 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 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 11:14:44,174 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:44,174 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:44,175 INFO L146 ILogger]: Analyzing trace with hash -1486603306, now seen corresponding path program 13 times [2019-05-23 11:14:44,175 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:44,175 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:44,176 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:44,176 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:44,176 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:44,195 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:44,615 INFO L146 ILogger]: Checked inductivity of 1078 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-05-23 11:14:44,615 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:44,616 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 11:14:44,625 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:44,672 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:44,674 INFO L146 ILogger]: Trace formula consists of 315 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:14:44,676 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:44,788 INFO L146 ILogger]: Checked inductivity of 1078 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-05-23 11:14:44,807 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:44,807 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:14:44,808 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:14:44,808 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:14:44,808 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:14:44,809 INFO L146 ILogger]: Start difference. First operand 217 states and 219 transitions. Second operand 33 states. [2019-05-23 11:14:45,479 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:45,480 INFO L146 ILogger]: Finished difference Result 303 states and 307 transitions. [2019-05-23 11:14:45,482 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:14:45,482 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 211 [2019-05-23 11:14:45,483 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:45,484 INFO L146 ILogger]: With dead ends: 303 [2019-05-23 11:14:45,484 INFO L146 ILogger]: Without dead ends: 235 [2019-05-23 11:14:45,485 INFO L146 ILogger]: 0 DeclaredPredicates, 269 GetRequests, 210 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 11:14:45,486 INFO L146 ILogger]: Start minimizeSevpa. Operand 235 states. [2019-05-23 11:14:45,489 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 235 to 227. [2019-05-23 11:14:45,490 INFO L146 ILogger]: Start removeUnreachable. Operand 227 states. [2019-05-23 11:14:45,491 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 227 states to 227 states and 229 transitions. [2019-05-23 11:14:45,491 INFO L146 ILogger]: Start accepts. Automaton has 227 states and 229 transitions. Word has length 211 [2019-05-23 11:14:45,491 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:45,491 INFO L146 ILogger]: Abstraction has 227 states and 229 transitions. [2019-05-23 11:14:45,491 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:14:45,492 INFO L146 ILogger]: Start isEmpty. Operand 227 states and 229 transitions. [2019-05-23 11:14:45,492 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 222 [2019-05-23 11:14:45,493 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:45,493 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 7, 7, 7, 7, 7, 7, 7, 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 11:14:45,493 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:45,493 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:45,493 INFO L146 ILogger]: Analyzing trace with hash 1367878768, now seen corresponding path program 14 times [2019-05-23 11:14:45,494 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:45,494 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:45,494 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:45,494 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:45,494 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:45,512 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:45,935 INFO L146 ILogger]: Checked inductivity of 1219 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-05-23 11:14:45,935 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:45,935 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 11:14:45,946 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:45,995 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:45,995 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:45,996 INFO L146 ILogger]: Trace formula consists of 329 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:14:45,999 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:46,075 INFO L146 ILogger]: Checked inductivity of 1219 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-05-23 11:14:46,094 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:46,094 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:14:46,095 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:14:46,095 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:14:46,096 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:14:46,096 INFO L146 ILogger]: Start difference. First operand 227 states and 229 transitions. Second operand 35 states. [2019-05-23 11:14:46,800 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:46,801 INFO L146 ILogger]: Finished difference Result 313 states and 317 transitions. [2019-05-23 11:14:46,801 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:14:46,801 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 221 [2019-05-23 11:14:46,801 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:46,803 INFO L146 ILogger]: With dead ends: 313 [2019-05-23 11:14:46,803 INFO L146 ILogger]: Without dead ends: 245 [2019-05-23 11:14:46,805 INFO L146 ILogger]: 0 DeclaredPredicates, 283 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:14:46,805 INFO L146 ILogger]: Start minimizeSevpa. Operand 245 states. [2019-05-23 11:14:46,810 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 245 to 237. [2019-05-23 11:14:46,811 INFO L146 ILogger]: Start removeUnreachable. Operand 237 states. [2019-05-23 11:14:46,811 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 237 states to 237 states and 239 transitions. [2019-05-23 11:14:46,812 INFO L146 ILogger]: Start accepts. Automaton has 237 states and 239 transitions. Word has length 221 [2019-05-23 11:14:46,812 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:46,812 INFO L146 ILogger]: Abstraction has 237 states and 239 transitions. [2019-05-23 11:14:46,812 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:14:46,812 INFO L146 ILogger]: Start isEmpty. Operand 237 states and 239 transitions. [2019-05-23 11:14:46,813 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 232 [2019-05-23 11:14:46,814 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:46,814 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 7, 7, 7, 7, 7, 7, 7, 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 11:14:46,814 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:46,814 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:46,815 INFO L146 ILogger]: Analyzing trace with hash -451697526, now seen corresponding path program 15 times [2019-05-23 11:14:46,815 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:46,815 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:46,815 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:46,816 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:46,816 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:46,839 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:47,428 INFO L146 ILogger]: Checked inductivity of 1370 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-05-23 11:14:47,428 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:47,428 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 11:14:47,442 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:47,740 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-05-23 11:14:47,740 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:47,743 INFO L146 ILogger]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:14:47,745 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:48,118 INFO L146 ILogger]: Checked inductivity of 1370 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2019-05-23 11:14:48,138 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:48,139 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17] total 50 [2019-05-23 11:14:48,139 INFO L146 ILogger]: Interpolant automaton has 50 states [2019-05-23 11:14:48,139 INFO L146 ILogger]: Constructing interpolant automaton starting with 50 interpolants. [2019-05-23 11:14:48,141 INFO L146 ILogger]: CoverageRelationStatistics Valid=402, Invalid=2048, Unknown=0, NotChecked=0, Total=2450 [2019-05-23 11:14:48,141 INFO L146 ILogger]: Start difference. First operand 237 states and 239 transitions. Second operand 50 states. [2019-05-23 11:14:50,243 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:50,244 INFO L146 ILogger]: Finished difference Result 335 states and 340 transitions. [2019-05-23 11:14:50,244 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2019-05-23 11:14:50,244 INFO L146 ILogger]: Start accepts. Automaton has 50 states. Word has length 231 [2019-05-23 11:14:50,245 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:50,246 INFO L146 ILogger]: With dead ends: 335 [2019-05-23 11:14:50,246 INFO L146 ILogger]: Without dead ends: 267 [2019-05-23 11:14:50,249 INFO L146 ILogger]: 0 DeclaredPredicates, 311 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1782 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1760, Invalid=7360, Unknown=0, NotChecked=0, Total=9120 [2019-05-23 11:14:50,249 INFO L146 ILogger]: Start minimizeSevpa. Operand 267 states. [2019-05-23 11:14:50,252 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 267 to 254. [2019-05-23 11:14:50,253 INFO L146 ILogger]: Start removeUnreachable. Operand 254 states. [2019-05-23 11:14:50,254 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 254 states to 254 states and 256 transitions. [2019-05-23 11:14:50,254 INFO L146 ILogger]: Start accepts. Automaton has 254 states and 256 transitions. Word has length 231 [2019-05-23 11:14:50,254 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:50,254 INFO L146 ILogger]: Abstraction has 254 states and 256 transitions. [2019-05-23 11:14:50,255 INFO L146 ILogger]: Interpolant automaton has 50 states. [2019-05-23 11:14:50,255 INFO L146 ILogger]: Start isEmpty. Operand 254 states and 256 transitions. [2019-05-23 11:14:50,256 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 249 [2019-05-23 11:14:50,256 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:50,256 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:50,256 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:50,257 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:50,257 INFO L146 ILogger]: Analyzing trace with hash 430659815, now seen corresponding path program 16 times [2019-05-23 11:14:50,257 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:50,257 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:50,258 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:50,258 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:50,258 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:50,278 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:51,212 INFO L146 ILogger]: Checked inductivity of 1581 backedges. 0 proven. 1377 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2019-05-23 11:14:51,213 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:51,213 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 11:14:51,227 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:55,651 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:55,651 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:55,656 INFO L146 ILogger]: Trace formula consists of 367 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:14:55,659 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:56,356 INFO L146 ILogger]: Checked inductivity of 1581 backedges. 0 proven. 1377 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2019-05-23 11:14:56,414 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:56,414 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:14:56,415 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:14:56,416 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:14:56,419 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:14:56,419 INFO L146 ILogger]: Start difference. First operand 254 states and 256 transitions. Second operand 39 states. [2019-05-23 11:14:58,212 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:58,212 INFO L146 ILogger]: Finished difference Result 347 states and 351 transitions. [2019-05-23 11:14:58,217 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:14:58,217 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 248 [2019-05-23 11:14:58,217 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:58,219 INFO L146 ILogger]: With dead ends: 347 [2019-05-23 11:14:58,219 INFO L146 ILogger]: Without dead ends: 272 [2019-05-23 11:14:58,221 INFO L146 ILogger]: 0 DeclaredPredicates, 318 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:14:58,221 INFO L146 ILogger]: Start minimizeSevpa. Operand 272 states. [2019-05-23 11:14:58,225 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 272 to 264. [2019-05-23 11:14:58,225 INFO L146 ILogger]: Start removeUnreachable. Operand 264 states. [2019-05-23 11:14:58,226 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 264 states to 264 states and 266 transitions. [2019-05-23 11:14:58,226 INFO L146 ILogger]: Start accepts. Automaton has 264 states and 266 transitions. Word has length 248 [2019-05-23 11:14:58,226 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:58,226 INFO L146 ILogger]: Abstraction has 264 states and 266 transitions. [2019-05-23 11:14:58,226 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:14:58,227 INFO L146 ILogger]: Start isEmpty. Operand 264 states and 266 transitions. [2019-05-23 11:14:58,228 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 259 [2019-05-23 11:14:58,228 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:58,228 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:58,228 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:58,229 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:58,229 INFO L146 ILogger]: Analyzing trace with hash 401580173, now seen corresponding path program 17 times [2019-05-23 11:14:58,229 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:58,229 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:58,230 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:58,230 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:58,230 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:58,251 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:58,973 INFO L146 ILogger]: Checked inductivity of 1752 backedges. 0 proven. 1548 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2019-05-23 11:14:58,973 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:58,973 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 11:14:58,983 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1